ML17309A807
| ML17309A807 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 12/04/1995 |
| From: | SAGER D A FLORIDA POWER & LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML17228B347 | List: |
| References | |
| L-95-320, NUDOCS 9512110297 | |
| Download: ML17309A807 (35) | |
Text
PRIGRITY3(ACCELERATEDRIDSPROCI'.SSIiGREGULATORYINFORMATIONDISTRIBUTIONSYSTEM(RIDS)ACCESSIONNBR:9512110297DOC.DATE:95/12/04NOTARIZED:NODOCKETNFACIL:50-389St.LuciePlant,Unit2,FloridaPower&LightCo.05000389AUTH.NAMEAUTHORAFFILIATIONSAGER,D.A.FloridaPower&LightCo.RECIP.NAMERECIPIENTAFFILIATIONDocumentControlBranch(DocumentControlDesk)
SUBJECT:
ForwardsRev0toPlantAdministrativeProcedure2-0010024,"InserviceTestingProgramforPumps&Valves."DISTRIBUTIONCODE:A047DCOPIESRECEIVEDLTRENCLSIZE:TITLE:ORSubmittal:Inservice/Testing/RelieffromASMCode-GL-89-04/NOTESRECIPIENTIDCODE/NAMEPD2-1LANORRIS,JINTERNAL:ACRS01EEMCBNUDOCS-ABSTRACTRES/DET/EMMEBEXTERNAL:LITCOANDERSONNRCPDRCOPIESLTTRENCL111160111111111111RECIPIENTIDCODE/NAMEPD2-1PDAEOD/SPD/RABNRR/DE/ECGBNRR/DE/EMEBOGC/HDS3RES/DSIR/EIBNOACCOPIESLTTRENCL11111111101111NOTETOALL"RIDS"RECIPIENTS:PLEASEHELPUSTOREDUCEiVKSTE!CONTACTI'IIEDOCL'i!ENTCONTROLDESk,ROOMPl.37(EXT.504.~0S3)TOELIXI!NATEYOL"RiAXILPl<OilDISTRIBUTIONLISTSI'ORDOCLMEN'I'SYOL'ON"I'II~D!TOTALNUMBEROFCOPIESREQUIRED:LTTR21ENCL14 FloridaPower&LightCompany,P.O.Box128,FortPierce,FL34954-0128December4,1995r,-95-32010CFR50.410CFR50.55aU.S.NuclearRegulatoryCommissionAttn:DocumentControlDeskWashington,D.C.20555RE:St.LucieUnit2DocketNo.50-389In-ServiceTestProgram-Revision2SecondTen-YearIntervalResonsetoSafetEvaluation0enItemsOnMay2,1994,NRCissuedasafetyevaluation(SE)onthesecondten-yearintervalin-servicetest(IST)program,Revision0,forSt.LucieUnit2.IncludedwiththeNRCSEwasacopyoftheNRCcontractor'stechnicalevaluationreport(TER).Forcertainreliefrequests,implementationwasgranted,authorized,orapprovedasacceptableprovidedtheactionitemsoranomaliesidentifiedinSection5oftheTERwereaddressedwithinoneyearofthedateoftheSEorbytheendofthenextrefuelingoutage,whicheverwaslater.Attachment1providesaresponseorclarificationtoeachTERactionitem.SeveraloftheitemsidentifiedintheTERwerepreviouslyaddressedinRevision1oftheISTprogramwhichwassubmittedtotheNRCbyFPLletterL-94-212datedAugust22,1994.ThisrevisionoftheUnit2secondten-yearintervalISTprogramhasbeenissuedasplantadministrativeprocedure,AP2-0010024Revision0.Acopyofthisprocedureisenclosedforyourinformation.Pleasecontactusifthereareanyquestionsaboutthissubmittal.Verytrulyyours,D.A.ViceSt.LgeresidentiePlantDAS/GRMcc:StewartD.Ebneter,RegionalAdministrator,RegionII,USNRCSeniorResidentInspector,USNRC,St.LuciePlantADGCKpgpp()pBpPDRanFPLGroupcompany h
St.LucieUnit2DocketNo.50-389In-ServiceTestProgram-Revision2SecondTen-YearIntervalResponsetoSafetyEvaluationOpenItemsIn-ServiceTestProgramRevision2SecondTen-YearIntervalResponsetoNRCSafetyEvaluationOpenItems12/04/95....9512110297 BACKGROUNDOnSeptember15,1992,FPLletterL-92-247transmittedRevision2ofthefirstten-yearintervalISTprogramtotheNRC.ThisrevisionwasacompleterevisionoftheprogramtoincorporatetheguidanceofGenericLetter89-04,GuidanceondevelopingAcceptableInserviceTestingPrograms.OnAugust3,1993,FPLletterL-93-184transmittedRevision0ofthesecondten-yearintervalISTprogramtotheNRC.Thesecondten-yearintervalbeganonAugust8,,1993.OnAugust23,1993,NRCissuedthesafetyevaluation(SE)onRevision2ofthefirstten-yearintervalISTprogram.ThisSEincludedacopyoftheNRCcontractor'stechnicalevaluationreport(TER).Section4oftheTERincludedactionitemswhichtheNRCrequestedFPLtoaddresswithinoneyearofthedateoftheSEorthenextrefuelingoutagewhicheverwaslater.OnAugust22,1994,FPLletterL-94-212transmittedRevision1ofthesecondten-yearintervalISTprogramtoaddressNRCopenitemsidentifiedintheAugust23,1993SEandNRCcontractor'sTER.Theseopenitemswerecarriedforwardfromthefirstten-yearintervalISTprogram.OnMay2,1994,theNRCissuedtheSEforRevision0ofthesecondten-yearintervalISTprogram.IncludedwiththeNRCSEwasacopyoftheNRCcontractor'stechnicalevaluationreport(TER).Forcertainreliefrequests,implementationwasgranted,authorized,orapprovedasacceptableprovidedtheactionitemsoranomaliesidentifiedinSection5oftheTERwereaddressedwithinoneyearofthedateoftheSEorbytheendofthenextrefuelingoutage,whicheverwaslater.SeveraloftheseitemswerepreviouslyaddressedinRevision1ofthesecondten-yearintervalISTprogram.Thissubmittalprovidesaresponsetotheremainingactionitemsandanomalies.TherecommendedactionsfromeachsubpartoftheTERSection5havebeenlistedbelowalongwiththeSt.Lucieresponse.ForitemswhichduplicatedopenitemsfromtheAugust23,1993NRCSE,andwhichwerepreviouslyaddressedinRevision1ofthesecondten-yearintervalISTprogramonlyacrossreferenceisprovided.TERSection5.1NRCRecommendedAction:TheISTProgramdoesnotincludeadescriptionof:howthecomponentswereselected,howtestingrequirementswereidentifiedforeachcomponent,orthesafetyfunctionofthevalves.ThereviewperformedforthisTERdidnotincludeverificationthatallpumpsandvalveswithinthescopeof10CFR50.55aandSectionXIarecontainedintheISTProgram,anddidnotensurethatall 0
applicabletestingrequirementshavebeenidentified.Thelicenseeisrequested.toincludethisinformationintheISTProgram.Theprogramshoulddescribethedevelopmentprocess,suchasalistingofthedocumentsused,themethodofthebasisforcategorizingvalves,andthemethodorprocessusedformaintainingtheprogramcurrentwithdesignmodificationsorotheractivitiesperformedunder10CFR50.59.Additionally,foreachinterval,thelicenseeshouldmaintainanaccuratestatusofthereliefrequestsincludingtheirrevisionandNRCapproval.St.LucieResponse:Thisaction"itemisidenticaltoitem4.1oftheNRCSEissuedAugust23,1993.FPLrespondedtothisactionitemintheresponsetothepreviousSEandincorporatedthechangesintoRevision1ofthesecondten-yearintervalISTprogramwhichwastransmittedbyFPLletter,L-94-212datedAugust22,1994.NRCRecommendedAction:Thelicenseehasdeletedthedieselairstartandfueloil,andinstrumentairsystemfromtheISTProgram.ThelicenseeexplainsinthesummaryofchangesbetweenRevision2oftheFirstIntervaltoRevision0ofthe,SecondIntervalthatthesesystemsarenotrequiredtobebuilttoASMEClass1,2,or3standardsperRegulatoryGuide1.26,but"werebuilttoClassstandardsattheoptionofFPL.InaccordancewithIWA-1300(e)(sic),includingthepumpsandvalvesinthesesystemsintheISTprogramwasattheoptionofFPLandnotarequirement.ParagraphIWA-1320(e)statesthat"IfsystemssafetycriteriapermitasystemtobenonnuclearsafetyClassandanOwneroptionallyclassifiesandconstructsthatsystem,oraportionthereof,toClass2or3requirements,theapplicationoftherulesof(a)aboveisattheoptionoftheOwnerandisnotarequirementofthisDivision."Section3.2.2oftheFSAR,however,statesthatthedieselsystemsaresafety-relatedQualityGroupCcomponentsandarerequiredtobebuilttoSectionIII,Class3requirements.ComponentswereclassifiedpertheFSARinaccordancewithANSIN18.2,aswellasRegulatoryGuide1.26.TheregulationsrequirepumpsandvalvesclassifiedbytheOwnerasClass1,2,or3tobetestedinaccordancewithSectionXI.TheregulationsdonotlimitthescopeoftheISTprogramtoonlythosesystemsdiscussedinRegulatoryGuide1.26.TheISTprogramscopeshouldbeconsistentwiththeclassificationofcomponentsinthesafetyanalysisreport.TheISTProgramorFSARshouldberevisedaccordingly.St.LucieResponse:Thedieselairstartandfueloil,andinstrumentairsystemswerepreviouslyintheISTprogrambecausetheywerebuiltandaremaintainedtoQualityGroupBandCrequirements.Additionally,FSARTable3.2-1liststhedieselfueloilsystemasQualityGroupC(ASMEClass3).However,theseclassificationswerepreviously