United States Nuclear Regulatory Commission - Protecting People and the Environment

NRC Collection of Abbreviations (NUREG-0544, Revision 4)

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Publication Information

Manuscript Completed: April 1998
Date Published:
July 1998

Information Management Division
Office of the Chief Information Officer
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

Availability Notice

Abstract

This collection of abbreviations in common use in the nuclear industry and regulatory community was compiled from Nuclear Regulatory Commission (NRC) and nuclear industry sources. It was published to assist agency authors, readers, and stakeholders in identifying abbreviations for the numerous organizational, scientific, and engineering terms that appear in NRC printed and electronic information. The compilation is descriptive rather than prescriptive. No one abbreviation is recommended to the exclusion of another because the same abbreviation may with equal validity apply to two or more terms.

Introduction

The U.S. Nuclear Regulatory Commission (NRC) publishes this collection of abbreviations to assist agency authors and readers and members of the public in identifying the abbreviations for the numerous organizational, scientific, and engineering terms that appear in NRC printed and electronic information. This collection has been compiled from NRC and nuclear industry sources and is descriptive rather than prescriptive. No one abbreviation is recommended to the exclusion of another because the same abbreviation may with equal validity apply to two or more terms.

An abbreviation is a shortened, condensed form of a word or term. Some technical abbreviations, such as laser and scuba, have been so widely disseminated that they now communicate successfully without further definition.

Acronyms and initialisms are types of abbreviations.

  • An acronym is an abbreviation that forms a pronounceable term from the initial letters of a group of words: ANSI is formed from American National Standards Institute and LOCA from loss-of-coolant accident.

  • An initialism is an abbreviation formed from the initial letters of a group of words for which each letter is pronounced separately: EPZ is formed from emergency planning zone and SGTS from standby gas treatment system.

The NRC editorial staff offers the following suggestions for using abbreviations:

  • Spell out the term for an abbreviation the first time you use it in text and follow the spelled-out term with the abbreviation in parentheses: control rod drive (CRD). Repeat this process at the beginning of each new section or chapter for printed publications.

  • Restrict an abbreviation to one meaning in any one document. If you designate NDT to mean nondestructive testing, do not designate NDT to mean nil ductility temperature or any other term beginning with the letters NDT in the same document. Spell out any other term that could be abbreviated as NDT in that document.

This compilation includes major NRC program and staff offices, advisory groups, panels, and boards but not NRC divisions, branches, and sections, which can be found in the NRC Telephone Directory (NUREG/BR-0046). Some abbreviations for organizations that no longer exist are included as historical references.

This compilation does not include chemical elements, computer codes, and most units of measurement. Many of these abbreviations appear in readily accessible sources such as dictionaries, the Government Printing Office (GPO) Style Manual, and other manuals.

Identical abbreviations appear in various forms (e.g., AA or A/A); they are listed in this compilation in the following order: AA, aa, A/A, A-A, A&A.

In general, the editorial staff observes the following rules for forming plurals and for capitalizing and hyphenating abbreviations:

  • Plurals
  • To form most plurals, add a lowercase s without an apostrophe preceding it to the abbreviation.

    DBAs for design-basis accidents
    PWRs for pressurized-water reactors

    However, some abbreviations are identical in both singular and plural constructions.

    ATWS for anticipated transient or transients without scram
    GDC for general design criterion or criteria
    LCO for limiting condition or conditions for operation
    MOU for memorandum or memoranda of understanding

    Use the same abbreviation for a plural construction when a word in a term is an irregular plural (e.g., LRB for licensing review basis or bases) or when any word in a term except the last word is a regular plural, that is, formed by adding s (e.g., COLSS for core operating limit or limits support system). Only the irregular plurals, such as basis or bases, are given in this collection; plurals formed by adding s to an internal or final word of a term are not given.

  • Capitalization
  • Although most abbreviated terms are lowercase when written out, most of their abbreviations are uppercase.

    Do not capitalize specific parts of a nuclear system or facility, the many job titles at a nuclear facility, and generic terms designating equipment, systems, or programs.

    ACCWS for auxiliary component cooling water system
    RPM for radiation protection manager

    However, capitalize the names of specific facilities or reactors, companies or organizations, and committees or special interest groups.

    ACNW for Advisory Committee on Nuclear Waste
    RRA for Radiation Research Associates, Inc.
    RRR for Raleigh Research Reactor
  • Hyphenation

  • To hyphenate a term from which an abbreviation is formed, follow the general rules of hyphenation, particularly those given in the GPO Style Manual.

    Hyphenate unit modifiers used as adjectives and adverbs before a noun in each term:

    LOCA for loss-of-coolant accident, but not LOOP for loss of offsite power

    Do not hyphenate most short prefixes, such as co, de, pre, pro, and re.

    DWCS for defueling water cleanup system
    PTP for preoperational test program

The NRC welcomes new entries for future revisions of this collection. Please send suggestions for new entries to the e-mail address <jfb1@NRC.GOV> or write to the Technical Publications Section, Publishing Services Branch, U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001.

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AA
access authorization
AAA
Agency Allegations Advisor
AAAC
Affirmative Action Advisory Committee
Aac
alternate ac
AACC
American Association for Contamination Control
AAEC
Australian Atomic Energy Commission
AAECS
auxiliary area environmental control system
AAEGTS
auxiliary area emergency gas treatment system
AAHP
American Academy of Health Physics
AAM
airborne activity monitor
AAPM
American Association of Physicists in Medicine
AAR
Aktiebolaget Atomenergi Research Reactor
AARR
Argonne Advanced Research Reactor
AASHTO
American Association of State Highway and Transportation Officials
AATN
Asociación Argentina de Tecnología Nuclear (Argentina)
AB
auxiliary boiler
ABACC
Argentine-Brazilian Agency for Accounting and Control of Nuclear Material
ABB-CE
Asea Brown Boveri-Combustion Engineering, Inc.
ABCC
Atomic Bomb Casualty Commission
ABET
Accreditation Board for Engineering and Technology
ABFS
auxiliary building filter system
ABGTS
auxiliary building gas treatment system
ABHP
American Board of Health Physics
ABHX
air blast heat exchanger
ABI
auxiliary building isolation
ABLE
activity balance line evaluation
ABMA
American Boiler Manufacturers Association and Affiliated Industries
ABNP
Alan R. Barton Nuclear Plant
ABR
as-built reconciliation
ABRR
as-built reverification record
ABST
auxiliary building sump tank
ABSVS
auxiliary building special ventilation system
ABT
automatic bus transfer
ABV
auxiliary building ventilation
ABWR
advanced boiling-water reactor
ABWRP
American Boiling Water Reactor Program
AC
acid concentrator
A&C
adequacy and compatibility
AC
administrative control
advisory committee
air conditioning
allegations coordinator
ac
alternating current
A/C
air conditioning
A-C
Allis-Chalmers Corp. or Allis-Chalmers Manufacturing Company
ACA
Arms Control Association
ACAD
air containment atmosphere dilution
ACB
air-operated circuit breaker
Ateliers et Chantiers de Bretagne (France)
ACC
accumulator
air-cooled condenser
ACCWS
auxiliary component cooling water system
ACDA
Arms Control and Disarmament Agency
ACEC
Ateliers de Constructions Electriques de Charleroi, S.A. (Belgium)
ACF
acid concentrator feed
ampacity correction factor
automatic control feature
acfm
actual cubic foot/feet per minute
ACHP
Advisory Council on Historic Preservation
ACI
American Concrete Institute
automatic closure and interlock
ACIWA
ac-independent water addition
ACL
access control list
alternate concentration limit
ACLP
above-core load pad
above-core load plane
ACM
alternate contact mode
auxiliary cooling method
ACMUI
Advisory Committee on the Medical Uses of Isotopes (NRC)
ACNFS
Advisory Committee on Nuclear Facility Safety (DOE)
ACNP
American College of Nuclear Physicians
ACNS
Advisory Committee on Nuclear Safety (Canada)
ACNW
Advisory Committee on Nuclear Waste (NRC)
ACORN
Association of Community Organizations for Reform Now
ACOT
analog channel operational test
ACP
auxiliary control panel
ACPDS
Advisory Committee on Personal Dosimetry Services (NSF)
ACPR
advanced core performance reactor
advanced core pulsed reactor
annular core pulsed reactor
ACR
advanced converter reactor
attribute coverage report
ACRE
advanced compact reactor experiment
ACRG
Advanced Code Review Group (NRC)
ACRI
Air Conditioning and Refrigeration Institute
ACRR
annular core research reactor
ACRS
Advisory Committee on Reactor Safeguards (NRC)
ACS
Advanced Computer System
alternate core spray
American Chemical Society
auxiliary cooling system
ACSNI
Advisory Committee on Safety of Nuclear Installations (U.K.)
ACTIVITIES
automated commitment tracking system
ACU
air cleanup unit
AD
assistant director
A/D
analog to digital
ADAMS
Agencywide Documents Access and Management System
ADAS
automatic data acquisition and storage
ADC
authorized derivative classifier
ADDS
applied digital data system
ADEA
Association Belge pour le Développement Pacifique de l'Energie Atomique (Belgium)
ADFCER
Assistant Director for Fuel Cycle and Environmental Research
ADI
Applied Dynamics International
ADM
Administration, Office of (NRC)
AND
apparent discrepancy notification
ADP
automated data processing
automatic data processing
ADPE
automatic data processing equipment
ADR
audit discrepancy report
ADRS
automated data retrieval system
ADS
automated data system
automatic depressurization system
automatic dispatch system
ADT
aerated drain tank
ADU
ammonium diuranate
ADV
atmospheric dump valve
AE
acoustic emission
air ejector
architect-engineer
A/E
architect-engineer
A-E
architect-engineer
AEA
Atomic Energy Act of 1954
Atomic Energy Authority
AEB
Atomic Energy Bureau (Korea)
auxiliary equipment building
AEC
Alternative Energy Coalition
Atomic Energy Commission, U.S. (Became ERDA and NRC)
AECB
Atomic Energy Control Board (Canada)
AECC
Aerojet Energy Conversion Co.
AECL
AECL Technologies
Atomic Energy of Canada, Ltd.
AECLT
Atomic Energy of Canada, Ltd., Technologies
AECM
Atomic Energy Commission Manual
AECPR
Atomic Energy Commission Procurement Regulation
AEDE
annual effective dose equivalent
AEE
Atomic Energy Establishment (Libya)
AEEN
Agenzia Europea per l'Energia Nucleare
Agence Européenne pour l'Energie Nucléaire
AEEW
Atomic Energy Establishment of Winfrith (United Kingdom)
AEF
Argonne Experimental Facility
AEGTS
annulus exhaust gas treatment system
AEI
Associated Electric Industries Ltd. (United Kingdom)
AEN
Agence pour l'Energie Nucléaire (France)
AENJ
Atlantic Electric of New Jersey
AEO
Atomic Energy Organization (Iran)
AEOD
Analysis and Evaluation of Operational Data, Office for (NRC)
AEOF
alternate emergency operations facility
AEOI
Atomic Energy Organization of Iran
AEOR
Annual Environmental Operating Report
AEP
American Electric Power Co., Inc.
AEPSC
American Electric Power Service Corp.
AERCW
auxiliary essential raw cooling water
AERE
Atomic Energy Research Establishment (United Kingdom)
AERO
Association for Excellence in Reactor Operations
AES
aerospace and electronic systems
AESJ
Atomic Energy Society of Japan
AETR
advanced engineering test reactor
advanced epithermal thorium reactor
AF
alternating field
auxiliary feed
auxiliary feedwater
AF/AL
as found, as left
AFAS
auxiliary feedwater actuating system
AFB
Air Force base
AFBMA
Anti-Friction Bearing Manufacturers Association, Inc.
AFC
automatic flow control
AFD
acid fractionator distillate
axial flux difference
AFDC
auxiliary feedwater discharge cross-connection
AFDS
automatic fire detection system
AFI
Air Filter Institute
AFL
active fuel length
AFNE
Americans for Nuclear Energy
AF
NETFAir Force Nuclear Engineering Test Facility
AFO
auxiliary fuel oil
AFOS
auxiliary fuel oil system
AFP
auxiliary feedwater pump
AFR
acid fractionation recycle
acid fractionator recycle
away from reactor
AFRRI
Armed Forces Radiobiology Research Institute
AFS
auxiliary feedwater system
AFSR
Argonne Fast-Source Reactor
AFW
auxiliary feedwater
AFWAS
auxiliary feedwater actuation system
AFWC
auxiliary feedwater control
AFWS
auxiliary feedwater system
AG
Aerojet-General Corp.
AGA
automatic gas analyzer
AGC
advanced gas centrifuge
AGCR
advanced gas-cooled reactor
AGC
Aerojet-General Corp.
AGL
above-ground level
AGMA
American Gear Manufacturers Association
AGN
Aerojet-General Nucleonics
AGNS
Allied-General Nuclear Services
AGR
advanced gas-cooled reactor
AGS
alternating gradient synchrotron
annular gas system
AGU
American Geophysical Union
AGVC
automatic governing valve control
automatic governor valve control
AGW
accident-generated water
AGZ
actual ground zero
A/H
air handling
AHFR
Argonne High-Flux Reactor
AHJ
authority housing jurisdiction
AHM
auxiliary handling machine
AHPA
Archeological and Historic Preservation Act
AHR
aqueous homogeneous reactor
AHTG
ad hoc task group
AHU
air-handling unit
AI
artificial intelligence
Atomics International
authorized inspector
AIA
authorized inspection agency
AICE
American Institute of Chemical Engineers
AID
accident identification display
Agency for International Development
air inlet damper
AIEE
American Institute of Electrical Engineers
AIF
Atomic Industrial Forum, Inc. (now NEI)
AIG
antitrust and indemnity group
AIGS
auxiliary inerting gas subsystem
AIHA
American Industrial Hygiene Association
AIHX
auxiliary intermediate heat exchanger
AIMME
American Institute of Mining and Metallurgical Engineers
AIMMPE
American Institute of Mining, Metallurgical, and Petroleum Engineers
AIMS
automated information management system
automatic isotopic measurement system
AINSE
Australian Institute of Nuclear Science and Engineering (now ANSTO)
AI&O
annual inspection and overhaul
AIP
American Institute of Physics
approval in principle
AIRI
Atomic Industry Research Institute
AIRP
air intake, recirculation, and purification
AIRS
Advanced Incident Reporting System (IAEA/NEA)
advanced instrumentation for reflood studies
Automated Inspection Report System
AIS
accumulator injection system
advanced isotope separation
automated information system
AISC
American Institute of Steel Construction
AISE
Association of Iron and Steel Engineers
AISI
American Iron and Steel Institute
AISS
automated information systems security
AISSP
automated information system security plan
AIT
American Industrial Technologies
American Institute in Taiwan
augmented inspection team
AITS
action item tracking system
AIX
after ion exchanger
AKK
Atomkraftdonsortiet Krangede Ad & Co. (Sweden)
AL
action level
analytical laboratory
analytical limit
ALAP
as low as possible
as low as practicable
as low as practical
ALARA
as low as reasonably achievable
ALARP
as low as reasonably practicable
ALATA
as low as technically achievable
ALCP
area local control panel
ALD
acoustic leak detection
ALI
annual level of intake
ALIP
annular linear induction pump
ALJ
administrative law judge
ALKEM
Alpha Chemie und Metallurgie, G.m.b.H. (Germany)
ALMPC
Agency Labor-Management Partnership Committee
ALMR
advanced liquid metal reactor
ALMS
auxiliary liquid metal system
ALP
assembly language preprocessor
ALPHGR
average linear planar heat generation rate
ALPR
Argonne Low Power Reactor
Army low-power reactor
ALRR
Ames Laboratory Research Reactor
ALRS
Apache Leap Research Site
ALSI
aluminum silicon alloy
ALUPA
Association Luxembourgeoise pour l'Utilisation Pacifique de l'Energie Atomique (Luxembourg)
ALWR
advanced light-water reactor
AMAD
activity median aerodynamic diameter
AMASS
automated material accounting statistics system
AMCA
Air Moving and Conditioning Association
AMCF
alkali metal-cleaning facility
AMCO
Aerojet Manufacturing Company
AMD
alpha activity median diameter
AMDEL
Australian Mineral Development Laboratories
AMF
automated materials frisker
AMI
automatic motion inhibit
AMIC
Arkwright Mutual Insurance Co.
AMN
Ansaldo Meccanico Nucleare, SpA (Italy)
AMPERE
Atomes et Molecules pour Etudes Radio-Electriques (Switzerland)
AMRR
Army Materiels Research Reactor
AMS
aerial monitoring system
Allegations Management System
Army Map Service
AMSAC
ATWS (anticipated transient without scram) mitigating system actuation circuitry
AMU
aqueous makeup
atomic mass unit
A/N
alphanumeric
as needed
ANC
advanced nodal code
Aerojet Nuclear Company
ANCC
Associazione Nazionale per il Controllo della Combustione (Italy)
ANDIN
Associazione Nazionale di Ingegneria Nucleare (Italy)
ANEC
American Nuclear Energy Council
ANF
actinide nitride fuel
actinide nitride fueled
Advanced Nuclear Fuels Corporation
ANFO
ammonium nitrate and fuel oil
ANGRY
Anti-Nuclear Group Representing York
ANI
American Nuclear Industries
American Nuclear Insurers
authorized nuclear inspector
ANIM
Association of Nuclear Instrument Manufacturers
ANL
Argonne National Laboratory
ANMC
American National Metric Council
ANN
artificial neural network
ANO
Arkansas Nuclear One
ANOVA
analysis of variance
ANP
aircraft nuclear propulsion
ANPR
advance notice of proposed rulemaking
ANPRM
advance notice of proposed rulemaking
ANR
Association of Neutron Radiographers
ANRA
Armenian Nuclear Regulatory Authority
ANRE
Agency of Natural Resources and Energy (Japan)
ANS
American Nuclear Society
aquatic nuisance species
autodial network system
ANSI
American National Standards Institute
ANSTO
Australian Nuclear Science and Technology Organization (formerly AINSE)
AO
abnormal occurrence
air operator
auxiliary operator
axial offset
AOA
axial offset anomaly
AOC
action office contact
augmented operator capability
AOG
acid fractionator off-gas
acid off-gas
augmented off-gas
AOI
abnormal operating instruction
advance ordering information
AOO
anticipated operational occurrence
AOP
abnormal operating procedure
AOR
abnormal occurrence report
AOT
action outage time
allowable outage time
allowed outage time
AOTA
absorber open test assembly
AOV
air-operated valve
AP
access permit
access permittee
administrative procedure
alkaline permanganate
annulus pressurization
antennas and propagation
APA
Administrative Procedure Act
APC
administration and project control
agency program coordinator
argon purge cart
Atomic Power Construction Ltd. (United Kingdom)
APCA
Air Pollution Control Association
APCEF
Advanced Power Conversion Experimental Facility
APCO
Alabama Power Company
APD
axial power distribution
APDA
Atomic Power Development Associates, Inc.
APDMS
auxiliary power distribution monitoring system
axial power distribution monitoring system
APET
accident progression event tree
APEX
Advanced Plant Experiment
APFA
accelerator pulsed fast critical assembly
APHA
American Public Health Association
API
absolute position indication
American Petroleum Institute
antecedent precipitation index
APL
Applied Physics Laboratory (University of Chicago)
Arkansas Power & Light Co.
authorized possession limit
AP&L
Arizona Power & Light Company
APLHGR
average planar linear heat generation rate
APM
air particulate monitor
aluminum powder metallurgy
APP
advance procurement plan
APPA
American Public Power Association
APPR
Army Package Power Reactor
APR
advance production release
Army Power Reactor
automatic pressure relief
APRF
Aberdeen Pulsed Reactor Facility
APRM
average power range monitor
APS
accident-prone situation
American Physics Society
Arizona Public Service Co.
atomic power station
auxiliary power system
AP600
Advanced Plant, 600 MWe
APSR
axial power shaping rod
APSRA
axial power shaping rod assembly
APT
accelerator-produced tritium
Applied Physical Technology Incorporated
APTR
advanced pressure tube reactor
APU
auxiliary power unit
APWG
action plan work group
APWR
advanced pressurized-water reactor
AQL
acceptable quality level
AR
activity ratio
ARAC
atmospheric release advisory capability
ARACOR
Advanced Research and Applications Corp.
ARAVS
auxiliary and radwaste area ventilation system
ARB
Allegation Review Board
ARBOR
Argonne Boiling Water Reactor
ARC
alarm response card
Alliance Research Center
alternate repair criteria
alternative repair criteria
auxiliary relay cabinet
ARDA
Atomic Research and Development Authority
ARDM
age-related degradation mechanism
ARDUTLR
aging-related degradation unique to license renewal
ARE
aircraft reactor equipment
AREA
American Railway Engineering Association
Army Reactor Area
ARG
Accident Review Group (NRC)
Argonaut
Argonne nuclear assembly for university training
ARHCO
Atlantic Richfield Hanford Co.
ARI
alternate rod insertion
ATWS (anticipated transient without scram) rod injection
ARIS
automated reactor inspection system
ARM
area radiation monitor
ARMF
Advanced Reactivity Measurement Facility
ARMS
aerial radiological measurement and survey
aerial radiological measurements system
area radiation monitoring system
area radiological monitoring system
ARO
all rods out
ARP
accelerated requalification program
alarm response procedure
annunciator response procedure
ARPA
Archeological Resources Protection Act
ARPI
absolute rod position indication
ARR
Armour Research Reactor
Association for Radiation Research (United Kingdom)
ARRS
airborne radioactivity removal system
ARS
acute radiation syndrome
advance record system
air return system
amplified response spectrum/spectra
ART
aerosol release and transport
anticipatory reactor trip
ARTS
anticipatory reactor trip system
AS
action statement
Agreement State
air supply
auto sequential
auxiliary steam
A/S
air supply
ASA
American Standards Association (now ANSI)
ASADA
Atomic Space and Development Authority
ASC
Administrative Services Center
ASCE
American Society of Civil Engineers
ASCEG
Association of South Carolina Electric and Gas Investors
ASCII
American Standard Code for Information Interchange
ASCO
American Switch Co.
ASCS
Agricultural Stabilization and Conservation Service
ASD
adjustable speed drive
atmospheric steam dump
ASDP
alternative shutdown procedure
ASEE
American Society of Electrical Engineers
ASEP
accident sequence evaluation program
ASG
auxiliary steam generator
ASGT
asymmetric steam generator transient
ASGTPTF
asymmetric steam generator transient protective trip function
ASHAE
American Society of Heating and Air Conditioning Engineers
ASHRAE
American Society of Heating, Refrigeration and Air Conditioning Engineers
ASI
adverse system interaction
axial shape index
ASIS
American Society for Industrial Security
ASL
approved suppliers list
ASLAB
Atomic Safety and Licensing Appeal Board (NRC)
ASLAP
Atomic Safety and Licensing Appeal Panel (NRC)
ASLB
Atomic Safety and Licensing Board (NRC)
ASLBP
Atomic Safety and Licensing Board Panel (NRC)
ASM
American Society for Metals (now ASM International)
ASME
American Society of Mechanical Engineers
ASME
CodeAmerican Society of Mechanical Engineers Boiler and Pressure Vessel Code
ASNT
American Society for Nondestructive Testing
Australian School of Nuclear Technology
ASP
accident sequence precursor
administrative site procedure
auxiliary shutdown panel
ASPEA
Association Suisse pour l'Energie Atomique (Switzerland)
ASQC
American Society for Quality Control
ASR
automatic send and receive
ASS
auxiliary steam system
ASSE
American Society of Safety Engineers
ASSP
acoustics, speech, and signal processing
ASTM
American Society for Testing and Materials
ASTPO
Accident Source Term Program Office
ASTR
Aerospace Systems Test Reactor
ASW
auxiliary saltwater
auxiliary service water
AT
acceptable test
acceptance tag
acceptance test
ATC
adiabatic toroidal compressor
ATEL
Aare Tessin Aktiengesellschaft für Elektrizität (Switzerland)
ATEN
Association Technique de l'Energie Nucléaire (France)
Association Technique pour la Production et l'Utilisation de l'Energie Nucléaire (France)
ATF
acceptance test facility
Alcohol, Tobacco and Firearms, Bureau of (U.S. Department of Treasury)
ATH
artificial time history
ATOG
abnormal transient operational guideline
anticipated transient operating guideline
ATP
acceptance test plan
acceptance test procedure
A&TP
assembly and test pit
ATR
advanced test reactor
ATRCE
advanced test reactor critical experiment
ATS
agency training system
Arkwright Technical Services, Inc.
Atomtekniska Sällskapet i Finland (Finland)
ATSR
Argonne Thermal Source Reactor
ATT
aerosol transport test
automatic turbine tester
ATTU
ATWS (anticipated transient without scram) transmitter trip unit
ATU
analog trip unit
ATWS
anticipated transient without scram
ATWS-RPT
anticipated transient without scram--recirculation pump trip
ATWT
anticipated transient without trip
AU
authorized user
AUDIT
automatic unattended detection inspection transmitter
AUEA
auxiliary utility equipment area
AUO
auxiliary unit operator
AUT
automated ultrasonic test
AUTODIN
automated digital network
AUTOS
agency upgrade of technology for office systems
AUXI-ATOME
Société Auxiliaire pour l'Energie Atomique (France)
AVB
antivibration bar
AVIS
atomic vapor isotope separation
AVLIS
atomic vapor laser isotope separation
AVMS
annulus vacuum maintenance system
AVR
Arbeitsgemeinschaft Versuchsreaktor, G.m.b.H. (Germany)
automatic volume recognition
AVSS
automated vendor selection system
AVT
all-volatile treatment
AVV
atmospheric vent valve
AW
acid waste
AWCC
active well coincidence counter
AWG
American wire gauge
AWNS
ABB Westinghouse Nuclear Services
AWP
automatic withdrawal prohibit
AWRE
Atomic Weapons Research Establishment (United Kingdom)
AWS
American Welding Society
AWSF
alpha waste storage facility
AWWA
American Water Works Association
AZPS
Arizona Public Service Co.

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BA
biological assessment
B/A
budget authority
BAA
broad agency announcement
BAC
blood alcohol content
boric acid concentrator
BACT
best available control technology
BAF
bioaccumulation factor
bottom of active fuel
BAM
Bundesanstalt für Materialforschung und -prüfung (Germany)
BAMT
boric acid mix tank
BAP
branch arm piping
BAPE
branch arm piping enclosure
BAPL
Bettis Atomic Power Laboratory
BAPS
branch arm piping shielding
BARC
Bhabha Atomic Research Centre (India)
BART
butterfly analysis and review test
BAST
boric acid storage tank
BAT
backup auxiliary transformer
best available technology
boric acid tank
boric acid transfer
BATAN
Badan Tenaga Atom Nasional (Indonesia)
BATEA
best available technology economically available
BATF
Bureau of Alcohol, Tobacco and Firearms (U.S. Department of Treasury)
BAWTR
Babcock & Wilcox Nuclear Development Center Test Reactor
BBC
Brown Boveri et Cie (Switzerland)
BBR
Babcock-Brown Boveri Reaktor, G.m.b.H. (Germany)
BBRR
Brookhaven Beam Research Reactor
BBS
battery backup system
bulletin board system
BBV
Bayrische Biologische Versuchsanstalt (Germany)
BC
benign contamination
branch chief
BCD
Battelle Columbus Division
binary coded decimal
BCHFT
beyond critical heat flux test
BCL
Battelle Columbus Laboratories
Bechtel client letter
BCMS
boron concentration measurement system
BCS
Boeing Computer Services
BCT
best conventional technology
BD
blowdown
BDAT
best demonstrated available technology
BDBA
beyond-design-basis accident
BDBE
beyond-design-basis event
BDE
beyond demonstrable effect
BD/ECC
blowdown/emergency core cooling
BDHT
blowdown heat transfer
BDPS
boric dilution protection system
BDT
best demonstrated technology
BE
best estimate
binding energy
bounding event
BEA
Bureau of Economic Analysis
BEAR
Biological Effects of Atomic Radiation, Committee on the
BEC
beginning-of-equilibrium cycle
BECO
Boston Edison Co.
BEEN
Bureau d'Etude de l'Energie Nucléaire (Belgium)
BEF
best-estimate flow
BEIR
Biological Effects of Ionizing Radiation, Committee on the
BEN
Bureau d'Etudes Nucléaires, S.A. (Belgium)
BEPO
British Experimental Pile Operation
BFN
Browns Ferry Nuclear Power Plant
BFNP
Browns Ferry Nuclear Power Plant
BFNPP
Browns Ferry Nuclear Performance Plan
Browns Ferry Nuclear Power Plant
BFO
best and final offer
BFY
budget fiscal year
BG&E
Baltimore Gas & Electric Co.
BGL
below ground level
BGRR
Brookhaven Graphite Research Reactor
BGV
below ground vault
BH
Blue Hills Station
BHEC
Bangor Hydro-Electric Co.
BHEP
basic human error probability
BHL
bottom of heated length
BHP
biological hazard potential
BHS
Blue Hills Station
BHSP
basic human success probability
BI
background information
BIA
buyers information advisory
BIF
basic inflow
BIFEN
Banque Internationale pour le Financement de l'Energie Nucléaire (France)
BIOMASS
Biosphere Modeling and Assessments (project)
BIOMOVS
IIBiosphere Model Validation Study, Phase II
BIOS
basic input-output system
biological investigation of space
BIR
boron injection recirculation
BIST
boron injection surge tank
BIT
boron injection tank
BKW
Bernische Kraftwerke, A.G. (Switzerland)
BLBE
beyond-licensing-basis event
BLIS
baffle/liner interface seal
BLM
Bureau of Land Management
BLP
basket loading pool
BLTC
bottom loading transfer cask
BM
bill of material
boron measurement
BMEP
brake mean effective power
brake mean effective pressure
BMEWS
ballistic missile early warning system
BMFT
Bundesministerium für Forschung und Technologie (Germany)
BMI
Battelle Memorial Institute
BML
bidders mailing list
bulk material length
BMR
Bureau of Mineral Resources (Australia)
BMRR
Brookhaven Medical Research Reactor
BMS
boron management system
boron measurement system
BMT
basement melt-through
BN
Belgonucléaire S. A. (Belgium)
board notification
Buestra Neutron (Soviet-designed fast-neutron reactor)
BNC
Berkeley Nucleonics Corporation
BNDC
British Nuclear Design & Construction Ltd.
BNEC
British Nuclear Energy Conference
BNES
British Nuclear Energy Society
BNF
British Nuclear Forum
BNFL
British Nuclear Fuels, Limited
BNFP
Barnwell Nuclear Fuel Plant
BNI
Bechtel National, Inc.
BNL
Brookhaven National Laboratory
BNP
Bellefonte Nuclear Plant
BNWL
Battelle Northwest Laboratory
BO
biological opinion
B/O
budget overlay
B&O
bulletin and order
BOA
basic order agreement
blanket order agreement
BOC
beginning of cycle
Bevitron orbit code
bottom of conduit
budget object classification
BOD
biochemical oxygen demand
biological oxygen demand
BOEC
beginning-of-equilibrium cycle
BOG
burner off-gas
BOL
beginning of life
BONUS
boiling nuclear superheat reactor
BONUS-CX
boiling nuclear superheat critical experiment
BOP
balance of plant
BOPSSAR
balance-of-plant standard safety analysis report
BORAX
boiling-water reactor experiment
BORE
beryllium oxide reactor experiment (formerly EBOR)
B&OTF
bulletins and orders task force
B/P
blueprint
BPA
blanket purchase agreement
Bonneville Power Administration
BPC
Bechtel Power Corporation
BPF
blueprint file
BPFM
bypass flow module
BPHA
benzoylphenylhydroxylamine
BPID
book physical inventory difference
BPN
breakdown pulse noise
BPNL
Battelle Pacific Northwest Laboratory
BPR
beryllium physics reactor
burnable poison rod
business process redesign
business process reengineering
BPRA
burnable poison rod assembly
BPV
boiler and pressure vessel
bypass valve
B&PV
boiler and pressure vessel
BPVC
Boiler and Pressure Vessel Committee
BPWS
blanked position withdrawal sequence
Bq
becquerel
BR
breeder reactor
breeding ratio
B&R
Brown and Root, Inc.
budget and reporting
Burns and Roe, Inc.
BRC
below regulatory concern
Breeder Reactor Corporation
Bureau of Radiation Control (State of Texas)
BREDAT
Breda Termomeccanica, SpA (Italy)
BREN
Bare Reactor Experiment Nevada
BREVATOME
Société Française pour la Gestion des Brevets d'Application Nucléaire (France)
BRG
budget review group
BRH
Bureau of Radiological Health
BRP
Bureau of Radiation Protection
BRPNP
Big Rock Point Nuclear Plant
BRR
Battelle Research Reactor
Brookhaven Research Reactor
BRS
Bibliographic Retrieval System
boron recycle system
BRWM
Board on Radioactive Waste Management
BS
Braidwood Station
Byron Station
B/S
bistable
BSEP
Brunswick Steam Electric Plant
BSF
bulk shielding facility
BSI
British Standards Institution
BSL
Bignier Schmid-Laurent (France)
BSR
Board of Standards Review (American National Standards Institute)
bulk shielding reactor
BSS
basic safety standard
BST
bleed storage tank
blowdown suppression tank
boron storage tank
BT
boiling transition
broadcast technology
BTFA
benzoyltrifluoroacetone
BTP
backfit test program
branch technical position
BTR
boron thermal regeneration
BTRS
boron thermal regeneration system
BTS
Brazilian thorium sludge
BUSS
backup scram system
B&V
Black & Veatch
BVFA
Bundesversuchs- und Forschungsanstalt Arsenal (Austria)
BVPS
Beaver Valley Power Station
B&W
Babcock & Wilcox Co. (now Framatome)
B&WC
Babcock & Wilcox Canada
BWC
Bingham-Willamette Co.
BWF
building wake factor
B&WFC
Babcock & Wilcox Fuel Co.
BWIP
basalt waste isolation program
B&WNT
Babcock & Wilcox Nuclear Technologies
B&WOG
Babcock & Wilcox Owners Group
BWR
boiling-water reactor
BWROG
Boiling Water Reactor Owners Group
BWRVIP
Boiling Water Reactor Vessel and Internals Project
B&WSSAR
Babcock & Wilcox Standard Safety Analysis Report
BWST
borated water storage tank

