RG1.183 评价设计基准事故的另一种辐射源项 2000

RegulatoryguidesareissuedtodescribeandmakeavailabletothepublicsuchinformationasmethodsacceptabletotheNRCstaffforimplementingspecificpartsoftheNRC’sregulations,techniquesusedbythestaffinevaluatingspecificproblemsorpostulatedaccidents,anddataneededbytheNRCstaffinitsreviewofapplicationsforpermitsandlicenses.Regulatoryguidesarenotsubstitutesforregulations,andcompliancewiththemisnotrequired.MethodsandsolutionsdifferentfromthosesetoutintheguideswillbeacceptableiftheyprovideabasisforthefindingsrequisitetotheissuanceorcontinuanceofapermitorlicensebytheCommission.Thisguidewasissuedafterconsiderationofcommentsreceivedfromthepublic.Commentsandsuggestionsforimprovementsintheseguidesareencouragedatalltimes,andguideswillberevised,asappropriate,toaccommodatecommentsandtoreflectnewinformationorexperience.WrittencommentsmaybesubmittedtotheRulesandDirectivesBranch,ADM,U.S.NuclearRegulatoryCommission,Washington,DC20555-0001.Regulatoryguidesareissuedintenbroaddivisions:1,PowerReactors;2,ResearchandTestReactors;3,FuelsandMaterialsFacilities;4,EnvironmentalandSiting;5,MaterialsandPlantProtection;6,Products;7,Transportation;8,OccupationalHealth;9,AntitrustandFinancialReview;and10,General.Singlecopiesofregulatoryguides(whichmaybereproduced)maybeobtainedfreeofchargebywritingtheDistributionServicesSection,U.S.NuclearRegulatoryCommission,Washington,DC20555-0001,orbyfaxto(301)415-2289,[e-mail]ideareavailableontheinternetatNRC’shomepageat(DraftwasissuedasDG-1081)ALTERNATIVERADIOLOGICALSOURCETERMSFOREVALUATINGDESIGNBASISACCIDENTSATNUCLEARPOWERREACTORSiiAVAILABILITYINFORMATIONSinglecopiesofregulatoryguides,bothactiveanddraft,anddraftNUREGdocumentsmaybeobtainedfreeofchargebywritingtheReproductionandDistributionServicesSection,OCIO,USNRC,Washington,DC20555-0001,[e-mail],orbyfaxto(301)415-2289.ActiveguidesmayalsobepurchasedfromtheNationalTechnicalInformationServiceonastandingorderbasis.DetailsonthisservicemaybeobtainedbywritingNTIS,5285PortRoyalRoad,Springfield,VA22161.ManyNRCdocumentsareavailableelectronicallyinourReferenceLibraryonourwebsite,(ADAMS,orPARS,documentsystem)atthesamesite.CopiesofactiveanddraftguidesandmanyotherNRCdocumentsareavailableforinspectionorcopyingforafeefromtheNRCPublicDocumentRoomat2120LStreetNW.,Washington,DC;thePDR’smailingaddressisMailStopLL-6,Washington,DC20555;telephone[phone]or(800)397-4209;fax[phone];[e-mail],P.O.Box37082,Washington,DC20402-9328(telephone[phone]);orfromtheNationalTechnicalInformationServicebywritingNTISat5285PortRoyalRoad,Springfield,VA22161;telephone[phone];orontheinternetat’smailingaddressisMailStopLL-6,Washington,DC20555;telephone[phone]or(800)397-4209;fax[phone];[e-mail]........................................................1B.DISCUSSION...........................................................2C.REGULATORYPOSITION................................................41.IMPLEMENTATIONOFAST..............................................41.1GenericConsiderations..............................................41.2ScopeofImplementation.............................................61.3ScopeofRequiredAnalyses..........................................71.4RiskImplications..................................................101.5SubmittalRequirements.............................................101.6FSARRequirements...............................................112.ATTRIBUTESOFANACCEPTABLEAST..................................113.ACCIDENTSOURCETERM.............................................123.1FissionProductInventory...........................................123.2ReleaseFractions..................................................133.3TimingofReleasePhases...........................................143.4RadionuclideComposition..........................................153.5ChemicalForm....................................................153.6FuelDamageinNon-LOCADBAs....................................164.DOSECALCULATIONALMETHODOLOGY................................164.1OffsiteDoseConsequences..........................................164.2ControlRoomDoseConsequences....................................174.3OtherDoseConsequences...........................................194.4AcceptanceCriteria................................................195.ANALYSISASSUMPTIONSANDMETHODOLOGY.........................205.1