ML17228A903

Proposed Tech Specs 3/4.6.2.1 & 3/4.6.2.3,adapting Combined Spec for Containment Spray & Cooling Sys Contained in Std TS for C-E Plants

ML17228A903
Person / Time
Site:	Saint Lucie
Issue date:	11/02/1994
From:	FLORIDA POWER & LIGHT CO.
To:
Shared Package
ML17228A902	List: ML17228A901 ML17228A903
References
NUDOCS 9411080182
Download: ML17228A903 (38)

Text

St.LucieUnit1andUnit2DocketNos.50-335and50-389ProposedLicenseAmendmentsContainmentSraandCoolinSstemsATTACHMENT3ST.LUCIEUNIT1MARKED-UPTECHNICALSPECIFICATIONPAGESPageVIPage3/46-15Insert-APage3/46-16Insert-BPage3/46-17PageB3/46-2Insert-CPageB3/46-39411080182'741102PDR'ADOCK05000335PDR INOEXLIMITINGCONDITIONSFOROPERATIONANDSURVEILLANCEREUIREMENTSSECTIONPAGE3/4.6CONTAINMENTSYSTEMS3/4.6.13/4.6.2$63/4.6.33/4.6.43/4.6.53/4.6.6ShieldBuildingVentilationSystem.......ShieldBuildingIntegrity................~hieldBuildingStructuralIntegrity..';..~~~~~~~~~~~~CONTAINMENTVESSEL.~~-..~~....~~.~~~~~~.~~~~~~~-~~-~~ContainmentVesselIntegrity.............ContainmentLeakage......................ContainmentAirLocks.....;.........,................InternalPressure....................................AirTemperature...................-.."..ContainmentVesselStructuralIntegrity..DEPRESSURIZATIONANDCOOLINGSYSTEMS.....ContainmentSpraySyetedg..............prayAdditiveSystem.atHameCONTAINMENTISOLATIONVALVES......-................--COMBUSTIBLEGASCONTROL..........................---.HydrogenAnalyzers...................""""."....ElectricHydrogenRecombiners-W.......VACUUMRELIEFVALVES..........-......-...SECONDARYCONTAINMENT..........-.......-........'.3/46-13/46-13/46-23/46-103/46-123/46-133/46-143/46-153/46-153/46-16a3/46-183/46-233/46-233/46-243/46-263/46-273/46-273/46-303/46-31ST.LUCIE-UNIT1VI3/4.7PLANTSYSTEMS3/4.7.1.TURBINECYCLE......................;............afetyValves....................................SAuxiliaryFeedwaterSystem................--.."CondensateStorageTank.........ctivity.........................AHainSteamLineIsolationValves.SecondaryWaterChemistry.......................3/43/43/43/43/43/43/4Amendment7-17-17-4?-?7-97-10No.~~