C

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CA
charge amplifier
construction authorization
contract authorization
critical assembly
C/A
corrective action
CAA
Clean Air Act
CAC
carrier access code
containment atmosphere control
CACS
containment air cooling system
core auxiliary cooling system
CACW
core auxiliary cooling water
CACWS
core auxiliary cooling water system
CAD
computer-aided design
construction aid document
containment atmosphere dilution
CAES
compressed air energy storage
CAF
chemical analysis facility
CAFEE
critical assembly fuel element exchange
CAFTA
cutset and fault tree analysis
CAGT
collaborative advanced gas turbine
CAHE
core auxiliary heat exchanger
CAI
construction action item
computer-assisted instruction
CAIT
corrective action investigation team
CAL
confirmatory action letter
corrective action letter
CALUTRON
California University Cyclotron
CAM
constant air monitor
containment atmospheric monitoring
continuous air monitor
CAMEL
component and material evaluation loop
CAMEN
Centro Autònomo Militari Energia Nucleare (Italy)
CAN
Citizen's Awareness Network
CANDU
Canadian Deuterium-Natural Uranium Reactor
Canadian Deuterium Uranium Reactor
Canadian Natural-Uranium, Heavy-Water-Moderated and -Cooled Power Reactor
CANE
Connecticut Aircraft Nuclear Experiment
CAOC
constant axial offset control
CAP
codes and paging
continuous audit program
corrective action plan
corrective action program
CAPCG
Central Area Power Coordination Group
CAPES
containment atmosphere purge exhaust system
CAPS
cell atmosphere processing system
construction advanced planning and sequencing
CAQ
condition adverse to quality
CAQR
condition adverse to quality report
CAR
condenser air removal
configuration acceptance review
containment air recirculation
control advisory release
corrective action report
CARA
Compagnie d'Applications et de Recherches Atomiques (France)
CARATOM
Compagnie d'Applications et de Recherches Atomiques (France)
CARC
containment air recirculation and cooling
CARS
condenser air removal system
containment atmosphere release system
containment atmosphere recirculation system
CAS
central alarm station
central alarm system
chemical addition system
circuits and systems
compressed air system
CASE
Citizens Action for Safe Environment
Citizens Association for Sound Energy
consolidated aerospace supplier evaluation
coordinating agency for supplier evaluation
CAT
chemical addition tank
computerized axial tomography
conditionally accepted tag
construction appraisal team
crack arrest technology
crack arrest temperature
crack arrest test
CATD
corrective action tracking document
CAV
crack arrest verification
CAVALIER
Cooperatively Assembled Virginia Low-Intensity Educational Reactor
CB
containment building
control building
CBAST
concentrated boric acid storage tank
CBD
Commerce Business Daily
CBDT
cause-based decision tree (method)
CBE
Citizens for a Better Environment
CBECS
control building environmental control system
CBI
Chesapeake Bay Institute
CBI Industries (formerly Chicago Bridge and Iron Co.)
CB&I
Chicago Bridge and Iron Co. (later CBI Industries)
CBL
Chesapeake Bay Laboratory
Chesapeake Biological Laboratory
CBLA
cost-beneficial licensing action
CBM
circuit breaker manufacturer
CBP
condensate booster pump
CBPC
Corn Belt Power Cooperative
CBPT
closed-loop in-reactor assembly backup plug tool
CBR
commercial breeder reactor
CBSR
coupled breeding superheating reactor
CBV
containment building ventilation
CC
centrifugal charging
coarse control
component check
component cooling
CCAS
containment cooling actuation signal
CCB
change control board
chemical cleaning building
CCCS
core components cleaning system
core components conditioning station
core components conditioning system
CCD
coarse control damper
counter-current digestion
CCDF
complementary cumulative distribution function
CCDP
conditional core damage probability
CCF
common-cause failure
CCFA
common-cause failure analysis/analyses
CCFL
counter-current flow limitation
CCFP
conditional containment failure probability
CCGC
containment combustible gas control
CCHEN
Comisión Chilena de Energía Nuclear (Chile)
CCI
core concrete interaction
CCM
SulzerCompagnie de Construction Mécanique Sulzer (France)
CCN
contract change notice
CCNB
Concerned Citizens for the Nuclear Breeder
CCNPP
Calvert Cliffs Nuclear Power Plant
CCP
centrifugal charging pump
chemical control procedure
core component pot
CCRC
core component receiving container
CCRS
computerized cable routing system
CCS
Carroll County Station
commitment control system
component cooling system
condensate cleanup system
condensate cooling system
containment cooling system
CCSS
centrifugally cast stainless steel
CCSW
component cooling service water
CCTF
cylindrical core test facility
CCTL
core component test loop
CCTV
closed-circuit television
CCU
containment cooling unit
CCW
closed cooling water
component cooling water
compound cooling water
condenser circulating water
condenser cooling water
counterclockwise
CCWS
closed cooling water system
component cooling water system
CD
civil defense
C/D
cooldown
CDA
containment depressurization actuation
core disruptive accident
CDBA
containment design-basis accident
CDC
Center for Disease Control
computer design code
Control Data Corp.
CDE
condensate demineralization effluent
CDF
core damage frequency
cumulative damage function
CDM
central data management
CDN
corporate data network
CDP
cask decontamination pit
CDPA
Civil Defense Preparedness Agency
CDPr
core damage probability
CDR
conceptual design requirement
CDRG
Catastrophic Disaster Response Group
CD-ROM
compact disk/read-only memory
CDS
cask decontamination station
component disassembly station
computer data screening
conceptual design study
condensate demineralization subsystem
current disposal site
CDV
capacitance discharge vaporization
CE
Combustion Engineering, Inc.
Commonwealth Edison Co.
conductivity element
Consumer Electronics
Corps of Engineers, U.S. Army
C/E
calculation/experiment
C-E
Combustion Engineering, Inc.
CEA
Cambridge Electron Accelerator
Chesapeake Energy Alliance
Commissariat à l'Energie Atomique (France)
control element assembly
Council of Economic Advisors
CEAC
control element assembly calculator
CEADS
control element assembly drive system
CEAN
Centre d'Etudes pour les Applications de l'Energie Nucléaire (Belgium)
CEBELCOR
Centre Belge d'Etude de la Corrosion (Belgium)
CEC
Citizens Energy Council
Claiborne Enrichment Center
Commission of the European Communities
CECO
Commonwealth Edison Co.
cost estimate change order
CECS
containment environmental control system
CEDE
committed effective dose equivalent
CEDM
control element drive mechanism
CEDMCS
control element drive mechanism control system
CEDS
control element drive system
CEEA
Comisión Ecuatoriana de Energia Atómica (Ecuador)
Communauté Européenne de l'Energie Atomique
CEEN
Centre d'Etude de l'Energie Nucléaire (Belgium)
CEER
Center for Energy and Environment Research (Puerto Rico)
CEFILAC
Compagnie du Filage des Métaux et des Joint Curty (France)
CEG
Contractor Engineering Group
CEGB
Central Electricity Generating Board (United Kingdom)
CEHA
contact equipment handling area
CEIC
Cleveland Electric Illuminating Co.
CEICO
Cleveland Electric Illuminating Co.
CEL
carbon equilibrium loop
coating exempt log
CEM
Compagnie Electro-Mécanique (France)
CEN
Centre d'Etudes Nucléaires (France)
Centre d'Etude de l'Energie Nucléaire (Belgium)
CENC
Centre d'Etudes Nucléaires de Cadarache (France)
CENFAR
Centre d'Etudes Nucléaires de Fontenay-aux-Roses (France)
CENG
Centre d'Etudes Nucléaires de Grenoble (France)
CENS
Centre d'Etudes Nucléaires de Saclay (France)
CENUSA
Centrales Nucleares, S.A. (Spain)
CENY
Consolidated Edison Co. of New York
CEOG
Combustion Engineering Owners Group
CEPC
Central Electric Power Cooperative, Inc.
CEQ
Council on Environmental Quality
CER
complete engineering release
condition evaluation report
critical experiment reactor
CERC
Coastal Engineering Research Center, U.S. Army
CERCA
Centre de Recherches pour Combustibles Atomiques (France)
Compagnie pour l'Etude et la Réalisation de Combustibles Atomiques (France)
CERCLA
Comprehensive Environmental Response, Compensation, and Liability Act
CERES
Coalition for Environmentally Responsible Economies
CERL
Construction Engineering Research Laboratory
CERMET
ceramic and metal (fuel)
CERT
candidate evaluation, certification, and selection record
constant extension rate test(ing)
Council of Energy Resources Tribes
CES
critical experiment station
CESNEF
Centro di Studi Nucleari Enrico Fermi (Italy)
CESR
colliding electron-beam storage ring
CESSAR
Combustion Engineering Standard Safety Analysis Report
CET
containment event tree
core exit thermocouple
critical experiment tank
CETR
Consolidated Edison Thorium Reactor
CETS
control element test stand
CEVAR
consumable-electrode vacuum-arc remelt
CF
column feed
confinement factor
continuous flow
core flooding
correction factor
CFAR
component failure analysis report
CFB
C.F. Braun and Co.
CFC
Constructions Férroviaires du Centre, S.A. (Belgium)
CFCCS
condensate and feedwater chemistry control system
CFCU
containment fan cooler unit
CFD
cell floor drain
CFDT
Confédération Française Démocratique du Travail (France)
CFE
clandestine fission explosive
Comisión Federal de Electricidad (Mexico)
CFFTR
Canadian Fusion Fuel Technology Project
CFI
core flooding interlock
CFM
containment failure mode
CFO
Chief Financial Officer
CFR
Code of Federal Regulations
CFR
commercial fast reactor
condensate filter demineralizer
CFRE
circulating-fuel reactor experiment
CFRMF
coupled fast reactor measurement facility
CFS
cavity fission source
condensate and feedwater system
core flood system
core former structure
CFT
core flood tank
core flooding tank
CFTC
cooler flusher tank cell
CFTE
cooler flusher tank equipment
CFTL
component flow test loop
CFU
cumulative fatigue usage
CFUR
Citizens for Fair Utility Regulation
CFW
condensate and feedwater
CFWS
condensate and feedwater system
CGCS
combustion gas control system
CGE
Canadian General Electric
CGEC
Cincinnati Gas and Electric Co.
CGEL
cover gas evaluation loop
CGI
commercial-grade item
CGMS
cover gas monitoring subsystem
cGy
centigray
CHAP
composite HTGR (high-temperature gas reactor) analysis program
CHAT
CLIRA (closed-loop in-reactor assembly) holddown assembly tool
CHCF
component handling and cleaning facility
CHEP
conditional human error probability
CHF
critical heat flux
CHFR
critical heat flux ratio
CHGE
Central Hudson Gas and Electric Corp.
CHLA
candidate high-level action
CHLW
commercial high-level waste
CHMT
components, hybrids, and manufacturing technology
CHN
construction hold notice
CHP
certified health physicist
C&HP
chemistry and health physics
CHR
cooling water/hot water return
CHRS
containment heat removal system
CHU
centigrade heat unit
CHWR
cooling water/hot water return
C/HWR
cooling water/hot water return
C-HWR
cooling water/hot water return
CI
center island
chemical injection
containment integrity
containment isolation
C&I
control and instrumentation
Ci
curie
CIA
Central Intelligence Agency
containment isolation A
CIAS
containment isolation actuation signal
CIB
containment isolation B
CIC
carrier identification code
CICA
Competition in Contracting Act
CICAF
Compagnie Industrielle des Combustibles Atomiques Frittes (France)
CID
component identification
CIEMAT
Centro de Investigaciones Energeticas, Medio Ambientales (Spain)
CIIP
condenser inservice inspection program
CILRT
containment integrated leak rate test
CIMI
Compagnia Italiana Montaggi Industriali, SpA (Italy)
CINDA
computer index of neutron data
CIO
Chief Information Officer
CIP
containment improvement program
C/IP
construction/inspection procedure
CIPC
Central Iowa Power Cooperative
CIPP
customized inspection program pilot
customized inspection program process
customized inspection planning process (now IPAP)
CIR
Canada-India Reactor (India)
CIREA
Commission Interministérielle des Radioéléments Artificiels (France)
CIRGA
Critical Isotope Reactor, General Atomic Co.
CIRRPC
Committee on Interagency Radiation Research and Policy Coordination
CIRS
containment iodine removal system
CIS
chemical injection system
containment isolation signal
containment isolation system
contract information sheet
CISDEN
Centro Italiano di Studi di Diritto dell'Energia Nucleare (Italy)
CISE
Centro Informazioni Studi Esperienze, SpA (Italy)
CISF
centralized interim storage facility
CISIP
condenser inservice inspection program
CISSCO
Comprehensive Information Systems Support Consolidation
CIT
conductivity indicator transmitter
corporate investigation team
critical incident technique
CIV
center island vessel
combined intercept valve
combined intermediate valve
containment isolation valve
CIWA
condition identification work authorization
CL
closed loop
containment leakage
CLA
cold-leg accumulator
CLAA
Centre Lyonnais d'Applications Atomiques (France)
CLB
current licensing basis
CLC
closed-loop condensate
CLCGM
closed-loop cover gas monitor
CLCIS
closed-loop control and instrumentation system
CLCS
consequence limiting control system
CLCV
cold-leg check valve
CLCW
closed-loop cooling water
CLEI
Cleveland Electric Illuminating Co.
CLEM
closed-loop ex-vessel machine
CLEMT
closed-loop ex-vessel machine transporter
CLIRA
closed-loop in-reactor assembly
CLIV
cold-leg isolation valve
CLJA
closed-loop jumper assembly
CLLRW
commercial low-level radioactive waste
CLOF
complete loss of feedwater
CLOFA
complete loss-of-fluid accident
CLOHS
complex loss-of-heat sink
CLP
Connecticut Light and Power Co.
CLR
core lateral restraint
CLRWS
clean liquid radioactive waste system
CLS
cask loading station
closed-loop system
consequence limiting system
CLSD
Central Laboratories Services Dept. (TVA)
CLSMDA
closed-loop-system meltdown accident
CLWR
commercial light-water reactor
CM
coarse mixing
condition monitoring
configuration management
coolant mixing
core melt
corrective maintenance
CMA
classified mail address
CMAA
Crane Manufacturers Association of America
CMC
component modification card
core monitoring computer
CMCI
core-melt/coolant interaction
CMEA
Council for Mutual Economic Assistance (U.S.S.R.)
CMEP
Critical Mass Energy Project
CMF
central maintenance facility
common-mode failure
core-melt frequency
CMFA
common-mode failure analysis/analyses
CMFLPD
core maximum fraction of limiting power density
CMI
care and maintenance instruction
CML
Critical Mass Laboratory
CMM
core mechanical mockup
CMMF
component maintenance and mockup facility
CMOD
crack mouth opening displacement
CMP
CLEM (closed-loop ex-vessel machine) maintenance pit
coastal management program
condition monitoring program
configuration management plan
controlled materials production
CMPC
Central Maine Power Co.
CMRG
Core Melt Review Group
CMT
core makeup tank
CMTR
certified material test report
certified mill test report
CNA
Canadian Nuclear Association
Centrale Nucléaire des Ardennes (Belgium)
CNB
Centrale Nucléaire Belge (Belgium)
CNC
condensation nuclei counter
CNEA
Comisión Nacional de Energía Atómica (Argentina)
CNEN
Comisión Nacional de Energía Nuclear (Mexico)
Comissão Nacional de Energía Nuclear (Brazil)
Comitato Nazionale per l'Energia Nucleare (Italy)
Conseil National de l'Energie Nucléaire (Luxembourg)
CNET
Center for Nuclear Engineering and Technology
CNEUPEN
Commission Nationale pour l'Etude de l'Utilisation Pacifique de l'Energie Nucléaire (Belgium)
CNFP
commercial nuclear fuel plant
CNI
Consolidated National Intervenors
CNN
Cable Network News
CNNA
China National Nuclear Corporation
CNO
Chief Nuclear Officer
CNPP
corporate nuclear performance plan
CNR
Committee for Nuclear Responsibility
CNRA
Committee on Nuclear Regulatory Activities (of the OECD-NEA)
CNRAG
corporate nuclear review and audit group
company nuclear review and audit group
CNRM
Centre National de Recherches Métallurgiques (Belgium)
CNRN
Comitato Nazionale per le Ricerche Nucleare (Italy)
CNRS
Centre National de la Recherche Scientifique (France)
CNS
Catawba Nuclear Station
Cherokee Nuclear Station
Cooper Nuclear Station
corporate nuclear safety
CNSI
Chem-Nuclear Systems, Inc.
CNSNS
Comisión Nacional de Seguridad Nuclear y Salvaguardias (Mexico)
CNSR
combination neutron source rod
CNWRA
Center for Nuclear Waste Regulatory Analyses
CO
change order
check open
chief operator
confirmatory order
contracting officer
COB
close of business
COBOL
common business-oriented language
COBRA
Consolidated Omnibus Budget Reconciliation Act
coolant boiling and in-rod array
COC
certificate of compliance
certificate of conformance
Cleveland open cup (method)
COCA
consent order and compliance agreement
COCORP
Consortium of Continental Reflection Profiling
COD
chemical oxygen demand
crack opening displacement
COE
Corps of Engineers, U.S. Army
COFINATOME
Compagnie de Financement de l'Industrie Atomique (France)
COG
cell off-gas
condenser off-gas
continuity of government
COGAP
combustion gas analyzer program
COI
conflict of interest
COL
combined operating license
construction/operating license
COLR
core operating limit report
COLSS
core operating limit supervisory system
core operating limit support system
COM
communications
computer output on microfiche
computer output on microfilm
COMET
computer-operated management evaluation technique
COMRADEX
containment and meteorology for radiation exposure
COMSEC
communications security
CONAGT
Committee on Nuclear Air and Gas Treatment (ASME)
CONS
Consolidation, Office of (NRC)
COOP
continuity of operations plan
COPPS
committee on power plant siting
COPS
containment overpressure protection systems
CORAPRO
Contrôle-Radioprotection (Belgium)
CORAR
Council on Radionuclides and Radiopharmaceuticals
COREN
Combustibili per Reattori Nucleari, SpA (Italy)
CORS
catalytic oxygen removal system
COS
change of station
COTS
commercial off-the-shelf
COV
center of vortex
CP
Callaway Plant
change proposal
charging pump
Chicago Pile
civil penalty
cold pipe
column product
Comanche Peak
Commission paper
construction permit
construction procedure
containment purge
coolant pump
critical power
C/P
current/pneumatic
CP-5
Chicago Pile #5
CPA
Cooperative Power Association
CPC
Consumers Power Co.
contact process cell
controlled-potential coulometer
core protection calculator
core protection computer
CPCo
Consumers Power Company
CPCSF
construction permit containment support fixture
CPD
condensate pump discharge
CPDD
conceptual project design description
CPDO
containment performance design objective
CPDS
condensate polishing demineralizer system
CPE
contractor performance evaluation
CPER
construction permit environmental report
CPFF
cost plus fixed fee
CPI
center pressure index
containment performance improvement
CPIC
Capital Planning and Investment Control
CPIS
containment purge isolation signal
CP&L
Carolina Power & Light Co.
cpm
count per minute
CPM
critical path method
CPP
Center for Plutonium Production
coil power programmer
containment pre-entry purge
containment protection professional
CPPMU
containment pre-entry purge makeup
CPPR
construction permit for a power reactor
CPR
critical power ratio
CPRR
construction permit for a research reactor
CPRRG
Comanche Peak Report Review Group
CPRT
Comanche Peak Response Team
CPRW
condensate polishing regeneration waste
CPRWCT
condensate polishing regeneration waste collection tank
CPS
canister positioning system
cathodic protection system
Clinton Power Station
condensate polishing system
containment purge system
conversion program system
core and plant system
cps
count per second
CPSC
Consumer Products Safety Commission
CPSCI
central personnel security clearance index
CPSES
Comanche Peak Steam Electrical Station
CPU
central processing unit
CPVC
chlorinated polyvinyl chloride
CPWF
cementitious pelletized waste form
CQ
Congressional Quarterly
CQAA
corporate quality assurance audit
CQE
cognizant quality engineer
critical quality element
CR
Chicago Reactor
civil rights
condition report
conditional release
containment rupture
contractor report
control rod
control room
CR
Congressional Record
CRA
control rod assembly
CRAC
calculation of reactor accident consequences
consequences of reactor accident code
CRACS
control room air conditioning system
CRATS
control room air temperature system
CRAVS
control room area ventilation system
CRB
control rod blade
cost review board
CRBR
Clinch River Breeder Reactor
controlled-recirculation boiling-water reactor
CRBRP
Clinch River Breeder Reactor Plant
Clinch River Breeder Reactor Project
CRC
critical reactor component
CRCPD
Conference of Radiation Control Program Directors
CRCTA
composite reactor components test activity
CRD
control rod drive
control rod driveline
CRDA
control rod drop accident
CRDCS
control rod drive control system
CRDD
control rod disconnect driveline
CRDHS
control rod drive hydraulic system
CRDM
control rod drive mechanism
CRDMS
control rod drive mechanism shroud
CRDR/A
control room design review/audit
CRDS
control rod drive system
CRDVF
control rod drive ventilating fan
CREATE
collective radiation exposure (NRC performance indicator)
control room envelope
controlled residual element
CREACS
control room emergency air cleanup system
CREATCS
control room emergency air temperature control system
CREDO
centralized reliability data organization
CREFAS
control room emergency fresh air system
CREFS
control room emergency filtration system
CREHVACS
control room emergency heating, ventilation, and air conditioning system
CREST
Committee on Reactor Safety and Technology
CREV
control room emergency ventilation
CREVS
control room emergency ventilation system
CRF
capacity reduction factor
correspondence routing form
CRFAS
control room fresh air system
CRG
Center Review Group
CRGR
Committee To Review Generic Requirements (NRC)
CRGT
control rod guide tube
CRI
Centre de Recherches et d'Irradiations (France)
control room indicator
control room isolation
criterion-referenced instruction
CRIS
control room isolation signal
CRM
Centre de Recherches Métallurgiques (Belgium)
Centrum voor Research in de Metallurgie (Belgium)
certified reference material
chemical remnant magnetization
core restraint mechanism
count rate meter
CRNGP
Crystal River Nuclear Generating Plant
CRNL
Chalk River Nuclear Laboratories
CRO
control room operator
CRPI
control rod position indication
CRS
conductivity recording switch
Congressional Research Service
containment recirculation spray
CRSS
containment recirculation spray system
CRT
cathode-ray tube
collet retaining tube
CRTF
core restraint test facility
CRU
combined rotating unit
CRUD
Chalk River unidentified deposit
CRVICS
containment and reactor vessel isolation control system
CRW
clean radwaste
CRWSS
condensate and refueling water storage system
CS
carbon steel
communications system
component support
containment safety
containment spray
contract specialist
control system
core spray
current status
CSA
chemical storage area
core special assembly
core structure accident
CSAS
containment spray actuating signal
containment spray actuating system
containment spray actuation signal
CSAU
code, scaling, applicability, and uncertainty (methodology)
CSB
core support barrel
CSC
Computer Sciences Corporation
containment spray cooling
core support cylinder
CSCC
caustic stress-corrosion cracking
CSCS
core standby cooling system
CSD
cold shutdown
constant speed drive
CSDD
conceptual system design description
CSDF
core segment development facility
CSE
components and structures engineering
containment steam explosion
containment systems experiment
CSF
central service facility
condensate storage facility
containment support fixture
Coulter Steel and Forge
critical safety factor
critical safety function
CSHX
containment spray heat exchange
CSIP
containment safety initiatives program
CSIS
containment spray injection system
CSN
Consejo de Seguridad Nuclear (Spain)
CSNE
Citizens for Safe Nuclear Energy
CSNI
Committee on the Safety of Nuclear Installations (NEA)
CSOEC
Columbus and Southern Ohio Electric Co.
CSP
Coalition for Safe Power
conditional success probability
containment spray pump
core spray pump
CSPT
core support performance test
CSR
cable spreading room
CSRS
containment spray recirculation system
CSS
cask support structure
cast stainless steel
condensate storage system
containment spray system
core spray system
core support structure
CST
condensate storage tank
CSTB
condensate storage tank building
CSTR
continuously stirred tank reactor
CSTS
condensate storage and transfer system
construction and startup/turnover surveillance group
cSv
centisievert
CSWS
Central and Southwest Services, Inc.
CT
cable test
CLEM (closed-loop ex-vessel machine) transporter
compact tension
computerized tomography
cooling tower
current transformer
CTBT
Comprehensive (Nuclear) Test Ban Treaty
CTD
charged tape detection
CTF
cask tilting fixture
CTG
combustion turbine generator
C/Th
carbon-to-thorium atomic ratio
CTI
Cooling Tower Institute
CTL
Canatom Ltd. (Canada)
CTM
cable transfer machine
collimation test module
CTOS
cassette operations system
CTP
construction test procedure
controlled temperature profile
CTR
certified test result
controlled thermonuclear reactor
CTRM
control room
CTS
concentrate transfer system
condensate transfer and storage
current technical specification
CTT
cask transfer tunnel
CTTP
cask transport and testing program
CTVC
cable tray vertical chase
C/U
carbon-to-uranium atomic ratio
CUB
Citizen's Utility Board
CUC
cask unloading cell
CUF
cumulative usage factor
CUP
cask unloading pool
CURE
Citizens United for Responsible Energy
CUSP
City Utilities of Springfield
CUWS
cask unloading warm shop
CV
check valve
containment vessel
control valve
CVA
consecutive-valve actuation
CVAS
controlled ventilation area system
CVC
chemical and volume control
CVCS
charging and volume control system
chemical and volume control system
CVH
containment vent header
CVI
certified vendor information
containment ventilation isolation
CVIS
containment ventilation isolation signal
CVL
continuous vent line
CVN
Charpy V-notch
construction verification notification
CVP
continuous vacuum priming
CVPETS
condenser vacuum pump effluent treatment system
CVPSC
Central Vermont Public Service Corp.
CVPV
containment vacuum pump valve
CVTR
Carolinas-Virginia Tube Reactor
CW
case work
circulating water
cold worked
column waste
cooling water
CWA
Clean Water Act
CWB
chilled water building
CWIP
construction work in progress
CWO
capital work order
CWP
contractor work plan
control withdrawal prohibit
CWPC
calcined waste packaging cell
CWPH
circulating water pump house
CWR
cooling water return
CWS
circulating water system
compressed work schedule
cooling water system
CX
column extractant
criticality experiment
CY
calendar year
CYAP
Connecticut Yankee Atomic Power Co.
CYAPCO
Connecticut Yankee Atomic Power Co.

D

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DA
deaerator
dose assessment
DAC
discretionary access control
distance amplitude correction
DAE
Department of Atomic Energy (India)
DAEC
Duane Arnold Energy Center
DAF
dynamic amplification factor
DANATOM
Danish Association for Industrial Development of Atomic Energy
DAR
design assessment report
DAS
data acquisition system
disturbance analysis system
DASHO
Designated Agency Safety and Health Official
DAT
disconnect actuating tool
DatF
Deutsches Atomforum e.V. (Germany)
DAVDS
data acquisition and visual display system
DAW
dry active waste
DAYP
Dairyland Power Cooperative
DB
dry bulb
DBA
design-basis accident
DBD
design-basis document
design-basis documentation
DBDA
design-basis depressurization accident
DBE
design-basis earthquake
design-basis event
DBF
design-basis fault
dominant bubble frequency
DBFA
design-basis fuel assembly
DBFB
deep-bed filter and blower
DBFL
design-basis flooding level
DBI
design-basis incident
DBLOCA
design-basis loss-of-coolant accident
DBMS
database management system
DBNPS
Davis-Besse Nuclear Power Station
DBOA
delayed breeder or alternative
DBP
dibutyl phosphate
DBPB
design-basis pipe break
DBR
design-basis reconstitution
DBT
design-basis tornado
DBTT
ductile-to-brittle transition temperature
DBVP
design baseline and verification program
DC
data control
design contractor
document control
drain channel
dc
direct current
DCA
design change and authorization
Dosimeter Corporation of America
drain channel A
DCAA
Defense Contract Audit Agency
DCB
drain channel B
DCC
damaged core coolability
Daniels Construction Company
degraded core coolability
DCCA
Data Computer Corporation of America
DCD
design control document
document control desk
DCF
dose conversion factor
DCFO
Deputy Chief Financial Officer
DCH
direct containment heating
drain collection header
DCIP
design change improvement program
DCIR
daily Cadweld inspection report
DCM
Delaware Custom Material
DCN
design change notice
document change notice
DCNPP
Diablo Canyon Nuclear Power Plant
DCP
design change package
document control procedure
Donald C. Cook Plant
DCPD
direct current potential drop
DCR
defueling completion report
design change request
direct conversion reactor
DCRDR
detailed control room design review
DCRN
dashpot cup retention nut
DCS
document control system
DCSP
dry cask storage project
DCSS
dry cask storage system
DCT
differential current transformer
DCV
directional control valve
DCX
direct current experiment
DD
deputy director
Director's Decision
D-D
deuterium-deuterium
D&D
decontamination and decommissioning
defueling and decommissioning
DDD
direct distance dialing
DDH&DS
digital data handling and display system
DDL
detergent and decontamination liquid [system]
DDNB
delayed departure from nucleate boiling
DDR
deficiency and disposition report
DDS
digital data service
DDT
deflagration to detonation
design data transmittal
DDTT
drag disc-turbine transducer
DE
diagnostic evaluation
Detroit Edison Co.
dose equivalent
double ended
DEA
driver evaluation assembly
Drug Enforcement Administration
DEB
double-ended break
DEC
Digital Equipment Corporation
DECL
double-ended cold leg
DECLG
double-ended cold-leg guillotine
DECO
Detroit Edison Co.
DECON
decontamination and dismantlement
DEDE
Deputy Executive Director for Regulatory Effectiveness (NRC)
DEDM
Deputy Executive Director for Management Services NRC
DEDR
Deputy Executive Director for Regulatory Programs (NRC)
DEFAS
diverse emergency feedwater actuation system
DEG
double-ended guillotine
DEGB
double-ended guillotine break
DEH
digital electrohydraulic
DEHL
double-ended hot leg
DEHLG
double-ended hot-leg guillotine
DEI
dielectric and electrical insulation
dose equivalent iodine
DEIS
draft environmental impact statement
DEMA
Diesel Engine Manufacturers Association
DEP
design external pressure
diagnostic evaluation plan
diagnostic evaluation program (NRC)
DEPS
double-ended pump suction
DEPSG
double-ended pump suction guillotine
DER
Department of Environmental Research
Department of Environmental Resources
design electrical rating
Deviation Event Report
double-ended rupture
DERE
Dounreay Experimental Reactor Establishment (Scotland)
DERM
disassembly examination reassembly machine
DES
data encryption standard
Department of Emergency Services
double-ended slot
draft environmental statement
DESL
double-ended suction leg
DESLS
double-ended suction leg slot
DET
decomposition event tree
diagnostic evaluation team
DEW
Deutsche Edelstahlwerke, A.G. (Germany)
DF
debris formation
decontamination factor
D&F
determination and findings
dF
dilution factor (also Fd)
DF
dilution factor
dose factor
Df
dose factor
DFA
driver fuel assembly
dummy fuel assembly
DFBN
debris-filter bottom nozzle
DFC
design field change
DFCS
digital feedwater control system
DFFR
dynamic forcing function report
DFI
demand for information
DFO
designated Federal official
DFOS
diesel fuel oil system
DFP
decommissioning funding plan
diesel fire pump
DFR
damaged fuel relocation
Dounreay Fast Reactor (Scotland)
DFRP
downcomer flow resistance plate
DFT
dry film thickness
DG
diesel-engine generator
diesel generator
D/G
diesel generator
DGA
dummy guide assembly
DGAS
diesel generator auxiliary system
DGB
diesel generator building
DGCAIES
diesel generator combustion air intake and exhaust system
DGCWS
diesel generator cooling water system
DGEA
draft generic environmental assessment
DGFOSTS
diesel generator fuel oil storage and transfer system
DGLS
diesel generator lubrication system
DGSS
diesel generator starting system
DGZ
desired ground zero
DH
decay heat
DHHS
Department of Health and Human Services
DHI
department head instruction
DHP
department head procedure
DHR
decay heat removal
DHRS
decay heat removal system
direct heat removal service
direct heat removal system
DHS
decontamination hot shop
DHX
dump heat exchanger
DHXCS
dump heat exchanger control system
DID
defense in depth
DIE
direct inspection effort
DIMPLE
Deuterium Moderated Pile Low Energy Reactor
DIP
design internal pressure
DIPS
dynamic isotope power system
DIV
drywell isolation valve
DL
dead load
Duquesne Light Co.
DLAT
discharge-line air temperature
DLF
dynamic load factor
DLL
discharge-line length
DLRWS
dirty liquid radioactive waste system
DLV
discharge-line volume
DLWL
discharge-line water-leg length
DM
damage monitor
demineralized
DMA
direct memory access
DMPL
Delmarva Power and Light Co.
DMS
data management subsystem
Defense Message Service
DMT
dispersive mechanism test
DMTR
Dounreay Materials Testing Reactor (Scotland)
DMUX
distributed multiplex
DMW
demineralized makeup water
DN
delayed neutron
discrepancy notice
DNA
Defense Nuclear Agency
deoxyribonucleic acid
does not apply
DNB
departure from nucleate boiling
DNBR
departure from nucleate boiling ratio
DNFSB
Defense Nuclear Facility Safety Board
DNM
delayed neutron monitor
DNMS
delayed neutron monitoring subsystem
DNPS
Dresden Nuclear Power Station
DNRC
Democritos Nuclear Research Center (Greece)
DNS
domain name server
DNT
dinitrotoluene
DO
designated official
digital output
dissolved oxygen
duty officer
DOCUMENT
Department of Commerce
dissolver off-gas condensate
DOD
Department of Defense
DOE
Department of Energy
DOG
dissolver off-gas
DOI
Department of the Interior
DOL
Department of Labor
DOJ
Department of Justice
DOP
detailed operating procedure
dioctyl phosphate
disaster operations plan
di-sec, octyl phthalate
DORF
Diamond Ordnance Radiation Facility
DOS
degree of sensitization
Department of State
disk operating system
DOSAR
Dosimetry Applications Research Facility
DOT
Department of Transportation
DP
data processing
differential pressure
D/P
differential pressure
DPA
delegation of procurement authority
DPC
Dairyland Power Cooperative
Duke Power Co.
DPD
decontamination as precursor to decommissioning
DPE
development project engineer
discipline project engineer
DPIS
differential pressure indicating switch
DPIV
drywell purge isolation valve
DPLC
Dayton Power and Light Co.
dpm
decade per minute
disintegrations per minute
DPMM
dewpoint moisture monitor
DPO
differing professional opinion
DPP
drip pan pot
DPR
developmental power reactor
demonstration power reactor
DPRK
Democratic People's Republic of Korea
DPS
demand position system
DPV
differing professional view
DR
design review
designated representative
Danish Reactor
deficiency report
discrepancy report
DRA
dropped rod accident
DRC
dropped rod control
D/RE
disassembly/reassembly equipment
DRES
direct reading emission spectrograph
DRF
dose reduction factor
DRMW
demineralized reactor makeup water
DRP
disaster recovery plan
discrete radioactive particle
DRPI
digital rod position indication
digital rod position indicator
DRPIS
digital rod position indication system
DR/QR
design review/quality revalidation
DRR
document release record
DRS
development requirements specification
disassembly/reassembly station
DRW
dirty radwaste
DS
decontamination shop
design standard
D/S
dynamic/static
DSA
diagnostic self-assessment
DSAR
defueled safety analysis report
DSC
design safety criterion/criteria
dry shielded canister
dry storage canister
DSE
draft safety evaluation
DSER
draft safety evaluation report
DSI
direction-setting issue
DSIR
Department of Scientific and Industrial Research (United Kingdom)
DSL
drawing and specification listing
DSM
defect-specific management
DSO
designated senior official
director of site operations
D-T
deuterium-tritium
DTA
differential thermal analysis/analyses
DTER
draft technical evaluation report
DTI
diagnostic team inspection
DTNSRDC
David Taylor Naval Ship Research and Development Center
DTPA
diethylenetriamine pentaacetic acid
DTR
document transmittal record
DTRF
data transmittal and routing form
DTRS
development test requirement specification
DTS
differential temperature switch
DTT
design thermal transient
design transition temperature
DTV
direct torus vent
DUEGG
dual-energy gamma group
DUN
Douglas United Nuclear
DUNC
deep underwater nuclear counting
DuP-SR
E.I. DuPont de Nemours and Company--Savannah River
DUTS
decision unit tracking system
DVAL
degraded voltage analytical limits
DVM
digital voltmeter
DW
deadweight
demineralized water
drywell
DWCS
defueling water cleanup system
DWEDS
drywell equipment drain sump
DWFDS
drywell floor drain sump
DWG
drawing
DWICA
deep-water isotopic current analyzer
DWK
Deutsche Gesellschaft für Wiederaufarbeitung von Kernbrennstoffen, m.b.H. (Germany)
DWL
depressed water leg
drywell
DWMS
demineralized water makeup system
DWOC
Don't Waste Oregon Council
DWP
detailed work plan
DWR
Department of Waste Resources
DWS
demineralized water system
development work statement
DWST
demineralized water storage tank
DWT
drop weight test
DYNAL
dynamic analysis/analyses

