The U.S. Nuclear Regulatory Commission is in the process of rescinding or revising guidance and policies posted on this webpage in accordance with Executive Order 14151 Ending Radical and Wasteful Government DEI Programs and Preferencing, and Executive Order 14168 Defending Women From Gender Ideology Extremism and Restoring Biological Truth to the Federal Government. In the interim, any previously issued diversity, equity, inclusion, or gender-related guidance on this webpage should be considered rescinded that is inconsistent with these Executive Orders.

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Renewable resources

Natural, but limited, energy resources that can be replenished, including biomass, hydro, geothermal, solar, and wind. These resources are virtually inexhaustible but limited in the amount of energy that is available per unit of time. In the future, renewable resources could ...

Reactor, nuclear

The heart of a nuclear power plant or nonpower reactor, in which nuclear fission may be initiated and controlled in a self-sustaining chain reaction to generate energy or produce useful radiation. Although there are many types of nuclear reactors, they all incorporate certain...

Discussion Items on "KP-FHR Risk-Informed Performance-Based Licensing Basis Development Methodology Topical Report"

Ian Jung 2/5/2020 - 1 - Discussion Items on “KP-FHR Risk-Informed Performance-Based Licensing Basis Development Methodology Topical Report” Docket No. 99902069 1. Purpose (Section 1.1): The TR uses the expression ‘license application” in multiple places as in the follo...

2014-2015 Information Digest Camera-Ready Copy.

MEMORANDUM TO: Chairman Macfarlane Commissioner Svinicki Commissioner Apostolakis Commissioner Magwood Commissioner Ostendorff FROM: Eliot Brenner, Director /RA/ Office of Public Affairs SUBJECT: 2014-2015 INFORMATION DIGEST CAMERA-READY COPY The O...

Draft Request for Additional Information No.92 (969), Revision 0, U.S. EPR Design Certification Application, FSAR Ch. 13.

1 Draft Request for Additional Information No.92 (969), Revision 0 9/26/2008 U. S. EPR Standard Design Certification AREVA NP Inc. Docket No. 52-020 SRP Section: 13.06 - Physical Security Application Section: Tier 1, Chapter 3; Tier 2, Chapter 13.6; U.S. EPR Vital Equipmen...

NRC Follow-up Action to Sept 7 Meeting-Common Cause Failure Definitions.

From: Gutierrez, MauricioTo: FREGONESE, Victor (vxf@nei.org)Cc: Holonich, JosephSubject: NRC Follow-up Action: Provide References on Definition of CCF to NEIDate: Thursday, September 14, 2017 3:56:00 PMAttachments: Common_Cause_Failure_Definitions.pdfVic, At the September 7 me...

Kilo-

A Greek prefix meaning "thousand" in the nomenclature of the metric system. This prefix multiplies a unit by 1000.

Yellowcake

The solid form of mixed uranium oxide, which is produced from uranium ore in the uranium recovery (milling) process. The material is a mixture of uranium oxides, which can vary in proportion and color from yellow to orange to dark green (blackish) depending on the temperature...

Humboldt Bay ISFSI - Final Safety Analysis Report Update, Rev. 9, Except 2.6 Figures.

Humboldt Bay Independent Spent Fuel Storage Installation Pacific Gas and Electric Company Final Safety Analysis Report Update Revision 9 November 2019 NRC Docket No. 72-27 HUMBOLDT BAY ISFSI FSAR UPDATE LIST OF CURRENT PAGES 1 Revision 9 November 2019 Page No. ...

Humboldt Bay ISFSI, Revision 10 to the Updated Final Safety Analysis Report, Except 2.6 Figures.

Humboldt Bay Independent Spent Fuel Storage Installation Pacific Gas and Electric Company Final Safety Analysis Report Update Revision 10 August 2020 NRC Docket No. 72-27 HUMBOLDT BAY ISFSI FSAR UPDATE LIST OF CURRENT PAGES 1 Revision 10 August 2020 Page No. Re...

Probabilistic Risk Assessment and Knowledge Management at the U.S. Nuclear Regulatory Commission.

PROBABILISTIC RISK ASSESSMENT AND KNOWLEDGE MANAGEMENT AT THE U.S. NUCLEAR REGULATORY COMMISSION Suzanne Dennis U.S. Nuclear Regulatory Commission, Washington, D.C. 20555, United States of America, suzanne.dennis@nrc.gov The U.S. Nuclear Regulatory Commission, as a...

Gigawatthour (GWh)

One billion watthours.

Nanocurie

One billionth 10-9 of a curie.

Kilowatt (KW)

A unit of power equivalent to one thousand watts.

Ltr. to J. Ziegler from J. Schlueter: Review of Office of Civilian Radioactive Waste Management Quality Assurance Requirements and Description, DOE/RW-0333P, Revision 13.

February 21, 2003Joseph D. Ziegler, Acting DirectorOffice of License Application and StrategyU.S. Department of EnergyOffice of Repository DevelopmentP.O. Box 364629 M/S 523North Las Vegas, NV 89036-8629SUBJECT: REVIEW OF OFFICE OF CIVILIAN RADIOACTIVE WASTE MANAGEMENTQUALITY ...

A. Gilberston Presentation for 1/16/2020 Public Meeting to Discuss Proposed Revisions to Regulatory Guide (RG) 1.200, "An Approach for Determining the Technical Adequacy of Probabilistic Risk Assessment Results for Risk-Informed Activities"

1Miller, EdFrom: Miller, EdSent: Friday, January 10, 2020 7:41 AMTo: Miller, EdSubject: Material for 1/16/2020 Public Meeting - Anders PresentationAttachments: Anders-presentation-publicmeetinh-1-16-20.pdfAttached is the subject presentation material for the Jan 16, 2020, publ...

Aleatory

A type of uncertainty that is irreducible.

Comment (4) of T. Moser on behalf of Strategic Teaming & Resource Sharing on Draft Regulatory Guide DG-1186 "Measuring, Evaluating, & Reporting Radioactive Material in Liquid & Gaseous Effluents & Solid Waste."

I/Strategic Teaming and Resource Sharing/bus/ z~g2~9~'2~j{j ~T. Moser, ChairmanSTARS Integrated Regulatory Affairs GroupP.O. Box 620, Fulton, Missouri 65251Ref: DG- 1186 and DG-4013STARS-09001February 3, 2009Rulemaking, Directives, and Editing BranchOffice of AdministrationU.S...

Critical organ

That part of the body that is most susceptible to radiation damage under the specific conditions under consideration.

Molecule

A group of atoms held together by chemical forces. A molecule is the smallest unit of a compound that can exist by itself and retain all of its chemical properties.

Metric ton

A unit of measurement equivalent to 1,000 kilograms or about 2,000 pounds.

Uncertainty

Characterized by multiple possible values of inputs and outputs, on which statistics may be created.

Crack coalescence

The combination of two cracks into one.

Surface crack

A crack that is open to the inside of a component and does not penetrate through it.

Comment (42) of NEI on Draft NRC Regulatory Guide DG-1146.

Additional NEI CommentDraft NRC Regulatory Guide DG- 1146"The terms, "existing PSHA database," and "accepted probabilistic seismic hazard studies," appearat various places throughout the text of the draft Regulatory Guide DG - 1146. The draft does notadequately define what is ...