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U.S.NUCLEARREGULATORYCOMMISSIONREGULATORYGUIDEOFFICEOFSTANDARDSDEVELOPMENTREGULATORYGUIDE1.131QUALIFICATIONTESTSOFELECTRICCABLES,FIELDSPLICES,ANDCONNECTIONSFORLIGHT-WATER-COOLEDNUCLEARPOWERPLANTSA.INTRODUCTIONCriterionIII,DesignControl,ofAppendixB,QualityAssuranceCriteriaforNuclearPowerPlantsandFuelReprocessingPlants,to10CFRPart50,LicensingofProductionandUtilizationFacilities,requiresthat,whereatestprogramisusedtoverifytheadequacyofaspecificdesignfeature,itincludesuitablequalificationtestingofaprototypeunitunderthemostadversedesignconditions.ThisregulatoryguidedescribesamethodacceptabletotheNRCstaffforcomplyingwiththeCommission'sregulationswithregardtoqualificationtestingofelectriccables,fieldsplices,andconnectionsforserviceinlight-water-coolednuclearpowe~rplantstoensurethatthecables,fieldsplices,andconnectionscanperformtheirsafety-relatedfunctions.'ThefiretestprovisionsofthisguidedotheInsulatedConductorsCommitteeofthePowerEngineeringSocietyoftheInstituteofElectricalandElectronicsEngineers,Inc.(IEEE),approvedbytheIEEENuclearPowerEngineeringCommittee,andsubsequentlyapprovedbytheIEEEStandardsBoardonFebruary28,1974.ItwasagoovedasanANSIstandard,ANSIN41.10-19751hpril30,1975.Thestandarddelineatesproceedevelopingaprogramforqualificatiofestinggcables,fieldsplices,andconnectiojItplementsIEEEStd323-1974,IEEESt;ioualifyingClassIEEquipmentforNaear,eneratingStations,whichdescribeas'reementsforequipmentqualification.Id'td23-1974isendorsed,withcertainexoion'fRegulatoryGuide1.89,Qualificati'CsIEEEquipmentforNuclearPowerAtlntLnotapplytoquantticationforaninstalledcontlgura-rtl'te-'IEEEStd383-1974wasissued,tion.sabatoriesandcabletestingfacilitiesexr%cdifficultyinproducingaconsistentflamebyusingtheburnerandflamesourceB.DISCUSSIONceduresspecifiedinthestandard.AnIEEEtaskIES3einvestigationintotheproblemwaseventuallyIEEEStd383-1974,IEEEStandardforpeexpandedtoincludeanevaluationofvariousflameTest2ofClassIEElectricCables,Fieldesourcestodetermineifthe70,000Btu/hrflameConnectionsforNuclearPowereeraisourcespecifiedinthestandardwascorrectforuseinStations,3waspreparedbyWorkingGp1offirequalificationtesting.Theinvestigationfoundthatinconsistenciesintheflamesourceweretraceableto'RegulatoryGuide1.29,SeismicDesignClassification,providestheinadvertentuseofincorrectlysizedburnersdurguidancewithregardtoidentifyingelectriccables,fieldsplices,ingcertaintests.andconnectionstowhichthedesirificationrequirementsofAppendixBto10CFRPart501..A2Asusedinthisregulatoryguide'talificationtestandAseriesofteststodetermineifthecorrectflametypetestaresynonymous.sourcehadbeenselectedwasconducted,andthe3CopiesmaybeobtainheItituteofElectricalandresults,asevaluatedbytheIEEEtaskforceandtheElectronicsEngineers,nitedneeringCenter,345East47thNRCstaff,indicatednobasisforchangingthe70,000Street,NewYork,0017.Btu/hr.InvestigationintofiretestingiscontinuingbyRETORYGUIDESCommentsshouldbesenttotheSecretaryoftheCommission,US.NuclearReguRegulatoryGuidesaLdtodescribeandmakeavailabletothepublicmethodslatoryCommission,Washington,D.C.20555,Attention:'DocketingandServiceacceptabletotheNRq.ofimplementingspecificpartsoftheCommission'sBranch.regulations,todelin~eateNluesusedbythestaffinevaluatingspecificproblemsThgudsueiudinteflongenbadivinorpostulatedaccidents,orprovideguidancetoapplicants.RegulatoryGuidesTheguideseissuedinthefollowingtenbroaddivisionsarenotsubstitutesforregulations,andcompliancewiththemisnotrequired.1.PowerReactors6.ProductsMethodsandsolutionsdifferentfromthosesetoutintheguideswillbeaccept-2.ResearchandTestReactors7.Transportationableiftheyprovideabasisforthefindingsrequisitetotheissuanceorcontinuance3.FuelsandMaterialsFacilities8.OccupationalHealthofapermitorlicensebytheCommission.4.EnvironmentalandSitinaoAnti,.....MCommentsandsuggestionsforimprovementsintheseguidesareencouragedatallMaterialsandPlantProtectionetimes,andguideswillberevised,asappropriate,toaccommodatecommentsandRequestsforsinglecopiesofissuedguideswhichmaybereproduced)orforplacetoreflectnewinformationorexperience.However,commentsonthisguide,ifmeetonanautomaticdistributionlistforsinglecopiesoffutureguidesinspecificreceivedwithinabouttwomonthsafteritsissuance,willbeparticularlyusefulindivisionsshouldbemadeinwritingtotheUS.NuclearRegulatoryCommission,evaluatingtheneedforanearlyrevision.Washington,D.C.20555,Attention:Director,DivisionofDocumentControl.August1977IEEEandNRC,andsignificantresultswillbeincorporatedinfuturerevisionsofthisguide.TheflametestscoveredbySection2.5ofthestandardprovideatestprimarilyoftheself-extinguishingtendencyofthecableinsulationmaterial.Thesetestsareconductedwithcablesinaspecificconfigurationandsubjectedtoadefinedfiresource.However,thefireresistanceofcablesmayvarysignificantlyunderdifferentenvironmentalconditions,cableconfigurations,andfiresources.Itshouldberecognizedthattheobjectiveoftheflametestistoprovideguidancefortheselectionoffire-resistantcablesratherthantoestablishtheadequacyoftheinstallationofcablesinanuclearpowerplant.Adequacyofcablesasinstalleddependsonmanyfactors.Mor