E

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EA
enforcement action
engineering assurance
environmental assessment
E/A
element and attribute
erratum/errata and addendum/addenda
E&A
erratum/errata and addendum/addenda
EAB
exclusion area boundary
EAC
emergency assessment coordinator
EACC
Environmental Assessment Command Center
EACRP
European-American Committee on Reactor Physics
EACT
emergency action and coordination team
EAES
European Atomic Energy Society
EAG
emergency action guidelines
EAL
emergency action level
equipment air lock
EAP
emergency action plan
Event Assessment Panel
experimental activity proposal
EAPS
essential auxiliary power system
EAR
event analysis report
EAS
essential auxiliary support
experiment assurance system
EASE
elastic analysis for structural engineering
EASI
estimate of adversary sequence interruption
EAST
Eastern Utilities Associates
EATL
energy-absorbing torque limiter
EATS
Enforcement Action Tracking System
EB
electron beam
EBASCO
Electric Bond and Share Company
EBASCO Services Inc.
EBOR
experimental beryllium oxide reactor
EBR
experimental breeder reactor
EBS
emergency barrier system
Emergency Broadcast System
EBTF
ECC (emergency core cooling) bypass test facility
EBWR
experimental boiling-water reactor
EC
eddy current
emergency coordinator
enforcement coordinator
European Communities
event category
ECA
energy-conversion area
engineering change authorization
ECAR
East Central Area Reliability Coordination Agreement
ECC
emergency control center
emergency core coolant
emergency core cooling
ECCS
emergency core cooling system
ECCW
emergency core cooling water (system)
ECD
electron capture device
ECF
emergency cooling function
ECFM
eddy current flowmeter
ECI
emergency coolant injection
essential controls and instrumentation
ECN
Energieonderzoek Centrum Nederland (Netherlands)
engineering change notice
ECNG
East Central Nuclear Group, Inc.
ECNP
Environmental Coalition on Nuclear Power
ECP
emergency cooling pond
employee concerns program
engineering change proposal
estimated critical position
E&CQA
engineering and construction quality assurance
ECR
emergency coolant recirculation
estimate change request
ECS
emergency control station
environmental control shroud
environmental control system
ECSP
employee concerns special program
ECST
emergency condensate storage tank
ECT
eddy current test
emergency cooling tower
ECTG
employee concerns task group
ECTS
electronic custom telephone set
electronic custom telephone system
ECU
environmental control unit
ECW
emergency cooling water
essential chilled water
ECWP
emergency cooling water pond
ECWPH
emergency cooling water pump house
ED
electron device
exhaust damper
EDAX
energy dispersive x-ray analysis/analyses
EDC
emergency decontamination center
ED&C
electrical distribution and control
EDCN
engineering drawing change notice
EDCP
emergency design change package
E&DCR
engineering and design coordination report
EDECWS
emergency diesel engine cooling water system
EDELS
emergency diesel engine lubrication system
EDESS
emergency diesel engine starting system
EdF
Electricité de France (France)
EDG
emergency diesel generator
ED/G
emergency diesel generator
EDGCAIES
emergency diesel generator combustion air intake and exhaust system
EDM
electric discharge machining
electrical disintegration machining
EDN
engineering discrepancy notice
EDO
Executive Director for Operations (NRC)
EDP
electronic data processing
EDRO
Executive Director of Regional Operations, Office of (U.S. Food and Drug Administration)
EDS
electrical distribution system
experimental data system
explosives detection system
EDSFI
electrical distribution system functional inspection
EDT
energy dissipation test
equipment drain tank
explosives detector team
EDTA
ethylenedinitrilo tetraacetic acid
EDTS
equipment drain treatment system
EEC
end-of-equilibrium cycle
European Economic Community
EECW
emergency equipment cooling water
EEI
Edison Electric Institute
EEM
extrapolated endpoint method
EEPVS
electrical equipment protection ventilation system
EEQML
electrical equipment qualification master list
EEQSP
environmental equipment qualification summary package
EER
engineering evaluation request
EERF
Eastern Environmental Radiation Facility
EES
economizer-evaporator superheater
emergency exhaust system
EESWS
emergency equipment service water system
EFAPP
Enrico Fermi Atomic Power Plant
EFAS
emergency feedwater actuation signal
emergency feedwater actuation system
EFCO
Engineers and Fabricators Company
EFCV
excess flow check valve
EFD
engineering flow diagram
EFDS
equipment and floor drainage system
EFFBR
Enrico Fermi Fast Breeder Reactor
EFI
Enrico Fermi Institute
EFIC
emergency feedwater initiation and control
EFM
expected flow measurement
EFNS
Educational Foundation for Nuclear Science
EFO
equipment forced outage (NRC performance indicator)
EFOIA
Electronic Freedom of Information Act
EFP
electric fire pump
Enrico Fermi Atomic Power Plant
EFPD
effective full-power day
equivalent full-power day
EFPH
effective full-power hour
EFPM
effective full-power month
EFPY
effective full-power year
EFS
emergency feedwater system
EFT
emergency filter treatment
emergency filter train
EFW
emergency feedwater
EFWS
emergency feedwater system
EFWST
emergency feedwater storage tank
EG
emergency generator
EGCR
experimental gas-cooled reactor
EGDN
ethylene glycol dinitrate
EG&G
Edgerton, Germeshausen & Grier
EGM
enforcement guide memorandum/memoranda
EGTS
emergency gas treatment system
EH
electrohydraulic
EHC
electrohydraulic control
EHNP
Edwin I. Hatch Nuclear Plant
EHR
emergency heat removal
EHV
extra high voltage
EI
emergency injection
engineering instruction
E&I
electrical and instrumentation
EIA
Energy Information Administration
environmental impact appraisal
EIAP
environmental impact assessment project
EICC
emergency information and coordination center
EIIS
energy industry identification system
EIP
emergency implementation procedure
EIR
Eidgenossisches Institute für Reaktorforschung (Switzerland)
engineering information request
equipment inoperable record
EIS
effluent inventory system
electrical and instrument shop
electrical isolation scheme
emergency injection system
environmental impact statement
environmental information system
EJ
environmental justice
EKG
effective kilogram
EKMS
Electronic Key Management System
EL
Elettronucleare Italiana (Italy)
ELMS
electrical load monitoring system
ELP
Employees Legal Project
ELPHR
experimental low-temperature process heat reactor
ELR
effectiveness limiting risk
ELS
error-likely situation
ELU
emergency lighting unit
EM
electromagnetic
elevation model
engineering management
environmental management
evaluation model
E/M
electromechanical
E-MAD
engineering, maintenance, assembly, disassembly
EMB
engineering in medicine and biology
EMC
electromagnetic capability
electromagnetic compatibility
emergency management coordinator
engineering mockup critical experiment
EMI
electromagnetic interference
engineering and manufacturing instruction
EMO
electric motor operated
EMOV
electromagnetically operated valve
EMP
electromagnetic pulse
EMR
electromagnetic radiation
EMRV
electromagnetic relief valve
EMS
earthquake monitoring system
emergency management system
Emergency Medical Services
EMT
electrical metallic tubing
emergency management team
executive management team
EN
enforcement notification
event notification
ENC
Exxon Nuclear Company, Inc.
ENDESA
Empresa Nacional de Electricidad, S.A. (Chile)
ENEA
European Nuclear Energy Association
ENEL
Ente Nazionale per l'Energia Elettrica (Italy)
ENERGOATOM
Nuclear Power Utility (Ukraine)
ENI
Electro-Navale et Industrielle, S.A. (Belgium)
ENO
extraordinary nuclear occurrence
ENPI
Ente Nazionale Prevenzione Infortuni (Italy)
ENRESA
Empresa Nacional de Residnos Radiativos (Spain)
ENS
emergency notification system
European Nuclear Society
ENSA
Equipos Nucleares (Spain)
ENSI
Energia Nucleare Sud Italia (Italy)
ENUSA
Empresa Nacional del Uranio, S.A. (Spain)
Energie Nucléaire, S.A. (Switzerland)
EO
emergency officer
enforcement officer
equipment operator
E.O.
Executive Order
EOC
emergency operations center
end of cycle
EOCR
experimental organic-cooled reactor
EOC-RPT
end-of-cycle recirculation pump trip
EOD
explosives ordnance disposal
EOEC
end-of-equilibrium cycle
EOF
emergency operations facility
EOI
emergency operating instruction
Entergy Operations, Inc.
EOL
end of life
EOP
emergency operating plan
emergency operating procedure
EOS
equation of state
EOY
end of year
EP
electric power
emergency plan
emergency planning
emergency power
emergency preparedness
emergency procedure
equipment piece
E/P
electrical to pneumatic
EPA
electrical penetration assembly
engineering plant analyzer
Environmental Protection Agency
EP Act
Energy Policy Act of 1992
EPB
emergency planning basis/bases
EPBE
emergency-planning-basis event
EPC
emergency preparedness coordinator
engineering planning coordinator
EPDC
Electric Power Development Co. Ltd. (Japan)
EPDM
ethylene propylene diene monomer
EPE
emergency plan evolution
emergency preparedness evaluation
EPEC
El Paso Electric Co.
EPFE
electrical penetration filter and exhaust
EPG
emergency procedure guideline
EPI
Environmental Policy Institute
EPIA
emergency preparedness implementation appraisal
EPIP
emergency plan implementing procedure
EPIX
Equipment Performance and Information and Exchange System (replaces NPRDS) (INPO)
EPL
environmental protection limit
EPM
electrical power monitoring
end path manual
engineering project manager
engineering procedure memorandum/memoranda
environmental project manager
EPP
engineering program plan
environmental protection plan
EPR
electromechanical potentiokinetic reactivation
emergency planning requirements
emergency planning review
enhanced participatory rulemaking
essential performance requirement
EPRG
emergency planning review guideline
EPRI
Electric Power Research Institute
EPROM
electronic programmable read-only memory
EPRTCS
emergency power ride-through capability system
EPS
electric power system
emergency power system
EPSL
emergency power switching logic
EPSS
emergency power sequencing subsystem
EPT
ethylene-propylene terpolymer
EPZ
emergency planning zone
EQ
environmental qualification
environmentally qualified
equipment qualification
EQC
equipment qualification coordinator
EQD
environmental qualification document
EQDB
equipment qualification database
EQDF
equipment qualification data file
EQDP
environmental qualification data package
EQEDC
equipment qualification environmental design criterion/criteria
EQML
equipment qualification master list
EQ-TAP
environmental qualification-task action plan
equipment qualification-task action plan
ER
emergency response
environmental report
ERA
Economic Regulatory Administration
Energy Research Abstracts
Energy Reorganization Act
ERB
Executive Resources Board
experiment review board
ERBS
emergency radio broadcast system
ERC
emergency relocation center
emergency response coordinator
Engineering Research Council
ERCOT
Electric Reliability Council of Texas
ERCW
emergency raw cooling water
essential raw cooling water
ERCWS
emergency raw cooling water system
ERDA
Energy Research and Development Administration
ERDAM
Energy Research and Development Administration Manual
ERDS
Emergency Response Data System (NRC)
ERF
emergency response facility
entrainment release factor
explosion release factor
ERFBS
electrical raceway fire barrier system
ERFDADS
emergency response facility data acquisition and display system
ERFIS
emergency response facility information system
ERG
emergency response guideline
ERIE
emergency resources identification equipment
ERIS
emergency response information system
ERL
emergency reference level
ERO
engineering release order
EROD
executive resources and organizational development
EROS
earth resources observation system
electric radiological occurrence system
ERP
elevated release point
emergency response procedure
ERPA
emergency response planning area
ERR
Elk River Reactor
ERS
Economic Research Service
ERSP
earth resources survey program
ERT
emergency repair team
emergency response team
employee response team
event response team
ERTS
environmental radiological technical specification
environmental resources technology satellite
ERV
emergency relief valve
ERVC
external reactor vessel cooling
ES
engineered safeguards
examination standard
extraction steam
E/S
electrical supply
ESADA
Empire States Atomic Development Associates
ESAS
emergency safeguards actuation system
engineered safeguards actuation system
ESCA
extended source calibration area
ESCO
Electrical Steel Company
ESCOM
Electricity Supply Commission (South Africa)
ESCP
employee safety concerns program
ESCWS
essential services cooling water system
ESD
extension shaft disconnect
ESDR
engineered safeguards design rating
ESEERC
Empire State Electric Energy Research Corporation
ESF
engineered safety feature
exploratory shaft facility
Exploratory Studies Facility
ESFA
engineered safety feature actuation
ESFAS
engineered safety features actuation system
ESFS
engineered safety feature system
ESFVS
engineered safety feature ventilation system
ESO
emergency support organization
Engineering Service Organization
ESP
earth-surface potential
ESQ
equipment seismic qualification
ESR
early site review
electron spin resonance
experimental superheat reactor
ESRG
Energy Systems Research Group
ESRP
environmental standard review plan
ESRR
early site review report
ESS
electronic switching system
engagement simulation system
evaporation/solidification system
ES&S
engineering services and safety
ESSA
Environmental Science Services Administration
ESSAR
early site safety analysis report
EBASCO Standard Safety Analysis Report
ESSE
EBASCO Site Support Engineering
ESSP
earliest scram set point
ESW
electroslag welding
emergency service water
essential service water
ESWD
emergency service water discharge
ESWI
emergency service water intake
ESWS
emergency service water screening
emergency service water system
essential service water system
ESWSS
emergency service water supply system
ET
emergency tank
executive team
ETA
equipment transfer aisle
estimated time of arrival
ETBS
elevated tubesheet and baffle sleeve
ETC
estimated time of completion
ETE
evacuation time estimate
ETEC
Energy Technology Engineering Center
ETF
extended task force
ETG
electrical test group
ETL
environmental team leader
ETP
equivalent top product
ETQAP
education and training in quality assurance practices
ETR
engineering test reactor
ETS
elevated tubesheet sleeve
Emergency Telecommunications System
environmental technical specification
events tracking system
E&TT
engineering and technical training
EUB
emergency utility building
EURATOM
European Atomic Energy Community
EV
evaporator vessel
exhaust valve
EVA
early valve actuation
EVCC
ex-vessel core catcher
EVESR
ESADA (Empire States Atomic Development Associates) Vallecitos Experimental Superheat Reactor
EVFM
ex-vessel flux monitor
EVHM
ex-vessel handling machine
EVS
emergency ventilation system
EVST
ex-vessel storage tank
EVTM
external vessel transfer machine
ex-vessel transfer machine
EWEB
Eugene Water and Electricity Board
EWG
exempt wholesale generator
EWST
elevated water storage tank
emergency water storage tank
EXSIS
executive shared information system
EZB
exclusion zone boundary

F

[ Previous | Next ]

FA
forced air
fuel assembly
full arc
F/A
fuel assembly
FAA
Federal Aviation Administration
fresh acid add
FaAA
Failure Analysis Associates
FAB
ISOfabrication isometric
FAC
final acceptance criterion/criteria
flow-accelerated corrosion
FACA
Federal Advisory Committee Act
FACNET
Federal Acquisition Computer Network
FAF
Forum Atomique Français (France)
FAI
fail as is
FAP
fatigue action plan
FAPIG
First Atomic Power Industry Group (Japan)
FAR
Federal Acquisition Regulation
Fontenay-aux-Roses Nuclear Research Center (France)
functional analysis report
FARA
Federal Acquisition Reform Act
FARET
fast reactor test assembly
FAS
Federation of American Scientists
FASA
Federal Acquisition Streamlining Act of 1994
FASAB
Federal Accounting Standards Advisory Board
FASB
Financial Accounting Standards Board
FAST
fuel aerosol simulation test
fuel assembly stability test
FATT
fracture appearance transition temperature
FAX
facsimile
FBACS
fuel building air cleanup system
FBC
fluidized bed combustion
FBFC
Société Franco-Belge de Fabrication de Combustible (France)
FBFS
fuel building filter system
FBI
Federal Bureau of Investigation
FBR
fast breeder reactor
FBRF
fast burst reactor facility
FBV
fuel building ventilation
FC
fail closed
fine control
flow controller
fuel cycle
FCA
field change authorization
FCAW
flux cored arc welding
FCD
fine control damper
full core discharge
functional control diagram
FCE
flexible critical experiment
FCG
fatigue crack growth
FCI
Fluid Controls Institute
fuel-coolant interaction
FCN
field change notice
FCO
funds certifying official
FCP
field change package
FCR
fast ceramic reactor
fast conversion ratio
field change request
FCS
Fort Calhoun Station
F&CS
feedwater and condensate system
FCTT
fuel cladding transient tester
FCU
fan coil unit
FCV
flow control valve
Fd
dilution factor (also dF)
F/D
filter/demineralizer
F&D
finding and determination
FDA
final design acceptance
final design analysis
final design approval
final design authorization
Food and Drug Administration
FDAA
Federal Disaster Assistance Administration
FDA-EDRO
Food and Drug Administration, Office of Executive Director of Regional Operations
FDB
Fahrenheit dry bulb
FDC
functional design criterion/criteria
FDDR
field deviation disposition request
FDG
fluid distribution grid
FDI
field disposition instruction
FDLP
Federal Depository Library Program (GPO)
FDM
frequency division multiplex
FDR
final design report
functional design requirement
FDS
final docketed special
fire detection system
floor drain system
FDSA
facility description and safety analysis/analyses
FDT
floor drain tank
FDTS
floor drain treatment system
FDW
feedwater
FE
flow element
FEA
Federal Energy Administration
front-end analysis/analyses
FECCSR
failure of emergency core cooling system recirculation
FEDAL
failed element detection and location
fuel element detection and location
FEDP
Federal Executive Development Program
FEF
foreign event file
fuel examination facility
fusion energy foundation
FEFP
fuel element failure propagation
FEFPL
fuel element failure propagation loop
FEGLI
Federal Employees' Group Life Insurance
FEIS
final environmental impact statement
full electrical isolation scheme
FELAP
finite element analysis program
FEMA
Federal Emergency Management Agency
FEO
facility emergency organization
FEP
facility emergency plan
FEPCA
Federal Employees Pay Comparability Act of 1990
FERC
Federal Energy Regulatory Commission
FERD
fuel element rupture detection
FERMILAB
Fermi National Accelerator Laboratory
FERP
fire emergency response plan
FERS
Federal Employees' Retirement System
FES
final environmental statement
FF
filter factor
fluorine facility
FFD
fitness for duty
FFE
Federal field exercise
FRERP (Federal Radiological Emergency Response Plan) field exercise
full field exercise
FFF
fuel failure fraction
FFI
full field investigation
FFLA
Family Friendly Leave Act
FFLS
failed fuel location subsystem
FFM
fuel failure mockup
FFP
fuel fabrication plant
FFR
folded flow reactor
FFRDC
Federally Funded Research and Development Center
FFTF
fast flux test facility
FFTFPO
Fast Flux Test Facility Project Office
FFWT
final feedwater temperature
FG
fission gas
FGAA
Federal Government Accountants Association
FGEL
Fitchburg Gas and Electric Light Co.
FGM
fission gas monitor
FGS
Fulton Generating Station
FHAR
fire hazards analysis report
FHAVS
fuel-handling area ventilation system
FHB
fuel-handling building
FHBVI
fuel-handling building ventilation isolation
FHBVS
fuel-handling building ventilation system
FHC
fuel-handling cell
FHE
fuel-handling equipment
FHES
fuel-handling equipment system
FHFP
full height, full pressure
FHIS
fuel-handling isolation signal
FHOB
fuel-handling operator booth
FHP
fuel-handling procedure
FHPC
fuel-handling and preparation cell
FH&RM
fuel-handling and radioactive maintenance
FHS
fuel-handling system
FHSR
final hazards safety report
final hazards summary report
FHT
feedwater holding tank
FHU
fuel-handling unit
FI
flow indicator
FIA
Factory Insurance Association
FIAS
flow indicator alarm switch
FIEN
Forum Italiano dell'Energia Nucleare (Italy)
FIFO
first in, first out
FIM
field inspection manual
FIMA
fission per initial heavy metal atom
FIN
financial identification number
FIP
Federal information processing
field inspection procedure
FIPS
Federal information processing standard
FIR
food irradiation reactor
FIRM
failure introspection in rotating machinery
FIRMR
Federal Information Resources Management Regulation
FIRR
Federal Institute for Reactor Research (Switzerland)
FIRS
field incident radio system
FISC
fuel inspection and sampling cell
FIST
full integral simulation test
FIT
flow indicator transmitter
FIV
flow-induced vibration
FIVE
fire-induced vulnerability evaluation
FJO
field job order
FLAME
flame acceleration measurement and experiment
FLD
fuel-loading data
FLECHT
full-length emergency cooling heat transfer
FLIP
floating index point
fuel lifetime improvement program
FLIT
free limiting internal truss
FLST
full-length source term
FLTS
full-length tubesheet sleeve
FM
Factory Mutual
fracture mechanics
frequency multiplier
FMCRD
fine motion control rod drive
FME
foreign material exclusion
FMEA
Factory Mutual Engineering Associates
failure modes and effects analysis/analyses
FMEF
fuels and materials examination facility
FMF
fuel-melt fraction
FMIT
fusion materials irradiation test
FMRC
Factory Mutual Research Corporation
FMS
flux monitoring system
FNB
Forum Nucléaire Belge (Belgium)
FNP
floating nuclear plant
FNR
Ford Nuclear Reactor
FO
fail open
FOA
forced oil and air
FOAKE
first-of-a-kind engineering
FOCI
foreign ownership, control, or influence
FOE
Friends of the Earth
FOGG
feed-only-good generator
FOIA
Freedom of Information Act
FOL
facility operating license
FONSI
finding of no significant impact
FONUBEL
Forum Nucléaire Belge (Belgium)
FOR
forced outage rate (NRC performance indicator)
FORATOM
Forum Atomique Européen
FORC
fluorinator off-gas recycle compressor
FOSAR
foreign object search and retrieval
FOTA
fuels open test assembly
FP
fire protection
fission product
full power
FPC
Federal Power Commission
Florida Power Corporation
fuel pool cooling
FPCC
fuel pool cooling and cleanup
FPCCS
fuel pool cooling and cleanup system
FPCSTL
fission product control screening test loop
FPD
full-power day
FPDD
final project design description
FPDI
food processing development irradiator
FPEB
fuel pool exhaust blower
FPFI
fire protection functional inspection
FPL
Florida Power & Light Co.
full performance level
FP&L
Florida Power & Light Co.
FPM
Federal Personnel Manual
FPMR
Federal property management regulation
FPO
Federal Preservation Officer
FPOL
full-power operating license
FPPH
fire protection pump house
FPPVS
fuel pool pump ventilation system
FPR
Federal procurement regulation
flexible plastic reactor
FPS
final policy statement
fire protection system
Fluor Power Services, Inc.
FPSL
fission product screening loop
FPT
feedwater pump turbine
fission product test
FP-TAP
Fire Protection--Task Action Plan
FPWT
fuel pool water treatment
FQC
field quality control
FR
Federal Register
FR
final rule
flow regulator
friction ratio
FRA
flow recorder and alarm
FRAB
fuel receiving air blower
FRAC
Federal Regional Assistance Committee
FRAF
fuel receiving air filter
FRAMATOME
Société Franco-Américaine de Constructions Atomiques (France)
FRAP
fuel rod analysis program
FRAP-S
fuel rod analysis program--steady-state
FRAP-T
fuel rod analysis program--transient
FRB
Forschungsreaktor Berlin (Germany)
FRC
Federal Radiation Council
Federal Records Center
Federal Response Center
Fire Research Center
flow recording controller
fractional relief capacity
Franklin Research Center
FRCS
flow recording controller switch
FRCTF
fast reactor core test facility
FRD
formerly restricted data
FRERP
Federal Radiological Emergency Response Plan
FRF
fuel reprocessing facility
FRMAC
Federal Radiological Monitoring and Assessment Center
FRMAP
Federal Radiological Monitoring and Assessment Plan
FRN
Federal Register notice
FRN
formal report number
FRP
Federal Response Plan
fuel reprocessing plant
FRPCC
Federal Radiological Preparedness Coordinating Committee
FRS
fast reactor safety
fixed radial shield
floor response spectrum/spectra
fuel receiving station
FRSF
fuel receiving and storage facility
FRTEF
fast reactor thermal engineering facility
FS
factor of safety
far side
finishing superheater
flow switch
FSAR
final safety analysis report
FSC
Federal supply classification
Federal supply code
FSCR
fuel storage control room
FSCS
fuel storage cable spread
FSEB
fuel storage exhaust blower
FSER
final safety evaluation report
FSF
fuel storage facility
FSI
fluid-structure interaction
FSN
Federal stock number
FSNM
formula quantity of strategic special nuclear material
FSP
fuel storage pool
FSPA
fuel storage personnel area
FSPB
fuel storage processing building
FSPPR
fast supercritical pressure power reactor
FSPVS
fuel storage pool ventilation system
FSR
fast source reactor
First Soviet Reactor
FS&R
filling, storage, and remelt
FS&RS
filling, storage, and remelt system
FSS
Federal Supply Service
fire suppression system
floor service station
FSSAR
final standard safety analysis report
FSTF
full-scale test facility
FSU
former Soviet Union
FSV
Fort St. Vrain
FSVNGS
Fort St. Vrain Nuclear Generating Station
FT
fault tree
flow transmitter
FTA
fault tree analysis/analyses
FTC
Federal Telecommunications Center
fuel temperature coefficient
fuel transfer canal
fuel transfer cask
FTE
FFTF (fast flux test facility) test engineering
fracture transition elastic
full-time equivalent
FTI
Framatome Technologies, Inc. (formerly Babcock & Wilcox)
FTL
full-term license
full-time license
FTM
functional test matrix
FTOL
full-term operating license
FTP
FFTF (fast flux test facility) test procedure
file transfer protocol
fracture transition plastic
fuel transfer pool
fuel transfer port
FTR
fast test reactor
Federal travel regulation
FTRC
Federal Telecommunications Records Center
FTRIA
flow and temperature removable instrument assembly
FTS
Federal Telecommunications Services
fuel transfer system
FT&SA
fuel transfer and storage assembly
FTTM
few-tube test model
FTTS
flow-through tube sampler
FTU
formazine turbidity unit
FUETAP
formed under elevated temperature and pressure
FUFO
fuel fusing option
FUSE
Floridians United for Safe Energy, Inc.
FUSRAP
formerly utilized sites remedial action program
FV
floor valve
Fussell Vesely
FVA
floor valve adapter
FVC
filtered vented containment
FVCS
filtered vented containment system
FW
feedwater
field weld
Foster Wheeler Corp.
FWB
Fahrenheit wet bulb
FWC
feedwater control
FWCI
feedwater coolant injection
FWCS
feedwater control system
FWEC
Foster Wheeler Energy Corp. (subsidiary of Foster Wheeler Corp.)
FWHM
full width half maximum
FWIV
feedwater isolation valve
FWLB
feedwater line break
FWLC
feedwater level control system
FWP
Federal Women's Program
FWPAC
Federal Women's Program Advisory Committee
FWPB
feedwater pipe break
FWPCA
Federal Water Pollution Control Act
FWRA
Federal Workforce Restructuring Act of 1994
FWRV
feedwater regulating valve
FWS
feedwater supply
feedwater system
F&WS
Fish and Wildlife Service
FWSDR
final working system design review
FWSH
fresh water supply header
FWST
fueling water storage tank
FY
fiscal year
FYP
five-year plan
FZS
Forschungszentrum Seibersdorf, G.m.b.H. (Austria)

G

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GA
gas analysis/analyses
General Atomics (before 1988, GA Technologies, Inc.)
grapple adapter
GAAA
Groupement pour les Activités Atomiques et Avancées (France)
GAE
general analytical evaluation
GAEC
Greek Atomic Energy Commission
GAHF
grapple adapter handling fixture
GALE
gaseous and liquid effluent
GALL
generic aging lessons learned
GAMAS
General Atomics material assay system
GAN
Gosatomnadzor (Russia)
GAO
General Accounting Office
GAP
Georgia Power Co.
Government Accountability Project
GAPCO
Georgia Power Company
GASSAR
General Atomics Standard Safety Analysis Report
Gilbert Associates Standard Safety Analysis Report
GATT
General Agreement on Tariffs and Trade
GBHC
Great Bay Holdings Corp.
GBPC
Great Bay Power Company
gBq
gigabecquerel
GBR
gas-cooled breeder reactor
GBRA
Gas-Cooled Breeder Reactor Association (Belgium)
GBSR
graphite-moderated boiling and superheating reactor
GC
gas chromatograph
GCB
gravity cutback
GCBR
gas-cooled breeder reactor
GCCA
generic compliance and communications activity
GCEP
gas centrifuge enrichment plant
GCFBR
gas-cooled fast breeder reactor
GCH
gas collection header
GCHWR
gas-cooled, heavy-water-moderated reactor
GCI
Generic Communications Index
GCL
gas-cooled loop
GCR
gas-cooled reactor
GCRA
Gas-Cooled Reactor Associates
GCRE
gas-cooled reactor experiment
GCS
glued cylindrical specimen
GCSS
graphite core support structure
GDC
general design criterion/criteria
GDP
gaseous diffusion plant
GDS
general declassification schedule
graphical display system
GDT
gas decay tank
GE
General Electric Co.
GEAP
General Electric Atomic Products
GEC
General Electric Co. (United Kingdom)
General Electrodynamics Corp.
GEIS
generic environmental impact statement
generic environmental impact study
GEM
graphical evaluation module
GENE
General Electric Nuclear Energy
GEN&SIS
Geographical, Environmental, and Siting Information System
GENTR
General Electric Nuclear Test Reactor
GERA
General Engineering Research and Applications (Belgium)
GERP
general employee retraining program
GERS
general equipment ruggedness spectrum/spectra
GES
generic environmental statement
GESMO
Generic Environmental Statement on Use of Mixed Oxide Fuel
GESSAR
General Electric Standard Safety Analysis Report
GESTAR
General Electric Standard Application for Reactor Fuel
GET
general employee training
GETAB
General Electric Thermal Analysis Basis
GETP
general employee training program
GETR
General Electric Test Reactor
GETSCO
General Electric Technical Services Co.
GFE
Government-furnished equipment
GFE&M
Government-furnished equipment and material
GFES
generic fundamentals examination section
GFFD
gross failed fuel detector
GFK
Gesellschaft für Kernforschung, m.b.H. (Germany)
GFP
Government-furnished property
GFY
Government fiscal year
GG
generator gas
GGA
Gulf General Atomic
GGNS
Grand Gulf Nuclear Station
GH
gate house
G&H
Gibbs & Hill, Inc.
GI
gastrointestinal
generic issue
GIBBSSAR
Gibbs and Hill, Inc., Standard Safety Analysis Report
GIC
geomagnetically induced current
GIDEP
Government-Industry Data Exchange Program
GIF
gamma irradiation facility
GIFT
gas-insulated flow tube
GIIN
Groupe Intersyndical de l'Industrie Nucléaire (France)
GILS
Government Information Locator Service
GIMCS
Generic Issue Management Control System
GIP
generic implementation procedure
GIS
geographic information system
geologic information system
GKM
Grosskraftwerk Mannheim, A.G. (Germany)
GKN
Gemeenschappelijke Kernenergiecentrale Nederland N.V. (Netherlands)
Gemeinschaftskernkraftwerk Neckar, G.m.b.H. (Germany)
GKT
Gemeinschaftskernkraftwerk Tullnerfeld, G.m.b.H. (Austria)
GKW
Gemeinschaftkraftwerk Weser, G.m.b.H. (Germany)
GL
generic letter
Government liaison
GLASS
germanium-lithium-argon scanning system
GLDB
General License Database
GLEEP
Graphite Low-Energy Experimental Pile (United Kingdom)
GLRP
Generic License Renewal Program
GLRWS
gaseous and liquid radioactive waste system
GM
Geiger-Müller (Mueller)
GMAW
gas metal arc weld/welding
GMPC
Green Mountain Power Corp.
GMRA
Government Management Reform Act of 1994
GMT
Greenwich mean time
GN
general notice
GNGS
Genoa Nuclear Generating Station
GNPP
R.E. Ginna Nuclear Power Plant
GNS
Gesellschaft für Nuklear-Service, m.b.H. (Germany)
GO-CO
Government owned/contractor operated
GOI
general operating instruction
GORX
graphite oxidation from reactor excursion
GOS
group operating service
GP
general purpose
generic project
GPA
Governmental and Public Affairs, Office of (NRC)
GPC
Georgia Power Company
GPCL
general purpose closed loop
GPE
general purpose evaporator
GPL
general purpose loop
GPO
Government Printing Office
GPO
FDLPGPO Federal Depository Library Program
GPP
general plant project
GPR
Groupe Permanent Chargé des Réacteurs Nucleaires
GPRA
Government Performance and Results Act of 1994
GPS
global positioning system
GPT
general plant telephone
GPU
General Public Utilities Corp.
GPUN
GPU (General Public Utilities) Nuclear Corp.
GPUSC
GPU (General Public Utilities) Service Corp.
GQA
graded quality assurance
GRC
generation review committee
GRI
Gas Research Institute
GRR
Greek Research Reactor
GRS
gaseous radwaste system
geoscience and remote sensing
Gesellschaft für Alagen-und Reaktorsicherheit, m.b.H. (Germany)
GRSA
General Radioquimica, S.A. (Spain)
GRT
general reactor technology
GRWS
gaseous radioactive waste system
GS
gland seal
GSA
General Services Administration
GSB
general services building
GSC
gland seal condenser
gland steam condenser
Global Strategy Council
GSD
generating significant dose
GSER
generic safety evaluation report
GSH
gas surge header
GSI
generic safety issue
GSLO
gland seal leakoff
GSPS
generating station protection system
GSR
gland steam regulator
GST
gas surge tank
GSU
generator stepup
Gulf States Utilities Co.
GTA
gas tungsten arc
guide tube assembly
GTAW
gas tungsten arc weld
GTCC
greater than Class C
GTG
gas turbine generator
GT-HTGR
gas-turbine high-temperature gas-cooled reactor
GTIG
Gamma Thermometer Interest Group
GTL
gaseous tritium light
GTLS
gaseous tritium light source
GTR
ground test reactor
GTRR
Georgia Technology Research Reactor
GTTF
gas-turbine test facility
GUI
graphical user interface
GUNFCO
Gulf United Nuclear Fuels Corporation
GV
guard vessel
GVR
gas volume ratio
GVW
gross vehicle weight
GWAC
Government-wide agency contract
GWD
gaseous waste disposal
GWMS
gaseous waste management system
gas-water module storage
GWPS
gaseous waste processing system
GWS
gaseous waste system
GWTT
ground-water travel time
Gy
gray

