RG1.192 ASME OM规范的运行和维修规范案例可接受性 2003

Thisguidewasissuedafterconsiderationofcommentsreceivedfromthepublic.Commentsandsuggestionsforimprovementsintheseguidesareencouragedatalltimes,andguideswillberevised,asappropriate,toaccommodatecommentsandtoreflectnewinformationorexperience.WrittencommentsmaybesubmittedtotheRulesandDirectivesBranch,ADM,U.S.NuclearRegulatoryCommission,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’swebsiteat’shomepage,alongwithotherrecentlyissuedguides,AccessionNumberML030730430.U.S.NUCLEARREGULATORYCOMMISSIONJune2003REGULATORYGUIDEOFFICEOFNUCLEARREGULATORYRESEARCHREGULATORYGUIDE1.192(DraftwasissuedasDG-1089)OPERATIONANDMAINTENANCECODECASEACCEPTABILITY,ASMEOMCODEA.INTRODUCTIONGeneralDesignCriterion(GDC)1,“QualityStandardsandRecords,“ofAppendixA,“GeneralDesignCriteriaforNuclearPowerPlants,”to10CFRPart50,“DomesticLicensingofProductionandUtilizationFacilities,”requires,inpart,thatstructures,systems,andcomponentsimportanttosafetybedesigned,fabricated,erected,andtestedtoqualitystandardscommensuratewiththeimportanceofthesafetyfunctionstobeperformed.Wheregenerallyrecognizedcodesandstandardsareused,Criterion1requiresthattheybeidentifiedandevaluatedtodeterminetheirapplicability,adequacy,andsufficiencyandbesupplementedormodifiedasnecessarytoensureaqualityproductinkeepingwiththerequiredsafetyfunction.ProvisionsoftheAmericanSocietyofMechanicalEngineers(ASME)BoilerandPressureVessel(BPV)Codehavebeenusedsince1971asonepartoftheframeworktoestablishthenecessarydesign,fabrication,construction,testing,andperformancerequirementsforstructures,systems,andcomponentsimportanttosafety.ASMEstandardscommitteesdevelop,amongotherthings,improvedmethodsfortheconstruction,inserviceinspection(ISI),andinservicetesting(IST)ofASMEClass1,2,3,MC(metalcontainment)andCC(concretecontainment)nuclearpowerplantcomponents.AbroadspectrumofstakeholdersparticipatesintheASMEprocess,whichhelpstoensurethatthevariousinterestsareconsidered.TheNRChascommittedthroughitsStrategicPlantouseconsensusstandardstoincreasepublicinvolvementintheNRC’sregulatorydevelopmentprocess,consistentwiththeprovisionsofPublicLaw104-113,theNationalTechnologyandTransferActof1995,andOfficeofManagementandBudget(OMB)CircularA-119,“FederalParticipationintheDevelopmentandUseofVoluntaryConsensusStandardsandConformityAssessment.”TofurthertheNRC’scommitmentintheStrategicPlanandbecauseASMECodeprovisions1CopiesmaybeobtainedfromtheAmericanSocietyofMechanicalEngineers,ThreeParkAvenue,NewYork,NY10016-5990.Phone[phone];fax[phone];(OM)CodeCases.In1990,theASMEpublishedtheinitialeditionoftheOMCode,whichprovidesrulesforISTofpumpsandvalves.TheOMCodewasdevelopedandismaintainedbytheASMECommitteeonOperationandMaintenanceofNuclearPowerPlants(ASMEOMCommittee).TheOMCodewasdevelopedinresponsetotheASMEBoardonNuclearCodesandStandardsdirectivethattransferredresponsibilityfordevelopmentandmaintenanceofrulesfortheISTofpumpsandvalvesfromtheASMESectionXISubcommitteeonNuclearInserviceInspectiontotheASMEOMCommittee.TheASMEintendedtheOMCodetoreplaceSectionXIrulesforISTofpumpsandvalves,andtheSectionXIrulesforISTofpumpsandvalvesthathadbeenincorporatedbyreferenceintoNRCregulationshavebeendeletedfromSectionXI.TheNRCendorsedtheOMCodeforthefirsttimeinanamendmentto10CFR50.55apublishedonSeptember22,1999(64FR51370).Section50.55a(f),“InserviceTestingRequirements,”requires,inpart,thatClass1,2,and3componentsandtheirsupportsmeettherequirementsofthe“CodeforOperationandMaintenanceofNuclearPowerPlants,”1oftheASMEOMCodeorequivalentqualitystandards.TheASMEpublishesaneweditionoftheOMCodeeverythreeyears,andnewaddendumeveryyear.ThelatesteditionsandaddendaoftheOMCodethathavebeenapprovedforusebytheNRCarereferencedin10CFR50.55a(b).TheASMEalsopublishesOMCodeCasesyearly.CodeCasesprovidealternativesdevelopedandapprovedbyASMEorexplaintheintentofexistingCoderequirements.ThisregulatoryguideidentifiestheCodeCasesthathavebeendeterminedbytheNRCtobeacceptablealternativestoapplicablepartsoftheOMCode.Inthepast,theacceptabilityofCodeCasesrelatedtoSectionXIrulesforISTofpumpsandvalveswereaddressedinRegulatoryGuide1.147,“InserviceInspectionCodeCaseAcceptability,ASMESectionXI,Division1.”WiththeendorsementoftheOMCode,theNRCdeterminedthatitwasappropriatetodevelopthisnewguideforendorsementofCodeCasesrelatedtotheOMCode.Th