consideredasoptionalupgradessinceRegulatoryGuide1.26doesnotrequirethesesystemstobeincludedinQualityGroupsA,B,orC.RegulatoryGuide1.26isthegoverningdocumentforsystemQualityGroupclassificationssinceFSARSection3.2.2statesthat"SystemsafetyclassificationsanddesignandfabricationrequirementsmeettheintentofRegulatoryGuide1.26,QualityGroupClassificationsandStandardsforWater-,Steam-,andRadioactive-Waste-ContainingComponentsofNuclearPowerPlants,February1976(R3)."ThesesystemsdonotrequiretestingpertheCodesinceParagraphIWA-1320.(e)statesthat"IfsystemssafetycriteriapermitasystemtobenonnuclearsafetyClassandanOwneroptionallyclassifiesandconstructsthatsystem,oraportionthereof,toClass2or3requirements,theapplicationoftherulesof(a)isattheoptionoftheOwnerandnotarequirementofthisDivision."Inotherwords,thosesystemswhichwereconstructedtoClass2or3attheoptionoftheOwnerdonotfallunderthescopeofSectionXI,andthereforearenotrequiredtobetestedtotheCodestandards.ThedieselairstartandfueloilsystemwerereviewedbyownerengineeringevaluationtoconfirmthattheclassificationasQualityGroupCwasaresultofowneroptionalupgrade.TheevaluationconcludedthatthiswasindeedthecasebasedondetaileddiscussionofthequalitygroupratingsforthedieselgeneratorauxiliarysystemsinNUREG-0843,"SafetyEvaluationReportrelatedtotheoperationofSt.LuciePlant,UnitNo.2"(SE)October1981.Section9.5.4notesthatthecomponentsareintentionallyoverdesignedandareconsideredequivalenttoasystemdesignedtoASMEsectionIIIClass3requirements.FSARSection3.2.2alsostatesthat"SystemsimportanttosafetyandthecontainmentboundaryareclassifiedinaccordancewithANSIN18.2,..."ThedieselairstartandfueloilsystemsareclassifiedasSafetyClass3byANSIN18.2.Recognizingthatthesystemsareimportanttonuclearsafety,testingofthesafetyrelatedpumpsandvalvesisrequired.Appropriatetesting'commensuratetothesystemssafetyfunctionhavebeenandwillcontinuetobeperformed,butnotunderthejurisdictionoftheASMEISTprogram.ThedieselairstartandfueloilsystemswillstillbemaintainedtotheQualityGroup3classificationtowhichtheyhavebeenupgradedto.RevisiontotheFSARhasbeenmadeasaresultoftheevaluationtoreflecttheoptionalownerupgradestatusofthesesystems.ThoughtheFSARdesignbasesstatesthat"Thesystemservesnosafetyfunction...",aseparateevaluationoftheinstrumentairsystemcouldnotconfirmthestatusforparticularvalvesasanowneroptionalupgradetoQualityGroupBorCbasedonthedesignclassificationrequirementsunrelatedtotheoverallsystemfunction.Therefore,thesequalitygroupBvalveswhichserveasafetyfunctionhavebeenincludedinthescopeofthecurrentISTprogramrevision.DuringthetimeinwhichthesevalvesdidnotappearintheISTprogramdocument,St.Luciecontinuedtotest thesevalvesbytheexistingplantproceduresatthefrequencyandtotherequirementsofthecurrentISTprogram.TERSection5.2NRCRecommendedActi.on:TheISTProgram'sscopewasreviewedforselectedsystems.ThepumpsandvalvesintheAuxiliaryFeedwaterSystem,MainSteam,ChemicalandVolumeControlSystemandComponentCoolingWaterSystemwerereviewedagainsttherequirementsofSectionXIandtheregulations.TheFSARwasusedtodetermineifthespecifiedvalvecategoriesandvalvefunctionswereconsistentwiththeplant'ssafetyanalyses.ThereviewresultsshowedcompliancewiththeCode,exceptforthefollowingitems.ThelicenseeshouldreviewtheseitemsandmakechangestotheISTProgram,whereappropriate.Additionally,thelicenseeshouldverifythattherearenotsimilarproblemswiththeISTProgramforothersystems.St.LucieResponse:ThefunctionsofallQualityGroupA,B,andCvalveshaverecentlybeenreviewedtoupgradetheISTProgramsBasisDocumentation.ThisBasisDocumentationidentifiesandexplainswhyindividualvalvesareincludedornotincludedintheISTProgram.TheFSARandotherplantdocumentswereusedinthisupgradetodetermineifthespecifiedvalvecategoriesandvalvefunctionswarrantthevalvesinclusionintheISTProgram.ManyofthevalvesidentifiedhavebeenincludedorexcludedfromtheISTProgramforoneofthefollowingreasons:1.Wheremultiplecomponentsarecapableofperformingthesameequivalentandredundantspecifiedfunction(eg.multiplevalvesclosinginseries)andwherethecomponentsarenotsuppliedbyalternateandredundantpowersupplies,onlyoneneedbeincludedintheprogram.Thecomponentmustbereliedupontoperformandnotsimplyhavethecapabilityofperformance.Thisexemptiononlyapplieswherelicensingdocumentsdonottakecreditforthedesignedredundancy.Componentsperformingaredundantfunctionshallbeincludedinthetestingprogramif,intheprocessofanalysisorlicensingjustification,theyarereliedupontobeoperable.2.Valvesinstalledprimarilyforthepurposeofprovidingconvenientoperationalflexibility(eg.systemcross-connects)thatarenotrequiredtooperate,assumingthatthedesignatedfirst-linesystemsandcomponentsoperatesatisfactorily,neednotbeincludedintheISTProgram.Thisdoesnotexcludeactivevalvesthatcouldbecalleduponasaresultofoptionalsystemlineupsexistingpriortotheinitiationofanaccident.NRCRecommendedAction:
A.AuxiliaryFeedwaterandMainSteamSystems-SincepartoftheAuxiliaryFeedwaterSystemisshownontheflowdiagramfortheMainSteamSystem,theresultsofthereviewforthesetwosystemsarepresentedjointly.Thereferencedrawingsare:2998-G-080,Sheet2of2,Rev.18,"FlowDiagram-Feedwater8CondensateSystems,"and2998-G-079,Sheet-1of6,Rev.16,"FlowDiagram-MainSteamSystem-SheetNo.1."Thefollowingitemswereidentified:1.ThelicenseeshouldreviewthebasisforincludingandexcludinglockedopenmanualvalvesintheProgram.Specifically,thefollowinglockedopenmanualvalveswhicharelocatedontheAFWdischargelinesupstreamofthesteamgeneratorsanddownstreamofnormallyclosedmotoroperatedvalvesareincludedintheprogram:2I-V-09120,2I-V-09152,2I-V-09136,and2I-V-09158(Thelicenseeshouldnotethatthedrawingcoordinatesareincorrectlylistedintheprogramtablefortheabovevalves),whilethefollowingvalveslocatedimmediatelyupstreamofthenormallyclosedmotoroperatedvalvesarenotincludedintheprogram:2I-V-09108,2I-V-09124,and2I-V-09140.