H

[ Previous | Next ]

H/A
hand/automatic
HAA
head access area
HAAUP
hanger and analysis update program
HAC
high alumina cement
HACL
Harvard Air Cleaning Laboratory
HAD
heat-activated device
heat-actuated device
HAFM
helium accumulation fluence monitor
HAN
hydroxylamine nitrate
HAP
hafnium column product
HAPS
Houston automatic priority spooling
HAS
holding action system
HASL
Health and Safety Laboratory
HAW
high acid waste
HAX
hafnium column extractant
HAZ
heat-affected zone
HAZCAP
Hazard Communication Compliance Assistance Program (U.S. Occupational Safety and Health Administration)
HAZEL
Homogeneous Assembly Zero Energy Laboratory
HB
handbook
horizontal baffle
HBA
horizontal baffle assembly
HBP
hydrogen behavior program
HBPP
Humboldt Bay Power Plant
HBR2
H. B. Robinson Steam Electric Plant, Unit 2
HBS
hydrogen burn survivability
HBWR
Halden Boiling Heavy Water Reactor (Norway)
HCDA
hydrodynamic core-disruptive accident
hypothetical core-disruptive accident
HCDB
heat code database
HCE
human-caused error
HCGS
Hope Creek Generating Station
HCLF
horizontal cask lifting fixture
HCLPF
high confidence in low probability of failure
HCM
hydraulic core mockup
HCOG
Hydrogen Control Owners Group
HCS
hydrazine control system
hydrogen control system
HCSS
head compartment support structure
HCTL
heat capacity temperature level
HCU
hydraulic control unit
HCV
hand control valve
hydraulic control valve
HCW
hafnium column waste
HDGR
high-density gas reactor
HDO
Headquarters duty officer
HDR
Heissdampfreaktor (Germany)
high dose rate
hot dry rock
HDT
heated detonation tube
HDW
high-pressure demineralized water
HE
human error
HEARTHFIRE
high-energy accelerator reactor for thermonuclear fusion with ion beam of relativistic energy
HECTOR
Hot, Enriched, Carbon-Moderated, Thermal-Oscillator Reactor (United Kingdom)
HED
historical earthquake data
human engineering deficiency
human engineering discrepancy
HEDL
Hanford Engineering and Development Laboratory
HEHF
Hanford Environmental Health Foundation
HEI
Heat Exchanger Institute
HEJ
hybrid expansion joint
HELB
high-energy line break
HELBA
high-energy line break analysis/analyses
HELCO
Hartford Electric Light Co.
HELP
Health and Energy Learning Project
HEM
homogeneous equilibrium model
HEP
human-error probability
HEPA
high-efficiency particulate air
HEPB
high-energy pipe break
HER
human-error rate
HERALD
Heterogenous Experimental Reactor, Aldermaston (United Kingdom)
High Enriched Reactor, Aldermaston (United Kingdom)
HERMES
Heavy Element and Radioactive Material Electromagnetic Separator (United Kingdom)
HERO
Hazards of Electromagnetic Radiation to Ordnance Reactor (United Kingdom)
HES
Hanford Engineering Service
HET
horizontal electrical tunnel
HETS
height equivalent to a theoretical stage
HEU
highly enriched uranium
HEW
Hamburgische Electrizitäts-Werke, A.G. (Germany)
HEX
uranium hexafluoride
HFAR
hardware failure analysis report
HFBR
high-flux beam reactor
HFCE2
high-flux critical experiment2
HFE
human factors engineering
HFED
high-frequency envelope detection
HFEF
hot fuel examination facility
HFIR
high-flux isotope reactor
HFP
hot full power
HFPP
human factors program plan
HFR
high-flux reactor
HFRG
human factors review group
HFT
hot functional testing
HG
hydrogen gas
HGE
hydraulic grade elevation
HGMS
high gradient magnetic separator
HG/NG
hydrogen gas/nitrogen gas
HHLR
Horace Hardy Lestor Reactor
HHS
Health and Human Services, U.S. Department of
HHSI
high-head safety injection
HHW
high-heat waste
HI
Hydraulic Institute
H&I
harassment and intimidation
HIC
hand indicator controller
high-integrity container
HI-C
high conversion--critical
HI&D
harassment, intimidation, and discrimination
HID
high-impact design
high-intensity discharge
HIFAR
High-Flux Australian Reactor
HIFRENSA
Hispano-Francesa de Energía Nuclear, S.A. (Spain)
HIL
helium impurities loop
HILAC
heavy ion linear accelerator
HILC
high intermediate level cell
HIP
Hanford Isotopes Plant
HIPA
high-speed interactive plant analysis/analyses
HIPOW
hot isostatic pressing of waste
HIPS
hoist integrated protective system
HIR
hanger inspection report
HIRDL
High-Intensity Radiation Development Laboratory
HIS
hydrogen igniter system
hydrogen ignition system
HITC
Hydraulic Institute test code
HJTC
heated junction thermocouple
HKG
Hochtemperatur-Kernkraftwerk, G.m.b.H. (Germany)
HLB
hot laboratory building
HLC
high-level cell
HLCS
high-level compaction station
HLCV
hot-leg check valve
HLIV
hot-leg isolation valve
HLLWT
high-level liquid waste tank
HLNCC
high-level neutron coincidence counter
HLO
high-level override
HL&P
Houston Lighting & Power Co.
HLRW
high-level radioactive waste
HLSW
high-level solidified waste
HLW
high-level liquid waste
high-level radioactive waste
high-level waste
HLWC
high-level waste calcination
high-level waste concentrate
HLWD
high-level waste distillate
HLWF
high-level waste feed
HLWOG
high-level liquid waste off-gas
HLWR
high-level waste repository
HLWS
high-level waste surge
HM
heavy metal
HMS
Hanford Meteorology Survey
hydrogen mixing system
H&N
Holmes and Narver, Inc.
HNL
Holifield National Laboratory
HNNP
Haddam Neck Nuclear Plant
HNP
Haddam Neck Nuclear Plant
Hartsville Nuclear Plant
HNPF
Hallam Nuclear Power Facility
HO
hydraulic operator
HOG
head off-gas
HOO
headquarters operations officer
HOP
HEDL (Hanford Engineering Development Laboratory) overpower
HOTCE
hot critical experiment
HOV
hydraulic-operated valve
HP
Edwin I. Hatch Plant
hanger package
health physicist
health physics
high pressure
high purity
HPC
health physics center
hot pipe chase
HPCF
high-pressure core flooder
HPCI
high-pressure coolant injection
HPCIS
high-pressure coolant injection system
HPCS
high-pressure core spray
HPD
high-power density
HPED
Human Performance Event Database
HPES
human performance evaluation system
HPFL
high-performance fuels laboratory
HPFP
high-pressure fire protection
HPI
high-pressure injection
HPIP
Human Performance Investigation Process
HPIS
high-pressure injection system
HPME
high-pressure melt ejection
HPN
health physics network
HPOF
high-pressure oil fill
high pressure, oil filled
HPP
health physics program
hot processing plant
HPPP
Human Performance Program Plan
HPR
high-pressure recirculation
HPRR
health physics research reactor
HPRS
high-pressure recirculation system
HPS
Hanford Plant standard
Health Physics Society
health physics station
helium purification system
hydrogen purge system
HPSI
high-pressure safety injection
HPSIP
high-pressure safety injection pump
HPSP
high-power set point
HPSW
high-pressure service water
HPSWS
high-pressure service water system
HPT
high-pressure turbine
hot pipe tunnel
HPU
hydraulic power unit
HQ
Hydro-Quebec (Canada)
HR
hard rock
Human Resources, Office of (NRC)
hydrogen recombiner
HRA
Human Reliability Analysis
HRB
Hochtemperatur-Reaktorbau, G.m.b.H. (Germany)
HRE
homogeneous reactor experiment
HRIS
human resources information system
HRM
human resources management
HRP
Halden Reactor Project
HRPS
hydrogen recombination and purge system
HRRM
high-range radiation monitor
HRS
heat rejection system
HRT
homogeneous reactor test
HS
hand switch
hot shop
HSI
human system interface
HSO
hydrogen seal oil
HSP
hot-shutdown panel
HSST
heavy section steel technology
HSW
heat sink welding
HSWA
Hazardous and Solid Waste Amendments
HSWH
high solid waste header
HTB
hafnium test blade
HTFFT
heat transfer fluid flow thermodynamics
HTGCR
high-temperature gas-cooled reactor
HTGR
high-temperature gas-cooled reactor
high-temperature gas reactor
HTGR-CX
high-temperature gas reactor critical experiment
HTIS
heat transfer instrument system
HTL
heat transfer loop
HTLTR
high-temperature lattice test reactor
HTM
high trajectory missile
HTPC
Hayward Tyler Pump Company
HTR
Hanford Test Reactor
high-temperature reactor
Hitachi Training Reactor (Japan)
HTRDA
High-Temperature Reactor Development Associates
HTRE
heat transfer reactor experiment
HTRI
Heat Transfer Research Institute
HTS
heat transfer system
heat transport system
HTSF
high-temperature sodium facility
HTTP
hypertext transfer protocol
HTV
half thickness value
H/U
heatup
HU
hydraulic unit
HUGHES-NEL
Hughes Aircraft Company Nuclear Electronics Laboratory
HULP
Hudson Light and Power Dept.
HUT
HEDL (Hanford Engineering Development Laboratory) up transient
holdup tank
HV
hand valve
H&V
heating and ventilation
HVAC
heating, ventilation, and air conditioning
HVD
heaters, vents, and drains
Hvdc
high-voltage direct current
HVH
hydrogen vent header
HVSU
heating and ventilating supply unit
HW
heavy water
hot water
hotwell
HWC
hydrogen water chemistry
HWCTR
heavy-water components test reactor
HWGCR
heavy-water-moderated, gas-cooled reactor
HWH
hot water heating
HWLC
hotwell level control
HWLWCR
heavy-water-moderated, boiling light-water-cooled reactor
HWP
heavy-water plant
HWR
heavy-water reactor
hot water return
HWS
Hanford work specification
Hanford work standard
HWSF
hazardous waste storage facility
HWWVS
hardened wetwall vent system
HX
heat exchange
heat exchanger
HYPO
high-power water-boiler reactor
HZP
hot zero power

I

[ Previous | Next ]

IA
industry application
insertion approval
instrument air
I/A
isolation amplifier
I&A
identification and authentication
IAA
interim access authorization
IAC
interim acceptance criterion/criteria
IAD
immediate action directive
IAE
instrumentation and electrical
IAEA
International Atomic Energy Agency
IAEC
Israel Atomic Energy Commission
IAG
incident analysis group
IAL
immediate action letter
IALL
intermediate activity level liquid [system]
IANEC
Inter-American Nuclear Energy Commission
IAP
independent assessment program
integrated action plan
Iowa Power
IAPG
Interagency Advanced Power Group
IAPMO
International Association of Plumbing and Mechanical Officials
IAR
irradiation-anneal-reirradiation
IAS
instrument air system
IASCC
irradiation-assisted stress-corrosion cracking
IAT
information assessment team
IATI
integrated assessment team inspection
IAW
in accordance with
IB
inner bremsstrahlung
IBA
inner blanket assembly
intermediate break accident
IBEW
International Brotherhood of Electrical Workers
IBJ
Industrial Bank of Japan, Ltd.
Instytut Badán Jadrowych (Poland)
IBM
International Business Machines Corp.
IBSHR
integral boiling and superheat reactor
IC
indicating controller
Internuclear Co.
isolation condenser
I&C
instrumentation and control
ICA
item control area
ICAP
International Code Assessment Program
ICAR
interface control action request
ICAVP
independent corrective action verification program
ICB
information collection budget
interface control board
ICBWR
improved cycle boiling-water reactor
ICC
inadequate core cooling
information collection coordinator
Interstate Commerce Commission
ICCDP
incremental conditional core damage probability
ICCGR
international cyclic crack growth rate
ICCU
interchannel comparison unit
ICCW
in-containment chilled water
ICD
interface control diagram
interface control document
interface control drawing
ICE
implicit continuous-fluid Eulerian
ICEA
Insulated Cable Engineers Association
ICES
integrated civil engineering system
ICI
ice condenser instrumentation
in-core instrumentation
ICODS
Interagency Committee on Dam Safety
ICONS
Information Center on Nuclear Standards
ICP
inert carrier process
instrument calibration procedure
inventory control point
ICPP
Idaho Chemical Processing Plant
ICRA
Interagency Committee on Radiological Assistance
ICRI
incomplete control rod insertion
ICRP
International Commission on Radiological Protection
ICRS
instrument calibration and recall system
ICRU
International Commission on Radiation Units and Measurements
ICS
instrumentation and control system
integrated control system
intercommunication system
iodine cleanup system
ICSA
in-core shim assembly
ICSD
ionization chamber smoke detector
ICV
independent construction verification
ID
inner diameter
inside diameter
inventory difference
IDA
intrusion detection alarm
IDAS
intermediate dose assessment system
IDCA
independent design and construction assessment
IDCOR
Industry Degraded-Core Rulemaking Program
IDCV
independent design and construction verification
IDENTIFY
Instituto de Engenharia Nuclear (Brazil)
IDI
independent design inspection
integrated design inspection
IDLH
immediate danger to life and health
IDMS
isotope dilution mass spectrometry
IDNS
Illinois Department of Nuclear Safety
IDOT
Illinois Department of Transportation
IDP
Individual Development Plan (NRC Form 321)
IDR
independent design review
inspection discrepancy report
interface data report
IDS
interim decay storage
intermediate decay storage
isotope detection system
IDT
integrated design team
IDV
independent design verification
IDVP
independent design verification program
IE
industrial electronics
initiating event
Inspection and Enforcement, Office of (NRC)
irradiation effect
I&E
internally and externally
IEA
Instituto de Energia Atomica (Brazil)
International Energy Agency
IEAR
Instituto de Energia Atomica Reactor (Brazil)
IEB
IE (Office of Inspection and Enforcement) bulletin
IEC
International Electrotechnical Commission
IED
improvised explosive device
IEEE
Institute of Electrical and Electronics Engineers
IEG
items evaluation group
IELP
Iowa Electric Light & Power Co.
IEM
interim examination and maintenance
IEMTF
interim examination and maintenance training facility
IEN
IE (Office of Inspection and Enforcement) notice
IEOTSG
integral economizer once-through steam generator
IES
Illumination Engineering Society
Institute of Environmental Sciences
irradiation effects simulation
IESB
iron-enriched synthetic basalt
IET
initial engine test
IFA
instrument fuel assembly
IFB
invitation for bids
IFBA
integral fuel burnable absorber
IFCA
instrumentation to follow the course of an accident
IFCF
integrated fuel cycle facility
IFCI
integrated fuel-coolant interaction
IFE
Institut for Energiteknikk (Norway)
IFI
inspector followup item
IFM
intermediate flow mixing
IFMIS
integrated financial management information system
IFPT
integrated fission product transport
IFR
integral fast reactor
IFTS
irradiated fuel transfer station
irradiated fuel transfer system
IG
Inspector General
IGA
intergranular attack
IGCE
Independent Government Cost Estimate
IGLD
International Great Lakes Datum
IGRP
inert gas receiving and processing
IGR&P
inert gas receiving and processing
IGRPS
inert gas receiving and processing system
IGSCC
intergranular stress-corrosion cracking
IGT
instrument guide tube
IH
integrated head
IHSI
induction heating stress improvement
induction heat stress improvement
intermediate head safety injection
IHTS
intermediate heat transport system
IHX
intermediate heat exchanger
IHXGV
intermediate heat exchanger guard vessel
IIE
Instituto de Investigaciones Electricas (Mexico)
IIF
internals indexing fixture
IIGE
Iowa-Illinois Gas and Electric Co.
IIP
Incident Investigation Program
in-core instrument penetration
IIRC
Incident Investigation Review Committee
IIS
integrated implementation schedule
IIT
Illinois Institute of Technology
Incident Investigation Team
Indian Institute of Technology
IKRD
inverse kinetics rod drop
ILC
intermediate level cell
ILIP
in-line instrument package
ILLW
intermediate-level liquid waste
ILO
International Labour Organisation
ILPR
Illinois Power Co.
ILRT
integrated leak rate test
integrated leak rate testing
ILSW
intermediate-level solid waste
ILW
intermediate-level waste
ILWC
intermediate-level waste concentrate
ILWD
intermediate-level waste distillate
ILWF
intermediate-level waste feed
ILWS
intermediate-level waste storage
IM
information management
instrumentation and measurement
integrated master
IMA
independent management appraisal
IMAS
impurity monitoring and analysis system
IMC
incident management center
Inspection Manual chapter
IMCO
Inter-Government Maritime Consultative Organization
IMECo
Indiana & Michigan Electric Company
IMP
instrument maintenance procedure
IMPAC
International Merchant Authorization Card
IMPCo
Indiana Michigan Power Company
IMPEP
Integrated Material Performance Evaluation Program
IMPR
Indiana & Michigan Power Co.
IMS
in-core monitoring system
ion mobility spectrometer
IN
information notice
INB
Internationale Natrium-Brutreaktor-Bau, G.m.b.H. (Germany)
INC
Idaho Nuclear Corporation
INCA
in-core analysis/analyses
inner neutron control assembly
INCB
International Nuclear Credit Bank
INCOT
in-core test
IND
investigational exemption of a new drug
INDE
inservice nondestructive examination
INDEX
integrated nuclear data exchange
INEC
Idaho Nuclear Energy Commission
INEEL
Idaho National Engineering and Environmental Laboratory (formerly INEL)
INEL
Idaho National Engineering Laboratory (now INEEL)
INER
Institute of Nuclear Energy Research (Taiwan)
INES
international nuclear event scale
INFCE
International Nuclear Fuel Cycle Evaluation
ININ
Instituto Nacional de Investigaciones Nucleares (Mexico)
INIS
International Nuclear Information System
INITEC
Empresa Nacional de Ingeniería y Tecnología, S.A. (Spain)
INLA
International Nuclear Law Association
INMM
Institute of Nuclear Materials Management
INPO
Institute of Nuclear Power Operations
INR
immediate notification report
INS
Immigration and Naturalization Service
INSAG
International Nuclear Safety Advisory Group
INSRP
Interagency Nuclear Safety Review Panel
INTERATOM
Internationale Atomreaktorbau, G.m.b.H. (Germany)
INTLO
International Nuclear Technology Liaison Office
INX
ion exchange
I/O
input/output
IOAA
Independent Offices Appropriation Act of 1952
IOE
industry operating experience
IOERS
integrated operating experience reporting system
IORV
inadvertently opened relief valve
IOSRV
inadvertent opening of a safety/relief valve
IP
inspection procedure
I&P
inerting and preheating
IPA
Intergovernmental Personnel Act
iterative performance assessment
IPAC
International Participants Advisory Committee (Institute of Nuclear Power Operations)
IPAP
integrated performance assessment process
integrated performance assessment program
IPAS
Inspection Procedure Authority System
IPB
illustrated parts breakdown
IPC
Interjurisdictional Planning Committee
IPCEA
Insulated Power Cable Engineers Association
IPDD
initial project design description
IPE
individual plant examination
integrated plant evaluation
IPEEE
individual plant examination of external events
IPF
iodine protection factor
IPHT
in-process heat treatment
IPIRG
International Piping Integrity Research Group
IPL
initial program load
IPP
independent power producer
integrated plotting package
IPR
initial pressure regulator
IPRDS
in-plant reliability data system
IPRN
in-process rework notice
IPS
Indian Point Station
interim policy statement
investment protection subsystem
Iowa Public Service Company
iron pipe size
IPSAR
integrated plant safety assessment report
IPSN
Institute of Nuclear Safety and Protection (France)
IPTS
integrated pressurized thermal shock
IpyC
inner pyrolytic carbon
IR
information request
inspection report
intermediate range
IRA
integrated review of assessment
IRAC
Interdepartmental Radio Advisory Committee
IRACT
incident response action coordination team
IRAP
Interagency Radiological Assistance Plan
Interagency Radiological Assistance Program
IRB
inside reactor building
Istituto Ricerche Breda, SpA (Italy)
IRC
incident response center
Indiana Regional Cancer (Center)
internal review committee
IRE
Institut National des Radioéléments (Belgium)
IREP
integrated reliability evaluation program
interim reliability evaluation program
IRFM
integral reactor flow model
IRG
Interagency Review Group
IRM
information resources management
Information Resources Management, Office of (NRC)
intermediate-range monitor
IRMP
Independent Radiation Monitoring Program
IRN
item removal notice
IRP
incident response plan
intermediate rotating plug
IRPA
International Radiation Protection Association (France)
IRPI
individual rod position indicator
IRR
Institute for Reactor Research (Switzerland)
Israeli Research Reactor
IRRAS
integrated reliability and risk analysis system
IRS
Incident Reporting System
Inquiry and Reporting System
Institut für Reaktorsicherheit der Technischen Überwachungs-Vereine, e.V. (Germany)
iodine removal system
IRSF
interim radwaste storage facility
IRSP
inside recirculation spray pump
IRSR
Issue Resolution Status Report
IRTS
inspection report tracking system
IRVH
integrated reactor vessel head
IRWST
in-containment refueling water storage tank
IS
indicating switch
information system
ISA
independent safety analysis
independent safety assessment or analysis
Instrument Society of America
integrated safety assessment
ISAF
isotopic source adjustable fissometer
ISAM
indexed sequential access method
ISAP
integrated safety assessment program
ISAS
isotopic source assay system
ISCA
Intersociety Committee on Methods for Ambient Air Sampling
ISCORS
Interagency Steering Committee on Radiation Standards
ISCP
intermediate sodium characterization package
ISCT
important-to-safety-criteria task
inner seal collar tool
ISD
instructional system design
ISDF
intermediate sodium disposal facility
ISDN
integrated services digital network
ISE
ion-selective electrode
ISEG
independent safety engineering group
ISER
integral systems experimental requirement
ISFSF
independent spent fuel storage facility
ISFSI
independent spent fuel storage installation
ISG
integrated scheduling group
ISGMP
integrated scheduling group manual procedure
ISGTR
induced steam generator tube rupture
ISI
inservice inspection
ISIS
integrated safeguards information system
ISITS
integrated safety issues tracking system
ISLH
inservice leak and hydrostatic
ISLOCA
interfacing-systems loss-of-coolant accident
ISMES
Istituto Sperimentale Modelli e Strutture (Italy)
ISNF
intermediate-energy standard neutron field
ISO
independent system operation
independent system operator
International Standardization Organization
ISO/DWG
isometric drawing
ISOO
Information Security Oversight Office
ISP
industrial security plan
ISR
intermediate sodium removal
ISSO
Information System Security Officer
IST
inservice test
inservice testing
integral simulation test
integral systems test
ISTS
Improved Standard Technical Specifications
ISV
in situ verification
IT
information technology
information theory
instrument test
instrument tree
I&T
inspection and test
ITAAC
inspection, test, analysis, and acceptance criterion/criteria
ITAL
Instituut voor Toepassing van Atoomenergie in de Landbouw (Netherlands)
IT&AP
inspection test and analysis plan
ITC
Information Technology Council
isothermal temperature coefficient
ITDP
improved thermal design procedure
ITF
interstitial transfer facility
ITFTRIA
instrument tree flow and temperature removal instrument assembly
ITI
inspection/test instruction
ion track instrument
ITIP
Industry Technical Information Program
ITL
Industrial Testing Laboratories
ITM
in-core temperature monitor
information technology management
ITMA
irradiation test management activity
ITMRA
Information Technology Management Reform Act
ITMS
in-core temperature monitoring system
ITPOP
independent, third-party oversight program
ITR
instrument test rig
ITRI
Industrial Technology Research Institute (Taiwan)
ITRIA
instrument tree removable instrument assembly
ITS
Idaho Test Station
important to safety
improved technical specification
Information Technology Services
inventory tracking system
IT/SP
instrument tree/spool piece
ITV
intermediate test vessel
IUPAC
International Union of Pure and Applied Chemistry
IUPAP
International Union of Pure and Applied Physics
IV
independent verification
IVHM
in-vessel handling machine
IVHM-EM
in-vessel handling machine--engineering model
IVHX
in-vessel heat exchanger
IVIC
Instituto Venezolano de Investigaciones Cientificas (Venezuela)
IVO
Imatran Voima Osakeyhtio (Finland)
IVP
integrated verification plan
IVS
in-vessel storage
IVSM
in-vessel storage module
IVTM
in-vessel transfer machine
IWF
industrial waste filter
industrial waste filtration
IWFS
industrial waste filter system
industrial waste filtration system
IWGFR
International Working Group on Fast Breeder Reactors
IWRC
iron wire rope core
IWS/IT
integrated work sequence/inspection traveler
IWTS
industrial waste treatment system
IX
ion exchanger
IZ
isolation zone

J

[ Previous | Next ]

JABE
John A. Blume and Associates, Engineers
JAEC
Japan Atomic Energy Commission
JAEIP
Japan Atomic Energy Insurance Pool
JAERI
Japan Atomic Energy Research Institute
JAERO
Japan Atomic Energy Relations Organization
JAF
James A. FitzPatrick Nuclear Power Plant
JAFNPP
James A. FitzPatrick Nuclear Power Plant
JAIF
Japan Atomic Industrial Forum
JAJ
J.A. Jones Co.
JANAP
joint Army-Navy-Air Force publication
JAPC
Japan Atomic Power Co.
JARRP
Japan Association for Radiation Research on Polymers
JCAE
Joint Committee on Atomic Energy
JCCCNRS
Joint Coordinating Committee for Civilian Nuclear Reactor Safety
JCL
job control language
JCO
justification for continued operation
JCP
Joint Committee on Printing
JCPL
Jersey Central Power & Light Co.
JCP&L
Jersey Central Power & Light Co.
JEA
Jacksonville Electric Authority
JEEP
joint emergency evacuation plan
joint establishment experimental pile
JEN
Junta de Energía Nuclear (Spain)
JEPIC
Japan Electric Power Information Center
JET
joint European torus
JETR
Japan Engineering Test Reactor
JFNP
Joseph M. Farley Nuclear Plant
JFNPP
James A. FitzPatrick Nuclear Power Plant
JGC
Japan Gasoline Co., Ltd.
JGCR
Japan Gas-Cooled Reactor
JHEP
joint human error probability
JINR
Joint Institute for Nuclear Research
JIO
justification for interim operation
JOFOC
justification for other than full and open competition
JOG
Joint Owners Group
JPDR
Japan Power Demonstration Reactor
JPM
job performance measure
JRR
Japanese Research Reactor
JSW
Japan Steel Works, Ltd.
JTA
job task analysis/analyses
JTG
Joint Test Group
JUMA
Joint Utility Management Assessment Group
JURIS
justice retrieval and inquiry system

K

[ Previous | Next ]

K/A
knowledge and abilities
KAEA
Kazakh Atomic Energy Agency
KAERI
Korea Atomic Energy Research Institute
KAIF
Korea Atomic Industrial Forum
KALC
krypton absorption in liquid carbon dioxide
KANUPP
Karachi Nuclear Power Plant (Pakistan)
KAPL
Knolls Atomic Power Laboratory
KBG
Kernkraftwerk-Betriebsgesellschaft, m.b.H. (Germany)
KBWP
Kernkraftwerk Baden-Wuerttemberg Planungsgesellschaft (Germany)
KE
Kaiser Engineers
KEEPS
Kodak Ektaprint Electronic Publishing System
Keff
effective multiplication factor
KEMA
Tot Keuring van Elektrotechnische Materialen, N.V. (Netherlands)
KERMA
kinetic energy released in material
KEWA
Kernbrennstoff-Wiederaufarbeitungs-Gesellschaft, m.b.H. (Germany)
KEWB
kinetic experiment on water boilers
KFKI
Központi Fizakai Kutató Intézet (Hungary)
KGBS
krypton gas bottling station
KG&E
Kansas Gas & Electric
KKB
Kernkraftwerk Brunsbuettel, G.m.b.H. (Germany)
KKK
Kernkraftwerk Krummel, G.m.b.H. (Germany)
KKL
Kernkraftwerk Leibstadt, A.G. (Switzerland)
KKN
Kernkraftwerk Niederaichbach, G.m.b.H. (Germany)
KKP
Kernkraftwerk Phillipsburg, G.m.b.H. (Germany)
KMC
Kerr McGee Corp.
KNFDI
Korea Nuclear Fuel Development Institute
KNPP
Kewaunee Nuclear Power Plant
KNPS
Kuosheng Nuclear Power Station (Taiwan)
KNU
Korean Nuclear Unit
KPDS
key plant damage state
KRB
Kernkraftwerk Gundremmingen Betriebsgesellschaft (Germany)
Kernkraftwerk RWE-Bayernwerk, G.m.b.H. (Germany)
KRR
Kansai Research Reactor (Japan)
KSAs
knowledge, skills, and abilities
KSB
Klein, Schanzlin and Becker Aktiengesellschaft (Germany)
KSF
Karen Silkwood Fund
KSGE
Kansas Gas & Electric Co.
KSH
Kernenergie-Gesellschaft Schleswig-Holstein, m.b.H. (Germany)
KSTR
Kema Suspension Test Reactor (Netherlands)
KTG
Kerntechnische Gesellschaft im Deutschen Atomforum, e.V. (Germany)
KTI
key technical issue
KTS
Kerntechnische Sektion der Schweizerischen Vereinigung für Atomenergie (Switzerland)
KTU
key technical uncertainty
KWG
Kernkraftwerk Graben, A.G. (Switzerland)
KWL
Kernkraftwerk Lingen, G.m.b.H. (Germany)
KWO
Kernkraftwerk Obrigheim, G.m.b.H. (Germany)
KWS
Kernkraftwerk Sud, G.m.b.H. (Germany)
KWU
Kraftwerk Union Aktiengesellschaft (Germany)

L

[ Previous | Next ]

