RG1.156 连接组件的环境鉴定 1987

U.S.NUCLEARREGULATORYCOMMISSIONNovember1987REGULATORYGUIDEOFFICEOFNUCLEARREGULATORYRESEARCHREGULATORYGUIDE1.156(TaskEE404-4)ENVIRONMENTALQUALIFICATIONOFCONNECTIONASSEMBLIESFORNUCLEARPOWERPLANTSA.INTRODUCTIONCriterionIII,DesignControl,ofAppendixB,QualityAssuranceCriteriaforNuclearPowerPlantsandFuelReprocessingPlants,to10CFRPart50,DomesticLicensingofProductionandUtilizationFacilities,requires,amongotherthings,that,whereatestprogramisusedtoverifytheadequacyofspecificdesignfeatures,itincludesuitablequalificationtestingofaprototypeunitunderthemostadversedesignconditions.Section50.49,EnvironmentalQualificationofElectricEquipmentImportanttoSafetyforNuclearPowerPlants,of10CFRPart50requiresthatcertainelectricequipmentimportanttosafetybequalifiedforitsapplicationandspecifiedperformance.Section50.49alsostatesrequirementsforestablishingenvironmentalqualificationmethodsandqualificationparameters.ThisregulatoryguidedescribesamethodacceptabletotheNRCstaffforcomplyingwiththeCommission'sregulationswithregardtotheenvironmentalqualificationofquick-disconnectconnectionassembliesandenvironmentalsealsincombinationwithcablesorwiresasassembliesforserviceinnuclearpowerplants.Theenvironmentalqualificationistoensurethatconnectionassembliescanperformtheirsafetyfunctionsduringandafteradesignbasisevent.TheAdvisoryCommitteeonReactorSafeguardshasbeenconsultedconcerningthisguideandhasconcurredintheregulatoryposition.Anyinformationcollectionactivitiesmentionedinthisregulatoryguidearecontainedasrequirementsin10CFRPart50,whichprovidestheregulatorybasisforthisguide.Theinformationcollectionrequirementsin10CFRPart50havebeenclearedunderOMBClearanceNo.3150-0011.B.DISCUSSIONIEEEStd572-1985,QualificationofClass1EConnectionAssembliesforNuclearPowerGeneratingStations,*publishedinSeptember1985,waspreparedbySubcommittee2,Qualification,oftheNuclearPowerEngineeringCommitteeoftheInstituteofElectricalandElectronicsEngineers(IEEE)andwasapprovedbytheIEEEStandardsBoardonDecember13,1984(andamendedonSeptember25,1987).Thisstandarddescribesbasicproceduresforqualifyingconnectionassemblies(forexample,quickdisconnectconnectionassembliesandenvironmentalsealsincombinationwithcablesasassemblies).GuidanceonseismicqualificationforthisequipmentissuggestedinRegulatoryGuide1.100,SeismicQualcationofElectricandMechanicalEquipmentforNuclearPowerPlants(ProposedRevision2,TaskEE108-5).Section50.49of10CFRPart50definesthreecategoriesofelectricequipmentthatarerequiredtobeenvironmentallyqualified:(1)safety-relatedequipment,(2)nonsafety-relatedequipmentwhosefailurecouldadverselyaffectsafety-relatedequipment,and(3)certainpost-accidentmonitoringequipment.Thisregulatoryguideprovidesanacceptablemethodofqualifyingquick-disconnectconnectionassembliesandenvironmentalsealsincombinationwithcablesorwiresasassembliesforallthreecategories.ofequipment.IEEEStd572-1985containsreferencestoothernationalstandards.ThosestandardsthatarereferencedbutnotendorsedbyNRCareexpectedtobeusedinamannerconsistentwithregulatorypractice.*CopiesmaybepurchasedfromtheInstituteofElectricalandElectronicsEngineersServiceCenter,445HoesLane,P.O.Box1331,Piscataway,NJ08855.USNRCREGULATORYGUIDESTheguidesareissuedinthefollowingtenbroaddivisions:RegulatoryGuidesareIssuedtodescribeandmakeavailabletothepublicmethodsacceptabletotheNRCstaffofimplementing1.PowerReactors6.ProductsspecificpartsoftheCommission'sregulations,todelineatetech-2.ResearchandTestReactors7.TransportationnlquesusedbythestaffInevaluatingspecificproblemsorpostu-3.FuelsandMaterialsFacilities8.OccupationalHealthlatedaccidents,ortoprovideguidancetoapplicants.Regulatory4.EnvironmentalandSiting9.AntitrustandFinancialReviewGuidesarenotsubstitutesforregulations,andcompliancewith5.MaterialsandPlantProtection10.Generalthemisnotrequired.MethodsandsolutionsdifferentfromthosesetoutintheguideswillbeacceptableIftheyprovideabasisforthefindingsrequisitetotheissuanceorcontinuanceofapermitorCopiesofissuedguidesmaybepurchasedfromtheGovernmentlicensebytheCommission.PrintingOfficeatthecurrentGPOprice.InformationoncurrentGPOpricesmaybeobtainedbycontactingtheSuperintendentofThisguidewasissuedafterconsideratlonofcommentsreceivedfromDocuments,U.S.GovernmentPrintingOffice,PostOfficeBoxthepublic.Commentsandsuggestionsforimprovementsinthese37082,Washington,DC20013-7082,telephone[phone]orguidesareencouragedatalltimes,andguideswillberevised,as(202)275-2171.appropriate,toaccommodatecommentsandtoreflectnewinformationorexperience.IssuedguidesmayalsobepurchasedfromtheNationalTechnicalWrittencommentsmaybesubmittedtotheRulesandProceduresInformationServiceonastandingorderbasis.DetailsonthisBranch,DRR,ADM,U.S.NuclearRegulatoryCommission,servicemaybeobtainedbywritingNTIS,5285PortRoyalRoad,Washington,DC20555.Springfield,VA22161.UC.REGULATORYPOSITIONWhenusedinconjunctionwithRegulatoryGuide1.89,EnvironmentalQualificationofCertainElectricEquipmentImportanttoSafetyforNuclearPowerPlants,theproceduresdescribedbyIEEEStd572-1985areacceptabletotheNRCstaffforsatisfyingtheCommission'sregulationspertainingtothe