(ThereareotherlockedopenmanualvalvesontheAFWpumps'ecirculationlinestothecondensatestoragetankandalsoonthepumps'uctionlineswhicharenotincludedintheprogram)St.LucieResponse:LockedopenmanualvalvesareincludedintheProgramonlyiftheyarereliedupontoperformaspecificfunctioninshuttingdownthereactortothecoldshutdownconditionorinmitigatingtheconsequencesofanaccident.PlantemergencyoperatingproceduresdirectthattheAFWdischargelinemanualoperatedvalves:V-09120,V-09152,V-09136,andV-09158beclosedtoisolatetheaffectedsteamgeneratorintheeventofasteamgeneratortuberupture.Thesevalvesarereliedupontoclosetocontroltheunrestrictedreleaseoffissionproductsandarethereforeincludedintheprogram.Theprogramtablehasbeenrevisedtocorrectlylistthedrawingcoordinatesfortheabovevalves.NRCRecommendedAction:2.Forthefollowingcheckvalves,thelicenseeshouldverifythatthevalvesdonotperformasafetyfunctionintheclosedposition:2I-V-09252and09294,steamgeneratorfeedwaterlinecheckvalvesinsidecontainment.2I-V-09107,09119,09123,and09135,AFWpumps'ischargelinecheckvalvesdownstreamofnormallyclosedmotoroperatedvalves.2I-V-09139,09151,and09157,AFWpumps'ischargelinecheckvalvesimmediatelyadjacenttopumpdischarge.St.LucieResponse:V-09252andV-09294:Isolationofthesteamgeneratorsisprovidedbythemainfeedwaterblockvalvesandauxiliaryfeedwater isolationvalves,thereforeclosureofthesevalvesisnotrequired.V-09119,V-09135,V-'09151,andV-09157:Theonlyclosurefunctionistopreventreverseflowintheeventofapassivefailureoftheauxiliaryfeedwaterheaderupstreamofthesevalves.Thisisaredundantfunctiontothenormallyclosedauxiliaryfeedwaterisolationmotoroperatedvalves,MV-09-09throughMV-09-12whicharelocatedincloseproximitywithinthequalitygroupBboundaryandarecreditedwithperformingthecontainmentisolationfunctionaswell.Therefore,testingtheclosurefunctionofthesevalvesisnotrequired.V-09107,V-09123,andV-09139:Theauxiliaryfeedwatersupplylinesareseparatedbynormallyclosedcross-tievalves,closureofthesevalveisnotreliedupon.Thesevalveswouldonlyberequiredtocloseifisdesiredtofeedthe"2B"steamgeneratorwiththe"2A"auxiliaryfeedwaterpump,orvice-versa.Sincetherearealreadytwoindependent,redundantAFWflowpathstoeachS/G,thisadditionalflowpathisnotrequired.NRCRecommendedAction:B.ComponentCoolingSystem-Thereferencedrawingforthissystemis2998-G-083,Rev.18,"FlowDiagramComponentCoolingSystem."Thefollowingitemswereidentified:1.Forthecomponentcoolingsurgetank,diaphragm'operatedventvalve2-RCV-14-1,anditsaccompanyingsolenoidvalveRSE-14-1,ontopofthetankareshownasinterlockedonahighradiationsignal,yetneithervalveislistedintheprogramtables.Thelicenseeshouldverifythatthesevalvesdonotperformasafetyfunction.St.LucieResponse:RCV-14-1:ThisqualitygroupD,threewayvalvenormallyventstheCCWsurgetanktoatmosphere.OnaCCWhighradiationsignal,itshiftstoventthetanktothewastemanagementsystemintheeventthatcomponentcoolingpipinginsidecontainmentisdamaged.SincepassivefailureoftheCCWpipinginsidecontainmentisnotpostulatedasaconsequenceofanaccidentand,ifitoccurred,thelikelyresultwouldbeleakageintothecontainment,testingofthisvalveisnotrequired.NRCRecommendedActi.on:2.CCWPumpssuctionanddischargeheaderinter-tievalvesMV-14-1andMV-14-3areshownontheflowdiagramasnormallyclosedwhiletheprogramtablesindicatethatthenormalpositionisopen.Similarly,containmentcoolingunitssuctionanddischargevalves MV-14-9toMV-14-16areshownontheflowdiagramaslockedopenwhiletheprogramtablesindicateonlythatthenormalpositionisopen.Thelicenseeshouldreviseeitherthedrawingortheprogramtablesasappropriate.St.LucieResponse:TheCCWPumpssuctionanddischargeheaderinter-tievalvesMV-14-1andMV-14-3andthecontainmentcoolingunitssuctionanddischargevalvesMV-14-9toMV-14-16havebeenremovedfromtheISTProgram.TheCCWpumpsuctionanddischargeheaderinter-tievalvesMV-14-1andMV-14-3areopenedintheeventthateitherthe2Aor2BCCWpumpfails.The2Cpumpmaythenbealignedtothefailedpumpsheaderbyrepositioning,ifnecessary,theheaderinter-tievalves.Althoughthismaybe'animportantfunction,itisnotexpectedtoberequiredduringanaccidentscenariosincetworedundantfullcapacitypumpsandessentialheadersareprovidedtoassureadequatecoolingcapacityifonesystemfails.Itisnotexpectedthatthe2Cpumpwouldberequiredtobealignedtothealternateheaderduringanaccidentscenariounlessthesystemissubjectedtoseveralconcurrentactiveandpassivefailures,therefore,testingisnotrequired.ThecontainmentcoolingunitssuctionanddischargevalvesMV-14-9toMV-14-16arelockedopentoprovidecontainmentcoolingduringaLOCA.Thisvalveisnotrequiredtocloseforcontainmentisolationsincethecontainmentfancoolersandassociatedpipingformthecontainmentboundary.NRCRecommendedAction:C.ChemicalandVolumeControlSystem(CVCS).Thereferencedrawingsforthissystemwere:2998-G-078,Sheet120,Rev.ControlSystem(Sheet1)"2998-G-078,Sheet121,Rev.ControlSystem(Sheet2)"2998-G-078,Sheet122,Rev.ControlSystem(Sheet3)"4,"FlowDiagram-Chemical&Volume5,"FlowDiagram-Chemical&Volume5,"FlowDiagram-Chemical&VolumeThefollowingitemswereidentified:1.OnSheet2,checkvalvesV-2112(G-3),onthenitrogensupplylinetothevolumecontroltank(VCT),V-2188(F-5),ontheboricacidmakeupandprimarywatermakeupblendinglinetotheVCT,andV-2308(F-3),onthedischargeofthechemicaladditionmeteringpump,formtheboundarybetweensafetyclassandnonsafetyclasspipingyetnoneofthethreevalvesareintheISTProgramforeitheranopenorclosetest.Thelicenseeshouldverifywhether7, thesevalvesshouldbeincludedintheprogram,andrevisetheprogram,asnecessary.St.LucieResponse:V-2112:ThisvalveopenstoadmithydrogengastomaintainablanketgasintheVCTduringnormaloperationsortoadmitnitrogengasduringmaintenanceperiodstocontrolRCSwaterchemistry.Neitherofthesefunctionsarerequiredinshuttingdownareactortothecoldshutdownconditionorinmitigatingtheconsequencesofanaccident.FailureofthisvalvetoclosewouldnotdisabletheVCTbecausethegassupplylinepenetratestheVCTaboveitsnormaloperatinglevelthusnoinventorywouldbelost.V-2118:ThisvalveopensiftheSITsarealignedtotheVCTtoprovideboratedwatertomaintainRCSinventoryduringplantcooldown.TheSIT/VCTintertieisrequiredforplantcooldownshouldatornadorendertheRWTandPWTinoperable.DuringanaccidentthischeckvalveclosestopreventconcentratedboricacidfrombeingbackfedintotheVCT.ThisfunctionisnotrequiredasitisredundantwiththatofV-2501,VCTdischargeisolationvalve.V-2308:Thisstop-checkvalveisonlyopenedwhileinjectingchemicalsintotheCVCSsystem.AddingchemicalstotheCVCSisamaintenanceitemonly,anddoesnotperformaspecificfunctioninshuttingdownareactortothecoldshutdownconditionorinmitigatingtheconsequencesofanaccident.Normally,V-2308isclosedusingitshandwheeltopreventanybackflowintothenon-seismicchemicaladditionpiping.Inthisclosedposition,thevalveactsasapassiveisolationvalveandthereforedoesnotrequiretesting.NRCRecommendedAction:2.IntheFSAR,'jl9.3.4.3.2,referenceismadetoheat-tracedpipingreliefvalveswhichareprovidedforthoseportionsoftheboricacidsystemthatareheattracedandcanbeisolatedindividually.Thevalvesrelievethemaximumfluidthermalexpansionratethatwouldoccurifmaximumduplicateheattracingpowerwereinadvertentlyappliedtotheisolatedline.Thesevalvesappear'nSheet2asV-2171,V-2631,V-2632,V-2634,V-2636,V-2639,V-2641andV-2648.However,noneofthesevalvesisincludedintheISTProgram.Thelicenseeshouldverifywhetherthesevalvesshouldbeincludedintheprogram,andrevisetheprogram,asnecessary.St.LucieResponse:PSLrecentlyloweredtheboricacidconcentrationrequirementsfortheboricacidmakeupsystem.Thischangeallowsfortheheattracingtobedeenergizedthuseliminatingtheneedforthereliefvalvestoprotectthepipingfromthermalexpansionoftheboricacidsolution.Thesevalveshavebeenphysicallyremovedfromthe