LA
licensing assistant
local alarm
LACBWR
LaCrosse Boiling Water Reactor
LACE
LWR (light-water reactor) aerosol containment experiment
LAFM
Los Alamos Fuel Model
LALL
low-activity level liquid [system]
LAMPRE
Los Alamos Molten Plutonium Reactor Experiment
LAN
local area network
LAND
League Against Nuclear Dangers
LANL
Los Alamos National Laboratory (formerly Los Alamos Scientific Laboratory)
LAPL
Louisiana Power & Light Co.
LAPPES
large power plant effluent study
LAPRE
Los Alamos Power Reactor Experiment
LAR
license amendment request
licensing action report
limited analytical review
local automatic regulation
LASL
Los Alamos Scientific Laboratory (now LANL)
LAW
low-acid waste
LAWB
Los Alamos Water Boiler
LBB
leak before break
LBE
licensing-basis event
LBL
Lawrence Berkeley Laboratory
LBLOCA
large-break loss-of-coolant accident
LBP
land-based plant
lumped burnable poison
LBPR
lumped burnable poison rod
LBRB
leak before risk of break
LC
level controller
local control
locked closed
LCCC
large-component cleaning cell
LCCV
large-component cleaning vessel
LCHS
large-component handling system
LCL
lower control limit
LCM
LOCA (loss-of-coolant accident) core melt
LCO
limiting condition for operation
LCR
large component removal
log count rate
LCRE
lithium-cooled reactor experiment
LCRM
linear count rate meter
LCS
leakage collection system
leakage control system
level control system
loop control system
LCTI
large-component test installation
LCTL
large-component test loop
LCV
level control valve
local control valve
LCVIP
licensee contractor vendor inspection program
LD
letdown
lethal dose
L/D
length to diameter
LDCC
large-diameter component cask
LDR
load definition report
low dose rate
L/DRS
level and density recorder switch
LDS
leak detection system
LDST
letdown storage tank
LE
left end
limit of error
LEAC
levelized energy adjustment clause
LED
light-emitting diode
LEFM
linear elastic fracture mechanics
LEID
limit of error on inventory difference
LEL
large engineering loop
lower electrical limit
LEMUF
limit of error on material unaccounted for
LEO
lasers and electro-optics
LEP
local emergency protection
LER
licensee event report
LERF
large early release frequency
LERO
local emergency response organization
LERP
large early release probability
LES
limited early site
Louisiana Energy Services
LESR
limited early site review
LET
linear energy transfer
LEU
license to export uranium
low-enriched uranium
LFA
lead Federal agency
LFBR
liquid fluidized bed reactor
LFBR-CX
liquid fluidized bed reactor--critical experiment
LFDCP
local fire detection control panel
LFL
lower flammability limit
LFMS
license fee management staff
LGR
light-water-cooled, graphite-moderated reactor
LGS
Limerick Generating Station
lower group stop
LH
low head
LHC
Little Harbor Consultants, Inc.
LHGR
linear heat generation rate
LHM
loop-handling machine
LHR
linear heat rate
LHS
Latin Hypercube Sampling
loop-handling system
LHSI
low-head safety injection
LHST
laundry and hot shower tank
LI
level indicator
LIC
level indicating controller
level indicator controller
loop insertion cell
LIFO
last in, first out
LILCO
Long Island Lighting Co.
LIM
ligament instability model
lower inlet module
LIMB
liquid metal breeder
LIMSW
limit switch
LIM
SWlimit switch
LINAC
linear accelerator
LIONS
Licensing and Inspection Online System
LIRS
level indicator recording switch
LITR
low-intensity test reactor
LIWB
Livermore Water Boiler
LL
liquid limit
LLCS
low-level compaction station
LLD
low-level dose
lower limit of detection
LLEA
local law enforcement agency
LLFM
low-level flux monitor
LLLWT
low-level liquid waste tank
LLMPP
liquid level monitor port plug
LLNL
Lawrence Livermore National Laboratory
LLRT
local leak-rate test
LLRW
low-level radioactive waste
LLRWPAA
Low-Level Radioactive Waste Policy Amendments Act
LLS
low-level solid
low-low set
LLSV
low-level storage vault
LLSWV
low-level solid-waste storage vault
LLT
liquid level transducer
LLTR
large-leak test rig
LLW
low-level radioactive waste
low-level waste
LLWBG
low-level-waste burial ground
LLWSV
low-level-waste storage vault
LM
labor management
local manual
LMEC
Liquid Metal Engineering Center
LMFBR
liquid metal fast breeder reactor
LMFR
liquid metal fuel reactor
LMFRE
liquid metal fuel reactor experiment
LMHX
liquid metal heat exchanger
LMP
licensing milestone plan
LMR
liquid metal reactor
LMS
licensing management system
LMTD
logarithmic mean temperature difference
LNG
liquefied natural gas
liquid natural gas
LNGS
LaCrosse Nuclear Generating Station
LNS
liquid nitrogen system
London Nuclear Services
LNT
linear, no-threshold
LNW
loss of normal water
LN2
liquid nitrogen
LO
lock open
locked open
lube oil
LOA
letter of agreement
line of assurance
LOBI
loop blowdown investigation
LOCA
loss-of-coolant accident
LOCE
loss-of-coolant experiment
LOCF
loss of coolant flow
LOCP
loss-of-coolant protection
LOCV
loss of condenser vacuum
LOF
lack of fusion
loss of feedwater
loss of flow
LOFA
loss-of-feedwater accident
loss-of-flow accident
LOFC
loss of forced circulation
loss of forced cooling
LOFT
loss-of-fluid test
LOFW
loss of feedwater
LOFWS
loss of flow without scram
LOHS
loss of heat sink
LOHSWS
loss of heat sink without scram
LOI
loss of ignition
LOMF
loss of main feedwater
LOMFW
loss of main feedwater
LOOP
loss of offsite power
LOP
loss of offsite power
loss of power
LOPAR
low parasitic fuel
LOPI
loss of pipe integrity
LOPO
low power
LOPRA
low-power reactor assembly
LOPS
loss-of-power start
LOR
lower oil reservoir
LORD
licensing online retrieval data
LORDS
licensing online retrieval data system
LORT
licensed operator requalification training
LOSP
loss of offsite power
loss of station power
loss of system pressure
LOST
lube oil storage tank
LOU
letter of understanding
limited official use
LOVS
loss-of-voltage signal
loss-of-voltage start
LP
liquid penetrant
low pressure
LPC
loop preparation cask
LPCI
low-pressure coolant injection
low-pressure core injection
LPCIS
low-pressure coolant injection system
LPCS
low-pressure core spray
LPD
linear power density
local power density
LPDR
local public document room
LPE
loop preparation equipment
LPG
liquefied petroleum gas
liquid petroleum gas
low-pressure gas
LPGS
Liquid Pathway Generic Study
LPHSW
last pass heat sink welding
LPI
low-power injection
low-pressure injection
LPIS
low-pressure injection system
LP&L
Louisiana Power & Light Co.
LPLNG
low-pressure liquefied natural gas
LPM
licensing project manager
LPMA
loose-parts-monitor assembly
LPMS
loose-parts monitoring system
LPNGP
low-pressure noble gas processing
LPOL
low-power operating license
LPR
Lynchburg Pool Reactor
LPRM
local power range monitor
low-power range monitor
LPRS
low-pressure recirculation system
LPSI
low-pressure safety injection
LPSIP
low-pressure safety injection pump
LPSP
low-power set point
LPSW
low-pressure service water
LPT
liquid penetrant testing
low-pressure turbine
LPTF
low-power test facility
LPTR
Livermore Pool Type Reactor
LPZ
low-population zone
LR
level regulator
load reject
load rejection
LRA
locked-rotor accident
LRB
licensing review basis/bases
LRC
level recorder controller
Lewis Research Center
local recovery center
LRED
licensing reportable event determination
LRG
license review group
licensing review group
LRIA
level removable instrument assembly
LRL
Lawrence Radiation Laboratory
LRM
lead reactor manufacturer
logarithmic radiation monitor
LRP
large rotating plug
LRPE
licensee regulatory performance evaluation
LRRP
long-range research plan
LRS
level recording switch
liquid radwaste system
LRTS
liquid radwaste treatment system
LRVOS
liner recombiner and vacuum outgassing system
LRW
liquid radioactive waste
LRX
large reactor critical experiment
LS
level switch
lighting system
locked shut
LSA
low specific activity
LSB
last-stage blade
LSCS
LaSalle County Station
LSDF
large sodium disposal facility
LSDP
Lake Superior District Power Co.
LSFT
logic system functional test or testing
LSI
licensed supervising instructor
LSNM
low strategic significance special nuclear material
LSP
level set point
lower sequential permissive
LSR
Lynchburg Source Reactor
LSRO
limited senior reactor operator
LSS
Licensing Support System
LSSA
Licensing Support System Administrator, Office of (NRC)
LSSARP
Licensing Support System Advisory Review Panel
LSSC
less safety-significant component
LSSP
latest scram set point
LSSS
limiting safety system set point
limiting safety system setting
LSTF
large-scale test facility
LT
leak testing
level transmitter
LTA
lead test assembly
less than adequate
low-temperature adsorber
LTBT
Limited Test Ban Treaty
LTC
linear translation case
load tap changer
LTD
letdown
LTL
lot truck load
LTM
long-term maintenance
low-trajectory missile
LTMD
less than minimum detectable
LTNGP
low-temperature noble gas process
Ltop
low-temperature overpressure protection
LTP
long-term program
LTR
lattice test reactor
licensing technical review
Lockheed Training Reactor
LTS
License Tracking System
Licensing Tracking System
LTSF
lid tank shielding facility
LTSP
long-term seismic program
LTV
large test vessel
LUWAS
lowest unit with age significance
LUXATOM
Syndicat Luxembourgeois pour l'Industrie Nucléaire (Luxembourg)
LV
leaky valve
LVDT
linear variable differential transducer
linear variable differential transformer
linear variable displacement transducer
linear voltage differential transformer
LWA
limited work authorization
LWBR
light-water breeder reactor
LWCHW
light-water-cooled, heavy-water-moderated reactor
LWGR
light-water-cooled graphite-moderated reactor
LWMS
liquid waste management system
LWOP
leave without pay
LWP
liquid waste processing
LWPS
liquid waste processing system
LWR
light-water reactor
LWTS
laundry waste treatment system

M

[ Previous | Next ]

M/A
manual or automatic
MAA
material access area
MAAC
Mid-Atlantic Area Council
MAAP
material access authorization program
modular accident analysis program
MAC
maintenance action card
management advisory committee
Management Analysis Co.
material accounting
maximum allowable concentration
MACCT
multiple assembly cooling cask test
MAD
maintenance assembly-disassembly
MAELU
Mutual Atomic Energy Liability Underwriters
MAG
magnetics
MAI
miscellaneous actuation instrumentation
MAIN
Mid-American Interpool Network
MAIT
matrix analysis of insider threat
MAM
management and administration manual
MAN
Maschinenfabrik Augsberg-Nürnberg, A.G. (Germany)
MAP
maintenance action plan
maintenance assessment package
methodology assessment program
MAPI
Mitsubishi Atomic Power Industries, Inc. (Japan)
MAPLHGR
maximum average planar linear heat-generation rate
maximum average planar linear heat-generation ratio
MAR
maintenance action request
MARAD
Maritime Administration
MARCA
Mid-Continent Area Reliability Coordination Agreement
MARCH
meltdown accident response characteristic
MASE
microwave amplification by stimulated emission
MAT
management advisory team
MB
mixed bed
MB-2
Model Boiler-Two
MBA
material balance area
MBO
management by objective
MBP
monobutyl phosphate
Mbq
megabecquerel
MBR
material balance report
MC
main circulator
main condenser
major component
manual chapter (NRC)
metal clad
Mitsubishi Corporation
MCA
material control and accountability
maximum credible accident
multichannel analyzer
MC&A
material control and accounting
MCAP
Management Corrective Action Plan
MCB
main control board
MCC
Materials Characterization Center
motor control center
movement control center
MCCB
molded-case circuit breaker
MCES
main condenser evacuation system
MCET
materials, chemical, and environmental technology
MCHFR
minimum critical heat flux rate
minimum critical heat flux ratio
MCI
managed cost improvement
millicurie
MCIG
miscellaneous control and instrumentation group
MCIS
materials compatibility in sodium
MCLAMS
measurement, control, LEID (limit of error of the inventory difference) and MUF (material unaccounted for) ID (inventory difference) simulation
MCOV
maximum continuous operating voltage
MCPR
maximum critical power ratio
minimum critical power ratio
MCR
main control room
material certification report
MCREC
main control room environmental control
MCRH
main control room habitability
MCRHS
main control room habitability system
MCS
main circulator subsystem
master control station
Monte Carlo Sampling
MCSS
metallic core support structure
MCV
movable closure valve
MD
management directive
measured discard
MDA
minimum detectable activity
MDAFWP
motor-driven auxiliary feedwater pump
MDB
master database
MDC
maximum dependable capacity
minimum detectable concentration
moderator density coefficient
MDCT
mechanical draft cooling tower
MDEFWP
motor-driven emergency feedwater pump
MDEP
Maine Department of Environmental Protection
MDF
mechanical design flow
MDHR
mini-decay heat removal
MDI
Many Diverse Interests, Inc.
MDL
minimum detectable limit
MDM
metal disintegration machining
modified diffusion method
MDNBR
minimum departure from nucleate boiling ratio
MDP
master decommissioning plan
MDR
manufacturer's date report
MDS
megawatt demand setter
MDU
motion detection unit
ME
maintenance effectiveness
M&E
material and equipment
MEA
maintenance engineering analysis
Materials Engineering Associates
MEAG
Metropolitan Electric Authority of Georgia
MEC
Mid American Energy Co.
MECAS
multienergy californium assay system
MEED
Metropolitan Edison Co.
MEHC
Mid American Energy Holdings Co.
MEF
median energy of fission
MEFV
maintenance equipment floor valve
MEGAS
multienergy gamma assay system
MEI
maintenance effectiveness indicator
maximally exposed individual
MEIS
minimum electrical isolation scheme
MEL
master equipment list
Mitsubishi Electric Corp. (Japan)
MELB
moderate-energy line break
MELC
moderate-energy line crack
MEOD
maximum extended operating domain
MEPNS
Ministry of Environmental Protection and Nuclear Safety (Ukraine)
MEQ
mechanical equipment qualification
MERIT
management evaluation and risk identification tree
MERITS
methodically engineered, restructured, and improved technical specifications
MERLIN
Medium-Energy, Light-Water-Moderated, Industrial Nuclear Reactor (United Kingdom)
MES
maintenance engineering services
MESA
multielement skew angle
MESF
minimum engineered safety feature
MESL
maximum emergency service load
METAFRAM
Métallurgie Française des Poudres, S.A. (France)
MEU
medium-enriched uranium
MeV
million electron volts
MEWS
Mixed Energy Waste Study
MF
mound facility
MFB
main feeder bus
MFC
master flow controller
MFCI
molten fuel coolant interaction
MFCS
main feedwater control system
MFI
minimum flow interlock
MFIS
main feedwater isolation signal
MFIV
main feedwater isolation valve
MFL
main feedwater line
master fuse list
maximum foreseeable loss
MFLPD
maximum fraction of limiting power density
MFP
main feed power
main feedwater pump
mixed fission product
MFPG
mixed fission products generator
MFPT
main feedwater pump turbine
MFPTC
main feed pump turbine condenser
MFRV
main feedwater regulation valve
MFS
main feedwater system
mobilization for survival
MFT
multiprogramming with a fixed number of tasks
MFTA
multiduct fuel test assembly
MFV
main feedwater valve
maintenance floor valve
MFW
main feedwater
MFWCS
main feedwater and condensate system
MFWLB
main feedwater line break
MFWRV
main feedwater regulating valve
MFWV
main feedwater valve
MG
manual group
motor generator
M/G
motor generator
M-G
motor generator
MGCR
maritime gas-cooled reactor
MGCR-CX
maritime gas-cooled reactor--critical experiment
MGDS
mined geologic disposal system
MGEC
Madison Gas & Electric Co.
MGVC
manual governing valve control
MHA
maximum hypothetical accident
MH-1A
Mobile High Power Plant No. 1A
MHC
mechanical-hydraulic control
MHD
magnetohydrodynamics
MHDC
magnetohydrodynamic conversion
MHFPR
maximum hypothetical fission-product release
MHI
Mitsubishi Heavy Industries, Ltd. (Japan)
MHNGS
Marble Hill Nuclear Generating Station
MHP
material handling procedure
MHTGR
modular high-temperature gas-cooled reactor
MHTS
main heat transport system
MI
manual individual
mineral insulated
MIBK
methyl isobutyl ketone
MIC
microbiologically induced corrosion
microbiologically influenced corrosion
MICDS
movable in-core detector system
MIDAS
meteorological information and dose acquisition system
meteorological information and dose assessment system
MIDS
movable instrument drive system
M&IE
meals and incidental expenses
MIL
material identification list
material identification log
MIMS
metal impact monitoring system
MINET
momentum integral network
MIP
maintenance improvement program
master inspection plan
MIPS
master inspection planning system
MIS
maintenance information system
management information system
MIST
maximum isothermal system temperature
minor isotopes safeguards technique
multiloop integral system test
MIT
Massachusetts Institute of Technology
MITI
Ministry of International Trade and Industry (Japan)
MITR
Massachusetts Institute of Technology Reactor
MKU
Mary Kathleen Uranium, Ltd. (Australia)
ML
manufacturing license
ML-1
Mobile Low Power Plant No. 1
MLD
mean low-water datum/data
median lethal dose
MLHGR
maximum linear heat generation rate
maximum linear heat generation ratio
MLO
main lube oil
MLP
main loop pump
MLS
Medilab Select (Belgium)
multi-level secure
MLSR
Monthly Letter Status Report
MLSV
main loop shutoff valve
MLW
mean low water
MLWMS
miscellaneous liquid waste management system
MM
mechanical maintenance
modified Mercalli
MME
Mercantile Marine Engineering and Graving Docks Co., N.V. (Belgium)
MMG
motor-motor generator
MMI
man-machine interface
modified Mercalli intensity
MMP
maintenance manual procedure
MMPA
Magnetic Material Producers Association
MMSA
man-machine systems analysis/analyses
MMWEC
Massachusetts Municipal Wholesale Electric Co.
MNCR
material nonconformance report
MNGP
Monticello Nuclear Generating Plant
MNP
maximum negative pressure
MNPS
Millstone Nuclear Power Station
MNS
McGuire Nuclear Station
M&O
management and organizational
MO
mixed oxide
modulate open
motor operator
MOA
memorandum/memoranda of agreement
MOC
middle of cycle
minimum operable channel
MOD
motor-operated disconnect
MODE
maximum organ dose equivalent
MODEM
modulator-demodulator
MONAL
mobile nondestructive assay laboratory
MOOS
maintenance out of service
MOP
maintenance outline procedure
MOR
monthly operating report
MORT
management oversight risk tree
MOTA
materials open test assembly
MOU
memorandum/memoranda of understanding
MOV
metal oxide varister
motor-operated valve
MOVATS
motor-operated valve analysis and test system
MOX
mixed oxide
MOXF
mixed-oxide fuel
MP
magnetic particle
maintenance procedure
Midland Plant
MPA
multiplant action
multiplant activity
MPAI
maximum permissible annual intake
MPBB
maximum permissible body burden
MPC
maximum permissible concentration
Metals Properties Council
Montana Power Co.
multi-purpose canister
MPCA
maximum permissible concentration in air
MPCW
maximum permissible concentration in water
MPD
maximum permissible dose
MPE
maximum permissible exposure
MPFF
maintenance preventable functional failure
MPL
master parts list
maximum permissible level
mechanical properties loop
MP&L
Mississippi Power & Light Co.
MPO
manufacturing production order
MPP
maximum positive pressure
M&PP
materials and plant protection
MPR
mechanical pressure regulator
MPRE
medium-power reactor experiment
MPRT
multipurpose rail transport
MPS
manpower system
mps
meter per second
MPS
monitoring and protection system
multipurpose sampler
MPSC
Maine Public Service Co.
MPT
magnetic particle testing
minimum pressurization temperature
MPX
multiplexer
MQE
materials and qualifications engineering
mechanical quality engineering
MQS
motion to quash subpoena
MR
material requisition
monitoring report
MRB
Management Review Board
MRBI
maintenance rule baseline inspection
MRBT
multirod burst test
MRC
Medical Research Council (United Kingdom)
MREM
millirem
MRI
material receiving instruction
MRMU
mobile radiological measuring unit
MRO
medical review officer
MRP
modification/rework package
MRPC
motorized rotating pancake coil
MRR
material receiving report
medical research reactor
MRS
manipulator repair shop
manufacturer's record sheet
monitored retrievable storage
MRSS
main and reheat steam system
MS
main steam
manual sequential
margin of safety
milestone
M/S
maintenance/surveillance
MSA
management self-assessment
material surveillance assembly
mechanical signature analysis/analyses
mines safety appliance
MSAR
mines safety appliance research
MSB
main steamline break
multi-assembly sealed basket
MSBE
molten salt breeder experiment
MSBR
molten salt breeder reactor
MSCA
mixed spectrum critical assembly
MSCI
molten steel coolant interaction
MSG
modular steam generator
MSGTR
multiple steam generator tube rupture
MSHA
Mine Safety and Health Administration
MSICV
main steam isolation check valve
MSIP
modified stabilization in place
MSIS
main steam isolation signal
MSIV
main steam isolation valve
MSIVLCS
main steamline isolation valve leakage control system
MSL
main steamline
maximum still-water level
mean sea level
MSLA
main steamline accident
MSLB
main steamline break
MSLD
mass spectrometer leak detector
MSLI
main steamline isolation
MSLIVSS
main steamline isolation valve sealing system
MSLRDS
main steamline rupture detection system
MSM
master/slave manipulator
modified source multiplication
MSNM
special nuclear material of moderate strategic significance
MSPB
Merit System Protection Board
MSR
material status report
maximum steam rate
moisture separator reheater
molten salt reactor
MSRE
molten salt reactor experiment
MSRP
Multiple System Responses Program
MSRV
main steam relief valve
MSS
main steam system
main support structure
management systems section
Manufacturers Standardization Society of the Valve and Fittings Industry
mixed spectrum superheater
modified scram system
MSSC
more safety-significant component
MSSCE
mixed spectrum superheater critical experiment
MSSR
mixed spectrum superheat reactor
main steam safety relief (valve)
MSSS
main steam supply system
main steam support structure
MSSV
main steam safety valve
main steam shutoff valve
MSV
mean square voltage
MS&W
maintenance shop and warehouse
MT
magnetic particle test
magnetic particle testing
material transfer
materials test
melt through
MTBF
mean time between failures
MTC
moderator temperature coefficient
multi-assembly transfer cask
M&TE
measuring and test equipment
MTER
multitest evaluation report
MTF
mean time to failure
MTG
main turbine generator
MT/G
main turbine generator
MTI
maintenance team inspection
mandatory team inspection
Mechanical Technology, Inc.
MTL
materials test loop
Mobiltherm light
MTOS
magnetic tape operations system
MTPF
maximum total peaking factor
MTR
materials testing reactor
MTS
module tracking system
MTT
microwave theory and techniques
MTTF
mean time to failure
MTTR
mean time to repair
mean time to replacement
MTU
metric ton of uranium
metric ton unit
module test unit
MU
makeup
MUF
material unaccounted for
MUG
MOV Users Group
MU&P
makeup and purification
MUR
management update and retrieval
mockup reactor
MUSE
Musicians United for Safe Energy
MUT
makeup tank
MUTN
MOVATS Users Technical Notice
MUX
multiplexer
MVP
mechanical vacuum pump
MVS
multiple virtual storage
MVT
multiprogramming with a variable number of tasks
MW
megawatt
MWDC
multiple weld data card
Mwe
megawatt electric
MWHT
miscellaneous waste holdup tank
MWO
maintenance work order
MWS
makeup water system
MWST
makeup water storage tank
miscellaneous waste storage tank
Mwt
megawatt thermal
MW-yr
megawatt-year
MYAP
Maine Yankee Atomic Power Co.
MYAPS
Maine Yankee Atomic Power Station
MZFR
Mehrzweck Forschungsreaktor (Germany)

N

[ Previous | Next ]

NA
not applicable
not available
N/A
not applicable
NAA
neutron activation analysis/analyses
NAB
nuclear assembly building
NAC
national agency check
Nuclear Assurance Corporation
NACE
National Association of Corrosion Engineers
NAD
nuclear accident dosimetry
NAEC
North Anna Environmental Coalition
NAESCO
North Atlantic Energy Service Corp.
NAFTA
North American Free Trade Agreement
NAGRA
Nationale Genossenschaft für die Lagerung Radioaktiver Abfälle (Switzerland)
NAI
sodium iodide
NAIG
Nippon Atomic Industry Group Co., Ltd. (Japan)
NAN
Nuclear Awareness Network
NANT
National Academy for Nuclear Training
NAPA
National Academy of Public Administration
NAPCA
National Air Pollution Control Administration
NAPS
North Anna Power Station
NAPSIC
North American Power Systems Interconnection Committee
NAPUS
nuclear auxiliary power unit system
NARA
National Archives and Records Administration
NARADCom
Natick Research and Development Command
NARM
naturally occurring or accelerator-produced radioactive material
NARUC
National Association of Regulatory Utility Commissioners
NAS
National Academy of Sciences
nonreactor assessment staff
NASA
National Aeronautics and Space Administration
NASAP
Nonproliferation Alternative Systems Assessment Program
NAS-NRC
National Academy of Sciences--National Research Council
NASE
National Academies of Science
NASUCA
National Association of State Utility Consumer Advocates
NAWAS
national warning system
NB
nuclear blank
nuclear boiler
NBGEL
New Bedford Gas and Edison Light Co.
NBL
New Brunswick Laboratory
NBP
New Brunswick Power (Canada)
NBR
nuclear boiler rated
NBS
National Bureau of Standards (now National Institute of Standards and Technology)
NBSR
National Bureau of Standards Reactor
NC
neutron controller
normally closed
nuclear construction
NCA
neutron control assembly
NCAI
National Congress of American Indians
NCBR
near-commercial breeder reactor
NCF
no containment failure
NCIG
Nuclear Construction Issues Group (EPRI)
NCP
network control program
NCR
nonconformance report
nonconforming condition report
notification-of-change report
NCRERP
North Carolina Radiation Emergency Response Plan
NCRP
National Council on Radiation Protection
NCRP(M)
National Committee on Radiation Protection and Measurements
NCRWS
National Campaign for Radioactive Waste Safety
NCS
national communications system
nuclear criticality safety
NCSA
National Center for Supercomputing Applications
NCSAG
Nuclear Cross Section Advisory Group
NCSCR
North Carolina State College Reactor
NCSL
National Conference of State Legislatures
NCSS
neutron control subsystem
NCSUR
North Carolina State University Reactor
NCV
non-cited violation
NCVP
natural circulation verification program
ND
negative declaration
normally deenergized
NDA
no detectable activity
nondestructive analysis
nondestructive assay
NDC
nuclear data committee
NDCT
natural draft cooling tower
NDE
nondestructive examination
NDHX
natural draft heat exchanger
NDL
nuclear data link
NDRC
National Defense Research Council
NDT
nil ductility temperature
nil ductility transition
nondestructive testing
NDTT
nil ductility transition temperature
NE
normally energized
nuclear engineering
NEA
Northeast Energy Alliance
Nuclear Energy Agency (OECD)
Nuclear Engineering Associates
NEB
Nuclear Energy Board (Ireland)
NEC
National Electrical Code
Nuclear Energy Center
NECAP
Nutmeg Electric Companies Atomic Project
NECNP
New England Coaliltion on Nuclear Pollution
NECO
Nuclear Engineering Company
NECSS
Nuclear Energy Center Site Survey
NEDS
nuclear employee data system
NEES
New England Electric System
NEGEA
New England Gas and Electric Association
NEI
Nuclear Energy Institute (formerly NUMARC and USCEA)
NEIL
Nuclear Electric Insurance Limited
NEJAC
National Environmental Justice Advisory Council
NELIA
Nuclear Energy Liability Insurance Association
NELPIA
Nuclear Energy Liability Property Insurance Association
NEMA
National Electrical Manufacturers Association
NENE
Northeast Nuclear Energy Co.
NEO
nuclear engineering and operations
NEP
New England Plant
NEPA
National Environmental Policy Act
NEPCO
New England Power Company
NEPIA
Nuclear Energy Property Insurance Association
NERA
National Economic Research Associates, Inc.
NERC
National Electric Reliability Council
National Environment Resource Council (United Kingdom)
Nuclear Energy Research Centre (Belgium)
NERHL
Northeastern Radiological Health Laboratory
NERP
nuclear experience review program
NERV
nuclear emulsion recovery vehicle
NERVA
nuclear engine for rocket vehicle application
NESC
National Electric Safety Code
Nuclear Energy Software Center
NESCWS
nonessential services chilled water system
NESDIP
Nestor Shielding and Dosimetry Improvement Program
NESF
normal engineered safety feature
NESP
National Environmental Studies Project
NEST
nuclear emergency search team
NETR
Nuclear Engineering Test Reactor
NEU
Northeastern Utilities (Company)
NEUSSN
Northeastern U.S. Seismic Network
NEUT
Northeast Utilities
NEVP
Nevada Power Co.
NEW
Nuclear Energy Women
NEWS
Nuclear Engineering Workstation Simulator
NEWSTAR
nuclear energy waste space transportation and removal
NF
neutron flux
NFC
no further consequences
NFCA
nonfuel core array
NFI
Nuclear Fuel Industries, Ltd. (Japan)
NFPA
National Fire Protection Association
NFRRC
nuclear fuel recovery and receiving center
NFS
network file system
Nuclear Fuel Services Co.
NFSA
new fuel storage area
NG
nitroglycerin
noble gas
NGA
Nationale Gesellschaft für Förderung der Industriellen Atomtechnik (Switzerland)
NGE
North Georgia Electric Membership Corp.
NGF
Natural Guard Fund
NGN
Next Generation Network
NGSF
noble gas storage facility
NHPA
National Historic Preservation Act
NHY
New Hampshire Yankee
NI
never incorporated
nuclear instrument
nuclear instrumentation
nuclear island
NIAC
Nuclear Industry Assessment Committee
Nuclear Insurance Association of Canada
NIC
Nuclear Industry Check Valve Group
Nuclear Industry Consortium (Belgium)
NICWB
nuclear island cooling water building
NIDA
National Institute on Drug Abuse
NIH
National Institutes of Health (U.S. Public Health Service)
NII
Nuclear Installations Inspectorate (United Kingdom)
NIM
nuclear instrument module
NiMo
Niagara Mohawk Power Corp.
NIOBE
numerical integration of the Boltzmann equation
NIOSH
National Institute for Occupational Safety and Health (U.S. Public Health Service)
NIPA
notice of initiation of procurement action
NIPS
Northern Indiana Public Service Co.
NIRA
Nucleare Italiana Reattori Avanzati, SpA (Italy)
NIRB
Nuclear Insurance Rating Bureau
NIRL
negligible individual risk level
NIRMA
Nuclear Information and Records Management Association, Inc.
NIRNS
National Institute for Research in Nuclear Science (United Kingdom)
NIRS
National Institute of Radiological Sciences (Japan)
Nuclear Information and Resource Service
NIS
Network Information Service
Nevada Inspection Service
Newly Independent States
nuclear instrumentation system
NISCO
Nuclear Inspection Services Company
NISP
National Industrial Security Program
NISPOM
National Industrial Security Program Operating Manual
NIST
National Institute of Standards and Technology (formerly National Bureau of Standards)
NJBPU
New Jersey Board of Public Utilities
NJOAL
New Jersey Office of Administrative Law
NLI
National Lead Industries
Nuclear Industries, Inc.
NMA
National Mining Association
NMAC
Nuclear Maintenance Assistance Center (Electric Power Research Institute)
NMCC
Nuclear Material Control Center (Japan)
NMDB
nuclear maintenance database
NMEC
Northern Michigan Electric Cooperative, Inc.
NMED
nuclear material events database
NMIS
nuclear materials information system
nuclear materials inventory system
NMMSS
nuclear materials management and safeguards system
NMP
national meter programming
Niagara Mohawk Power Corp.
NMPNS
Nine Mile Point Nuclear Station
NMRG
Nuclear Managers Review Group
NMS
national measurement system
neutron monitoring system
NMSS
Nuclear Material Safety and Safeguards, Office of (NRC)
NMST
new materials system test
NMT
nuclear medicine technologist
NN
nearest neighbor
nearest neighboring
NNC
National Nuclear Corporation, Ltd. (United Kingdom)
NNCSC
National Neutron Cross Section Committee
NNDC
National Nuclear Data Center
NNEC
National Nuclear Energy Commission (Brazil)
NNECO
Northeast Nuclear Energy Co.
NNESCO
Northeast Nuclear Energy Services Co.
NNI
nonnuclear instrumentation
NNIS
nonnuclear instrumentation system
NNPA
Nuclear Non-Proliferation Act of 1978
NNPS
Norco Nuclear Power Station
NNS
nonnuclear safety
NNSA
National Nuclear Safety Administration (China)
NNSDD
Newport News Shipbuilding and Dry Dock Company
NNTP
network news transfer protocol
NNWSI
Nevada Nuclear Waste Storage Investigation
NO
normally open
NOAA
National Oceanic and Atmospheric Administration
NOAC
Nuclear Operations Analysis Center
NOD
notice of deviation
NOED
notice of enforcement discretion
NOI
notice of indication
NOL
Naval Ordnance Laboratory
normal operating loss
NON
notice of nonconformance
NOP
normal operating procedure
NORCUS
Northwest College and University Association for Science
NORM
naturally occurring radioactive material
NOS
not otherwise specified
NOUE
notice of unusual event
notification of unusual event
NOV
notice of violation
NOWUS
normal operation with unscram
NP
negative pressure
nuclear power
NPA
nuclear plant analyzer
NPAR
nuclear plant aging research
NPC
Nuclear Power Co.
NPCA
National Paint and Color Association
NPCC
Northeast Power Coordinating Council
NPD
national policy debate
Nuclear Power Demonstration (Canada)
NPDB
nuclear plant data bank
NPDES
National Pollutant Discharge Elimination System
NPE
nuclear plant engineering
nuclear power experience
NPEC
Nuclear Power Engineering Committee
NPEP
Nuclear Plant Equipment Procurement Working Group
NPF
nuclear power facility
NPG
Nuclear Power Group, The (United Kingdom)
NPGS
nuclear power generating station
NPIS
nuclear plant island structure
NPO
nuclear plant operator
NPP
nuclear performance plan
nuclear power plant
NPPD
Nebraska Public Power District
NPR
National Performance Review
new production reactor
nonpower reactor
NPRCG
Nuclear Public Relations Contact Group (Italy)
NPRDS
Nuclear Plant Reliability Data System (INPO)
NPRF
Northrop Pulse Radiation Facility
NPS
nominal pipe size
normal pressurizer spray
Nuclear Power Service (Westinghouse)
numerical plotting system
NPSH
net positive suction head
NPSI
Nuclear Power Service Incorporated
NPSRA
Nuclear-Powered Ship Research Association (Japan)
NPSRS
nuclear power safety reporting system
NPT
national pipe thread
Nonproliferation Treaty
NPTF
nuclear proof test facility
NPZ
nickel-plated Zircaloy 4
NQAA
Nuclear Quality Assurance Agency
NQAM
nuclear quality assurance manual
NQAP
nuclear quality assurance plan
NR
narrow resonance
nonconformance report
NRA
Nuclear Regulatory Administration
Nuclear Regulatory Authority (Ukraine)
NRAP
naturally radioactive product
NRB
nonconformance review board
NRC
National Research Council
Nuclear Regulatory Commission, U.S.
NRCAR
NRC Acquisition Regulation
NRCC
National Research Council (Canada)
Northern Rockies Cancer Center
NRDC
National Resources Defense Council
NRDS
Nuclear Rocket Development Station
NRE
nuclear research emulsion
NREP
National Reliability Evaluation Program
neutron resonance escape probability
NRHE
nonregenerative heat exchanger
NRHX
nonregenerative heat exchanger
NRIM
narrow resonance infinite mass
NRL
Naval Research Laboratory (United Kingdom)
NRPB
National Radiological Protection Board
NRR
Naval Research Reactor
Nuclear Reactor Regulation, Office of (NRC)
NRRO
nuclear radiation-resistant oil
NRT
national response team
NRTS
National Reactor Test Station
NRU
National Reactor Universal
NRW
nonradioactive waste
NRWV
nonradioactive waste vent
NRX
National Research Reactor
nuclear engine reactor experiment
NS
near side
normally shut
nuclear ship
NSA
National Security Agency
Nuclear Safety Agency
Nuclear Science Abstracts
Nuclear Systems Associates
NSAC
Nuclear Safety Analysis Center
NSC
National Security Council
net-section collapse
net-suction collapse
Nuclear Safety Concern
NSCR
Nuclear Science Center Reactor
NSCW
nuclear service cooling water
NSDM
national security decision memorandum/memoranda
NSEP
National Security Emergency Preparedness
NSF
National Sanitation Foundation
National Science Foundation
Nuclear Science Foundation
NSFP
nonsodium fire protection
NSHC
no-significant-hazards consideration
NSHE
no-significant-hazards evaluation
NSI
national security information
NSIAC
Nuclear Strategic Issues Advisory Committee (NEI)
NSIC
Nuclear Safety Information Center
NSIP
Nuclear Safe Issues Program
NSLD
No Seismic Limit Duration
NSMH
Nuclear Systems Material Handbook
NSO
nuclear station operator
NSOA
nuclear safety operational analysis/analyses
NSP
Northern States Power Co.
NSPP
nuclear safety pilot plant
NSPS
nuclear safety protection system
NSQAC
Nuclear Supplier Quality Assurance Committee
NSTC
National Science and Technology Center
NSR
neutron source reactor
non-safety-related
NSRA
Nuclear Safety Research Association (Japan)
NSRB
Nuclear Safety Review Board
NSRG
Nuclear Safety Review Group
NSRL
Nuclear Structure Research Laboratory
NSRR
nuclear safety research reactor
NSRRC
Nuclear Safety Research Review Committee
NSRS
nuclear safety review staff
NSS
nuclear steam system
NSSM
national security study memorandum/memoranda
NSSS
nuclear steam supply system
nuclear steam system supplier
NSSSS
nuclear steam supply shutoff system
NSTF
Nuclear Science and Technology Facility
NSUM
neutron shuffler uranium monitor
NSW
nuclear service water
NSWMA
National Solid Waste Management Association
NSWS
nuclear service water system
NT
neutron transmitter
NTCP
near-term construction permit
NTE
not to exceed
NTEU
National Treasury Employees Union
NTF
nuclear test facility
NTIS
National Technical Information Service
NTOL
near-term operating license
NTP
National Toxicology Program
normal temperature and pressure
nuclear test plant
NTR
nuclear test reactor
nuclear testing reactor
NTS
Nevada Test Site
NTSB
National Transportation Safety Board
NU
Northeast Utilities
NUBARG
Nuclear Utility Backfitting and Reform Group
NUCLENOR
Centrales Nucleares del Norte, S.A. (Spain)
NUCLIT
Nucleare Italiana (Italy)
NUCPR
nuclear procedure requirement
NUDE
nuclear data evaluation
NUDOCS
Nuclear Documents System
NUDOCS/AD
Nuclear Documents System/Advanced Design
NUFCOR
Nuclear Fuels Corp. of South Africa
NUGEQ
Nuclear Utility Group on Equipment Qualification
NUGSBO
Nuclear Utility Group on Station Blackout
NUMAC
Nuclear Management and Control
NUMARC
Nuclear Management and Resources Council (now NEI)
NUMEC
Nuclear Materials and Equipment Corp.
NUMS
nuclear materials security
NUPEC
Nuclear Power Engineering Test Center
NUPIC
Nuclear Procurement Issues Committee
NUPLEX
Nuclear Utilities Plant Life Extension Steering Committee
NURE
national uranium resource evaluation
NUREG
NRC technical report designation (Nuclear Regulatory Commission)
NUREG/BR
NUREG brochure
NUREG/CP
NUREG conference proceedings
NUREG/CR
NUREG contractor report
NUREG/GR
NUREG grantee report
NUREG/IA
NUREG international agreement report
NUS
Nuclear Utilities Service
NUSCO
Northeast Utilities Service Company
NUSMG
Nuclear Utilities Software Management Group
NUSS
nuclear safety standard (International Atomic Energy Agency)
NUTAC
Nuclear Utility Task Action Committee
NVH
nitrogen vent header
NVLAP
National Voluntary Laboratory Accreditation Program
NW
normal waste
NWC
normal water chemistry
NWCC
neutron well coincidence counter
NWL
normal water leg
NWP
Nuclear Waste Project
NWPA
Nuclear Waste Policy Act of 1982
NWPAA
Nuclear Waste Policy Amendments Act of 1987
NWR
nuclear work request
NWS
National Weather Service
NWTRB
Nuclear Waste Technical Review Board
NYD
New York mean tide data
NYGAS
New York Gas Group
NYPA
New York Power Authority
NYPIRG
New York Public Interest Research Group
NYSADA
New York State Atomic and Space Development Authority
NYSEG
New York State Electric & Gas Corp.
NYSERDA
New York State Energy Research and Development Authority

