IR 05000389/1988006

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Responds to NRC 880629 Ltr Re Violations Noted in Insp Rept 50-389/88-06.Corrective Action:Normal/Isolate Switch for Valve HCV-2516 Was Placed in Isolate Position Due to Operators Misreading Control Diagram for Valve
ML17222A370
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 07/29/1988
From: CONWAY W F
FLORIDA POWER & LIGHT CO.
To: LIEBERMAN J
NRC OFFICE OF ENFORCEMENT (OE)
References
EA-88-117, NUDOCS 8808030367
Download: ML17222A370 (5)


Text

~g,ACCELEMTEDDISTRIBUTIONDEMONSTRATIONSYSTEMREGULATORYINFORMATXONDISTRIBUTIONSYSTEM(RIDS)DOCKETg05000389SSIONNBR:8808030367DOC.DATE:88/07/29NOTARXZED-YESCIL:50-389St.LuciePlant,Unit2,FloridaPower&LightCo.AUTH.NAMEAUTHORAFFXLIATIONCONWAY,W.F.FloridaPower&LightCo.RECIP.NAMERECIPIENTAFFILIATIONLIEBERMAN,J.OfcofEnforcement(Post870413)

SUBJECT: RespondstoNRC880629ltrreviolationsnotedinInspRept50-389/88-06.DISTRIBUTIONCODE:IE14DCOPIESRECEIVED:LTRENCLSIZE:TITLE:EnforcementActionNon-2.790-LicenseeResponseNOTES:RECIPIENTIDCODE/NAMEPD2-2LATOURIGNY,ECOPIESLTTRENCL1111RECIPIENTIDCODE/NAMEPD2-2PDCOPIESLTTRENCL11jAINTERNAL:AEOD/DOADEDRONRR/DREP/EPB10NUDOCS-ABSTRACTOELIEBERMAN,JRGN2FILE03AL:LPDRNSIC1111111111111111AEOD/DSP/TPABNRR/DOEA/EAB11NRR/PMAS/ILRB120F-XB01.REGILE02RGN2fD/EPRPBNRCPDR11111111111111TOTALNUMBEROFCOPIESREQUIRED:LTTR18ENCL18 I@BEll2829~1888L-88-31410CFR2.201JamesLieberman,DirectorOfficeofEnforcementU.S.NuclearRegulatoryCommissionAttn:DocumentControlDeskWashington,D.C.20555

DearMr.Lieberman:

Re:St.LucieUnit2DocketNos.50-389InspectionReport389/88-06ReltoNoticeofViolationEA88-117FloridaPower&LightCompanyhasreviewedtheNoticeofViolationdatedJune29,1988.PursuanttotheprovisionsofSection182oftheAtomicEnergyActof1954,asamended,and10CFR2.201,theattachedresponsesupplementsinformationsubmittedbyLicenseeEventReport389/88-03.Verytrulyyours,-;(/1W.F.Con~ySeniorVic'ePresident-NuclearWFC/GRM/cmAttachmentcc:Dr.J.NelsonGrace,RegionalAdministrator,RegionII,USNRCSeniorResidentInspector,USNRC,St.LuciePlantGRM/001.IR~80~q0303gyADOCSSOW99K05000389PDC STATEOFFLORlDA))ss.COUNTYOFPALMBEACH)ThatheisSeniorVicePresident-NuclearofFloridaPower8LightCompany,theLicenseeherein;Thathehasexecutedtheforegoingdocument;thatthestatementsmadeinthisdocumentaretrueandcorrecttothebestofhisknowledge,information,andbelief,andthatheisauthorizedtoexecutethedocumentonbehalfofsaidLicensee./,~areq~/W.FCanvfayiSubscribedandsworntobeforemethisdayof~h<fi,19(~.LCJg7lcd'OTARYPUBLIC,inandfortBeCountyofPalmBeach,StateofFloridaNotaryPublic,StateofRoridaQyimmissionExpiresJune1,1989MyCommissionexpires:aonaodrhture'rf4'<suwnco,rnc VIOLATIONUnit2TechnicalSpecification(TS)3.6.3requiresthatcontainmentisolationvalvesspecifiedinTable3.6-2shallbeoperableinmodes1through4orvariousactionsbetakenwithin4to36hourstocorrectthesituationorplacetheunitincoldshutdown.Contrarytotheabove,valveI-HCV-.2516,acontainmentisolationvalveintheChemicalVolumeandControlSystem(CVCS)letdownline,listedinTSTable3.6-2,wasinoperableinexcessofthetimelimitsspecifiedbytheTSwithouttherequiredactionbeingtaken.Specifically,onMarch13,1988,withthePlantoperatinginMode1at100percentpower,valveI-HCV-2516waselectrically"jumped-open"andeffectivelyrenderedinoperablebypositioningits"normal/isolate"switchtothe"isolate"position.Thisactionbypassedthecontainmentisolationactuation(CIA)andsafety.injectionactuation(SIA)signalstothatvalve.ThisdiscrepancyexisteduntilApril6,1988,whentheconditionwasdiscoveredandthe"normal/isolation"switchreturnedtothe"normal"position.RESPONSE1.FPLconcurswiththeviolation.2.Thenormal/isolateswitchforvalveHCV-2516wasplacedintheisolatepositionduetooperatorsmisreadingthecontrolwiringdiagramforthevalve.TheoperatorsbelievedthattheywereonlyisolatinganerroneousD/Psignalfromavalvedoutpressureindicatingswitch.Theresult,however,wasthatthevalvewasalsoisolatedfromcontainmentisolationactuationsystem(CIAS)andsafetyinjectionactuationsystem(SIAS)signals.Itshouldbenoted,however,thattwoadditionalvalves(V-2515andV-2522)werecapableofisolatingtheletdownline.3~Duringacontrolboardwalkdown,aReactorOperatortraineecheckingthestatusofHCV-2516discoveredthattheswitchapparentlyisolatestheCIASandSIASsignals.HeinformedtheShiftSupervisorofhisconcerns.TheOperationsSupervisorwasnotifiedandthevalvewasdeclaredoutofserviceperTSActionStatement3.6.3.a.(4hourLCO).VerificationoftheactualvalvestatuswasmadebyPlantStaffandajumpertoelectricallyeliminatetheD/Psignalwasinstalled.Thenormal/isolateswitchforHCV-2516wasreturnedtonormal.ThisactionenabledtheCIASandSIASsignalstoHCV-2516andclearedtheActionStatement.AretestoftheclosurecapabilityofHCV-2516onCIASandSIASsignalwassubsequentlyperformed.Additionally,theeventwasreviewedwithresponsibleGRM/001.IR personneltocoverdetailsinvolved.AnOperationsNightOrderwasissuedgivingspecificguidanceregardingtheremovalofanyPlantcomponentfromserviceincludingwhat.typeofassessmentmustbeperformed.4~(a)Administrativecontrolshavebeenestablishedfornormal/isolateswitches.Plantprocedure"AdministrativeControlofValves,Locks,andSwitches"hasbeenrevisedtoincludenormal/isolateswitches.ThiswillrequirethepermissionoftheNuclearPlantSupervisorortheAssistantNuclearPlantSupervisortochangethepositionofnormal/isolateswitchesandtheloggingofanyswitchesthatareoutofnormalposition,eitherintheDeviationLogorinthePlantEquipmentClearanceOrderLog.(b)CautionplacardshavebeenplacedlocallytoremindoperatorsoflossofCIAS/SIASfunctionwhennormal/isolateswitchesareplacedintheisolateposition.(c)AnnunciatorresponseprocedureshavebeenrevisedtoincludereferencetoCIASandSIASsignalswhennormal/isolateswitchesareplacedintheisolateposition.(d)Specifictrainingon'heimpactofrepositioningnormal/isolateswitcheswillbeincorporatedintoLicensedOperatorInitialTrainingandRequalificationTraining.5.Item4dshouldbecompletebyDecember31,1988.Allothercorrectiveactionslistedhavebeencompleted.GRM/001.IR