CVCSsystem.Thesevalvesdonotappearonrevision16todrawing2998-G-078,Sheet121,"FlowDiagram-Chemical&VolumeControlSystem(Sheet2)".NRCRecommendedAction:3.OnSheet2,checkvalvesV-2118andV-2674(bothF-4)areontheoutletlineoftheVCTleadingtothesuctionofthechargingpumpsandalsoupstreamoftheconnectionfromtheboricacidmakeuppumpsdischargetothechargingpumps'uction.Althoughbothvalvesareincludedintheprogram,theyareonlytestedintheopenposition.ThelicenseeshouldverifywhetherthevalvesperformasafetyfunctionintheclosedpositionbypreventingbackflowintotheVCTwhentheboricacidmakeuppumpsareinoperation,andrevisetheprogram,asnecessary.St.LucieResponse:V-2118andV-2674:ThesecheckvalvesarenotrequiredtoclosebecausetheVCTdischargeisolationvalveV-2501canbeclosedfromthecontrolroomandautomaticallyclosesonSIAStopreventconcentratedboricacidfrombeingbackfedintotheVCT.NRCRecommendedAction:4.OnSheet2,checkvalveV-2191(E-3)isonalineleadingfromtherefuelingwatertank(RWT)tooutletlineoftheVCTwhichinturnleadstothechargingpumpsuction.ItappearsthatthisvalveopenstoallowthechargingpumpstoprovideborationoftheRCSusingtheRWTtoachieveshutdowncoolingconditions.Insuchacase,thenormallyclosedmotor-operatedvalveV-2504immediatelyupstreammustbeopensothatitdoesnotappearthatV-2504couldbereliedupontopreventreverseflow.AlthoughV-2191isintheProgram,itisonlytestedintheopenposition.ThelicenseeshouldverifywhetherV-2191performsasafetyfunctionintheclosedposition,bypreventingreverseflowfromothersourcessuchasthechemicaladditionmeteringpumpandthecontentsoftheVCT,andrevisetheprogram,asnecessary.St.LucieResponse:V-2191:Closureofthisvalveisnotrequiredasthisfunctionisprovidedbynormallyclosedisolationvalve,V-2504.Additionally,ifV-2504wereopenandV-2191failedtocloseanyinventorydivertedtotheRWTwouldstillbeavailableforemergencyborationfromtheRWT.NRCRecommendedAction:5.IntheFSAR,99.3.4.3.2,V-2435isdescribedasthecharginglinethermalreliefvalvewhichisaspringloadedcheckvalvedownstreamoftheregenerativeheatexchanger.Thevalveissized torelievethemaximumfluidthermalexpansionratethatoccursifhotletdownflowcontinuedafterchargingflowwasstoppedbyclosingthecharginglinedistributionvalves.ThevalveappearsonSheet3(B-7).However,thevalveisnotincludedintheprogramforeitheranopenorclosetest.Thelicenseeshouldverifywhetherthisvalveshouldbeincludedintheprogram,andrevisetheprogram,asnecessary.St.LucieResponse:V-2435:Intheunlikelyeventthatthechargingheaderisisolatedandhotfluidcontinues,toflowthroughtheletdownsideoftheregenerativeheatexchanger,thefluidinthechargingsideoftheheatexchangerwouldbesubjecttoexpansion.Undertheseconditions,thisvalveisdesignedtoopen,thusprovidingthermalreliefprotectionfortheheatexchangerandrelatedpiping.Duringanaccidentscenarioitisnotexpectedthatsuchconditionswouldexistnoristhisconsideredtobeasafetyfunction,thus,testingofthisvalvetoopenisnotrequired.Thevalveisnotrequiredtoclosetoperformasafetyfunction.Thisvalveisnotatahighpressure/lowpressureinterface.Passivefailureof,upstreampipingisnotconsideredcredibleasitisdesignedtooperateatpressuresexceedingthenormalRCSpressure.NosinglefailureofanyactivecomponentcanoccurthatwoulddivertflowfromtheRCSthroughthechargingheaderifthisvalveweretofailtoclose.ContainmentisolationvalveV-2523canalsobeclosedifrequired.Additionallyatleastonechargingpumpwillbeavailabletosupplyflowthroughthisvalveduringanysinglefailurescenario.NRCRecommendedAction:6.OnSheet3,checkvalvesV-2431(D-S),onthepressurizerauxiliarysprayline,andV-2432(C-8)andV-2433(B-S),onthecharginglineconnectionstotheRCS,arealllocatedinsidecontainmentandappeartoformpartofthereactorcoolantpressureboundary(i.e.,formingtheboundarybetweenClass1andClass2piping).Althoughthevalvesareincludedintheprogram,theyareonlydesignatedfortestingintheopenposition.Thelicenseeshouldverifywhetherthevalvesperformasafetyfunctionintheclosedposition,andrevisetheprogram,asnecessary.St.LucieResponse:V-2431,V-2432,V-2433:Thesevalvesarenotrequiredtoclosetoperformasafetyfunction.Thesevalvesarenotatahighpressure/lowpressureinterface.PassivefailureofupstreampipingisnotconsideredcredibleasitisdesignedtooperateatpressuresexceedingthenormalRCSpressure.NosinglefailureofanyactivecomponentcanoccurthatwoulddivertflowfromtheRCSthroughthechargingheaderifthesevalvesweretofailtoclose.IsolationValvesSE-02-1,SE-02-2,SE-02-3,SE-02-4andV-2523canalsobeclosedifrequired.Additionallyatleastonecharging10 pumpwillbeavailabletosupplyflowthroughthisvalveduringanysinglefailurescenario.TERSection5.2NRCRecommendedAction:(2ndste5.2)AsdiscussedintheTERevaluationfornumerousreliefrequests,specificportionsofOMa-1988,Parts6and10maybeutilizedwithoutrelief,providedallrelatedrequirementsareimplemented.Approvalisrecommendedpursuantto550.55a%(f)(4)(iv).TheuseofspecificportionsofPart6or10andanyrefuelingoutagejustificationsshould,however,bedocumentedintheISTProgram.ImplementationofrelatedrequirementsissubjecttoNRCinspection.St.LucieResponse:Thisactionitemisidenticaltoitem4.2oftheNRCSEissuedAugust23,1993.FPLrespondedtothisactionitemintheresponsetothepreviousSE.TERSection5.3NRCRecommendedAction:Section4.2oftheISTProgramstatesthatthevalvetestfrequencymaybeextendedby25%,asallowedbytheTechnicalSpecifications.TheextensionoftestintervalsshouldnotbeappliidtosafetyandreliefvalvestestedinaccordancewiththeintervalsdefinedinSectionXI,becausetheTechnicalSpecificationsdonotaddressthesetestintervals.St.LucieResponse:Thisactionitemisidenticaltoitem4.3oftheNRCSEissuedAugust23,1993.FPLrespondedtothisactionitemintheresponsetothepreviousSE.TERSection5.4NRCRecommendedAction:InGenericPumpReliefRequestPR-2,thelicenseehasrequestedreliefconcerningportableinstrumentsusedfortemperatureandspeedmeasurement.Whenusingtemporaryinstruments,thelicenseeshouldensurethattheinstrumentsarecalibratedpriortouseandaretraceabletotheinservicetestrecords.(TERSection2.1.2)St.LucieResponse:Thisactionitemisidenticaltoitem4.4oftheNRCSEissuedAugust23,1993.FPLrespondedtothisactionitemintheresponsetothepreviousSE.11 0