O

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OA
oil to air
operating authorization
OAB
Országos Atomenergia John Urban: Bizottság (Hungary)
OAC
office allegation coordinator
OAD
operational availability date
OAI
outside air intake
OAR
operational assessment and readiness
OARP
operator accelerated retraining program
OAS
Organization of Agreement States
OATP
operational acceptance test procedure
OBA
operating-basis accident
OBE
Office of Business Economics
operating-basis earthquake
OBERS
Office of Business Economics Research Service
OBRA-90
Omnibus Budget Reconciliation Act of 1990
OC
Office of the Controller (NRC)
operating curve
operations center
OCA
Office of Congressional Affairs (NRC)
overcooling accident
OCAA
Office of Commission Appellate Adjudication (NRC)
OCB
oil collection basin
oil-operated circuit breaker
OCDE
Organisation de Coopération et de Développement Economiques (France)
OCDRE
Organic-Cooled Deuterium Reactor Experiment (Canada)
OCFO
Office of the Chief Financial Officer
OCI
oxide control and indication
OCIMS
Operations Center Information Management System
OCIO
Office of the Chief Information Officer (NRC)
OCLC
Online Computer Library Center, Inc.
OCM
Office of the Commission (NRC)
OCNPP
Oyster Creek Nuclear Power Plant
OCR
operational control record
OCRE
Ohio Citizens for Responsible Energy
OCRWM
Office of Civilian Radioactive Waste Management
OD
outside diameter
ODCM
offsite dose calculation manual
ODCWT
outer-diameter creeping wave technique
ODF
onsite decontamination facility
ODSCC
outer-diameter stress-corrosion cracking
outside-diameter stress-corrosion cracking
OE
oceanic engineering
Office of Enforcement (NRC)
operating engineer
operating experience
OEC
Ohio Edison Co.
OECD
Organization for Economic Cooperation and Development
OEDO
Office of the Executive Director for Operations (NRC)
OEM
original equipment manufacturer
OER
operating event report
OERTS
operational events report tracking system
OFA
optimized fuel assembly
OFPP
Office of Federal Procurement Policy
OFZS
Österreichisches Forschungszentrum Siebersdorf, G.m.b.H. (Austria)
OG
off-gas
owners group
OGC
Office of the General Counsel (NRC)
OGE
Office of Government Ethics
OGI
off-gas isolation
OGR
ORNL (Oak Ridge National Laboratory) Graphite Reactor
OGS
off-gas system
OGST
overthread guide sleeve tool
OGTB
off-gas treatment building
OH
Ontario Hydro (Canada)
OHER
Office of Health and Environmental Research (U.S. Department of Energy)
OHLH
overhead heavy-load handling
OHRS
overflow heat removal system
OHST
overhead storage tank
OHTCS
outer head temperature control system
OI
Office of Investigations (NRC)
operating instruction
optical isolator
outstanding item
OIC
online instrument and control
OIG
Office of the Inspector General (NRC)
OIP
Office of International Programs (NRC)
operating internal pressure
OJT
on-the-job training
OL
operating license
operating limit
operator license
OLIP
online instrument package
OLMCPR
operating limit maximum critical power ratio
OLTS
operator licensing tracking system
OM
operations manager
oxide melt
O/M
oxygen to metal
O&M
operation and maintenance
Operations and Maintenance Committee of ASME
OMB
Office of Management and Budget
OMCA
organic-moderated critical assembly
OMM
operation and maintenance manual
OMR
organic-moderated reactor
O&MR
operation and maintenance report
operations and maintenance reminder
OMRCA
organic-moderated reactor critical assembly
OMRE
organic-moderated reactor experiment
OMRR
Ordnance Material Research Reactor
ONCA
outer neutron control assembly
ONE
Operations Notification and Evaluation (form)
ONS
Oconee Nuclear Station
OOS
out of sequence
out of service
OOSC
onsite operations support center
OOSS
operations officer support system
OP
Office of Personnel (NRC)
oxygen pressure
OPA
Office of Public Affairs (NRC)
operational performance assessment
OPAC
online payment and collection
OPCTR
Operations Center
OPDRV
operation with a potential for draining the reactor vessel
OPEC
Organization of Petroleum Exporting Countries
OPEN
Organisation des Producteurs d'Energie Nucléaire (France)
OPERA
out-of-pile expulsion and reentry apparatus
OPF
Official Personnel File
OPFM
outlet plenum feature model
OPL
Omega Point Laboratories
OPM
Office of Personnel Management
OPPD
Omaha Public Power District
OPR
offsite procurement request
open pool reactor
OPS
Offshore Power Systems
operational protection system
overpressure protection system
overpressurization protection system
OPST
out-of-pile systems test
OPT
optimization
OPX
off-premise extension
OpyC
outer pyrolytic carbon
OQA
operations quality assurance
OQAP
operational quality assurance plan
OR
onsite representative
operating reactor
ORA
orifice rod assembly
O-RAP
operational reliability assurance program
ORAT
operational readiness assessment team
ORAU
Oak Ridge Associated Universities
ORB
outside reactor building
ORC
online reactivity computer
operational review committee
operations review committee
ORE
occupational radiation exposure
ORFM
outlet region feature model
ORGDP
Oak Ridge Gaseous Diffusion Plant
ORIC
Oak Ridge Isochronous Cyclotron
ORISE
Oak Ridge Institute for Science and Education
ORLA
operating reactor licensing action
ORNL
Oak Ridge National Laboratory
ORO
offsite response organization
ORR
operational readiness review
ORRR
Oak Ridge Research Reactor
ORRT
operations readiness review team
ORSORT
Oak Ridge School of Reactor Technology
ORU
Orange and Rockland Utilities, Inc.
OS
operating system
OSART
operational safety assessment review team
OSC
Office of Special Counsel
Oncology Services Corporation
operational support center
OSG
operations support group
OSHA
Occupational Safety and Health Act
Occupational Safety and Health Administration (U.S. Department of Labor)
OSI
open systems interconnection
OSIP
operational support information program
OSM
optical storage media
OSP
Office of State Programs (NRC)
operational surveillance program
OSRC
Offsite Review Committee
OSRE
Operational Safeguards Response Evaluation
operational security response effectiveness
OSS
operational storage site
OST
Office of Science and Technology
OSTI
operational safety team inspection
OSTR
Oregon State University TRIGA Reactor
OSU
Oregon State University
OSUR
Ohio State University Reactor
OSVS
Outlier Seismic Verification Sheet
OT
operating temperature
operational technology
OTA
Office of Technology Assessment
open test assembly
OTC
once-through cooling
OTIS
once-through integral system
OTM
overspeed trip mechanism
OTR
organic test reactor
OTSG
once-through steam generator
OTSR
once-through superheat reactor
OTTS
operations training and technical services
OUO
official use only
OWCP
Office of Workers' Compensation Programs
OWFN
One White Flint North
OWP
operations work procedure
OWR
Omega West Reactor
OWRR
Office of Water Resources Research
OZD
Offshore Zone of Deformation

P

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PA
performance assessment
personnel area
pressure alarm
Privacy Act
protected area
public address
purge alarm
PAA
primary auxiliary area
PAB
preliminary as built
primary auxiliary building
PABX
private automatic branch exchange
PAC
Pilgrim Area Collaborative
protection auxiliary cabinet
public affairs coordinator
PACC
protected air-cooled condenser
PACE
plant acquisition and construction equipment
PACP
Pacific Power Co.
PACV
postaccident containment venting
PAD
performance analysis and design
PADS
Personnel Access Data System
plant alarm and display system
PAEC
Pakistan Atomic Energy Commission
Philippine Atomic Energy Commission
PAG
protective action guideline
PAHL
pressure alarm, high limit
PAHR
postaccident heat removal
PAIC
public address intercommunications system
PAIP
public affairs and information program
PAL
permissive action link
personnel airlock
programmer assistance and liaison
prototype application loop
PAM
postaccident monitoring
PAMI
postaccident monitoring instrumentation
PAMS
postaccident monitoring system
PANE
People Against Nuclear Energy
PANL
plant annunciators list
PAO
postulated abnormal occurrence
Privacy Act Officer
public affairs officer
PAP
plant administrative procedure
power ascension program
PAPAS
pin and pellet assay system
PAPUC
Pennsylvania Public Utility Commission
PAR
passive autocatalytic recombiner
Pennsylvania Advanced Reactor
performance autocatalytic report
Pool Atómico Português (Portugal)
protective action recommendation
purchasing approval request
PARD
postaccident radioactivity depletion
PARR
Pakistan Atomic Research Reactor
postaccident radioactivity removal
PARV
power-activated relief valve
power-actuated relief valve
PAS
Privacy Act statement
probabilistic analysis staff
PASNY
Power Authority of the State of New York
PASS
postaccident sampling system
PAT
performance appraisal team
plutonium air transportable
preplaced aggregate technique
PATP
power ascension testing program
power ascension test program
PATRAM
packaging and transportation of radioactive material
PAX
private automatic exchange
PB
pipe break
proportional band
PBAPS
Peach Bottom Atomic Power Station
PBE
prompt burst excursion
prompt burst experiment
PBF
power burst facility
PBI
performance-based instruction
PBNP
Point Beach Nuclear Plant
PBR
pebble bed reactor
Plum Brook Reactor
PBRE
pebble bed reactor experiment
PBRF
Plum Brook Reactor Facility
PBS
pressure boundary subsystem
project breakdown structure
PBTF
pump bearing test facility
PBX
private branch exchange
PC
personal computer
plant computer
polar crane
pressure controller
process computer
professional communication
protective clothing
protective coating
PCA
pool critical assembly
primary control assembly
primary coolant activity
PCAM
punched card accounting machine
PCAS
primary central alarm station
PCB
power circuit breaker
printed circuit board
PC&BS
project controls and budget services
PCC
plutonium concentrator concentrate
primary component cooling
process chemistry cell
PCCGC
primary containment combustible gas control
PCCS
passive containment cooling system
PCCV
precracked Charpy V-notch
PCD
plutonium concentrator distillate
power control device
PCDC
plutonium canister decontamination cell
PCDIS
plant control, data, and instrumentation system
PCETF
power conversion equipment test facility
PCHRS
passive containment heat removal system
primary containment hydrogen recombiner system
PCI
pellet/cladding interaction
personnel contamination incident
Prestressed Concrete Institute
primary containment isolation
PCIE
President's Council on Integrity and Efficiency
PCIL
plant computer input list
PCIOMR
preconditioning interim operating management recommendation
PCIS
primary containment isolation system
PCIV
primary containment isolation valve
PCL
permissible contamination limit
PCLDI
prototype closed-loop development installation
PCLS
prototype closed-loop system
PCLT
prototype closed-loop test
PCM
pending contractual matter
power cooling mismatch
PCMI
pellet/cladding mechanical interaction
PCN
procedure change notice
PCP
post-construction permit
primary coolant pump
process control program
program control procedure
PCPS
pool cooling and purification system
PCPV
primary containment purge valve
PCR
plant change request
procedure change request
protective coating report
PCRB
personnel and control room building
PCRDL
primary control rod driveline
PCRDM
primary control rod drive mechanism
PCRM
primary certified reference material
PCRS
primary control rod system
PCRV
prestressed concrete reactor vessel
PCS
passive containment system
plant computer system
plant control system
power conversion system
pressure control system
primary coolant system
process computer system
process control sheet
PCSG
Pipe Crack Study Group
PCT
peak centerline temperature
peak cladding temperature
pellet/cladding temperature
PCTF
plant component test facility
PCTR
physical constant test reactor
PCV
pressure control valve
pressurizer control valve
PD
population density
population distribution
project director
pump discharge
PDA
predocketed application
preliminary design acceptance
preliminary design analysis
preliminary design approval
preliminary design assessment
preliminary design authorization
PDAS
plant data acquisition system
PDB
plant damage bin
PDC
predocketed construction
preliminary design criterion/criteria
principal design criterion/criteria
PDCO
plant design control office
PDD
Presidential Decision Directive
projected decision date
prospective decision date
PDES
preliminary draft environmental statement
PDF
plant design factor
probability density function
project design flood
PDH&DS
plant data handling and display system
PDHS
plutonium decontamination and hot shop
PDI
Performance Demonstration Initiative
PDIL
power-dependent insertion limit
PDL
power distribution limit
PDMS
postdefueling monitored storage
PDP
positive displacement pump
Process Development Pile
project definition phase
PDR
preliminary design report
pressurized deuterium reactor
public document room
PDRP
program data requirement plan
PDS
plant damage state
plant data system
power distribution system
predocketed special
project decision schedule
project descriptive summary
PDT
performance discharge test
PDTS
permanently defueled technical specification
PE
power engineering
project engineer
PEAP
procurement engineering assessment plan
PECO
Philadelphia Electric Co.
PEDS
protective equipment decontamination section
PEF
potential enforcement finding
PEIS
programmatic environmental impact statement
PEL
power electronics
PEMA
Pennsylvania Emergency Management Agency
PENELEC
Pennsylvania Electric Company
PEO
patrol emergency officer
plant equipment operator
PEP
performance enhancement program
PEPCO
Potomac Electric Power Co.
PEPR
precision encoder and pattern recognition
PER
problem event report
procurement evaluation request
PERMS
process and effluent radiological monitoring system
PERMSS
process and effluent radiological monitoring and sampling system
PERT
program evaluation and review technique
program evaluation report technique
PET
performance evaluation team
permanent equipment transfer
PETA
plutonium equipment transfer area
PETN
pentaerythritol tetranitrate
PETS
procedure for evaluating technical specifications
PETTE
post-emergency tabletop exercise
PEWS
plutonium equipment warm shop
PF
partition factor
prefilter
Progressive Foundation
proposed finding
protection factor
purge fan
PFCS
primary flow control system
PFD
process flow diagram
PFDAS
plant fire detection and alarm system
PFE
plenum fill experiment
PFES
proposed final environmental statement
PFG
paper flow group
piping and filter gallery
PFPCDS
plant fire protection carbon dioxide subsystem
PFPHS
plant fire protection Halon subsystem
PFPS
plant fire protection system
PFPWS
plant fire protection water subsystem
PFR
Prototype Fast Reactor (United Kingdom)
PFS
peripheral fixed shim
Private Fuel Storage, LLC
PFSF
Private Fuel Storage Facility
PG
particulate and gas
PGA
peak ground acceleration
PGCC
power generation control complex
P&GD
policy and guidance directive
PGDS
pressurized gas distribution system
PG&E
Pacific Gas & Electric Co.
PGG
power generation group
PGP
procedures generation package
PGQ
potentially generic question
PHA
pulse-height analyzer
PHERMEX
pulsed high-energy radiographic machine-emitted x-ray
PHF
plug-handling fixture
PHGA
peak horizontal ground acceleration
PHR
process heat reactor
PHS
Public Health Service
PHSPS
preservation, handling, storage, packaging, and shipping
PHTS
primary heat transport system
PHWR
pressurized heavy-water-moderated and -cooled reactor
pressurized heavy-water reactor
PI
performance indicator
physical inventory
plasticity index
position indication
pressure indicator
process instrumentation
proportional integral
purge isolation
P&I
piping and instrumentation
PIA
pressure indicator alarm
PIC
pressure-indicating controller
pressurized ion chamber
public information center
PICAN
Prairie Island Coalition Against Nuclear Storage
PID
partial initial decision
piping and instrumentation diagram
P&ID
piping and instrumentation diagram
PID
position indication device
project identification
proportional integral derivative
P&ID
piping and instrumentation diagram
piping and instrumentation drawing
process and instrumentation diagram
PIDS
project identification summary
PIE
postirradiation examination
postirradiation experiment
PIF
pool irradiation facility
problem identification form
pressure-injected footing
PIL
Plant Issues List (now the Plant Issues Matrix)
PIM
Plant Issues Matrix (formerly the Plant Issues List)
PIMS
pooled inventory management system
PIN
piping interference notification
potential interference notification
PING
particulate, iodine, and noble gas
PINGP
Prairie Island Nuclear Generating Plant
PINSTECH
Pakistan Institute of Nuclear Science and Technology
PIO
public information officer
PIOTA
postirradiation open test assembly
proximity-instrumented open test assembly
PIP
Performance Indicator Program
performance improvement plan
performance improvement program
position indication probe
Probabilistic Risk Assessment (PRA) Implementation Plan
problem investigation plan
prototypic inlet piping
PIPPAP
pile for producing power and plutonium
PIR
Petrolite Irradiation Reactor
plant internal report
problem identification report
problem investigation report
PIRG
Public Interest Research Group
PIRR
pipe inspection round robin
PIRT
phenomena identification and ranking table
PIS
pressure-indicating switch
process instrumentation system
PISA
Project Integrated Safety Assessment
PISC
Program for the Inspection of Steel Components
PIV
pressure-indicating valve
pressure isolation valve
PIXIE
proton-induced x-ray emission
PL
panel left
piping load
plastic limit
public law
PLATR
Pawling lattice test rig
PLBR
prototype large breeder reactor
PLC
power-line carrier
PLCEA
part-length control element assembly
PLCEDM
part-length control element drive mechanism
PLEX
plant life extension
PLOCAP
post-loss-of-coolant-accident protection
PLR
policy and labor relations
PLS
precautions, limitations, and set points
PLT
Princeton Large Torus
PM
photomultiplier
pressure multiplier
preventive maintenance
program manager
project manager
protective measure
PMA
personnel management analyst
plastic moderated assembly
PMC
programmable machine controller
Project Management Corporation
protective measures coordinator
PME
process and manufacturing engineering
PMF
probable maximum flood
PMH
probable maximum hurricane
PMI
plant manager instruction
PMIS
plant monitoring and information system
precision mechanisms in sodium
PML
probable maximum loss
PMM
pedestal-mounted manipulator
PMNP
platform-mounted nuclear plant
PMOG
plutonium maintenance and operating gallery
PMP
preoperational monitoring program
preventive maintenance procedure
probable maximum precipitation
program manual procedure
PMR
plant modification request
project manager report
PMS
performance measurement system
plant monitoring system
primary makeup system
probable maximum surge
program management staff
PMT
photomultiplier tube
postmaintenance testing
PMU
plant makeup
PMW
probable maximum wind
PMWP
probable maximum winter precipitation
PMY
professional man-year
PN
plant normal
preliminary notification
PNA
pulsed neutron activation
PNE
peaceful nuclear explosion
PNET
Peaceful Nuclear Explosion Treaty
PNL
Pacific Northwest Laboratory
PNNL
Pacific Northwest National Laboratory
PNO
preliminary notification of occurrence
PNPP
Palisades Nuclear Power Plant
Perry Nuclear Power Plant
PNR
Pittsburgh Naval Reactors Office
PNS
preliminary notification of safeguard
PNSRC
plant nuclear safety review committee
PNWL
Pacific Northwest Laboratory
PO
project officer
purchase order
POA
provisional operating authorization
POAH
point of adding heat
POD
point of discharge
probability of detection
PWR (pressurized-water reactor) oxide decontamination
PODCI
probability of detection and correct interpretation
POF
probability of failure
POG
piping and operating gallery
POGE
Portland General Electric Co.
POGO
Project on Government Oversight
POIS
prototype online instrument system
POL
possession-only license
provisional operating license
POM
position modulator
POP
peak overpressure
proof of principle
POPR
prototype organic power reactor
POPS
pressurizer overpressure protection system
POQAP
plant operational quality assurance procedure
POR
plant operations review
plutonium organic recycle
PORACC
principle of radiation and contamination control
PORC
plant operations review committee
PORV
pilot-operated relief valve
power-operated relief valve
POS
plant operating system
plant operational state
point of sale
POSA
preliminary operating safety analysis/analyses
POTC
Power Operations Training Center
PP
primary pressure
PPA
plutonium preparation area
power plant attendant
Princeton-Pennsylvania Proton Accelerator
probabilistic performance assessment
PPC
Pennsylvania Power Co.
plutonium process cell
plutonium product cell
pore pressure cell
PPDD
preliminary project design description
PPDI
plant process display instrumentation
PPDIL
pre-power-dependent insertion limit
PPE
personnel program effectiveness
PPFR
plutonium product filter room
PPG
policy and planning guidance
PPH
primary pump house
PPIS
plant protection and instrumentation system
PP&L
Pennsylvania Power & Light Co.
PPL
Plasma Physics Laboratory
plutonium product loadout
priority placement list
ppm
part per million
PPM
procedure preparation manual
PPMIP
plant performance and management improvement program
PPNM
physical protection of nuclear materials
PPP
point-to-point protocol
portable plotting package
PPPG
policy, planning, and program guidance
PPR
plant performance review
PPS
plant protection system
plant protective system
plutonium product storage
primary power system
pps
pulse per second
PPSAS
program planning and status assessment system
PPSP
power plant siting program
PPSPS
plutonium product shipping preparation station
PPSV
plutonium product storage vault
PQAD
plant quality assurance director
PQAM
project quality assurance manager
PQAP
project quality assurance plan
PQR
procedure qualification record
PR
Philippine Reactor
plant recovery
power range
press release
pressure recorder
procurement request
proposed rule
PRA
Paperwork Reduction Act of 1995
plutonium recycle acid
probabilistic risk analysis/analyses
probabilistic risk assessment
PRAF
probabilistic risk assessment fundamentals
PRATTP
probabilistic risk assessment technology transfer program
PRB
plant review board
procedure review board
PRBSG
pseudo-random binary sequence generator
PRC
Planning Research Corp.
plutonium rework cell
pressure recorder controller
PRCF
plutonium recycle critical facility
PRD
potentially reportable deficiency
PRDC
Power Reactor Development Co.
PRE
processing refabrication experiment
PREACS
penetration room exhaust air cleanup system
pump room exhaust air cleanup system
PRF
penetration room filtration
PRG
procedure review group
PRHR
passive residual heat removal
PRISIM
plant risk status information management
PRISM
power reactor inherently safe module
PRL
postulated rupture location
PRM
personal radiation monitor
petition for rulemaking
power range monitor
process radiation monitor
proposal for rulemaking
PRMS
process radiation monitoring system
PRNC
Puerto Rico Nuclear Center
PROM
programmable read-only memory
PROS
Professional Reactor Operator Society
PRR
Pawling Research Reactor
Philippines Research Reactor
pressure rise rate
Puerto Rico Reactor
PRRWS
public risk reduction worksheet
PRS
pressure response spectrum/spectra
process radiation sampler
PRSC
plutonium rework sample cell
PRT
pressurized relief tank
prompt relief trip
PRTR
plutonium recycle test reactor
PRTS
pressurizer relief tank system
PRV
pressure relief valve
PRVS
penetration room ventilation system
PRWRA
Puerto Rico Water Resources Authority
PS
Pilgrim Station
policy statement
power supply
pressure switch
pressurizer surge
PSA
personnel and service area
plant-specific action
probabilistic safety analysis/analyses
probabilistic safety assessment
PSAR
preliminary safety analysis report
PSB
personnel services building
plant service building
PSC
plant safety committee
plutonium stripping concentrate
Public Service Commission
Public Service Co. of Colorado
PSCD
plutonium stripping concentration distillate
PSCS
plant supervisory control subsystem
PSD
power spectral density
power spectrum density
PSDAR
post-shutdown decommissioning activities report
PSDD
preliminary system design description
PSDF
power spectrum density function
PSE
pressurized subcritical experiment
PSE&C
power supply engineering and construction
PSE&G
Public Service Electric & Gas Co.
PSER
preapplication safety evaluation report
PSF
performance shaping factor
personnel security file
plutonium stripper feed
poolside facility
PSH
pressure switch, high
PSHA
probabilistic seismic hazard assessment
PSI
preservice inspection
prioritization of safety issues
PSID
preliminary safety information document
PSIN
Public Service Co. of Indiana, Inc.
PSMD
Public Service of Maryland
PSMS
plant safety monitoring system
PSNH
Public Service Co. of New Hampshire
PSNM
Public Service Co. of New Mexico
PSNP
Pebble Springs Nuclear Plant
PSOK
Public Service Co. of Oklahoma
PSP
physical security plan
primary sodium pump
PSPGV
primary sodium pump guard vessel
PSPL
Puget Sound Power and Light Co.
PSQ
personnel security questionnaire
PSR
Pennsylvania State University Research Reactor
peripheral shim rod
permanent side reflector
plant status report
primary system relief
procurement status report
PSR&D
primary sodium removal and decontamination
PSRM
post-scram reactivity monitor
PSS
primary sampling system
probabilistic safety study
process sampling system
PSSA
preclosure systems safety analysis/analyses
PSSAR
preliminary standard safety analysis report
PSSP
primary sodium sampling package
PSSPS
primary sodium storage and processing system
PST
pressure suppression tank
primary surge tank
PSTF
pressure suppression test facility
proximity sensor test facility
pump seal test facility
PSTG
plant-specific technical guidelines
PSU
Publication Sales Unit
PSUR
Pennsylvania State University Reactor
PSV
pressurizer safety valve
PSW
plant service water
PSWG
plant-specific writers guide
PSWS
potable and sanitary water system
PT
penetrant test
penetrant testing
periodic test
periodic testing
phototransistor
pool temperature
preoperational test
preoperational testing
pressure and temperature
pressure transmitter
P/T
pressure and temperature
PTC
passive thermal control
post-turnover change
PTE
part-time equivalent
physics test exception
PTFG
Probabilistic Risk Assessment (PRA) Training Focus Group
PTI
pipe test insert
plugging temperature indicator
PTL
Pittsburgh Testing Laboratory
PTM
plant temporary modification
PTP
peak to peak
preoperational test program
proximity test plug
PTR
performance trend report
pool test reactor
pool training reactor
pressure tube reactor
programmer trouble report
proof test reactor
PTS
pressurized thermal shock
PTSE
pressurized thermal shock experiment
PTSF
pressurized thermal shock facility
PT/SP
pressure tube-to-spool piece
PTSR
pressure tube superheat reactor
PTSTF
pressurized thermal shock test facility
PUA
plant-unique analysis/analyses
PUAAG
plant-unique analysis-applications guide
Pub.
L.Public Law
PUC
Public Utility Commission
PUD
paired uranium detectors
public utility district
PULSTAR
pulsed training assembled reactor
PUP
peak underpressure
plutonium utilization program
PUR
Purdue University Reactor
PURPA
Public Utilities Regulatory Policy Act of 1978
PUSPATI
Pusat Penyelidikan Atom Tun Ismail (Malaysia)
PV
photovoltaic
pressure valve
pressure vessel
PVC
polyvinyl chloride
PVHA
probabilistic volcanic hazard assessment
PVLC
penetration valve leakage control
PVNGS
Palo Verde Nuclear Generating Station
PVORT
pump and valve operability review team
PVRC
Pressure Vessel Research Committee
PVS
plant vent stack
pressure vessel simulation
PVTI
piping and valve test insert
PW
potable water
P&W
Pratt and Whitney
PWG
principal working group (NEA)
PWHA
plutonium waste-handling area
PWHT
postweld heat treatment
PWR
pipe whip restraint
pressurized-water reactor
PWROG
Pressurized-Water Reactor Owners Group
PWSCC
primary water stress-corrosion cracking
PWST
protected water storage tank
PyC
pyrolytic carbon
PZR
pressurizer
PZR
LCSpressurizer level control system
PCSpressurizer pressure control system

Q

[ Previous | Next ]

QA
quality assurance
QAA
quality assurance audit
QAC
quality assurance checklist
quality assurance criterion/criteria
QAI
quality assurance instruction
QAIP
quality assurance inspection procedure
QAIRG
quality assurance installation review group
QAM
quality assurance manual
QA&O
quality assurance and operations
QAP
quality assurance procedure
quality assurance program
QAPI
quality assurance program index
QAPP
quality assurance program plan
QA/QC
quality assurance/quality control
QAR
quality assurance requirement
quality assurance representative
QC
quality control
QCI
quality control instruction
QCIP
quality control inspection procedure
QCIR
quality control inspection report
QCP
quality control procedure
QCS
Quad-Cities Station
QDO
quantitative design objective
QDPS
qualified display processing system
QE
quality engineer
QF
quality factor
quality form
QHO
qualitative health objective
quantitative health objective
QHR
quality history record
QIT
quality improvement team
QLR
quick-look report
QMP
qualification maintenance program
quality management program
QO
quick opening
QOBV
quick-opening blowdown valve
QPM
quality program manager
QPT
quadrant power tilt
QPTR
quadrant power tilt ratio
QR
quality revalidation
QS
quench spray
QSC
quality systems certificate
QSP
quality systems program
QSPDS
qualified safety parameter display system
QSR
quarterly statistical report
QSTF
quarter-scale test facility
QTC
Quality Technology Co.
QTP
quality test plan
QV
quality verification
QVFI
quality verification functional inspection
QVI
quality verification inspection

R

[ Previous | Next ]

