A strong-walled container housing the core of most types of power reactors. It usually also contains the moderator, neutron reflector, thermal shield, and control rods.
PRA Acceptability describes the ability of a PRA to support risk-informed regulatory decisionmaking. PRA Acceptability is measured in terms of its appropriateness with respect to scope, conformance with the technical elements of a PRA, level of detail, and plant representation.
A type of uncertainty that is due to lack of knowledge.
NRC: Three Mile Island Nuclear Station, Unit 1http://www.nrc.gov/info-finder/reactor/tmi1.html[6/26/2012 9:55:52 AM]Home > Facility Locator > Operating Nuclear Power Reactors by Location or Name > Three Mile Island Nuclear Station, Unit 1Three Mile Island Nuclear Station, ...
Home » Everglades Restoration » About CERP: Brief OverviewAbout CERP: Brief OverviewThe Restudy: Central & Southern Florida Project (C&SF) legislation that passed in1948 was south Florida’s existing water management system. The project providedwater supply, water management an...
laul Goldberg - Re: NY Petition - Neighbors Against GarbagePage I'aul Goldberg - Re: NY Petition - Neighbors Against Garbege Page 1LiU! -From:To:Date:Subject:Cardelia MaupinCharles Cox; Paul GoldbergThu. Jul 24, 2003 5:05 PMRe: NY Petition - Neighbors Against Garbage7>>> Paul ...
Fuel Cycle FacilitiesWhat We RegulateStages of the Nuclear FuelCycleUranium ConversionUranium EnrichmentFuel FabricationHow We RegulateRegulations, Guidance, andCommunicationsLicensingNew Fuel Facility LicensingOversightFire Protection ProgramPublic Involvement in the FuelCycl...
T1. Population Estimates [9] Data Set: 2006 Population Estimates Note: For information on errors stemming from model error, sampling error, and nonsampling error, see: http://www.census.gov/popest/topics/methodology. Prince George's County, Maryland Queen Anne's Count...
The concept that a leaking crack will be detected before it becomes unstable and leads to a rupture.
Attachment 6 to PLA-6076Power Uprate Safety Analysis ReportPUSARNon-ProprietaryAttachment 6 to PLA-6076Power Uprate Safety Analysis ReportPUSARNon-Proprietary VersionPPL Susquehanna LLCTwo North Ninth StreetAllentown, PASusquehanna Steam Electric StationUnits 1 and 2Safety Ana...
One execution or trial of a probabilistic simulation using a set of deterministic input values sampled from probability distributions.
The events across the top of the event tree, which graphically represent the systems needed to keep the plant in a safe state following an initiating event (i.e., a challenge to plant operation). A top event is the starting point of the fault tree, which identifies all of the...
The condition of a nuclear reactor system, in which nuclear fuel no longer sustains a fission chain reaction (that is, the reaction fails to initiate its own repetition, as it would in a reactor's normal operating condition). A reactor becomes subcritical when its fission eve...
Multipliers of the equivalent dose to an organ or tissue used for radiation protection purposes to account for different sensitivities of different organs and tissues to the induction of stochastic effects of radiation (see 10 CFR 20.1003 for complete information).
The primary center of communication and coordination among the NRC, its licensees, State and Tribal agencies, and other Federal agencies, regarding operating events involving nuclear reactors or materials. Located in Rockville, MD, the Operations Center is staffed 24 hours a ...
In the regulatory arena, this term applies to systems, structures, components, procedures, and controls (of a facility or process) that are relied upon to remain functional during and following design-basis events. Their functionality ensures that key regulatory criteria, suc...
A telephone system used by the NRC to receive notifications of significant nuclear events with an actual or potential effect on the health and safety of the public and the environment. Significant events are reported to the NRC by licensees, Agreement States, other Federal age...
The dose equivalent at a tissue depth of 0.007 centimeter (7 mg/cm2), which applies to the external exposure of the skin of the whole body or the skin of an extremity.
Descriptions of Functions and Features of HRA-Informed for Byproduct Materials (Gamma Knife Applications) This description has been developed for readers to understand the content and intended functions of the HRA-Informed Job Aid for Byproduct Materials (Gamma Knife Applicat...
Non-public meetings with NRC senior managers, requested by external stakeholders for general exchanges of information having no direct, substantive connection to any specific NRC regulatory action or decision.
A mathematical representation of a physical process or phenomenon.
SAFEGfARDS E0RNAU017E@@_DEslGNATED ORIGINAL """ fS"x"21"" onom(As_.sm_mezoonsveEasueCHART.OTTE, N.C. 28242MTD/ fjffIIAL B. TI'CKER'// Terzrnoxem2.~,2"January 8, 1985(* * * "TH!S COCUMENT 00NTAIN$ SAFEGUARDS INFOR*4 WO:4.Mr. James P. O'Reilly, Regional AdministratorANY PERSON M...
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...
A systematic method for addressing the risk triplet as it relates to the performance of a complex system to understand likely outcomes, sensitivities, areas of importance, system interactions, and areas of uncertainty. The risk triplet is the set of three questions that the N...
A U.S. environmental law enacted on January 1, 1970. The NRC implements NEPA as part of its regulatory process by evaluating the relevant environmental effects for particular actions. A typical review will include an analysis of impacts to air, water, animal life, vegetation, ...