TERSection5.5NRCRecommendedAction:InPumpReliefRequestsPR-8,PR-ll,andPR-15,thelicenseeisproposingtocalculatepumpsuctionpressurebasedonmeasuringtankorinletstructurelevels.Calculationofinletpressurebasedonthemeasuredlevelprovidesanacceptablealternativemethodofdetermininginletpressure,providedthecalculationisproperlyproceduralized,andtheaccuracyiswithintheaccuracyrequiredbytheCodeusingdirectmeasurement.Thisshouldbedocumentedinthetestrecordsandbeavailableforreview.(TERSections2.2.1,2.3.1,2.4.1)St.LucieResponse:Thisactionitemisidenticaltoitem4.6oftheNRCSEissuedAugust23,1993.FPLrespondedtothisactionitemin'theresponsetothepreviousSE.TERSection5.6NRCRecommendedAction:InPumpReliefRequestsPR-12,PR-13,andPR-14,thelicenseehasrequestedrelieffromtheASMECode,SectionXl,11IWP-4520(b),whichrequiresthatthefrequencyresponserangeofthereadoutsystem(forinstrumentsusedtomeasurevibrationamplitude)shallbefromone-halfminimumspeedtoatleastmaximumpumpshaftrotationalspeed.Specifically,inPR-12forthereactorcoolantchargingpumps,thecode-requiredfrequencyrangeis1.75Hzto3.5Hz.InPR-13fortheintakecoolingwaterpumps,thecode-requiredfrequencyrangeis7.38Hzto14.75Hz.InPR-14forthecontainmentspraysystemhydrazinepumps,thecode-requiredfrequencyrangeis0.875Hzto1.75Hz.Thelicenseeclaimsthatinstrumentssatisfyingtheserangerequirementsarecommerciallyunavailable,andthatthelowestavailableresponsefrequencyis10Hz.Thestaffhas,however,identifiedequipmentwithafrequencyresponserangelessthan10Hz.ThelicenseeshouldfurtherinvestigatetheprocurementofinstrumentsthatcomplywiththeCoderequirements.Also,thelicenseehasnotdiscussedtherepeatabilityandaccuracyoftheinstrumentstobeused.Thelicenseeshouldadditionallyevaluateeachpumptodetermineifthepumpsaresusceptibletodegradationmechanismsthatresultinincreasedvibrationlevelsatfrequencieslowerthan10Hz.ImmediateimpositionoftheCoderequirementsisimpracticalduetolimitationsinthecurrentinstrumentationanditwouldbeanundueburdentorequiretheplanttodeclarethepumpsinoperableuntiltheevaluationofsubharmonicfrequenciesand/oravailableinstrumentationcouldbereviewed.Reliefwasrecommendedforaninterimperiodofoneyearoruntilthenextrefuelingoutage,whicheverislatertoperformtheevaluationsintheAugust23,1993SE.Theinterimreliefremainsineffectintothesecondten-yearinterval.(TERSections2.2.2,2.3.2,2.4.2)12 St.LucieResponse:Thisactionitemisidenticaltoitem4.7oftheNRCSEissuedAugust23,1993.FPLrespondedtothisactionitemintheresponsetothepreviousSE.TERSection5.7NRCRecommendedAction:InPumpReliefRequestPR-17forthecontainmentsprayhydrazinepumps,thelicenseeisproposingtomeasurepumpflowrateandvibrationquarterlybutnotalerttrendtheflowrate.Atrefueling,thepumpflowrateandvibrationwillbemeasured.Referringtothelicensee'srequest,itappearsthatthelicenseewillnottakeanycorrectiveactionsbasedontheflowratemeasuredquarterlyexceedingthealertorrequiredactionvalues.Thelicenseeshouldevaluatetheestablishmentofrequiredactionrangesforquarterlytesting.ThelicenseehasreferencedSectionXl11IWP-4150inthereliefrequest,howeverthelicenseehasnotdiscussedthepossibleuseofasymmetricaldampingdevicetoprovideforflowrateaveraging.Additionally,thelicenseehasnotdiscussedtheimpactorburdenofinstallingflowinstrumentationthatcouldbeusedeffectively'orthequarterlytest.Referencetothelicensee'sAppendixA,pumpprogramtableindicatesthatthelicenseewillnotmeasurethepumpinletpressureordifferentialpressure.TheASME/ANSICodeOMa-1988,Part6,Table3b,requiresthatpumpdischargepressurebemeasuredforpositivedisplacementpumps.Thelicenseehasnotprovidedabasisfornotmeasuringpumpdifferentialordischargepressure.Providedthelicenseedeterminesthatthereisnopracticalmeansofinstallingflowinstrumentationthatisadequateforinservicetestingpurposes,deferringflowratemeasurementtorefuelingoutagesmaybeconsideredacceptable.Thelicenseeshouldevaluatetheprocurementofdampingdevicesornewflowinstrumentationandmeasureandevaluatequarterlypumpdifferentialordischargepressureaswellasvibration.ImmediateimpositionoftheCoderequirementsisimpracticalduetolackofadequateinstalledflowinstrumentation,anditwouldbeanundueburdentorequiretheplanttodeclarethesepumpsinoperableuntiltheavailabilityofnewinstrumentationcouldbereviewed.Therefore,itisrecommendedthatreliefbegrantedforaninterimperiodofoneyear,oruntilthenextrefuelingoutage,whicheverislater.Theinterimreliefremainsineffectintothenextten-yearintervalduetobeginAugust9,1993.Intheinterim,thelicenseeshouldestablishacceptancecriteriaforRPMversusflowratecorrelationandtakecorrectiveactionifneeded,andmeasuredischargepressure,ifpossible.(TERSection2.4.3)13 St.LucieResponse:Thisactionitemisidenticaltoitem4.8oftheNRCSEissuedAugust23,1993.FPLrespondedtothisactionitemintheresponsetothepreviousSE.TERSection5.8NRCRecommendedAction:InValveReliefRequestVR-13,thelicenseeisproposingtodisassembleandinspectevery10yearseachofthefour12in.dischargelinecheckvalvesinthelinesfromthesafetyinjectiontankstothereactorcoolantsystem.ExercisingclosedistobeinaccordancewiththeTechnicalSpecificationsregardingpressureisolationvalves(P1Vs).Disassemblyandinspectionshouldonlybeusediftestingwithflowisimpractical.Thelicenseeshouldprovideananalysisortestresultstoshowthatthenominal52secondsstroketimefortheSITdischargeisolationmotor-operatedvalvestoopenistoolongtopermitsufficientflowtocausethecheckvalvestoreachtheirfull-openposition.Ifafull-openpositioncanbereached,thelicenseeshouldperformthetestwithflowtoconfirmdiskposition.Tosubstantiatetheacceptabilityofanyalternativetechniqueforverifyingthatthevalvesarefullyopen,licenseesmust,asaminimum,addressanddocumentcertainitemsintheISTprogram,asdescribedinPosition1.However,ifthelicenseedeterminesthatfull-strokeexercisingwithflowisimpractical,thelicenseemay,asdiscussedbytheNRCinGenericLetterPosition2,performvalvedisassemblyandinspectionasapositivemeansofdeterminingthatavalve'sdiskwillfull-strokeexerciseopenorofverifyingclosurecapability.ThelicenseeiscurrentlyproposingtomeetPosition2.Assuranceofproperreassemblywillbeprovidedbyperformingaleaktestorpartial-flowtestpriortoreturningavalvetoservicefollowingdisassembly.However,thelicenseeintendstoinspecteachcheckvalveonlyonceinthe10yearInserviceInspectionprograminterval.AsdefinedinPosition2,inordertosupportextensionofthevalvedisassembly/inspectionintervalstolongerthanonceevery6years,i.e.,incasesof"extremehardship,"licenseesshouldperformareviewoftheinstallationofeachvalveaddressingthe"EPRIApplicationsGuidelinesforCheckValvesinNuclearPowerPlants"forproblematiclocations.Thelicenseeshouldjustifytheextremehardship,includingadiscussiononwhynon-int'rusivetechniquescannotbeused.Additionally,thelicenseestatesthatvalveswillbeleaktestedorpartial-flowtestedfollowingdisassembly.Ifpossible,partialvalvestrokingquarterlyorduringcoldshutdowns,orafterreassembly,mustbeperformed.