RA
reduction of area
RA
regional administrator
Robotics and Automation Council
R/A
reliability/availability
RAB
reactor auxiliary building
RABNVS
reactor auxiliary building normal ventilation system
RABSRVS
reactor auxiliary building switchgear room ventilation system
RABV
reflood assist bypass valve
RAC
radiological assessment coordinator
regional assistance committee
report of abnormal condition
RACES
Radio Amateur Civil Emergency Service
RACS
rod action control system
rad
radiation absorbed dose
RAD
rapid access data
RADCON
radiologic control
RADS
radiation and dosimetry service
RAI
request for additional information
RAIP
requester's approval in principle
RAM
radioactive material
random access memory
reliability, availability, and maintainability
RAMS
regulatory activities manpower system
RANNP
Research Applied to National Needs Program
RAOC
relaxed axial offset control
RAP
radiological assistance plan
reliability assurance plan
remedial action program
restart action plan
RAPS
radioactive argon processing system
RAPTUS
rapid thorium-uranium system
RAREF
radiation and repair engineering facility
RARP
reliability assessment research program
RAS
reactor analysis and safety
recirculation actuation signal
remote acquisition station
RASCAL
Radiological Assessment System for Consequence Analysis
RAT
radiological assessment team
radiological assistance team
reserve auxiliary transformer
RATI
readiness assessment team inspection
restart assessment team inspection
RAW
risk assessment worth
RB
reactor building
RBA
radial blanket assembly
RBAL
reprocessing building analytical laboratory
RBC
reactor building cooling
RBCCW
reactor building closed-cooling water
RBCLCW
reactor building closed-loop cooling water
RBCLCWS
reactor building closed-loop cooling water system
RBCR
reprocessing building control room
RBCS
reactor building cooling system
RBCU
reactor building cooling unit
RBCW
reactor building cooling water
RBE
relative biological effectiveness
RBEDT
reactor building equipment drain tank
RBESI
reactor building exhaust system isolation
RBFC
reactor building fan cooler
RBHS
reactor building heating system
RBM
rod-block monitor
RBOF
receiving basin for offsite fuel
RBP
reactor building protection
RBPVS
reactor building purge ventilation system
RBS
reactor building spray
River Bend Station
RBSI
reactor building spray injection
RBSR
reactor building spray recirculation
reactor building spreading room
reprocessing building spreading room
RBTL
reactor building truck lock
RBVI
reactor building ventilation isolation
RBVPRM
reactor building vent process radiation monitor
RC
reactor cavity
reactor coolant
recording controller
rigid confinement
RCA
Radiation Control Agency
radiological controlled area
reactor coolant activity
root cause analysis
RCAP
root cause analysis program
RCB
reactor containment building
RCBHT
reactor coolant bleed holdup tank
RCBT
reactor coolant bleed tank
RCC
Radiochemical Centre Ltd. (U.K.)
reactor closed-cooling
rod cluster control
RCCA
rod cluster control assembly
RCCS
reactor cavity cooling system
RCDT
reactor coolant drain tank
RCE
reactor compatibility experiment
RCEP
Radiological Contingency and Emergency Plan
RCFC
reactor containment fan cooler
RCG
radioactivity concentration guide
recommended concentration guide
RCGM
reactor cover gas monitor
RCIC
reactor core isolation coolant
reactor core isolation cooling
RCICS
reactor core isolation cooling system
RCIS
rod control and information system
RCL
reactor coolant loop
RCLC
reactor coolant letdown cooler
RCM
reliability-centered maintenance
Response Coordination Manual
RCMU
reactor coolant makeup
RCN
Reactor Centrum Nederland (Netherlands)
RCP
radiological control program
reactor characterization program
reactor coolant pump
RCPB
reactor coolant pressure boundary
RCPS
reactor coolant pump system
RCRA
Resources Conservation and Recovery Act
RCS
reactor coolant system
R&CS
radiological and chemical support
RCSI
reactor coolant system integrity
RCSIL
rapid communication service information letter
RCSS
reactor core subsystem
RCT
response coordination team
rework/completion tag
RC&T
radiation control and test
RCTS
reactor coolant treatment system
RCTWS
railroad car and truck wash station
RCV
radiation control valve
RCW
raw cooling water
reactor cooling water
recirculating cooling water
RD
random driver
receipt day
requirements document
restricted data
R&D
research and development
RDA
rod drop accident
RDAT
remote data acquisition terminal
RDAU
remote data acquisition unit
RDDM
reactor deck development mockup
RDH
radioactive drain header
RDO
regional duty officer
RDOS
real-time disk operating system
RDP
reactor development program
RDS
reactor depressurization system
RDSD
reliability design support document
RDT
reactor development and technology
reactor drain tank
RE
radiation equipment
rare earth
right end
REA
radiologic engineering assessment
recycle acid
rod ejection accident
Rural Electrification Administration
REAC
Radiological Emergency Assistance Center (Oak Ridge, Tennessee)
REBA
relativistic electron beam accelerator
REC
radiant energy conversion
RECC
radiological effluent control commitment
RECHAR
recombiner charcoal adsorber
RECS
radiological emergency communications system
RECW
reactor enclosure cooling water
REETS
radiological effluent and environmental technical specification
REHR
reactor heat removal
REI
request for engineering investigation
REIC
Radiation Effects Information Center
REIRS
Radiation Exposure and Information Reporting System
REL
radiation evaluation loop
reactor equipment limited
REM
realistic evaluation model
rem
roentgen equivalent man
REMODCM
radiological effluent monitoring and offsite dose calculation manual
REMP
radiological environmental monitoring program
REP
radiological emergency plan
resonance escape probability
rep
roentgen equivalent physical
RER
radiation effects reactor
radioactive effluent release
regulatory effectiveness review
representative for experiment review
risk evaluation report
RERC
radiological emergency response coordination
RERO
radiological emergency response operation
RERP
radiological emergency response planning
RERS
reactor enclosure recirculation system
RERTR
reduced enrichment for research and test reactors
RES
Nuclear Regulatory Research, Office of (NRC)
RES
INSPresident inspector
RESAR
reference safety analysis report
RESC
reactor subcriticality
RESL
Radiological and Environmental Sciences Laboratory
RETS
radiological effluent technical specification
radiological environmental technical specification
REVAB
relief valve augmented bypass
REW
recycle water
RF
radiofrequency
release factor
reply finding
RFA
Regulatory Flexibility Act
removable fuel assembly
RFC
recirculation flow control
request for comments
RFCS
recirculation flow control system
RFI
radio frequency interference
request for information
RFIC
request for information or clarification
RFN
remote filter niche
RFO
refueling outage
RFP
reactor feed pump
request for procurement
request for proposal
reversed field pinch
Rocky Flats Plant
RFPA
request for procurement action
RFPT
reactor feed pump turbine
RFQ
request for quotation
RFT
revisable format text
RFW
reactor feedwater
RFX
reversed field experiment
RG
regulated gallery
regulatory guide
R.G.
regulatory guide
RG&E
Rochester Gas & Electric Corp.
RGM
radiogas monitor
RGR
rare-gas recovery
RH
relative humidity
RHC
reactor head cooling
RHR
residual heat removal
RHRP
residual heat removal pump
RHRS
residual heat removal system
RHRSW
residual heat removal service water
RHT
recycle holdup tank
RHTS
reactor heat transport system
RHX
regenerative heat exchanger
RI
radiation indicator
reactor island
Region I--King of Prussia, Pennsylvania (NRC)
resident inspector
resonance integral
R&I
removal and installation
RIA
reactivity-initiated accident
reactivity insertion accident
regulatory impact analysis or analyses
removable instrument assembly
RIAEC
Rhode Island Atomic Energy Commission
RIB
recruitment, incentives, and benefits
RICO
Racketeering Influenced and Corrupt Organizations Act
RIDR
receipt inspection data report
RIDS
receiving inspection data status
regulatory information distribution system
RIE
Replacement Item Evaluation
RIENA
Rassegra Internazionale Elettrònica Nucleare ed Aerospaziale (Italy)
RIF
reduction in force
RIG
risk-based inspection guide
RII
receiving inspection instruction
Region II--Atlanta, Georgia (NRC)
RIIC
rotary inertia included case
RIII
Region III--Lisle, Illinois (NRC)
RIL
research information letter
RIM
relative importance measure
RIMS
regional input-output modeling system
RINA
Registro Italiano Navale (Italy)
RIOPR
Rhode Island Open Pool Reactor
RIOT
remote input-output terminal
RIP
reactor internal pump
receiving inspection plan
RIPBR
risk-informed, performance-based regulation
RIPS
radioisotope power supply
RIR
radiological incident report
receipt inspection report
risk increase ratio
RIRP
Regulatory Issue Resolution Plan
RIS
reporting identification symbol
reservoir-induced seismicity
RISC
reduced instruction set computer
RISS
reactor internals subsystem
RITS
regulatory information tracking system
resource information tracking system
RIV
reactor isolation valve
Region IV--Arlington, Texas (NRC)
RJE
remote job entry
RKS
Raadet foer Kaernkraftsaekerhet (Sweden)
RL
reactor licensing
refracted longitudinal
RLE
review-level earthquake
RLO
Records Liaison Officer
RLOP
reactor licensing operating procedure
RLR
radioactive lighting rod
RM
radiation monitor
radiation monitoring
radiometric monitor
reactor manufacturer
remote manual
rulemaking
RMAAS
reactivity monitoring and alarm system
RMBCS
Rocky Mountain Bank Card System
RMC
Radiation Management Corporation
remote manual control
RM&C
reactor monitoring and control
RMCS
reactor makeup control system
reactor manual control system
RME
reasonable maximum exposure
RMF
reactivity measurement facility
RMIEP
risk methodology integration and evaluation program
RMP
risk management plan
RMRM
radioactive materials reference manual
RMS
radiation monitoring system
radiological monitoring system
regulatory manpower system
remote manual switch
RMW
reactor makeup water
RMWS
reactor makeup water storage
RMWST
reactor makeup water storage tank
RMWT
reactor makeup water tank
reactor makeup water transfer
RNA
ribonucleic acid
RNB
research nuclear battery
return to nucleate boiling
RNDT
reference nil ductility temperature
RNWP
reduced notch worth procedure
RO
reactor operator
regional office
remain open
reportable occurrence
restriction orifice
reverse osmosis
ROD
release order directive
ROI
region of interest
ROM
read only memory
ROP
record of purchase
ROS
requisition on stores
ROSA
Rig of Safety Assessment
ROSENERGO-ATOM
Nuclear Power Utility (Russia)
ROSPA
risk-based operational safety performance assessment
ROW
requisition on warehouse
right of way
RP
radiation protection
reactor pool
reactor pressure
reactor project
release point
RPAM
regional public affairs manager
RPAO
regional public affairs officer
RPAS
reactor protection actuating signal
RPB
reactor pressure boundary
RPC
Radiation Policy Council
Radiation Protection Committee
remote process cell
rod pattern controller
rotating pancake coil
RPCB
reactor power cutback
RPCC
remote process crane cave
RPCS
reactor plant control system
RPCWS
reactor plant cooling water system
RPD
reactor plant designer
RPDF
radiation protection design feature
RPE
radiation protection engineer
resource planning and evaluation
RPF
region peaking factor
right panel front
RPG
radiation protection guide
report program generator
RPI
relative position indication
rod position indicator
RPIS
rod position indication system
rod position information system
RPM
radiation protection manager
RPO
radiation protection officer
RPP
radiation protection plan
RPPS
reactor plant and process sampling
RPS
radiation protection supervisor
Reactor Program System
reactor protection system
regulatory performance summary
RPST
reaction products separator tank
RPT
radiation protection technician
reactor for physical and technical
recirculation pump trip
RPV
reactor pressure vessel
RPVI
reactor pressure vessel integrity
RPVRI
reactor pressure vessel reflective insulation
R&QA
reliability and quality assurance
RQD
rock-quality designation
RR
receiving report
review report
review request
RRA
Radiation Research Associates, Inc.
risk-reduction analysis/analyses
RRC
radiation recorder controller
reactor recirculation cooling
RRD
retendering receipt day
R&RE
radiation and repair engineering
RRG
regulatory response group
regulatory review group
research review group
RRI
resident reactor inspector
RRP
reactor recirculation pump
reactor refueling plug
RRPI
relative rod position indication
rotary relative position indicator
RRR
Raleigh Research Reactor
RRRC
Regulatory Requirements Review Committee
RRS
reactor recirculation system
reactor refueling system
reactor regulating system
required response spectrum/spectra
resin regeneration subsystem
RRTF
Regulatory Reform Task Force
RRW
risk reduction worth
RS
radiation source
reactor safeguards
reactor safety
reactor system
recirculation spray
reference section
RSA
remote shutdown area
RSAO
Regional State Agreements Officer
RSARR
Republic of South Africa Research Reactor
RSB
reactor service building
RSC
radiation safety committee
reactor safety coordinator
reactor site criterion/criteria
RSCE
reserve shutdown control equipment
RSCM
reserve shutdown control material
RSCS
reactor sequence control system
rod sequence control system
RSCW
Research Reactor, State College of Washington
RSD
relative standard deviation
responsible system designer
RSE
reserve shutdown equipment
RSEP
Robinson Steam Electric Plant
RSH
resin sluice header
RSHX
recirculation spray heat exchanger
RSI
reactor siting index
RSIC
Radiation Shielding Information Center
RSK
Reaktorsicherheitskommission (Germany)
RSLO
regional State liaison officer
RSNGS
Rancho Seco Nuclear Generating Station
RSO
radiation safety officer
reactor system outline
RSP
reactivity surveillance procedure
remote shutdown panel
rotating shield plug
RSPE
recruitment, staffing, and position evaluation
RSR
radiological safety review
reactor safety research
reference safety report
RSS
reactor safety study
reactor shutdown system
relay setting sheet
remote shutdown system
reserve shutdown system
RSSF
retrievable surface storage facility
RSSMAP
Reactor Safety Study Methodology Application Program
RSST
reserve station service transformer
RSW
raw service water
RT
radiographic test
reactor trip
reference temperature
RTB
reactor trip breaker
RTC
regional training center
removable top closure
RTCB
reactor trip circuit breaker
run to cladding breach
RTD
resistance temperature detector
resistance temperature device
Roentgen Technische Dienst B.V. (Netherlands)
RTDP
reactor technology development plan
revised thermal design procedure
RTE
relocation tabletop exercise
residual total elongation
RTG
radioactive thermoelectric generator
radioisotope thermoelectric generator
RTGB
reactor turbine generator board
RTL
radioisotope transport loop
RTM
reactor trip module
regulatory technical memorandum/memoranda
Response Technical Manual
Rtndt
reference temperature nil ductility
RTNSS
regulatory treatment of nonsafety systems
RTO
reactor trip override
RTP
rated thermal power
restart test program
RTS
reactor trip system
refueling water transfer and storage
RTSS
reactor trip switchgear system
RTT
reference transition temperature
RTV
room temperature vulcanizing
R&U
repairs and utilities
RV
Reactor Venezolano (Venezuela)
reactor vessel
release valve
relief valve
RVC
reactor volume control
remote valve control
RVDP
relief valve discharge piping
RVHVS
reactor vessel head vent system
RVID
Reactor Vessel Integrity Database
RVIS
reactor vessel instrumentation system
RVLIS
reactor vessel level instrumentation system
RVLM
reactor vessel level monitoring
RVRLIS
reactor vessel refueling level indication system
RVS
reactor vessel system
RVSS
reactor vessel support structure
RVUH
reactor vessel upper head
RW
raw water
Ringsdorff-Werke, G.m.b.H. (Germany)
river water
RWA
radwaste area
RWB
rod withdrawal block
RWC
reactor water cleanup
RWCS
reactor water cleanup system
RWCU
reactor water cleanup
RWDS
radwaste disposal system
RWE
Rheinisch-Westfälisches Elektrizitätswerk, A.G. (Germany)
rod withdrawal error
RWL
reactor water level
rod withdrawal limiter
RWM
rod worth minimizer
RWN
room work notification
RWP
radiation work permit
radwaste work permit
RWPC
radwaste process cell
RWPH
river water pump house
RWR
radioactive waste reduction
RWS
radwaste system
RWSF
radwaste solidification facility
RWSP
refueling water storage pool
RWSS
radwaste sample station
RWST
refueling water storage tank
RWT
radiation worker training
refueling water tank
RWTA
river water treatment area
RWTS
regenerant waste treatment subsystem
RWV
radioactive waste vent
RY
reactor-year

S

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SA
safety analysis/analyses
SA
safety assessment
service air
system administrator
S/A
subassembly
S&A
surveillance and accountability
SAAEB
South African Atomic Energy Board
SAC
Systems Automation Corp.
SAD
safety analysis diagram
safety assurance diagram
systems, assistant director
SADE
superheat advanced demonstration experiment
SAE
site area emergency
Society of Automotive Engineers
SAFDL
specified acceptable fuel design limit
SAFE
safeguards automated facility evaluation
Society for the Advancement of Fission Energy
SAFO
Swedish Atomic Forum
SAFR
sodium advanced fast reactor
SAFT
synthetic aperture focusing technique
SAG
senior advisory group
SAGSI
Standing Advisory Group on Safeguards Implementation
SAI
Science Applications, Inc.
SAIC
Science Applications International Corp. (formerly Science Applications, Inc.)
SAID
safety analysis input data
SAIGE
Società di Architettura Industriale per Gli Impiantidi Generazione de Energia, SpA (Italy)
SAL
service advisory letter
SALE
safeguards analytical laboratory evaluation
SALP
systematic assessment of licensee performance
SAM
stabilized assay meter
substitute alloy material
SAMA
Scientific Apparatus Makers Association
SAMDA
severe accident mitigation design alternative
SAMG
severe accident management guidelines
SAMIS
structural analysis and matrix inversion system
SAN
standard address number
SAP
Severe Accident Program
Special Access Program
startup administrative procedure
synthetic aperture program
SAPHIRE
Systems Analysis Program for Hands-on Integrated Reliability Evaluation
SAPL
Seacoast Antipollution League
SAPS
Shippingport Atomic Power Station
SAQV
safety assessment and quality verification
SAR
safety analysis report
SARA
severe accident risk assessment
systems analysis and risk assessment
SAREF
safety research experiment facility
SARP
Severe Accident Reduction Program
Severe Accident Research Plan
Severe Accident Research Program
SARRP
Severe Accident Risk Reduction Program
SART
site access refresher training
SAS
safety assessment system
secondary alarm station
security agency study
service air system
station air system
SASA
severe accident sequence analysis/analyses
SAT
site access training
spray additive tank
startup auxiliary transformer
station auxiliary transformer
systems approach to training
SATNUC
Société pour l'Applications Techniques dans le Domaine de l'Energie Nucléaire (France)
SAVC
structural assembly verification card
SAVS
safeguards area ventilation system
SAW
steam, air, water
submerged arc weld
submerged arc welding
SAYG
sign-as-you-go
SBA
Small Business Administration
SBACS
shield building air cleanup system
SBAECS
shield building air exhaust cleanup system
SBC
steam bypass control
SBCC
steam bubble collapse induced
SBCR
Small Business and Civil Rights, Office of (NRC)
SBCS
steam bypass control system
SBFAS
shield building air filtration actuation system
SBFU
stuck breaker failure unit
SBGT
standby gas treatment
SBGTS
standby gas treatment system
SBIR
Small Business Innovative Research
SBK
Schnell-Brüter-Kernkraftwerksgesellschaft, m.b.H. (Germany)
SBLC
standby liquid control
SBLOCA
small-break loss-of-coolant accident
SBO
station blackout
SBOC
superheated blowdown outside containment
SBR
Soviet Breeder Reactor
SBREFA
Small Business Regulatory Enforcement Fairness Act
SBVS
shield building ventilation system
SBWR
simplified boiling-water reactor
SC
safety class
secondary confinement
site characterization
site contingency
speed controller
surveillance compliance
SCA
secondary control assembly
simulated core assembly
single-channel analyzer
site characterization analysis/analyses
small component autoclave
sneak circuit analysis/analyses
SCAT
spray chemical addition tank
SCBA
self-contained breathing apparatus
SCBR
steam-cooled breeder reactor
SCC
shutdown cooling circulator
specialized common carrier
stress-corrosion cracking
SCCS
secondary chemical control system
shutdown cooling circulator subsystem
sodium chemistry control system
standby core cooling system
SCD
severe core damage
significant construction deficiency
SCDAP
severe core damage analysis package
SCDWMR
steam-cooled deuteriated water-moderated reactor
SCE
saturated calomel electrode
situation-caused error
Southern California Edison Co.
SCEAR
Scientific Committee on the Effects of Atomic Radiation
SCEG
South Carolina Electric & Gas Co.
SCE&G
South Carolina Electric & Gas Co.
SCEL
small-component evaluation loop
SCEW
system component evaluation worksheet
SCF
SNAP critical facility
sodium cleaning facility
SCFBR
steam-cooled fast breeder reactor
scfh
standard cubic foot/feet per hour
scfm
standard cubic foot/feet per minute
SCFS
secondary containment fill station
SCGA
sodium-cooled graphite assembly
SCHE
shutdown cooling heat exchanger
SCHES
shutdown cooling heat exchanger subsystem
SCHS
small-component handling system
SCI
secondary containment isolation
SCIV
secondary containment isolation valve
SCK
Studiecentrum voor Kernenergie (Belgium)
SCM
simulated core mockup
simulated core model
steam condensing mode
SCN
software change notice
specification change notice
SCO
senior control (room) operator
SCOA
sample cave operating area
SCORE
Standing Committee on Regulatory Effectiveness
SCOTTR
supercritical once-through tube reactor
SCP
security control point
site characterization plan
SCPPCS
secondary containment purge and pressure control system
SCR
selenium control rectifier
significant condition report
silicon-controlled rectifier
site characterization report
site characterization review
sodium-cooled reactor
software change request
SCRB
Senior Contract Review Board
SCRD
secondary control rod driveline
SCRDM
secondary control rod drive mechanism
SCRE
shift control room engineer
SCRM
secondary certified reference material
SCRO
senior control room operator
SCRS
secondary control rod system
SCRWC
Sierra Club Radioactive Waste Campaign
SCS
secondary coolant system
shutdown cooling system
sodium characterization system
Soil Conservation Service (U.S. Department of Agriculture)
SCSHX
shutdown cooling system heat exchange
shutdown cooling system heat exchanger
SCSI
Southern Company Services, Inc.
SCSIN
Service Central de Sûrété des Installations Nucléaires (France)
SCSS
Sequence Coding and Search System
SCST
spray chemical storage tank
SCTA
secondary container transfer area
SCTF
slab core test facility
sodium chemical technology facility
SCTI
sodium component test installation
SCTL
small components test loop
SCUMRA
Société Centrale de l'Uranium et des Minéraux et Métaux Radioactifs (France)
SCV
steel containment vessel
systems completion verification
SCVI
special construction verification inspection
SCWE
safety-conscious work environment
SCWHE
shutdown cooling water heat exchanger
SCWR
supercritical water reactor
SCWS
shutdown cooling water subsystem
SD
scram discharge
shakedown
shutdown
standard drawing
standards development
station directive
supply duct
system description
S/D
shutdown
SDA
standard design approval
startup detector assembly
supplier data approval
SDBCS
steam dump bypass control system
SDC
shield design code
shutdown cooling
structural design criterion/criteria
SDCC
small-diameter component cask
SDCS
shutdown cooling system
SDD
system design description
SDEM
Société d'Enterprise de Montages (France)
SDF
spillway design flood
SDG
standby diesel generator
SDGE
San Diego Gas & Electric Co.
SDH
side drill hole
SDHR
shutdown decay heat removal
SDHX
shutdown heat exchanger
SDIP
surveillance dosimetry improvement program
SDLC
synchronous data link control
system development life cycle
SD/LP
shutdown and low power
SDM
shutdown margin
SDMF
surveillance dosimetry measurement facility
SDMP
Site Decommissioning Management Plan
SDOF
single degree of freedom
SDP
setdown pool
SDR
significant deficiency report
SNAP Developmental Reactor
supplier deviation request
SDS
shutdown sequencer
steam dump system
submerged demineralizer system
SDSP
site director standard practice
SDV
scram discharge volume
steam dump valve
SDVIV
scram discharge volume instrument volume
SE
safety evaluation
shift engineer
significant event (NRC performance indicator)
subcritical experiment
SEA
Susquehanna Environmental Advocates
SEAONC
Structural Engineers Association of Northern California
SEAR
safety evaluation audit report
SEAS
Strategic Environmental Assessment Systems
SEASET
separate effects and systems effects test
SECC
Safe Energy Communication Council
SECHT
scoping emergency cooling heat transfer
SECOM
Safe Energy Coalition of Michigan
SECY
Secretary of the Commission, Office of the (NRC)
SEDSS
Sandia Environmental Decision Support System
SEE
INSignificant Event Evaluation and Information Network
SEE-IN
significant event evaluation--information notice
SEEN
Syndicat d'Etudes de l'Energie Nucléaire (Belgium)
SEFOR
Southwest Experimental Fast Oxide Reactor
SEFR
shielding experiment facility reactor
SELNI
Società Elettronucleare Italiana (Italy)
SELO
Società Elettronica Lombarda (Italy)
SEM
scanning electron microscope
SEMO
Société Belgo-Française d'Energie Nucléaire Mosane (Belgium)
SEN
Significant Event Notification (INPO)
SENA
Société d'Energie Nucléaire Franco-Belge des Ardennes (France)
SENN
Società Elettronucleare Nazionale (Italy)
SENTA
Société d'Etudes Nucléaires et de Techniques Avancées (France)
SEO
side entry orifice
SEP
safety enhancement program
site emergency plan
source evaluation panel
standby electric power
Systematic Evaluation Program
SER
safety evaluation report
Sandia Engineering Reactor
self-evaluation report
significant event report
SNAP Experimental Reactor
Staff Evaluation Report
SERB
State Environmental Review Board
SERC
Southeastern Electric Reliability Council
SERF
Sandia Engineering Reactor Facility
special environmental radiometallurgy facility
SERR
semiannual effluent release report
SERS
safety evaluation report supplement
SES
safety evaluation supplement
Senior Executive Service
steam electric station
SET
Special Evaluation Team
systems effects test
SETF
SNAP Experimental Test Facility
SETS
standard environmental technical specification
standardized environmental technical specification
SETU
Société d'Etudes et de Travaux pour l'Uranium (France)
SEUSSN
Southeastern United States Seismic Network
SEWS
Screening Evaluation Work Sheet
SF
source factor
spent fuel
SFA
single-failure analysis/analyses
spent fuel assembly
standard fuel assembly
SFAS
safety features actuation signal
SFBI
spent fuel building isolation
SF&CG
standard format and content guidance
SFCR
storage facility control room
SFCS
secondary flow control system
spent fuel cooling system
SFCSR
storage facility cable spreading room
SFD
severe fuel damage
SFDP
safety functions determination program
SFDST
severe fuel damage scoping test
SFEN
Société Française d'Energie Nucléaire (France)
SFP
spent fuel pit
spent fuel pool
SFPAVS
spent fuel pool area ventilation system
SFPC
spent fuel pool cooling
SFPCCS
spent fuel pool cooling and cleanup system
SFPCS
spent fuel pool cooling system
SFPO
Spent Fuel Project Office (NRC)
SFR
startup field report
SFRCS
steam and feedwater rupture control system
SFRP
Société Française de Radioprotection (France)
SFR&TA
system function review and task analysis
SFS
steam and feedwater system
SFSP
spent fuel storage pool
SFTA
spent fuel transportation accident
SFTT
spent fuel transfer tube
SG
safety guide
steam generator
S/G
steam generator
SGAE
Studiengesellschaft für Atomenergie, m.b.H. (Austria)
SGAHRS
steam generator auxiliary heat removal system
SGAS
steam generator available signal
SGB
steam generator blowdown
steam generator building
SGBD
steam generator blowdown
SGBPS
steam generator blowdown processing system
SGBS
steam generator blowdown system
SGCF
SNAP Generalized Critical Facility
SGD
steam generator dryout
SGDSM
steam generator degradation-specific management
SGE
Société Générale d'Enterprises (France)
SGEF
steam generator examination facility
SGER
safeguards evaluation report
SGFP
steam generator feedwater pump
SGGP
steam generator group project
SGHWR
steam-generating heavy-water reactor
SGI
Safeguards Information
Silicon Graphics International
SGIP
Steam Generator Integrity Program
SGIS
safeguards initiation signal
SGLIC
steam generator level instrumentation cabinet
SGML
standard generalized markup language
SGMSR
steam generator maximum steam rate
SGN
Société de Génie Nucléaire (France)
SGOG
Steam Generators Owners Group
SGR
self-generation reactor
sodium-graphite reactor
SGS
Salem Generating Station
segmented gamma scanner
steam generator subsystem
steam generator system
subgrid scale
S/GS
steam generator system
SGSA
steam generator subassembly
SGTF
steam generator test facility
SGTIP
Steam Generator Tube Integrity Program
SGTR
steam generator test rig
steam generator tube rupture
SGTS
standby gas treatment system
SGV
steam generator vessel
SGWLC
steam generator water level control
SHA
sodium hydroxide addition
solid homogeneous assembly
SHAA
sealed head access area
SHADE
shielded hot-air drum evaporator
SHARE
systems for heat and radiation energy
SHE
semihomogeneous experiment
standard hydrogen electrode
SHEAC
Safety, Health, and Environmental Appraisal Committee
SHEEC
Shearon Harris Energy and Environmental Center
SHF
storage-handling facility
SHI
Sumitomo Heavy Industries Ltd. (Japan)
SHMED
State Hazardous Materials Enforcement Development
S/HNP
Skagit/Hanford Nuclear Project
SHNPP
Shearon Harris Nuclear Power Plant
SHPO
State Historic Preservation Officer
SHRS
shutdown heat removal system
SHTL
small heat-transfer loop
SI
safety injection
security inspector
special instruction
surveillance inspection
surveillance instruction
système international (d'unités) (International System of Units)
SIAS
safety injection actuation signal
SIC
standard industrial classification
Standard Industrial Code
SICN
Société Industrielle de Combustible Nucléaire (France)
SICS
safety injection control system
SID
sodium ionization detector
SI/EB
safety injection/emergency boration
SIG
special inquiry group
SIGEN
Società Impianti Generazione Energia Nucleare, SpA (Italy)
SIHP
Sargent Industries, Huntington Park
SIL
service information letter
SIM
service information memorandum/memoranda
SIMEA
Società Italiana Meridionale Energia Atomica (Italy)
SIMS
safety issues management system
SIN
Schweizerisches Institut für Nuklearforschung (Switzerland)
SINB
Southern Interstate Nuclear Board
SINET
Shared Information Network
SIO
Società per l'Industria dell'Ossigeno e de Altri Gas (Italy)
SIPAO
simulator for postaccident operation
SIPI
Scientists Institute for Public Information
SIR
safeguards implementation report
safe integral reactor
safety issue resolution
self-initiated review
submarine intermediate reactor
SIRMO
senior information resource management official
SIRW
safety injection and refueling water
SIRWT
safety injection and refueling water tank
SIS
safety injection signal
safety injection system
site integrated schedule
Special Inspection Services
SISBO
self-induced station blackout
SISI
surveillance and inservice inspection
SIT
safety injection tank
safety injection transmitter
social implications of technology
structural integrity test
SITP
site inspection and test procedure
SJAE
steam jet-air ejector
SJWCP
skid jacket water cooling pump
SKA
Studienkommission für Atomenergie (Switzerland)
SKI
Swedish Nuclear Power Inspectorate
SL
safety limit
section leader
stationary low
S&L
Sargent & Lundy Engineers
SLAC
Stanford Linear Accelerator Center
SLB
status light box
steamline break
SLC
standby liquid control
State liaison coordinator
SLCRS
supplemental leakage collection and release system
supplementary leak collection and release system
SLCS
standby liquid control system
SLD
shutdown logic diagram
SLF
seismic load factor
SLI
steamline isolation
SLIP
serial line Internet protocol
SLIV
steamline isolation valve
SLMCPR
safety limit for minimum critical power
SLO
single-loop operation
State liaison officer
SLP
St. Lucie Plant
SLPS
State and local program support
SLSF
sodium-loop safety facility
SLTC
seismic loading for temporary condition
SLSV
shutdown-loop shutoff valve
SLUC
standard level user charge
SLWMS
secondary liquid waste management system
SM
shift manager
stationary medium
SMA
shielded metal arc
SMACNA
Sheet Metal and Air Conditioning Contractors' National Association
SMART
senior management assessment of readiness team
SMAW
shielded metal arc weld
shielded metal arc welding
submerged metal arc welding
SMBDB
structural margin beyond design basis
SMC
segmented maintenance cask
seismic methodology chain
systems, man, and cybernetics
SMM
seismic margins method
senior management meeting
subcooling margin monitor
SMP
simulator modification package
SMR
shield mockup reactor
solid moderated reactor
system modification request
SMSA
standard metropolitan statistical area
SMTI
sodium mechanisms test installation
SMTP
simple mail transfer protocol
SMUD
Sacramento Municipal Utility District
S/N
serial number
SNAME
Society of Naval Architects and Marine Engineers
SNAP
safeguards network analysis procedure
shielded neutron assay probe
Struthers Nuclear and Process Co.
systems for nuclear auxiliary power
SNC
Sierra Nuclear Corp.
SNE
Sociedad Nuclear Española (Spain)
SNEC
Saxton Nuclear Experimental Corp.
subgroup on nuclear export coordination
SNERP
Saxton Nuclear Experimental Reactor Project
SNG
synthetic natural gas
SNGS
Salem Nuclear Generating Station
SNI
Società Nucleare Italiana (Italy)
SNL
Sandia National Laboratories
SNM
Society for Nuclear Medicine
special nuclear material
SNOC
Southern Nuclear Operating Company
SNP
Sequoyah Nuclear Power Plant
Skagit Nuclear Power Project
SNPS
Seabrook Nuclear Power Station
Shoreham Nuclear Power Station
SNR
slow neutron reactor
supplier nonconformance report
SNRC
Soreq Nuclear Research Center
SNS
Seabrook Nuclear Station
spallation neutron source
SNUPPS
standardized nuclear unit power plant system
SO
Siemens Österreich (Austria)
status officer
supervising operator
SOA
statement of account
SOC
Statements of Consideration
SOCCS
summary of component control status
SOCIA
Société pour l'Industrie Atomique (France)
SOD
shallow outside diameter
Société d'Etudes pour l'Obtention du Deuterium (France)
SODERN
Société d'Etudes et Réalisations Nucléaires (France)
SOE
sequence of events
SOER
safety operational event report
significant operating event report
significant operating experience report
SOICS
summary of installation control status
SOL
senior operator license
SOM
shift operations manager
SONGS
San Onofre Nuclear Generating Station
SONOPCO
Southern Nuclear Operating Company
SOP
standard operating procedure
stepoff pad
Supervisory Orientation Program
SOPI
system operational performance inspection
SOPR
Spanish Open Pool Reactor
SOPREN
Società Progettazione Reattori Nucleari, SpA (Italy)
SOR
static O-ring
system of records
SORC
station operations review committee
SORIN
Società Ricerche Impianti Nucleari (Italy)
SORV
stuck-open relief valve
SORX
Security Organization Response Exercise
SOS
shift operations supervisor
SOV
solenoid-operated valve
SOW
statement of work
SP
sampling point
security procedure
set point
special project
special purpose
suppression pool
surveillance procedure
SPACS
sodium purification and characterization system
SPAHR
simulation package for assessing health risks
SPAR
simplified plant analysis risk
SPB
Security Policy Board
SPC
Siemens Power Corporation (formerly Exxon Nuclear)
standby pressure control
stored program controller
suppression pool cooling
SPCED
system for physical control of energy distribution
SPCP
statistical process control program
SPCU
suppression pool cleanup
SPDES
State Pollutant Discharge Elimination System
SPDS
safety parameter display system
SPEEDI
system for prediction of environmental emergency dose information
SPER
Security Plan Evaluation Report
SPERT
special power excursion reactor test
SPES
Simulatore per Esperienze di Sicurezza (Italy) [Simulator for Safety Experimental Analysis]
Simuluzione PWR per Esperienze di Sicurezza (Italy)
SPF
site population factor
standard project flood
SPGD
self-powered gamma detector
SP/HD
spool piece head
SPI
site population index
SPIAM
sodium purity in-line analytical module
SPIN
Società per Imprese Nucleare, SpA (Italy)
SPIP
Safety and Performance Improvement Program
SPMC
Seabrook Plan for the Massachusetts Communities
SPMS
suppression pool makeup system
SPND
self-powered neutron detector
SPOC
system preoperability checklist
SPOUT
system peripheral output utility
SPR
Sandia Pulsed Reactor
SPRF
Sandia Pulsed Reactor Facility
SPS
safety protection subsystem
secondary plant system
standard project storm
Summit Power Station
supplementary protection system
Surry Power Station
SPSC
Southwestern Public Service Co.
SP/SC
shield plug/support cylinder
SPSS
shield plug storage station
SPT
satellite pulse technique
special purpose test
standard penetration test
SPTF
sodium pump test facility
SPV
storage process vent
SPVC
simulated pressure vessel capsule
SPVR
storage process vent room
SPX
superheat power experiment
SQR
seismic qualification report
supplier quality representative
SQRS
seismic qualification review summary
SQRT
seismic qualification review team
SQUG
Seismic Qualification User's Group
Seismic Qualification Utility Group
SR
safety related
safety rod
source range
summary report
support reaction
surveillance requirement
S/R
safety relief
shipper-receiver
SRA
senior resident analyst
SRB
safety review board
SRBT
single-rod burst test
SRC
Science Research Council (United Kingdom)
shutdown reactor cooling
spares receiving checklist
SRCAS
safety-related control air system
SRCC
safety-related control circuit
SRCI
safety-related control and instrumentation
SRD
self-reading dosimeter
shipper-receiver difference
SR&D
sodium removal and decontamination
SRDA
sodium removal development apparatus
SRDC
safety-related design condition
SRDI
safety-related display instrumentation
SRE
safety-related equipment
sodium reactor experiment
SREC
standard radiological effluent control
SRFM
source range flux monitor
source range flux monitoring
SRGS
St. Rosalie Generating Station
SRH
switchyard relay house
SRHC
shutdown reactor head cooling
SRI
senior resident inspector
Stanford Research Institute
SRIAER
Scientific Research Institute for Atomic Energy Reactors (U.S.S.R.)
SRIC
senior resident inspector for construction
SRL
Savannah River Laboratory
SRM
source range monitor
staff requirements memorandum/memoranda
standard reference material
startup range monitor
SRN
specification revision notice
SRO
senior reactor operator
specification release order
SROA
safety-related operator action
SROS
send/receive from the opposite side
SRP
Savannah River Plant
small radioactive particle
small rotating plug
Standard Review Plan
SRP-LR
standard review plan--license renewal
SRRC
Standing Results Review Committee
SRS
sodium removal station
sodium removal system
solid radwaste system
SRSS
send/receive from the same side
square root of the sum of the squares
SRST
spent resin storage tank
SRT
special review team
spent resin tank
SRTI
Société de Recherches Techniques et Industrielles (France)
SRU
Société de Raffinage d'Uranium (France)
SRV
safety/relief valve
S/RV
safety/relief valve
SRVDL
safety/relief valve discharge line
S/RVDL
safety/relief valve discharge line
SRVL
safety-related vendor list
SRVO
safety relief valve open
SR/VO
safety relief valve open
SRWS
solid radioactive waste system
SS
safe shutdown
sample sink
sample station
sampling system
shift supervisor
site safety
site suitability
Southern Services, Inc.
special source
speed sensor
stainless steel
Susquehanna Station
systems specialist
SSA
safety system actuation (NRC performance indicator)
SSAB
site-specific advisory board
SSAR
site safety analysis report
standard safety analysis report
SSAS
small sample assay system
SSAT
safety significance assessment team
SSB
Source Selection Board
Strategic Steering Board
SSC
short segmented cask
simulated surveillance capsule
Southern Services Company
structure, system, and component
super system code
SSCA
spray system compressed air
SSCC
Solid-State Circuits Council
SSCCS
solid-state component control system
SSCR
spectral shift control reactor
SS&D
sealed source & device
SSDR
Sealed Source and Device Nationwide Registry
SSE
safe-shutdown earthquake
SSEB
Southern States Energy Board
South of Scotland Electricity Board
SSEI
Safety System Engineering Inspection
SSER
site safety evaluation report
supplemental safety evaluation report
supplement to safety evaluation report
SSES
Susquehanna Steam Electric Station
SSF
safe-shutdown facility
safety system failure (NRC performance indicator)
service storage facility
standby shutdown facility
SSFI
safety systems functional inspection
SSI
safe-shutdown impoundment
soil-structure interaction
steady-state irradiation
SSK
Strahlenschutzkommission (Germany)
SSLPS
solid-state logic protection system
SSMRP
seismic safety margins research program
SSNM
strategic special nuclear material
SSNPP
small-size nuclear power plant
SSO
System Security Officer
SSOMI
safety systems outage modification inspection
SSORA
security system operational recording and analysis/analyses
SSP
sodium sampling package
staff site position
static sodium pot
SSPB
Swedish State Power Board
SSPC
Steel Structure Painting Council
SSPI
safety system performance indicator
SSPM
safety system performance monitor
SSPS
solid-state protection system
SSPWR
small-size pressurized-water reactor
SSQE
safety system quality evaluation
SSR
seal steam regulator
secondary system relief
separate superheater reactor
site suitability report
site suitability review
specification status report
SSRAP
Senior Seismic Review and Advisory Panel
SSRCR
suggested State regulations for the control of radiation
SSRM
safety system readiness monitor
SSRT
slow strain rate test
SSS
safe-shutdown system
secondary sampling system
sensitized stainless steel
shield and seismic support
shift support supervisor
special safeguards study
special safety safeguard
standby shutdown system
SSST
site suitability source term
SST
secondary surge tank
siting source term
station service transformer
SS/T
steady-state/transient
SSTP
Super SARA Test Program
SSTR
solid-state track recorder
SSW
salt service water
standby service water
SSWP
station service water pump
SSWS
standby service water system
station service water system
ST
site team
source term
special test
speed transmitter
STA
Science and Technology Agency (Japan)
shift technical advisor
STAR
Sandia National Laboratories Transient Axial Relocation
shield test air reactor
space thermionic auxiliary reactor
STC
sound transmission coefficient
STCL
source-term control loop
STCP
source-term code package
STE
shield test experiment
shift technical engineer
special test exception
system test engineer
ST&E
security test and evaluation
STEC
South Texas Electric Cooperative, Inc.
STEP
safety test engineering program
source-term experiments project
STF
safety test facility
shield test facility
shielded test facility
STH
simplified time history
STI
special team inspection
surveillance test interval
STIF
short-term irradiation facility
STIR
shield test and irradiation reactor
special technical issue report
STL
site team leader
STP
short-term program
shutdown transfer panel
South Texas Project
special technical publication
staff technical position
standard temperature and pressure
surveillance test procedure
system test procedure
STPF
shield test pool facility
STPM
simulated thermal power monitor
STR
submarine thermal reactor
STRESS
structural engineering system solver
STRIDE
standard reactor island design
STS
Standard Technical Specification
STV
small test vessel
S/U
startup
SUNY
State University of New York
SUPO
super power
SUPS
static uninterruptible power supply
SUR
startup rate
SUS
startup system
SU/SD
startup and shutdown
SUT
startup transformer
SV
safety valve
Sv
sievert
SV
solenoid valve
stop valve
SVA
single-valve first-actuation
SVBC
simulated void box capsule
SVHHC
St. Vincent Hospital and Health Center
SW
service water
Struthers Wells Corp.
S&W
Stone and Webster Engineering Corp.
SWA
startup work authorization
SWBP
sidewall bearing pressure
SWBS
solid waste barrel storage
SWC
solid waste cask
SWCP
secondary water chemistry program
SWCS
salt water cooling system
SWDS
steam and water dump system
SWEC
Stone and Webster Engineering Corp.
SWESSAR
Stone and Webster Standard Safety Analysis Report
SWET
simulated water entry test
SWGR
switchgear
SWGTS
steam and waste gas treatment system
SWIS
service water intake structure
SWISS
sustained water interactions with stainless steel
SWM
Serber-Wilson method
SWMS
solid waste management system
SWO
stop-work order
SWP
service water pump
solid waste packaging
solid waste processing
special work permit
SWPP
Southwest Power Pool
SWPS
solid waste processing system
SWR
service water reservoir
sodium-water reaction
submarine water reactor
SwRI
Southwest Research Institute
SWRPRS
sodium-water reaction pressure relief subsystem
SWS
service water system
solid waste system
SWSR
solid waste shipping room
SWTS
secondary waste treatment system
SWU
separate work unit
separative work unit
SX
solvent extraction
SXF
solvent extraction feed
SYCA
Syndicat d'Etude des Centrales Atomiques (Belgium)
SYRFA
Société de Système Française pour les Réacteurs Avancées (France)
SZW
Ministry of Social Affairs and Employment (Netherlands)

