ML17223A636

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Forwards Final Response to NRC Bulletin 88-010, Nonconforming Molded-Case Circuit Breakers. One Untraceable Circuit Breaker Installed in Unit 2 Qualified SPDS & Replaced W/Traceable Breaker
ML17223A636
Person / Time
Site: Saint Lucie  NextEra Energy icon.png
Issue date: 05/08/1990
From: SAGER D A
FLORIDA POWER & LIGHT CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
IEB-88-010, IEB-88-10, L-90-161, TAC-71358, TAC-71359, NUDOCS 9005110175
Download: ML17223A636 (10)


Text

AC(FLEA'l'UuuL5i'KLUul'IONuM4OblhilMA'I'jOb!SYSi'j'M~0REGULATORYINFORMATIONDISTRIBUTIONSYSTEM(RIDS)ACCESSIONNBR:9005110175DOC.DATE:90/05/08NOTARIZED:NOFACIL:50-335St.LuciePlant,Unit1,FloridaPower&LightCo.50-389St.Lu&ePlant,Unit2,FloridaPower&LightCo.AUTH.NAMEAUTHORAFFILIATIONSAGER,D.A.FloridaPower&LightCo.RECIP.NAMERECIPIENTAFFILIATIONDocumentControlBranch(DocumentControlDesk)DOCKETPr0500033505000389

SUBJECT:

RespondstoNRCBulletin88-010,"NonconformingMolded-CaseCircuitBreakers."DISTRIBUTIONCODE:IE21DCOPIESRECEIVED:LTRENCL0SIZE:TITLE:BulletinResponse88-10-NonconformingMoldedCseCircus,tBreaers.NOTES:RECIPIENTIDCODE/NAMEPD2-2LANORRIS,JINTERNAL:AEOD/DOANRRDOEA/GCB11NRRGUILLEN,JNRR/DET/EMEB9H3NRR/DOEA/OGCB11NRR/DST8E2NRR/POTAPOVS,URES/DSIR/EIBEXTERNAL:LPDRNSICCOPIESLTTRENCL101111111111111111111111RECIPIENTIDCODE/NAMEPD2-2PDAEOD/DSP/TPABNRRGILL,A.S.NRRSTONE,J.C.NRR/DOEA/OEAB11NRR/DREP/PEPB9DRGN2FILENRCPDRCOPIESLTTRENCL,11'11111111111111.111NOTETOALL"RIDS"RECIPIENIS:PLEASEHELPUSTOREDUCEWASTEtCONTACTTHEDOCUMENI'ONTROLDESK,ROOMPl-37(EXT.20079)TOELIMINATEYOURNAMEFROMDISHUBUTIONLISTSFORDOCUMENISYOUDON'TNEED)TOTALNUMBEROFCOPIES.REQUIRED:LTTR22ENCL21