ReliefisgrantedperGenericLetter89-04,Position1,tofull-strokeexercisethevalvesopenwithlessthantheaccidentflowrate,providedallcriteriainPosition1aremet.Ifthelicenseedeterminesthatfull-strokeexercisingisimpractical,reliefisgrantedperPosition2todisassemble/inspectthesecheckvalves,providedthelicenseemeetsallthecriteriainPosition2,includingreviewingtheinstallationofthevalves,demonstratingextremehardship,andpartial-strokeexercisingfollowingreassemblyandatcoldshutdownifpractical.Withrespecttoexercisingthevalveclosed,OMa-1988Part10,4.3.2.2allowsfull-strokeexercisingthatisnotpracticableduringoperationorcoldshutdowntobedeferredtorefuelingoutages.RelieftousetheTechnicalSpecificationrequirementsisnotrequiredpursuantto550.55a9(f)(4)(iv),providedthelicenseeimplements94.3.2.2andallrelatedrequirements,includingPart10,94.3.2.2(h)and96-2.ImplementationoftheserelatedrequirementsissubjecttoNRCinspection.(TERSection3.2.2)St.LucieResponse:Thisactionitemisidenticaltoitem4.9oftheNRCSEissuedAugust23,1993.FPLrespondedtothisactionitemintheresponsetothepreviousSE.TERSection5.9NRCRecommendedAction:InValveReliefRequestVR-14,thelicenseeisproposingtopartial-strokeexerciseatcoldshutdownsandrefuelingoutagesthefour12in.safetyinjectioncheckvalveswhichopentoprovideflowpathsfrom0hesafetyinjectionheaderstotheRCSandclosetoisolatetheheadersfromthehighpressureofthereactorcoolantsystem.Thelicenseeshouldevaluateifthevalveswillachieveafull-openpositionwiththeproposedreducedtestflowrateof3,000GPM.Ifafull-openpositioncanbereached,thelicenseeshouldperformthetestingwithflow.Theuseofalternatetechniques,suchasnon-intrusivetechniques,toverifythatvalveswillfullyopenisacceptable,asdiscussedinGenericLetter89-04,Position1.Ifthevalvescannotbefull-strokeexercised,theNRCdefinedanacceptablealternativeto'thefull-strokeexercisingrequirementinPosition2,whereinitisstatedthattheNRCstaffpositionisthatvalvedisassemblyandinspectioncanbeusedasapositivemeansofdeterminingthatavalve'sdiskwillfull-strokeexerciseopenorofverifyingclosurecapability.ThelicenseeiscurrentlyproposingtomeetPosition2.Assuranceofproperreassemblywillbeprovidedbyperformingaleaktestorpartial-flowtestpriortoreturningavalvetoservicefollowingdisassembly.However,thelicenseeintendstoinspecteachcheck15 valveonlyonceinthe10yearinserviceinspectionprograminterval.AsdefinedinPosition2,inordertosupportextensionofthevalvedisassembly/inspectionintervalstolongerthanonceevery6years,i.e.,incasesof"extremehardship,"licenseesshouldperformareviewoftheinstallationofeachvalveaddressingthe"EPRIApplicationsGuidelinesforCheckValvesinNuclearPowerPlants"forproblematiclocations.Thelicenseeshouldalsoincludeadiscussiononwhynon-intrusivetechniquescannotbeused.Additionally,thelicenseestatesthatthevalvewillbeleaktestedorpartial-flowtestedfollowingdisassembly.Position2requiresthat,ifpossible,partialvalvestrokingquarterlyorduringcoldshutdowns,orafterreassembly,mustbeperformed.ReliefisgrantedperGenericLetter89-04,Position1,tofull-strokeexercisethevalvesopenwithlessthantheaccidentflowrate,providedallcriteriainPosition1aremet.Ifthelicenseedeterminesthatfull-strokeexercisingisimpractical,reliefisgrantedperPosition2todisassemble/inspectthesecheckvalves,providedthelicenseemeetsa'llthecriteriainPosition2,includingreviewingtheinstallationofthevalves,demonstratingextremehardship,andpartial-strokeexercisingfollowingreassemblyandatcoldshutdownifpractical.Withrespecttoexercisingthevalveclosed,verificationthatavalveisintheclosedpositioncanbedonebyvisualobservation,byanelectricalsignalinitiatedbyaposition-indicatingdevice,byobservationofappropriatepressureindicationinthesystem,byleaktesting,orbyotherpositive'eans.Thelicenseedoeshaveinstrumentationtocontinuouslymonitorupstreampressure.BasedontheTechnicalSpecifications,itappearsthatfollowingthepartial-strokeexerciseatcoldshutdowns,verificationthatthevalveshaveclosedwillbeperformedandreliefwouldnotberequired.Thelicenseeshouldexercisethesevalvesclosedatcoldshutdownsorrevisetherequestaccordingly.(TERSection3.2.3)St.LucieResponse:Thisactionitemisidenticaltoitem4.10oftheNRCSEissuedAugust23,1993.FPLrespondedtothisactionitemintheresponsetothepreviousSE.TERSection5.10NRCRecommendedAction:ThelicenseestatesinVR-1thatvalvetestingneednotbeperformedmoreoftenthanonceeverycoldshutdown,exceptasprovidedforinIWV-3417(a),whichrequiresmorefrequenttestingasaresultofdegradedstroketimes.TheASMEissuedaCodeinterpretation(Xl-1-92-41)thatstatesthatitistheintentofSectionXl,IWV-3410and3520,torequiretestingofvalveseverythreemonths,includingduringextendedshutdownperiods,forvalvesotherthanthoseinsystemsdeclaredinoperableornotV requiredtobeoperable(IWV-3416).Therefore,duringplantshutdownperiods,whenthevalvescanbeexercised,thelicenseeshouldexercisevalveseverythreemonthsinaccordancewiththeCodeorprovideareliefrequest.Additionally,ifspecificvalvescannotbetestedduringanycoldshutdown(i.e.,dueto"thelackofplantconditionsneededfortesting"),specificapprovalisrequiredtodefertesting.Thelicenseeshouldrevisethecoldshutdownjustifications,asrequired,todiscusstheconditionsunderwhichtestingcannotbeperformedduringanycoldshutdowns.St.LucieResponse:ReliefrequestVR-1hasbeenwithdrawn.OMa-1988,Part10,4.2.1.2(g)and4.3.2.2(g)havebeenauthorizedforimplementation.Theprovisionthatvalvetestingneednotbeperformedmoreoftenthanonceeverycoldshutdownhasbeendeleted.ValvesthatcanbeexercisedduringcoldshutdownperiodswillbeexercisedeverythreemonthsinaccordancewiththeCodeortheywillbedeclaredoutofserviceuntilsuchtestingcanbecompleted.TheplantadministrativeproceduregoverningASMECodetesting,ofpumpsandvalvesstatesthefollowing:"Iftheunitremainsincoldshutdownforgreaterthan90days,thecoldshutdownvalvesshallbeexercisedagain.Plantstartupshouldnotbedelayedbecauseoftestingaslongasareasonablegoodfaitheffortwasmade."TERSection5.11NRCRecommendedAction:Forthefollowingcheckvalves,thelicenseehasnotidentifiedanyclosedpositiontestingrequirementinthevalveprogramtable.Thelicenseeshouldreviewthesafetyfunctionsofthesevalvesandrevisetheprogram,ifnecessary:VR-5:VR-7'R-8'R-11:VR-21:VR-32:V-2177,2190,2191and2526V-07000andV-07001V-3401andV-3410V-3113,V-3133,V-3143andV-3766V-07129andV-07143V-3101St.LucieResponse:V-2177:Closureisnotrequiredasthisfunctionisprovidedbynormallyclosedisolationvalve,V-2514.V-2190:ThereisnorequirementforthischeckvalvetocloseduringaSIAStopreventrecirculationoftheemergencyborateflowbacktotheBAMTsorthesuctionoftherunningBAMpumps.Thisisbecauseanyleakagepastthevalvewouldbeavailabletothechargingpumpsthroughthegravityfeedline.17 V-2191:Closureisnotrequiredasthisfunctionisprovidedbynormallyclosedisolationvalve,V-2504.Additionally,ifV-2504wereopenandV-2191failedtocloseanyinventorydivertedtotheRWTwouldstillbeavailableforemergencyborationfromtheRWT.V-2526:Thereisnosafetyrelatedrequirementforthisvalvetoclose.Theonlypositionthisvalveisrequiredtobeinduringanaccidentisopen,allowingboricacidtothesuctionofthechargingpumpsviatheboricacidmakeuppumpsorthegravityfeedlinesfromtheboricacidmakeuptanks.V-07000andV-07001:ClosureisnotrequiredasthisfunctionisredundantlyprovidedbytheLPSIpumpsuctionisolationvalves.V-3401andV-3410:Closureisnotrequiredasthisfunctionisredundantlyprovidedbythepumpdischargecheckvalves.V-3113,V-3133,V-3143andV-3766:ClosureofthesevalvesisnotrequiredasthisfunctionisredundanttotheHPSIheadermotoroperatedisolationvalves.ThesevalvesarenotRCSpressureisolationvalves.V-07129andV-07143:Closurefunctionisprovidedbythepumpsdischargemanualisolationvalves(V-07130andV-07145)duringshutdowncooling.Thereisnosourceofbackflowinthecontainmentspraymodeofoperation.V-3101:Sincethevalveisnormallyisolatedbyanupstreammanualisolationvalve,exercisinginthecloseddirectionisnotrequired.TERSection5.12NRCRecommendedAction:ForreliefrequestsVR-8,VR-10,VR-12,thelicenseestatesthatthealternatetestingsatisfiestherequirementofGenericLetter89-04,Position1.AsdiscussedinPosition1,theNRCstaffpositionisthatpassingthemaximumrequiredaccidentconditionflowratethroughthevalveisanacceptablefull-stroke.Itisassumedthatthefull-flowexerciseproposedbythelicenseecomplieswiththisposition.Ifothertechniquesareused,suchasnon-intrusivetechniquesatreducedflowrate,thelicenseemustcomplywiththesixcriteriarequiredbyPosition1.Thelicenseeshouldclarifythisstatementineachrequest.St.LucieResponse:ValvereliefrequestsVR-8,10and12havebeendeletedwiththejustificationsfortesting'thevalvesduringrefuelingoutagesnowdescribedinAppendixF:RefuelingOutageJustifications.Thesevalvesarefullstrokedbypassingthemaximumrequiredaccidentconditionflowratethroughthevalves.OMa-1988,Part10,%4.3.2.2isusedtojustifydeferringthetestingtorefuelingoutages.18 