T

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TA
Technical Associates
transfer aisle
T&A
time and attendance
TAAG
technical assessment and advisory group
TAC
task action commitment
technical assignment control
technical assistance contract
TACF
temporary alteration control form
TACS
technical assignment control system
test assembly conditioning station
TADOT
trip actuating device operational test
TAEC
Thailand Atomic Energy Commission
TAF
top of active fuel
TAG
technical advisory group
test assembly grapple
TAIC
Tokyo Atomic Industrial Consortium
TAL
transporter air lock
TAML
Taunton Municipal Lighting Plant
technical assistance management letter
TAP
task action plan
test analysis package
thermal analyzer program
TAPD
test and analysis program description
TAPM
technical assistance project manager
TAPMG
technical assistance program management group
TAPSS
technical assistance programs support system
TAR
technical assistance request
test analysis report
TARGET
thermal advanced gas-cooled reactor exploiting thorium
TASC
Technical Activity Steering Committee
TAUF
test assembly unloading fixture
TAVS
turbine area ventilation system
TAWC
Tennessee-American Water Co.
TB
total body
turbine building
TB&A
Theodore Barry and Associates
TBCCW
turbine building closed cooling water
TBD
to be determined
TBEA
training benefits and employee assistance
TBESI
turbine building exhaust system isolation
TBM
tunnel-boring machine
TBP
tributyl phosphate
TBS
turbine bypass system
TBSCCW
turbine building secondary closed cooling water
TBSW
turbine building service water
TBV
turbine block valve
turbine building ventilation
TBYMS
Technical Bases for Yucca Mountain Standards
TC
temperature controller
transfer canal
T/C
thermocouple
TCA
thermal critical assembly
TCC
Transducer Controls Corporation
TCCC
time current characteristic curve
TC/LD
thermocouple/lead detector
TCM
technical committee meeting
TCP/IP
transmission control protocol/Internet protocol
TCS
telephone conference summary
temporary conditioning station
turbine control system
TCV
temperature control valve
turbine control valve
TD
theoretical density
time delay
transfer dolly
turbine driven
TDAFP
turbine-driven auxiliary feed pump
TDAFW
turbine-driven auxiliary feedwater
TDAFWP
turbine-driven auxiliary feedwater pump
TDC
thermal diffusion coefficient
TDCR
test deficiency change request
TDD
test design description
TDEFWP
turbine-driven emergency feedwater pump
TDF
task deletion form
thermal design flow
TDH
Texas Department of Health
total developed head
total dynamic head
TDI
Transamerica Delaval, Inc.
turbine disk integrity
TDIOG
Transamerica DeLaval, Inc., Owners Group
TDM
time division multiplex
TDMC
Technical Data Management Center (Oak Ridge National Laboratory)
TDN
technology development need
TDP
turbine-driven pump
TDR
technical data report
test deficiency report
time domain reflectometry
TDS
time delay switch
total dissolved solids
TE
temperature element
test exception
thermal expansion
transient event
T/E
thermoelectric
TEAR
training evaluation audit report
TEC
Technology for Energy Corp.
total estimated cost
TECHNICATOME
Société Technique pour l'Energie Atomique (France)
TECO
Toledo Edison Company
TECRO
Taipei Economic and Cultural Representative Office (Taiwan)
TEDE
total effective dose equivalent
TEFC
totally enclosed fan cooled
TEG
thermoelectric generator
TEM
transmission electron microscope
TEMA
Tubular Exchanger Manufacturers Association
TEMAC
Top Event Matrix Analysis Code
TENR
technologically enhanced naturally radioactive
TENRAP
technologically enhanced naturally radioactive product
TEP
Tyrone Energy Park
TER
technical evaluation report
technical exchange report
TES
Teledyne Engineering Services
TFANP
Task Force Against Nuclear Pollution
TFC
thermal fatigue crack
TFE
thermionic fuel element
thin film evaporator
TFM
Treasury Financial Manual
TFS
turbine first stage
TFTR
tokamak fusion test reactor
TG
turbine generator
T/G
turbine generator
TGB
turbine generator building
TGEP
turbine generator emergency power
TGIS
toxic gas isolation system
TGLM
task group lung model
TGS
turbine generator system
TGSCC
transgranular stress-corrosion cracking
TGSS
turbine gland sealing system
TGV
turbine governor valve
T/H
thermal and hydraulic
THCS
temperature of hot-channel sodium
THERP
technique for human error rate prediction
THL
top of heated length
THM
time history model
THPO
Tribal Historic Preservation Officer
THTF
thermal hydraulic test facility
THTR
thorium high-temperature reactor
TI
temperature indicator
temporary instruction
test instruction
transport index
TIA
task interface agreement
TIBB
Tecnomasio Italiano Brown Boveri, SpA (Italy)
TIC
Technical Information Center
temperature-indicating controller
TID
Technical Information Document
technical report designation for the U.S. Atomic Energy Commission
total integrated dose
TIF
task initiation force
task initiation form
TIG
tungsten inert gas
TIP
tactical improvement package
transient in-core probe
traveling in-core probe
traversing in-core probe
TIRGALEX
Technical Integration Review Group for Aging and Life Extension
TIS
temperature-indicating switch
TL
task leader
test load
truck lock
TLA
thin layer activation
TLAA
time-limited aging analysis
TLD
thermoluminescence dosimeter
TLEC
Texas-Louisiana Electric Cooperative
TLLM
temperature and liquid level monitor
TLO
turbine lube oil
TLOFW
total loss of feedwater
TLOS
turbine lube oil system
TLOST
turbine lube oil storage tank
TLP
top load pad
top load plane
TLTA
two-loop test apparatus
TLTM
third-level thermal margin
TLV
threshhold limit value
TM
technical manual
temperature monitor
TMBDB
thermal margin beyond design basis
TMD
transient mass distribution
TMH
trolley-mounted hoist
TMI
Three Mile Island
TMI-1
Three Mile Island Unit 1
TMI-2
Three Mile Island Unit 2
TMIA
Three Mile Island Alert, Inc.
TMI-AP
Three Mile Island Action Plan
TMINS
Three Mile Island Nuclear Station
TMIPO
Three Mile Island Program Office
TM/LP
thermal margin/low pressure
TMPA
Texas Municipal Power Agency
TMR
Teledyne Materials Research
TNA
thermal neutron activation
TNE
TUEC (Texas Utilities Electric Co.) nuclear engineering
TNP
Trojan Nuclear Plant
TNPG
The Nuclear Power Group (United Kingdom)
TNT
trinitrotoluene
TOED
Toledo Edison Co.
TOL
temporary operating license
thermal overload
top
thermal overload protection
transient overpower
topO
trioctylphosphine oxide
topR
Taiwan Open-Pool Reactor
TOS
torque overload switch
TOSS
transient and/or steady state
TP
technical position
test pressure
test procedure
test program
TPA
total-system performance assessment
TP-BAR
tritium-producing burnable absorber rod
TPC
Taiwan Power Company
TPCDF
total plant core damage frequency
TPD
test procedure deviation
TPF
total peaking factor
TPFL
two-phase flow loop
TPM
thermal power monitor
TPPEP
Turkey Point Performance Enforcement Program
TPS
Turkey Point Station
TPSS
turbine plant sampling system
TPTF
two-phase test facility
TQM
total quality management
T&QP
Training and Qualification Plan
TR
technical review
temperature recorder
topical report
tritium recovery
Turkish Reactor
TRA
tubular reactor assembly
TRAP
trip reduction and assessment program (WOG)
TRB
test review board
TRC
technical review committee
The Radiochemical Centre (United Kingdom)
TRE
total rare earths
TREAT
transient reactor test
TRIA
temperature-removable instrument assembly
TRIGA
training reactor and isotopes production, General Atomics
TRIM
targeted regulatory improvement
TRIP
transient response implementing procedure
TRM
Technical Requirements Manual
TRR
test and research reactor
Thailand Research Reactor
TRRT
test results review team
TRS
thermal reactor safety
TRT
technical review team
TRTR
training, research, and test reactor
TRU
transuranic
transuranium
TRUWIP
Transuranic Waste Immobilization Program
TRX
two-region physics critical experiment
TS
technical specification
test specification
treatment system
TSA
tube support assembly
TSABC
technical services as-built coordinator
TSAR
topical safety analysis report
TSC
technical support center
test shipping cask
TSCA
Toxic Substances Control Act
TSCC
Technical Support Coordinating Committee
TSCF
task schedule change form
TSDR
technical services design review
TSF
tower shield facility
tower shielding facility
TSG
technical support guidelines
TSH
temperature switch, high
TSI
Thermal Sciences Inc.
TSIP
Technical Specifications Improvement Program
TSIR
technical specifications interpretation report
TSM
temporary station modification
TSMD
technical services mechanical drafting
TSMDA
test section meltdown accident
TSO
time-sharing option
TSOP
Technical Specifications Optimization Program
TSP
Telecommunications Service Priority
trisodium phosphate
tube support plate
TSPA-VA
total system performance assessment-viability assessment
TSPM
technical surveillance countermeasure
TSPS
tube support plate sleeve
TSR
thermal shock rig
total stress range
tower shielding reactor
TSRG
Technical Specifications Review Group
TSSC
Toxic Substances Strategy Committee
TSV
turbine stop valve
TSW
turbine service water
TT
temperature transmitter
test temperature
turbine trip
TTA
thenyltrifluoroacetone
TTBT
Threshold Test Ban Treaty
TTC
Technical Training Center
test transfer cask
Transportation Technology Center
TTE
thermal transient equipment
TTF
transient time flowmeter
TTFM
transit time flowmeter
TTHE
thermal transient histogram equivalent
TTP
technology transfer program
test transfer port
TTQAP
teletherapy treatment quality assurance program
TTR
thermal test reactor
time to repair
TTS
telecommunications tracking system
time-temperature sensitization
TTV
tenth thickness value
TTWB
turbine trip with bypass
TTY
teletypewriter
TU
Texas Utilities Co.
TUEC
Texas Utilities Electric Co.
TUFCDF
Thorium-Uranium Fuel Cycle Development Facility
TUS
Texas Utilities Services Inc.
TUSI
Texas Utilities Services Inc.
TUV
Technischer Überwachungsverein, e.V. (Germany)
TVA
Tennessee Valley Authority
TVG
time-variable gain
TVO
Teollisuuden Voima Osakeyhtio (Finland)
TVR
Tennessee Valley region
TWC
Texas Water Commission
TWCA
Teledyne Wah Chang Albany
TWFN
Two White Flint North
TWG
test working group
TWRS
tank waste remediation system
TWX
teletypewriter exchange service
TZM
tantalum, zirconium, molybdenum

U

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UAP
uranyl ammonium phosphate
UAT
unit auxiliary transformer
UBAEC
Union of Burma Atomic Energy Centre
UBC
Uniform Building Code
UCL
upper control limit
UCLA
University of California, Los Angeles
UCLR
University of California, Lawrence Radiation Laboratory
UCNI
unclassified controlled nuclear information
UCO
uranium oxicarbide fuel
UCS
Union of Concerned Scientists
UDI
Utility Data Institute
UDRPS
ultrasonic data recording and processing system
UDS
ultimate damage state
UDT
underwater demolition team
UE
Union Electric Co.
UEC
United Engineers and Constructors, Inc.
UE&C
United Engineers and Constructors, Inc.
UEF
upper end fitting
UEL
upper electrical limit
UF
urea-formaldehyde
UFCS
uranium hexafluoride chemical feed station
UFFC
ultrasonic ferroelectrics and frequency control
UFL
upper flammability limit
UFM
unified fracture mechanics
UFR
uranium hexafluoride recovery room
UFSAR
updated final safety analysis report
UFTR
University of Florida Teaching Reactor
UGS
upper group stop
upper guide structure
UHF
ultrahigh frequency
UHI
upper-head injection
UHN
uranyl hexahydrate nitrate
UHS
ultimate heat sink
ultrahigh speed
UHTREX
ultrahigh temperature reactor experiment
UHV
ultrahigh voltage
UI
United Illuminating Co.
UIS
upper internals structure
UISJM
upper internals structure jacking mechanism
U.K.
United Kingdom
UKAEA
United Kingdom Atomic Energy Authority
UKNR
University of Kansas Nuclear Reactor
UL
Underwriters Laboratories, Inc.
upper level
ULD
unit load demand
UMRR
University of Missouri Research Reactor
UMTR
University of Maryland Teaching Reactor
UMTRA
uranium mill tailings remedial action
UMTRAP
Uranium Mill Tailings Remedial Action Program
UMTRCA
Uranium Mill Tailings Radiation Control Act
UN
uranyl nitrate
UNC
United Nuclear Corp.
UND
uranyl nitrate distillate
UNE
Union Electric Co.
UNH
uranyl nitrate hexahydrate
UNHC
uranyl nitrate hexahydrate cell
UNI
United Nuclear Industries, Inc.
UNIPEDE
International Union of Producers and Distributors of Electrical Energy
UNIT
United Illuminating Co.
UNPOC
Utility Nuclear Power Oversight Committee
UNSCEAR
United Nations Scientific Committee on the Effects of Atomic Radiation
UNWMG
Utility Nuclear Waste Management Group
UO
unit operator
UOGF
uranium off-gas filter
UOP
unit operating procedure
UOR
upper oil reservoir
UPI
upper plenum injection
UPL
uranium product loadout
Utah Power & Light Co.
UPM
universal permissive module
UPPS
ultimate plant protection system
UPR
uranium production reactor
UPS
uninterrupted power supply
uninterruptible power supply
uninterruptible power system
UPTF
Upper Plenum Test Facility (Germany)
UPTPS
upper plenum thermal protection structure
UR
user requirement
URA
Universities Research Association
uranium recycle acid
URAEP
University of Rochester Atomic Energy Project
URC
ultrasonic resin cleaner
URD
underground residential distribution
Utility Requirements Document
URFO
uranium recovery field office
uranium recovery field officer
URG
unit review group
URI
unresolved item
URL
Uniform Resource Locator
URTC
Ukrainian Radiation Training Center
USA
upper-shelf analysis/analyses
USAEC
U.S. Atomic Energy Commission
USAR
updated safety analysis report
USAS
United States of America Standards
USASI
United States of America Standards Institute
USBR
U.S. Bureau of Reclamation
U.S.C.
U.S. Code
USCEA
U.S. Council for Energy Awareness (now NEI)
USCG
U.S. Coast Guard
Utility Safety Classification Group
USC&GS
U.S. Coast and Geodetic Survey
USDA
U.S. Department of Agriculture
USE
upper-shelf energy
USEC
U.S. Enrichment Corporation
USGS
U.S. Geological Survey
USI
unresolved safety issue
USNDC
U.S. Nuclear Data Committee
USNRC
U.S. Nuclear Regulatory Commission
USP
upper sequential permissive
USPHS
U.S. Public Health Service
USQ
unreviewed safety question
USQD
unresolved safety question determination
USRP
updated standard review plan
UST
United States Testing Co.
USWB
U.S. Weather Bureau
UT
ultrasonic test
ultrasonic testing
universal time
U/Th
uranium-to-thorium ratio
UT/ISI
ultrasonic inservice inspection
UTM
universal transverse Mercator
UTP
upper tie plate
UTR
university training reactor
UTRR
University of Teheran Research Reactor
UTS
upper tube sheet
UU
ultimate user
UUCP
Unix-to-Unix copy program
UV
undervoltage
UVAR
University of Virginia Reactor
UVR
undervoltage relay
University of Virginia Reactor
UVSC
uranium ventilation scrubber cell
UVTA
undervoltage trip attachment
UWRR
University of Wyoming Research Reactor
UWTR
University of Washington Training Reactor
UXO
unexploded ordnance
UZ
unsaturated zone

V

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v%
volume percent
VA
viability assessment
vital area
Vac
volts alternating current
VAK
Versuchsatomkraftwerk Kahl (Germany)
VAN
value-added network
VANS
vehicular alert and notification system
VAR
volt amperes reactive
VAT
Vulnerability Assessment Team
VBMR
ventilation barrier machine room
VBWR
Vallecitos Boiling Water Reactor
VC
vaporizer concentrate
VCC
ventilated concrete cask
VCD
vendor-certified drawing
VCLF
vertical cask-lifting fixture
VCM
vinyl chloride monomer
VCT
volume control tank
VDA
video graphics adapter
VDC
ventilation duct chase
Vdc
volts direct current
VDEW
Vereinigung Deutscher Elektrizitätswerke (Germany)
VD/OS
vacuum distillation/overflow sampler
VDS
vacuum defueling system
VDTUV
Vereinigung der Technischen Überwachungs-Vereine, e.V. (Germany)
VE
Vitro Engineering
VEC
vertical electrical chase
VEPCO
Virginia Electric and Power Co.
VESIAC
Vela Seismic Information and Analysis Center
VESR
Vallecitos Experimental Superheat Reactor
VF
vaporizer feed
VFTP
ventilation filter testing program
VGCH
vent gas collection header
VGES
variable geometry experimental system
VHES
Vitro Hanford Engineering Service
VHF
very high frequency
VHP
vessel head penetration
VHPT
variable high-power trip
VHTR
very high temperature reactor
VI
vent isolation
VIA
value-impact analysis/analyses
VIMS
Virginia Institute of Marine Science
VIRG
Vessel Integrity Review Group
VISA
vessel integrity simulation analysis
VIV
variable inlet vane
VNSP
vacant nozzle shield plug
VOG
vessel off-gas
VOT
valve opening time
VOTA
vibration open test assembly
VOTES
valve operation test and evaluation system
VP
Alvin W. Vogtle, Jr., Plant - Vogtle Electric Generating Plant
vent-clearing pressure
VPI
vapor phase inhibitor
VQAR
vendor quality assurance representative
VR
volume reduction
VRS
vacuum relief system
volume reduction system
VS
vapor suppression
vendor specific
vessel system
virtual storage
VSC
ventilated storage cask
VSE
vessel steam explosion
VSLO
valve stem leakoff
VSNS
Virgil C. Summer Nuclear Station
VSR
Vallecitos Superheat Reactor
vertical slice review
VSS
vessel support subsystem
VST
valve set point tolerance
VT
vehicular technology
VTEC
Vermont Electric Cooperative, Inc.
VTEP
Vermont Electric Power Co., Inc.
VTO
vital to operations
VTT
Valtion Teknillinen Tutkimuskeskus (Finland)
V&V
verification and validation
VWAC
visual weld acceptance criterion/criteria
VWE
vanadium wire equilibration
VWED
vanadium wire equilibration device
VWI
visual weld inspection
visual weld inspector
VWO
valve wide open
VYGS
Vermont Yankee Generating Station
VYNP
Vermont Yankee Nuclear Power Corp.

W

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W
Westinghouse Electric Corp.
w%
weight percent
WAGR
Windscale Advanced Gas-Cooled Reactor (United Kingdom)
W-AL
Westinghouse-Astronuclear Laboratory
WAMS
Work Action Management System
WAN
wide-area network
WANO
World Association of Nuclear Operators
WAPA
wet annular poison assembly
WAPD
Westinghouse Atomic Power Division
WAPPA
waste package performance assessment
W-ARD
Westinghouse Advanced Reactors Division
WASI
workforce analysis, systems, and information
WB
whole body
WBEP
Watts Bar Engineering Project
WBNP
Watts Bar Nuclear Plant
WBNPP
Watts Bar Nuclear Performance Plan
WBNS
water-boiler neutron source
WBPP
Watts Bar Program Plan
WBPT
Watts Bar Program Team
WBS
work breakdown structure
WC
weather condition
WCA
whole-core accident
WCAP
Westinghouse commercial atomic power
WCF
waste-calcinating facility
WCFO
Walnut Creek Field Office
WCGS
Wolf Creek Generating Station
WCL
Westinghouse Canada Limited
WCNOC
Wolf Creek Nuclear Operating Corp.
WCS
waste compaction station
WD
waste disposal
withdrawn
WDC
waste disposal cask
weld data card
WDS
waste disposal system
WDTRS
Westinghouse development test requirement specification
WEC
Westinghouse Electric Corporation
Wolverine Electric Cooperative
WECAN
Westinghouse Electric computer analysis/analyses
WECST
waste evaporator condensate storage tank
WECT
waste evaporator condensate tank
WEP
water-extended polyester
weld evaluation project
WEPC
Wisconsin Electric Power Co.
WEPCO
Wisconsin Electric Power Co.
WESF
waste encapsulation storage facility
WESI
Westinghouse Energy Systems International (formerly WNI Nuclear)
WESPAC
Westchester People's Action Coalition
WFMC
welding filler material control
WFML
weld filler metal log
WG
waste gas
water gauge
WGC
waste gas compressor
WGDS
waste gas disposal system
WGDT
waste gas decay tank
WGIS
waste containment and isolation strategy
WGS
waste gas system
Waterford Generating Station
WHC
Westinghouse Hanford Company
WHEDL
Westinghouse-Hanford Environmental Development Laboratory
WHO
World Health Organization
WHT
waste holdup tank
WIEB
Western Interstate Energy Board
WIEP
Wisconsin Electric Power Co.
WINB
Western Interstate Nuclear Board
WIPP
waste isolation pilot plant
WIR
weekly information report
WISE
World Information Service on Energy
WISHA
Washington Industrial Safety and Health Act
WISP
workload information and scheduling program
WITS
work item tracking system
WLM
working-level month
WMEC
Western Massachusetts Electric Co.
WMM
wall-mounted manipulator
WMNS
William B. McGuire Nuclear Station
WMO
World Meteorological Organization
WMPC
Wisconsin Michigan Power Co.
WMS
waste management system
work management system
WMT
waste management tank
WNES
Westinghouse nuclear energy system
WNFM
World Nuclear Fuel Market
WNP
Washington Nuclear Project
WNT
waste neutralization tank
waste neutralizing tank
WNYNRC
Western New York Nuclear Research Center
WO
work order
WOFA
Westinghouse optimized fuel assembly
WOG
Westinghouse Owners Group
WOR
weld overlay repair
WP
warm pipe
welding procedure
welding project
work package
work procedure
WPB
waste processing building
WPBCWS
waste processing building chilled water system
WPC
Werner and Pfleiderer Corp.
WPCB
Waste Processing Control Board
WPLC
Wisconsin Power & Light Co.
WPPSS
Washington Public Power Supply System
WPQR
welding procedure qualification record
WPS
warm prestressing
waste processing system
welding procedure specification
WPSC
Wisconsin Public Service Corp.
WQC
water quality certification
WR
Whiteshell Reactor (Canada)
wide range
work request
WRAP
water reactor analysis program
WRC
Welding Research Council
WRGM
wide-range gas monitor
WRM
wide-range monitor
working reference material
W-RM
Westinghouse--Reactor Manufacturer
WRNMS
wide-range neutron monitoring system
WRRR
Walter Reed Research Reactor
WRSR
water reactor safety research
WRT
with respect to
WS
warm shop
WSA
work situation approach
WSCC
Western Systems Coordinating Council
WSCS
waste solidification and compaction station
WSD
working stress design
WSF
waste shipping facility
WSMF
welded-steel moment-resisting frame
WSUOPR
Washington State University Open-Pool Reactor
WT
wall thickness
WTF
waste treatment facility
WTP
water treatment plant
WTR
Westinghouse Test Reactor
WVN
water vapor nitrogen
WVOG
wet vessel off-gas
WW
well water
WWPC
Washington Water Power Co.
WWS
well water system
WWTF
waste water treatment facility
WWW
World Wide Web

X

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XLPE
cross-linked polyethylene
XR
export reactor
XRF
explosion release factor
x-ray fluorescence

Y

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YAE
Yankee Atomic Electric Co.
YAEC
Yankee Atomic Electric Co.
YATA
York Area Transportation Authority
YCNP
Yellow Creek Nuclear Plant
YNHH
Yale-New Haven Hospital
YNPS
Yankee Nuclear Power Station

Z

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ZEA
zero energy assembly
ZEEP
Zero Energy Experimental Pile (Canada)
ZEPHYR
zero energy fast reactor
ZES
zero energy system
ZETA
Zero Energy Thermonuclear Apparatus (United Kingdom)
zero energy thermonuclear assembly
ZETR
Zero Energy Thermal Reactor (United Kingdom)
ZEUS
Zero Energy Uranium System (United Kingdom)
ZGS
zero gradient synchrotron
ZIP
zone improvement plan
ZNP
Zion Nuclear Plant
ZPA
zero period acceleration
ZPMB
zero power mode bypass
ZPPR
zero power plutonium reactor
ZPR
zero power reactor
ZPRF
zero power reactor facility
ZPSS
Zion Probabilistic Safety Study
ZTO
zero time outage
ZWOK
zirconium-water oxidation kinetics
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Page Last Reviewed/Updated Tuesday, December 02, 2014