rq~~~(~lou~~.)Q~~.,AA240Vf' CONTAINMENTSYSTEMS3/4.6.2DEPRESSURIZATIONANDCOOLINGSYSTEMSCONTAINMENTSPRAYSYSTEM~gCooliHc1nsartLIMITINGCONDITIONFOROPERATIONP,EFLUX+HISsNT-3.2.1TwoindependentcontainmentspraysystemsshallbeOPERABLEwithhspraysystemcapableoftakingsuctionfromtheRWTonContainmeSprayActuationSignalandautomaticallytransferrgsuctiontotcontainmentsumponaRecirculationActuatiSignal.Eachspraysystelowpathfromthecontainmentsumps1beviaanOPERABLEshutdowncoingheatexchanger.APPLICABILITY:MODES1,2d3*.ACTION:a.WithonntainmentraysystinoperableandallfourconmentfancersOPERABLE,toretheinoperablepraysystemPERABLEstatuswithindaysorbeinHOTSHUTDOwithinthenext12hours.b.Witonecontainmentspraysysteminoperableandcontainmentncoolerinoperable,restoreeithertheinoperableraysystemortheinoperablefancoolertoOPERABLEstatuswin72hoursorbeinHOTSHUTDOWNwithinthenext12hours.SURVEILLANCEREUIREMENTSC4.6.2.1EachcontainmentspraysystemshallbedemonstratedOPERABLE:a.b.Atleastonceper31daysbyverifyingthateachvalve(manual,poweroperatedorautomatic)intheflowpaththatisnotlocked,sealed,orotherwisesecuredinposition,ispositionedtotakesuctionfromtheRWTonaContainmentPressure--HighHightestsignal.IsByverifyingthatonrecirculationflow,eachspraypumpdevelopsadischargepressureof>200psig,whentestedpursuanttoSpecification4'9.5.ST.LUCIE-UNIT13/46-15.%acndmentNo.pg ape9'i.~Its)~'~~A'l3~>dj'i@I'.i<.7ARkJ:3<--c4(Bg&+3'~.'-~~e~@ow~e<<d St.LucieUnit1andUnit2DocketNos.50-335and50-389ProposedLicenseAmendmentsContainmentSraandCoolinSstemsINSERT-A3.6.2.1TwocontainmentspraytrainsandtwocontainmentcoolingtrainsshallbeOPERABLE.APPLICABILITY:ContainmentSpraySystem:MODES1,2,andMODE3withPressurizerPressure21750psia.ContainmentCoolingSystem:MODES1,2,and3.ACTION%Modes12and3withPressurizerPressurea1750sia:a.Withonecontainmentspraytraininoperable,restoretheinoperablespraytraintoOPERABLEstatuswithin72hoursandwithin10daysfrominitialdiscoveryoffailuretomeettheLCO;otherwisebeinMODE3withinthenext6hoursandinMODE4withinthefollowing54hours.b.Withonecontainmentcoolingtraininoperable,restoretheinoperablecoolingtraintoOPERABLEstatuswithin7daysandwithin10daysfrominitialdiscoveryoffailuretomeettheLCO(otherwisebeinMODE3withinthenext6hoursandinMODE4withinthefollowing6hours.c.Withonecontainmentspraytrainandonecontainmentcoolingtraininoperable,concurrentlyimplementACTIONSa.andb.ThecompletionintervalsforACTIONa.andACTIONb.shallbetrackedseparatelyforeachtrainstartingfromthetimeeachtrainwasdiscoveredinoperable.d.Withtwocontainmentcoolingtrainsinoperable,restoreonecoolingtraintoOPERABLEstatuswithin72hours;otherwisebeinMODE3withinthenext6hoursandinMODE4withinthefollowing6hours.e.Withtwocontainmentspraytrainsinoperableoranycombinationofthreeormoretrainsinoperable,enterLCO3.0.3immediately.2.Mode3withPressurizerPressure(1750sia:a.Withonecontainmentcoolingtraininoperable,restoretheinoperablecoolingtraintoOPERABLEstatuswithin72hours;otherwisebeinMODE4withinthenext6hours.b.Withtwocontainmentcoolingtrainsinoperable,enterLCO3.0.3immediately.

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SURVIANURNCouec.Atleastonce,per18months,duringshutdown,by:1.VerifyingthateachautomaticvalveintheflowpathactuatestoitscorrectpositiononaCSAStestsignal.2.VerifyingthateachspraypumpstartsautomaticallyonaCSAStestsignal.3.Verifyingthatuponarecirculationactuationsignal,thecontainmentsumpisolationvalvesopenandthatarecirculationmodeflowpathviaanOPERABLEshutdowncoolingheatexchangerisestablished.d.Atleastonceper10yearsbyperforminganairorsmokeflowtestthrougheachsprayheaderandverifyingeachspraynozzleisunobstructed.ST.LUCIE-UNIT13/46-16AmendmentNo.,

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St.LucieUnit1andUnit2DocketNos.50-335and50-389ProposedLicenseAmendmentsContainmentSraandCoolinSstemsINSERT-B4.6.2.1.1EachcontainmentcoolingtrainshallbedemonstratedOPERABLE:a0Atleastonceper31daysby:1.Startingeachcoolingtrainfanunitfromthecontrolroomandverifyingthateachunitoperatesforatleast15minutes,and2.Verifyingacoolingwaterflowrateofgreaterthanorequalto1200gpmtoeachcoolingunit.b.Atleastonceper18months,duringshutdown,byverifyingthateachcontainmentcoolingtrainstartsautomaticallyonanSIAStestsignal.