TERSection5.13NRCRecommendedAction:ThelicenseeshouldclarifywhythevalveprogramtablereferencesVR-19whenitindicatesthatV-3414andV-3427willbetestedclosedquarterly.St.LucieResponse:ThereferencetoVR-19hasbeenremovedfromthevalveprogramtableforvalvesV-3414andV-3427.TERSection5.14NRCRecommendedAction:ThelicenseehasstatedthatthevalvesreferencedinVR-12"willbepartial-strokeexercisedtotheopenpositionandsubsequentlystrokedclosedduringcoldshutdownsperVR-1"andthebasisonlydiscussestheimpracticalityoftestingquarterly.However,thevalveprogramtableidentifiesthetestfrequencyas"SP"asperVR-12andnot"CS",andthelicenseeadditionallystatesthatthevalveswillbeverifiedclosedduringthePIVleaktests.ItisassumedthatthevalvesareexercisedtotheclosedpositioninaccordancewiththeCodeduringcoldshutdowns,inadditiontothePIVleaktest.Ifexercisingthevalvesclosedatcoldshutdownsisimpractical,therequest'sbasismustberevisedtodiscusstheimpracticality.St.LucieResponse:Thevalveprogramtablehasbeenrevisedtoindicatethatthevalvesaretobetestedclosedduringcoldshutdowns.ThebasisfortestingthesevalvesatcoldshutdownsisdescribedinAppendixE:ColdShutdownJustifications.TERSection5.15NRCRecommendedAction:Fromareviewoftheapplicableflowdiagrams,2998-G-078,Sheet130,Rev.4,andthecontinuationonflowdiagram2998-G-088,Rev.19,forvalvesV-3104andV-3105,itappearsthatthereisaflowelementoneachrecirculationline,i.e.,FE-03-1-1andFE-03-2-1,whichcouldbeusedtomeasuretherecirculationlineflow.ThelicenseeshouldclarifywhytheseelementscannotbeusedinReliefRequestVR-28.Additionally,thelicenseeshouldexplainwhythequarterlyLPSIpumpflowtestdoesnotresultinarecirculationflowsufficienttocausefull-strokeexercisingofthesevalves.OMa-1988Part10.%4-3-2-2allowsfull-strokeexercisingthatisnotpracticableduringplantoperationorcoldshutdownstobedeferredtorefuelingoutages.Therefore,providedthelicenseefurnishesinformationonwhytheinstalledflowelementsornon-intrusivetechniquescannotbeusedtoverifythevalves'ull-strokeopenquarterly,thereliefrequestedbythelicenseeis19 coveredbytherulemaking,effectiveSeptember8,1992,asdescribedabove,andapprovalcouldberecommended.However,ifquarterlyfull-strokeexercisingispractical,thelicenseemustcomplywiththeCoderequirements.Thelicenseeshouldrevisethereliefrequest.St.LucieResponse:FlowelementsFE-03-1-1andFE-03-2-1arestraponultrasonicflowinstrumentsdesignedtoannunciatelowflowalarmsinthecontrolroomtowarnoperatorsoflowflowconditionsassociatedwiththeLPSIpumps.Theultrasonicflowinstrumentsareusedexclusivelytoprovidelowflowalarms.TheflowelementsandalarmswereaddedtotheoriginaldesignoftheLPSIsystemtoaddressNRCquestionsrelatedtoECCSpumpoperation.Theinstrumentsweredesignedtoalerttheoperatorstopumplowflowconditions,butwereneverintendedtohavetheaccuracyneededtoquantifythedesignedflowratesfromthepumpthroughthecheckvalves.Actualpumprecirculationflowratesaresignificantlylimitedbytheflowrestrictionorificesineachrecirculationline.ActualflowratesasmeasuredbylevelincreasesintheRWTovertimehaveproventobeonlyminimallygreaterthanthe100gpmflowratethattheorificewasdesignedtoprovide.Sincetheorificeissuchamajorcontributortotheflowlossesinthelinewiththecheckvalveonlycontributingasmallportionoftheflowrestriction,ahighdegreeofaccuracyinflowmeasurementisneededtodetectdegradationofthecheckvalves.StraponflowelementsofthenatureofFE-03-1-1andFE-03-2-1donothavetherequiredaccuracy.Usingtheacousticflowelementstoverifythecheckvalvesopenwouldbeimpractical.Theaccuracyofthestraponultrasonicdevicesisquestionableforthisapplicationandcouldunnecessarilyplacethecheckvalvesoutofserviceorpreventcheckvalvedegradationfrombeingdetected.Thetestingdescribedintheprogramisadequatetoensurethecheckvalvesareperformingtheirrequiredsafetyfunction.PrecisemeasurementsofpumprecirculationflowratesareobtainedeachrefuelingoutagebymeasuringtheRWTlevelincreaseovertimewhiledrainingthepressurizerorrefuelingcavity.DuringthequarterlyLPSIpumpruns,flowthroughtherecirculationlinesisverifiedbydeterminingthatheatisbeingremovedfromthepumps.Pumpheatremovalisthemajordesigncriteriafortherecirculationlines.Informationfromthevalvemanufacturerstatesthatflowvelocitiesof32.8ft/secarerequiredforthecheckvalvestoreachtheirfullopenposition.Duetotheflowreducingorifice,flowvelocitiesofonlyabout10ft/seccanbeachieved.Thelackofsufficientflowtocausefull-strokeexercisingofthesevalvesmakestheuseofnon-intrusivetechniquesimpractical.TERSection5.16NRCRecommendedAction:20
Anomaliesidentifiedduringthereviewofcoldshutdownjustificationsareidentifiedbelow:Thefollowingvalvesarenotexercisedclosed.Thelicenseeshouldverifythatthevalvesdonotperformasafetyfunctionintheclosedposition,orrevisetheprogramasappropriate:RC-1:V-1460throughV-1466,reactorvesselandpressurizergasvents;1in.normally-closed,solenoid-operatedglobevalves.RC-2:V-1474andV-1475,pressurizerpower-operatedreliefvalves;3in.solenoid-operated,normallyclosedglobevalves.CV-3.2:V-2431,auxiliarypressurizerspraycheckvalve;2in.normallyclosedcheckvalve.CV-3.3:V-2440,chargingpumpdischargecheckvalvetosafetyinjection;2in.normallyclosedcheckvalve.Sl-l.l:V-3106andV-3107,LPSIpumpdischargecheckvalves;10in.normallyclosedcheckvalves.Sl-3.1:V-03002throughV-03005,Safetyinjectiontank(SIT)drainlinecheckvalves;1in.normallyclosedcheckvalves.FW-1.2:V-09107,V-09123,andV-09139,auxiliaryfeedwaterpumpdischargecheckvalves;4in.normallyclosedcheckvalves.FW-1.3:V-09119,V-09135,V-09151,andV-09157,auxiliaryfeedwatersupplycheckvalves;4in.normallyclosedcheckvalves.CC-1.2:HCV-14-3A&B,shutdownheatexchangerreturnvalves;14in.normallyopen,failopen,diaphragm-operatedbutterflyvalves.St.LucieResponse:RC-1:V-1460throughV-1466:Testinginthecloseddirectionisnotrequiredasthelossofreactorcoolantthroughtheone-inchlinesisjudgedinsignificantfromtheaspectofaccidentmitigation.Theselinesareequippedwithflowrestrictingorificeslimitingthelossofcoolantliquidtowithinmakeupcapacity.RC-2:V-1474andV-1475:Closureis,notrequiredasthisfunctionisprovidedbythePORVblockvalves(V-1476andV-1477)whicharecreditedforisolatingtheassociatedPORV.CV-3.2:V-2431:Thisvalveisnotrequiredtoclosetoperformasafetyfunction.Thisvalveisnotatahighpressure/lowpressureinterface.PassivefailureofupstreampipingisnotconsideredcredibleasitisdesignedtooperateatpressuresexceedingthenormalRCSpressure.NosinglefailureofanyactivecomponentcanoccurthatwoulddivertflowfromtheRCSthroughthecharging21
