RG1.151 仪表传感管线 1983

U.S.NUCLEARREGULATORYCOMMISSIONJuly1983REGULATORYGUIDEOFFICEOFNUCLEARREGULATORYRESEARCHREGULATORYGUIDE1.151(TaskIC126-5)INSTRUMENTSENSINGLINESA.INTRODUCTIONSection50.34,ContentsofApplications;TechnicalInformation,of10CFRPart50,DomesticLicensingofProductionandUtilizationFacilities,requires,inpart,thatdesigncriteriabeestablishedforstructures,systems,andcomponentsimportanttosafetythatwillprovidereasonableassurancethatthefacilitycanbeoperatedwithoutunduerisktothehealthandsafetyofthepublic.Criterion1,QualityStandardsandRecords,ofAppendixA,GeneralDesignCriteriaforNuclearPowerPlants,to10CFRPart50requires,inpart,thatstructures,systems,andcomponentsbeerected(installed)toqualitystandardscommensuratewiththeimportanceofthesafetyfunctionstobeperformed.Criterion13,InstrumentationandControl,ofAppendixAto10CFRPart50requires,inpart,thatinstrumentationbeprovidedtoensureadequatesafety.Criterion24,SeparationofProtectionandControlSystems,ofAppendixAto10CFRPart50andSection4.7.3,SingleRandomFailure,ofIEEEStd279-1971require,inpart,thattheinterconnectionoftheprotectionandcontrolsystemsbelimitedsoastoensurethatsafetyisnotsignificantlyimpaired.ThisregulatoryguidedescribesamethodacceptabletotheNRCstaffforcomplyingwiththeCommission'sregulationswithregardtothedesignandinstallationofsafetyrelatedinstrumentsensinglinesinnuclearpowerplants.Thetermsafety-relatedreferstothosestructures,systems,andcomponentsnecessarytoensure(1)theintegrityofthereactorcoolantpressureboundary,(2)thecapabilitytoshutdownthereactorandmaintainitinasafeshutdowncondition,or(3)thecapabilitytopreventormitigatetheconsequencesofaccidentsthatcouldresultinpotentialoffsiteexposurescomparabletotheguidelineexposuresof10CFRPart100.TheAdvisoryCommitteeonReactorSafeguardshasbeenconsultedconcerningthisguideandhasconcurredintheregulatoryposition.AnyguidanceinthisdocumentrelatedtoinformationactivitieshasbeenclearedunderOMBClearanceNo.31500011.B.DISCUSSIONISA-S67.02,Nuclear-Safety-RelatedInstrumentSensingLinePipingandTubingStandardsforUseinNuclearPowerPlants,*waspreparedbyCommitteeSP67-02oftheInstrumentSocietyofAmerica(ISA).ItwasapprovedbytheISANuclearPowerPlantStandardsCommitteeonOctober19,1978,andsubsequentlybytheISAStandardsandPracticesBoardinJune1980.Thestandardprovidesdesign,physicalprotection,andinstallationrequirementsforinstrumentsensinglinepipingandtubingfornuclearpowerplantapplications.ItestablishestheapplicableASMEcoderequirementsandboundariesforthedesignandinstallationofinstrumentsensinglinesthatinterconnectsafety-relatedpipingandvesselswithsafety-relatedinstrumentationandnon-safety-relatedinstrumentation.C.REGULATORYPOSITIONTherequirementsofISA-$67.02,Nuclear-SafetyRelatedInstrumentSensingLinePipingandTubingStandardsforUseinNuclearPowerPlants,1980,provideabasisacceptabletotheNRCstaffforthedesignandinstallationofsafety-relatedinstrumentsensinglinesinnuclearpowerplantssubjecttothefollowing:1.TherequirementsforinstrumentsensinglinesinSection4.1ofISA-$67.02shouldbesupplementedwiththefollowing:Asingleinstrumentsensinglineshouldnotbeusedtoperformbothasafety-relatedfunctionandanonsafety-relatedfunctionunlessitcanbeshownthat:CopiesareavailablefromtheInstrumentSocietyofAmerica,67AlexanderDrive,P.O.Box12277,ResearchTrianglePark,NorthCarolina27709.USNRCREGULATORYGUIDESCommentsshouldbesenttotheSecretaryoftheCommission,U.S.NuclearRegulatoryCommission,Washington,D.C.20555,RegulatoryGuidesareissuedtodescribeandmakeavailabletotheAttention:DocketingandServiceBranch.publicmethodsacceptabletotheNRCstaffofimplementingspecificpartsoftheCommission'sregulations,todelineatetech-Theguidesareissuedinthefollowingtenbroaddivisions:niquesusedbythestaffinevaluatingspecificproblemsorpostulatedaccidentsortoprovideguidancetoapplicants.Regulatory1.PowerReactors6.ProductsGuidesarenotsubstitutesforregulations,andcompliancewith2.ResearchandTestReactors7.Transportationthemisnotrequired.Methodsandsolutionsdifferentfromthoseset3.FuelsandMaterialsFacilities8.OccupationalHealthoutintheguideswillbeacceptableiftheyprovideabasisforthe4.EnvironmentalandSiting9.AntitrustandFinancialReviewfindingsrequisitetotheissuanceorcontinuanceofapermitor5.MaterialsandPlantProtection10.GenerallicensebytheCommission.CopiesofissuedguidesmaybepurchasedatthecurrentGovernmentThisguidewasissuedafterconsiderationofcommentsreceivedfromPrintingOfficeprice.Asubscriptionserviceforfutureguidesinspethepublic.CommentsandsuggestionsforimprovementsinthesecificdivisionsisavailablethroughtheGovernmentPrintingOffice.guidesareencouragedatalltimes,andguideswillberevised,asInformationonthesubscriptionserviceandcurrentGPOpricesmayappropriate,toaccommodatecommentsandtoreflectnewinforma-beobtainedbywritingtheU.S.NuclearRegulatoryCommission,tionorexperience.Washington,D.C.20555,Attention:PublicationsSalesManager.a.Thefailureofthecommonsensinglinewouldnotsimultaneously(1)causeanactioninanon-safetyrelatedsystemthatresultsinaplantconditionrequiringprotectiveactionand(2)alsopreventproperactionofaprotectionsystemchanneldesignedtoprotectagainstthecondition;orb.