P.O..l4000,JunoBeech,iL334080420@PLMAY,081990,L-90-16110CFR50.54(f)U.S.NuclearRegulatoryCommissionAttn:DocumentControlDeskWashington,D.C.20555Gentlemen:Re:St.LucieUnits1and2DocketNos.50-335and50-389NRCBulletinNo.88-10NonconformingMolded-CaseCircuitBreakersTACNos.71358and71359NRCBulletinNo.88-10,"NonconformingMolded-CaseCircuitBreakers",issuedNovember22,1988,requestedthatlicenseestakeactionstoprovidereasonableassurancethatmolded-casecircuitbreakers(CBs),includingCBsusedwithmotorcontrollers;purchasedforuseinsafety-relatedapplicationswithoutverifiabletraceabilitytotheCBmanufacturers,performtheirsafetyfunctions.ByletterL-89-120datedApril3,1989,FloridaPower&LightCompany(FPL)submittedapartial,responsetoNRCBulletinNo.88-10.ThepurposeofthissubmittalistoprovideFPL'sresponsetotheremainingrequirementsofthebulletin.ThiscompletesFPL'sresponsetoNRCBulletinNo.88-10.Shouldtherebeanyquestionsaboutthisinformation,contactus.IpleaseVerytrulyyours,D.A.gerVicersidentSt.LiePlantDAS/MSD/gpAttachmentcc:StewartD.Ebneter,RegionalAdministrator,RegionII,USNRCSeniorResidentInspector,USNRC,St.LuciePlant5'0051101755'00508PDRADOCK05000335OPDCanFPLGroupcompany ATTACHMENTNRCBULLETINNo.88-10ReortinReirement:1.AllholdersofoperatinglicensesarerequiredtoprovideawrittenreportbyApril1,1989,that:a~Confirmsthatonlymolded-caseCircuitBreakers(CBs)thatmeetthecriteriaofitem7oftheactionsrequestedarebeingmaintainedasstoredsparesforfutureuseinsafety-relatedapplications.FPLResonseFloridaPower&LightCompany(FPL)providedaresponsetoReportingRequirement1.a.inletterL-89-120datedApril3,1989'eortinReirement:1.b.Summarizesthetotalnumber,manufacturer,modelnumber,andtotheextentpossibletheprocurementchainofthoseCBsthatcouldnotbetracedtotheCBMinitems1and4oftheactionsrequested.ForinstalledCBs,alsoidentifyeachsysteminwhichtheyare/wereinstalled.Zfitem4oftheactionsrequestedhasnotbeencompletedbyApril1,1989,duetotheschedulefortestsinitem3oftheactionsrequested,thisinformationshouldbeupdatedwithin30daysofthecompletionofitem4toaddressthoseadditionalCBsthatcouldnotbetracedtotheCBM.FPLResonseFloridaPower&LightCompany(FPL)providedaresponsetoitem1oftheactionsrequestedinletterL-89-120datedApril3,1989.ForFPL'sresponsetoitem4oftheactionsrequested,refertoReportingRequirement1.c.below.ReortinReirement:1.c.Confirmsthatitems1(2g3I4g56and7oftheactionsrequestedhave.beencompletedorwillbeimplementedasrequested.

ActionReested:1.AlladdressesarerequestedtoperformthefollowingreviewbyMarch>,1989:a~Identifyallmolded-caseCBspurchasedpriortoAugust1,1988,thatarebeingmaintainedasstoredsparesforsafety-related(Class1E)applicationsorcommercialgradeCBsthatarebeingmaintainedasstoredsparesforfutureuseinsafety-relatedapplications;thisincludesCBspurchasedfromaCBMorfromanyothersource.IfthenumberofthesestoredspareCBsislessthan50atanuclearplantsite,thenrandomlyselectCBspurchasedbetweenAugust1,1983andAugust1,1988thathavebeeninstalledinsafety-relatedapplicationsasreplacementsormodificationstoformaminimumsampleof50CBspernuclearplantsite.b.VerifythetraceabilityoftheseCBs.c~Identifythenumber,manufacturer,modelnumber,andtotheextentpossibletheprocurementchainforallthoseCBsidentifiedin(la)thatcannotbetracedtotheCBM.ForinstalledCBs,alsoidentifyeachsysteminwhichtheyare/wereinstalled.FPLResonseFPLprovidedaresponsetoActionsRequested1.a.,1.b.,and1.c.inletterL-89-120datedApril3,1989.ActionReested:2.AllholdersofoperatinglicenseswhoidentifyinstalledCBsperitem1aboveoritem4belowthatcannotbetracedtoaCBMarerequestedtoprepare,within30daysofthecompletionofeachitem,ananalysisjustifyingcontinuedoperationuntilitems1through5oftheactionsrequestedinthisbulletinhavebeencompleted.FPLResonseFollowingFPL'sresponsetoitem1oftheactionsrequested(seeFPLletterL-89-120,datedApril3,1989),anassessmentoftheacceptabilityforuseofallinstalledsafetyrelatedcircuitbreakers(CB)thatwereprocuredunderthesamepurchaseordersasthe22nontraceablestoredspareCBswasperformed(

Reference:

NRCBulletinNo.88-10Supplement1,Position4).TheresultsrevealedoneuntraceableCBwasinstalledin.theSt.LucieUnit2QualifiedSafetyParameterDisplaySystem.ThisbreakerhassincebeenreplacedwithatraceableCBinaccordancewith.thecriteriaofitem7ofthe actionsrequested.Theinformationconcerningthisnontraceablebreaker,asrequestedinitem4.c.oftheactionsrequested,isprovidedinAttachment1(item1).Additionally,seeFPL'sresponsestoitems3,4and5oftheactionsrequestedfortheremaininginformationrequestedinActionRequested2.ActionReested:3.Alladdresseeswhoidentify80percentormoreCBstraceabletotheCBMperitem1abovearerequestedtotest.theCBsthatarenottraceabletotheCBMinaccordancewiththetestprogramdescribedinAttachment1.AnyinstalledCBsthatfailanyofthesetestsshouldbereplacedwithCBsthatmeetthecriteriaofitem7oftheactionsrequestedorCBsthatpassalltestsinaccordancewiththetestingprogramdescribedinAttachment1.Ifmorethan10percentoftheCBstestedfailanyofthetestsdescribedinAttachment1,continuewithitem4;otherwise,proceedtoitem6oftheactionsrequested.HoldersofoperatinglicensesarerequestedtocompletethistestingprogrambeforestartupfromthefirstrefuelingoutagebeginningafterMarch1,1989.Holdersofconstructionpermitsarerequestedtocompletethistestingprogrambeforefuelload.FPLResonseFPLdeterminedthattwenty-two(22)outofonehundredandtwenty-four(124)CBsweremaintainedasstoredspareswhichcouldnotbetracedtotheoriginalCBmanufacturers(seeFPLletterL-89-120,datedApril3,1989).Therefore,FPLhaddeterminedthat80percentormoreofthestoredspareCBsweretraceabletotheCBM.InanNRCmemorandumdatedJanuary5,1989(CharlesE.RossitoStevenA.VargaandGaryMHolahan,"Interpretation/ClarificationofBulletinNo.88-10:NonconformingMolded-CaseCircuitBreakers"),theNRCStaffagreedthattestingofthenontraceablesparesneednotbeperformedprovidedtheutilityperformsBulletinNo.88-10items4and5oftheactionsrequested,regardlessofthetraceabilityresultsofitem1ofthebulletin.FollowingareviewoftheBulletinNo.88-10CBtestprogram,FPLelectednottotestthetwenty-twonontraceableCBs,butinsteadelectedtoperformitems4and5oftheactionsrequestedinaccordancewiththeJanuary5,1989,NRCmemorandum.

ActionReested:4.Alladdresseswhoidentifylessthan80percentoftheCBstraceable-+totheCBMperitem1aboveorwhoidentifyafailurerateofmorethan10percentfortheCBstestedperitem3abovearerequestedtoperformthefollowingactions:a~Identifyallmolded-caseCBsthathave,beenpurchasedbetweenAugust1,1983andAugust1,1988,andinstalledinsafety-relatedapplicationsasreplacementsorinstalledduringmodifications.b.VerifythetraceabilityoftheseCBs.c~Identifythenumber,manufacturer,modelnumber,systeminwhichtheyare/wereinstalled,andtotheextentpossible,theprocurementchainforallthoseCBsidentifiedin(4a)thatcannotbetracedtotheCBM.FPLResonseFPLidentifiedallSt.Lucieplantmolded-caseCBspurchasedbetweenAugust1,1983andAugust1,1988andinstalledinsafety-relatedapplications.TraceabilitytotheoriginalCBmanufacturerhasbeendeterminedforallbutfour(4)CBs.Attachment1liststheinformationrequestedinitem4.c.for'hosefourinstalled(items2-5ofAttachment1)CBswhichwerenottracedtotheoriginalCBmanufacturer.ActionReested:5.AlladdresseeswhoidentifyinstalledCBsthatcannotbetracedtotheCBMperitem4abovearerequestedtoreplacetheseCBswithcomponentsthatmeetthecriteriaofitem7oftheactionsrequestedortotesttheminaccordancewiththeprogramdescribedinAttachment1;CBsthatfailanyofthesetestsshouldbereplacedwithCBsthatmeetthecriteriaofitem7oftheactionsrequestedorCBsthatpassalltestsinaccordancewiththetestprogramdescribedinAttachment1.Holdersofoperatinglicensesarerequestedtoreplaceorto~testatleastone-half,orallifthetotalnumberislessthan75,oftheseinstalledCBsbeforestartupfromthefirstrefuelingoutagebeginningafterMarch1,1989.TheremainingCBsshouldbereplacedortestedbeforestartupfromthesecondrefuelingoutagebeginningafterMarch1,1989.HoldersofconstructionpermitsarerequestedtoreplaceortotesttheseinstalledCBsbeforefuelload.

