RG1.187 10 CFR 50.59实施指南－变更、试验和实验 2000

1CopiesareavailableforinspectionorcopyingforafeefromtheNRCPublicDocumentRoomat11555RockvilleMD;thePDR’smailingaddressisMailStopPDR,Washington,DC20555;telephone[phone]or(800)397-4209;fax[phone];[e-mail]dtodescribeandmakeavailabletothepublicsuchinformationasmethodsacceptabletotheNRCstaffforimplementingspecificpartsoftheNRC’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’shomepage,alongwithotherrecentlyissuedguides,AccessionNumberML003759710.U.S.NUCLEARREGULATORYCOMMISSIONNovember2000REGULATORYGUIDEOFFICEOFNUCLEARREGULATORYRESEARCHREGULATORYGUIDE1.187(DraftwasissuedasDG-1095)GUIDANCEFORIMPLEMENTATIONOF10CFR50.59,CHANGES,TESTS,ANDEXPERIMENTSA.INTRODUCTIONIn10CFRPart50,“DomesticLicensingofProductionandUtilizationFacilities,”Section50.59,“Changes,TestsandExperiments,”containsrequirementsfortheprocessbywhichlicenseesmaymakechangestotheirfacilitiesandproceduresasdescribedinthesafetyanalysisreport,withoutpriorNRCapproval,undercertainconditions.Therulewaspromulgatedin1962andrevisedin1968.Asaresultoflessonslearnedfromoperatingexperienceandotherinitiativesrelatedtocontrolofconformanceoffacilitieswiththeirfinalsafetyanalysisreport(FSAR)descriptions,theNRCdeterminedthatadditionalactionwasnecessarytoprovideclarityandconsistencyinimplementationoftherule.ThestaffrecommendedspecificactionsinSECY-97-205,“IntegrationandEvaluationofResultsfromRecentLessons-LearnedReviews,”1datedSeptember10,1997.InastaffrequirementsmemorandumdatedMarch24,1998,1theCommissiondirectedthestafftoinitiaterulemakingtorevisetherequirementsof10CFR50.59toclarifytherequirementsandtoallowchangesinvolvingonly“minimalincreases”inprobabilityorconsequencestobemadewithoutpriorNRCapproval.TheproposedrulewaspublishedforcommentinOctober1998.Followingconsiderationofpubliccomments,onOctober4,1999(64FR53582),theNRCissuedafinalrevisionto10CFR50.59that2CopiesofNEI96-07areavailablethroughNRC’swebsite,’sElectronicReadingRoom,underAccessionNumberML003771157.CopiesareavailableforinspectionorcopyingforafeefromtheNRCPublicDocumentRoomat11555RockvillePike,Rockville,MD;thePDR’smailingaddressisWashington,DC20555;telephone[phone]or(800)397-4209;fax[phone];[e-mail].1.187-2becomeseffective90daysafterapprovalofregulatoryguidance,whichiscontainedinthisRegulatoryGuide1.187.ThetextoftherevisedruleiscontainedinAppendixAtothisregulatoryguideforconvenience.Theinformationcollectionscontainedinthisregulatoryguidearecoveredbytherequirementsof10CFRPart50,whichwereapprovedbytheOfficeofManagementandBudget,approvalnumber3150-0011.IfameansusedtoimposeaninformationcollectiondoesnotdisplayacurrentlyvalidOMBcontrolnumber,theNRCmaynotconductorsponsor,andapersonisnotrequiredtorespondto,theinformationcollection.B.DISCUSSIONOBJECTIVETheobjectivesof10CFR50.59aretoensurethatlicensees(1)evaluateproposedchangestotheirfacilitiesfortheireffectsonthelicensingbasisoftheplant,asdescribedintheFSAR,and(2)obtainpriorNRCapprovalforchangesthatmeetspecifiedcriteriaashavingapotentialimpactuponthebasisforissuanceoftheoperatinglicense.Thisregulatoryguide,throughitsendorsementofaguidelinedocumentforlicensees,providesguidanceoncomplyingwiththerevisedrequirementsof10CFR50.59.DEVELOPMENTOFINDUSTRYGUIDELINE,NEI96-07Followingpublicationoftherevisedrule,theNuclearEnergyInstitute(NEI)submittedaguidancedocumentfortheimplementationof10CFR50.59andrequestedNRCendorsementthrougharegulatoryguide.FollowingaseriesofmeetingsbetweenNEIandtheNRC,arevisedversionoftheguidancedocumentwassubmittedbyNEIonFebruary22,2000.TheNRCpublishedforpubliccommentaDraftRegulatoryGuide,DG-1095,whichendorse