headerifthisvalveweretofailtoclose.IsolationvalvesSE-02-3andSE-02-4canalsobeclosedifrequired.Additional'lyatleastonechargingpumpwillbeavailabletosupplyflowthroughthisvalveduringanysinglefailurescenario.CV-3.3:V-2440:ClosureisnotrequiredsincethelineismanuallyisolatedbyvalveV-2340.V-2340isonlyopenedtoalignemergencyborationflowfromthechargingpumpsthroughtheHPSIheaders.UnderthisconditionV-2440isrequiredtoremainopenandhasnorequirementtoclose.Sl-1.1:V-3106andV-3107:ThesevalvesarenotrequiredtoclosebecausetheLPSIpumpsareoperatingorareisolatedfromadjoiningsystemsbyshutdowncoolingheatexchangerisolationvalves,LPSIheaderisolationvalves,andsafetyinjectionheadercheckvalvesduringanaccident.Thusclosuretestingisnotrequired.Sl-3.1:V-03002throughV-03005:ClosureisnotrequiredasthisfunctionisprovidedbyvalvesSE-03-1AthroughSE-03-1D.FW-1.2:V-09107,V-09123,andV-09139:ClosureisnotrequiredasthisfunctionisprovidedbyvalvesSE-09-2throughSE-09-5.(seeresponsetosection5.2.A.2).FW-1.3:V-09119,V-09135,V-09151,andV-09157:ClosureisnotrequiredasthisfunctionisprovidedbyvalvesMV-09-9throughMV-09-12andmanualvalvesV-09120,V-09136,V-09152,V-09158.(seeresponsetosection5.2.A.2)CC-1.2:HCV-14-3A&B:Thesevalvesareclosedduringnormaloperationtodivertcomponentcoolingwaterflowfromtheshutdowncoolingheatexchangertoothercomponentsrequiringcoolingtosupportnormalpoweroperations.Thevalvesopenedtosupplycoolingwatertotheshutdowncoolingheatexchangerforplantcooldownorforcoolingcontainmentspraypumpdischargeforcontainmentcooling.Thereisnorequirementforthisvalvetocloseotherthantosupportnormalplantoperationswhichisnotrequiredtomitigatetheconsequencesofanaccidentortoshutdowntheplant.NRCRecommendedAction:CV-3.5:V-2523,charginglineisolationvalve;2in.diaphragm-operated,lockedopenglobevalve.ForV-2523,thefailuremodeistheopenposition.Sincethevalveisonlyexercisedtotheclosedposition,thelicenseeshouldexplainwhynofailsafetesting(totheopenposition)isindicatedinthevalveprogramtables.St.LucieResponse':22 Thisairoperated,failopenvalveislockedopentoallowboroninjectiontothereactorcoolantsystem.ThisvalvemayberequiredtocloseshouldthealternateborationflowpathviatheHPSIheaderbeutilized,inwhichcasethevalvewouldnotberequiredtobereopened.Theabilityofthisvalvetostroketotheopenpositionortofailtotheopenpositionisnotasafetyrelatedfunctionandarenotrequiredtobetested.NRCRecommendedAction:Sl-1.2:V-3463,IsolationValveforSITTest/RWTReturnHeader;2in.manually-operated,lockedclosedgatevalve.Accordingtothe.,flowdiagram,2998-G-078,Sheet'130,thetwooutboardcontainmentisolationvalvesforpenetration41,2I-SE-03-2Aand2B,arenormallyclosedandinparalleltoeachotherandinserieswithV-3463.TheValveProgramTablesindicatethatbothoftheoutboardvalvesareexercisedopenedquarterly.Furthermore,TechnicalSpecificationTable3.6-2forcontainmentisolationvalvesindicatesthatV-3463istestableduringplantoperation.Therefore,thelicenseeshouldexplainwhyV-3463cannotbeexercisedopenquarterly.St.LucieResponse:ThejustificationsfornottestingthisvalvequarterlyhasbeenreviewedinresponsetothisSE.Thevalveprogramtablehasbeenrevisedtoindicatethatmanually-operatedvalveV-3463istobetestedquarterly.Thecoldshutdownjustificationforthisvalvehasbeendeleted.NRCRecommendedAction:Sl-2.1:V-3114,V-3124,V-3134,andV-3144,LPSIcoldleginjectioncheckvalves;6in.checkvalves,normallyclosed.Thelicenseehasnotprovidedan'explanationofwhythevalvescannotbeverifiedclosedquarterly.Thereappeartobedrainortestconnectionsavailablebothimmediatelyupstreamandimmediatelydownstreamofeachofthesevalveswhichmaybeabletobeusedforbothaquarterlypart-strokeopentestandaquarterlytestforclosure.Therefore,thelicenseeshouldexplainwhysuchtestingcouldnotbeperformedquarterly.St.LucieResponse:ThejustificationfornottestingthesevalvesquarterlyhasbeenincludedinRevision1oftheSt.LucieUnit2ISTProgramSecondTenYearInterval.Thiscoldshutdownjustificationstatesthefollowing:"Duringnormalplantoperation,theLPSIPumpscannotdevelopsufficientdischargepressuretopumpthroughthesevalvestotheRCSandexercisethemintheopendirection.Theclosuretestscan23 onlybeperformedattheendoftheoutageafterthevalveshavebeenexercisedopenearlierbythepartialstrokeopentests."Thesearesimplecheckvalveswithnoexternalmeansofpositionindication.Tocyclethevalvesopenutilizingthedrainortestconnectionsupstreamanddownstreamofeachofthesevalvesduringnormalplantoperationisimpractical.ThedrainvalvedownstreamofthecheckvalvescannotbeopenedandusedasaflowpathforpartstrokingthecheckvalvesbecausetheyareexposedtothetotalvolumeandpressureoftheSIT.Theonlypracticalmeansofverifyingclosureisbyperformingaleaktestorbackflowtest.Thiswouldonlyconstituteavalidclosurestroketestofthevalvesonlyiftheycouldbeverifiedopenpriortothetest.Totestthecheckvalvesforclosuretheupstreamsideofthecheckvalvesmustbedepressurizedanddrainedinordertocollectthebackleakagethroughthecheckvalves.Performingthistestrequiresaconsiderableeffortsuchthattestingduringoperationwouldconstituteanunreasonableburdenontheplantstaff.Inaddition,thetestpersonnelmusthandleuptoseveralgallonsofcontaminatedwaterpertest,someofwhichcouldbeunderpressurewhenfirstvented.PerformingthistestprocedureeachquarterwouldresultinunnecessarypersonnelradiationexposuresandpossiblepersonnelcontaminationsNRCRecommendedAction:Sl-2.3:V-3545,V-3664,andV-3665,shutdowncoolingisolationandcrossconnectvalves,10in.motor-operated,lockedclosedgatevalves.ThelicenseeshouldexplainwhyafailureofV-3664andV-3665intheopenpositionwouldjeopardizetheintegrityoftheLPSISystemsincetheShutdowncoolingsystemvalvesV-3480,V-3481,V-3651andV-3652areimmediatelyupstreamandinterlockedclosedasdescribedforS1-2.2.Similarly,thelicenseeshoulddescribeunderwhatconditionsthecrossconnectvalveV-3545isopenedduringtheshutdowncoolingmodeofoperationandalsojustifythatitsfailureduringnormalplantoperationwouldjeopardizetheintegrityoftheLPSISystemsincetheitappearsthatonlyshutdowncoolingwouldbeaffectedandthatshutdowncoolingcouldstillbeaccomplishedwiththevalveopen.St.LucieResponse:ThejustificationsfornottestingthesevalvesquarterlyhavebeenreviewedinresponsetothisSE.ThevalveprogramtablehasbeenrevisedtoindicatethatshutdowncoolingisolationvalvesV-3664andV-3665aretobetestedquarterly.Thecoldshutdownjust).ficationforthesevalveshasbeendeleted.a24 TherevisedjustificationfornottestingshutdowncoolingcrossconnectvalveV-3545quarterlyhasbeenincludedinRevision1oftheSt.LucieUnit2ISTProgramSecondTenYearInterval.Thiscoldshutdownjustificationstatesthefollowing:"Thebreakerforthisvalveisrequiredtobedeenergized'xceptduringplantcoldshutdownorrefuelingmodestomeetpositionC.1toRegulatoryGuide1.63revision2.Thisistoprotectthemechanicalintegrityofthevalveselectricalpenetrationassemblyshouldthemaximumshort-circuitvstimeconditionoccurgivensinglerandomfailureofcircuitoverloadprotectiondevices."NRCRecommendedAction:MS-1.1:HCV-08-1A&B,mainsteamisolationvalves;34in.normallyopen,piston-operated'globevalves.ThelicenseeshouldindicateintheTableswhatisthefailuremodepositionofthesevalves.St.LucieResponse:TheTableshavebeenrevisedtoindicatethatthefailuremodeofthemainsteamisolationvalves,HCV-08-1A&B,istofailcloseinthecurrentrevisionoftheprogram.Thetablehasalsobeenrevisedtoindicatethatthevalvesaretobefailclosetestedduringthecoldshutdownclosestroketest.NRCRecommendedAction:MS-1.2:V-08130andV-08163,steam-drivenAFWpumpsteamsupplycheckvalves;4in.normallyopencheckvalves.Inthevalveprogramtables,thesecheckvalvesarepart-strokeexercisedtotheopenpositionquarterly,andfull-strokeexercisedtotheopenpositionatcoldshutdowns.ValvereliefrequestVR-31calledforpart-strokeexercisingtotheopenpositionmonthlyandfull-strokeexercisingatcoldshutdowns.Thelicenseeshouldclarifytheapparentdiscrepanciesinthetestingfrequencies.St.LucieResponse:ValvereliefrequestVR-31hasbeenrevisedtoindicatethatthepart-strokeexercisingtotheopenpositionofthesteam-drivenAFWpumpsteamsupplycheckvalves,V-08130andV-08163,istobeperformedquarterly.25