FPLResonseFPLhaselectedtoreplacethoseCBslistedinAttachment1withbreakersthatmeetthecriteriaofitem7oftheactionsrequested.ThreeofthefivebreakerslistedinAttachment1havealreadybeenreplaced.TheothertwobreakersarescheduledtobereplacedasshowninAttachment1(ReplacementStatus)asrequiredbyBulletinNo.88-10.Forthebreakerstobereplaced,ajustificationforcontinuedoperationforeachbreakerhasbeendevelopedinaccordancewithitem2oftheactionsrequested.ActionReested:6.Informationgeneratedwhileperformingtheactionsrequestedinitems1,2,3,4,and5aboveshouldbedocumentedandmaintainedforaperiodof5yearsafterthecompletionofallrequestedactions.'PLResonseFPLprovidedaresponsetoActionRequested6.inletterL-89-120datedApril3,1989.ActionReested:7Withtheexceptionofactionstakeninresponsetoitems3and5oftheactionsrequestedabove,molded-caseCBsinstalledinsafety-relatedapplicationsafterAugust1,1988shouldbe:a~b.ManufacturedbyandprocuredfromaCBMundera10CFR50,AppendixB,program;orProcuredfromaCBMorotherswithverifiabletraceabilitytotheCBM,incompliancewithapplicableindustrystandards,andupgradedtosafety-relatedbythelicenseeorothersusinganacceptablededicationprogram.TheNRCencouragesaddressestosignificantlyupgradetheirdedicationprogramsthroughajointindustryefforttoensuretheiradequacyandconsistency.TheNRCwillmonitortheseindustryinitiativesandiftheyarenotsufficientornottimely,orifproblemswiththededicationofcommercialgradeequipmentforsafety-relatedusecontinue,theNRCwilltakeappropriateregulatoryactions.

FPLResonseMoldedcaseCBstobeinstalledinsafety-relatedapplicationsaremanufacturedandprocuredfromaCBmanufacturerundera10CFR50,AppendixBprogram.Additionally,statementshavebeenaddedtoprocurementdocumentsforallmoldedcaseCBsrequiringthatcertificationoftraceabilitytothebreakermanufacturerbeprovidedwith,thebreakers.ReortinReirement:2~Allholdersofoperatinglicensesarerequiredtosubmitareportthatsummarizesavailableresultsoftestsconductedinaccordancewithitems3and5oftheactionsrequestedwithin30daysafterstartupfromthefirstandsecondrefuelingobtagesbeginningafterMarch1,1989.ForCBsthatpassthesetests,theonlyinformationrequiredisthenumber,manufacturer,modelnumberandtotheextentpossibletheprocurementchainofCBstested(summaryreportformatisacceptable).ForCBsthatfailthesetest(s)thesereportsshouldindicatethetest(s)andthevaluesoftestparameter(s)atwhichthefailure(s)occurred,aswellasthecorrespondingmanufacturer,modelnumber,andtotheextentpossible,theprocurementchain.FPLResonseAsstatedinresponsetoitem4oftheactionsrequested,FPLelectednottotestthetwenty-twonontraceablebreakers,andinsteadelectedtoperformitems4and5ofactionsrequested.SinceFPLdidnottest,areportthatsummarizestheresultsofthesetestisnotapplicable.

PROCUREMENT1)GE/SolidstateUnknownATTACHMENT1MODELPARTTHFK224150UNITSYSTEMREPLACEMENTSTATUSQualifiedSafetyReplacedParameterDisplay(9/25/89)SystemInverter2),West/CGD*UnknownFB3125L1ABatteryChargerReplaced(1/3/90)3)SQ.D./Whiting*UnknownQOU120FuelCaskCraneReplaced(12/15/89)4)GE/GESCOUnknownTHED136070BreakerFeedsPowerPanel220fromMotorControlCenter2A6ScheduledReplacement(Fall1990)5)West/L&DUnknownQC1030BreakerforLimitScheduledSwitchto2BDCReplacementBusTieBreaker(Fall1990)MotorOperated*Afinaldeterminationonthetraceabilityofthisbreakerwasnotmadesinceatraceablereplacementbreakerwasavailable.7