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~~~NTAINMENTSYSTEMSCONNMENTCOOLINGSYSTEMLIMITINGNDITIONFOROPERATION.6.2.3FourctainmentfancoolersshallbeOPERABLE.PPLICABILITY:MOS1,2and3.CTIONb.Withonecontainmentfancooleriperableandonecontainmentspraysysteminoperable,restoreeithertheinoperablefancoolerortheinoperablespyystemtoOPERABLEstatusUTDOWNwithinthenext12within72hoursorbeinHOThours.a.WithonecontaientfancoolerinoperablendbothcontainmentspraysystemsOPBLE,restoretheinopablefancoolertoOPERABLEstatuswiin30daysorbeinOTSHUTDOWNwithinthenext12hours.SURVEILLANCEREUIREMENTS4.6.2.3EachcontaientfancoolrshallbedemonstrateOPERABLEatleastonceper31dsonaSTAGGEREDTESTBASISby:a.Startgeachunitromthecontrolroom,b.Vefyingthatachunitoperatesforatleast15minut,andc.erifyinggcoolingwaterflowrateof>1200gpmtoeach.coolinghit.ST.LUCIE-UNIT13/46-17AmendmentNo.

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CONTAINMENTSYSTEMS0BASES3/4.6.1.4INTERNALPRESSUREThelimitationsoncontainmentinternalpressureensure'that1)thecontainmentstructuralispreventedfromexceedingitsdesignnegativepressuredifferentialwithrespecttotheannulusatmosphereof0.70psiand2)thecontainmentpeakpressuredoesnotexceedthedesignpressureof44psigduringsteamlinebreakaccidentconditions.Themaximumpeakpressureobtainedfromasteamlinebreakaccidentis41.6psig.Thelimitof2.4psigforinitialpositivecontainmentpressurewilllimitthetotalpressureto44.0psigwhichisthedesignpressureandisconsistentwiththeaccidentanalyses.'/4.6.1.5AIRTEMPERATUREThelimitationoncontainmentairtemperatureensuresthatthecontainmentvesseltemperaturedoesnotexceedthedesigntemperatureof264'FduringLOCAconditions.Thecontainmenttemperaturelimitisconsisentwiththeaccidentanalyses.3/4.6.1.6CONTAINMENTVESSELSTRUCTURALINTEGRITYThislimitationensuresthatthestructuralintegrityofthecon-tainmentsteelvesselwillbemaintainedcomparabletotheoriginaldesignstandardsforthelifeofthefacility.Structuralintegrityisrequiredtoensurethatthevesselwillwithstandthemaximumpressureof41.6psigintheeventofasteamlinebreakaccident.Av'isualinspectioninconjunctionwithTypeAleakagetestissufficienttodemonstratethiscapability.3/4.6.2DEPRESSURIZATIONANOCOOLINGSYSTEMS3/4.6.2.1CONTAINMENTSPRAYYSTE,~cmL.(W~RABILITYofthecontainmentspraysystemensuren-otainmentdepressu'ndcoolingcapbilit'vailableintheeventofaLOCA.Thepressurenresultantlowercontainmentleakagerateareco'itheassump'intheaccidentanalyseeflic.E.Udge'xA%CY-C-ST.LUCIE-UNIT1B3/46-2 4~eIIAoO~g~';v~ciJ-~p)lg~pr~z~<a'<<"~>

St.LucieUnit1andUnit2DocketNos.50-335and50-389ProposedLicenseAmendmentsContainmentSraandCoolinSstemsINSERT-CPSL1TheOPERABILITYofthecontainmentsprayandcoolingsystemsensuresthatdepressurizationandcoolingcapabilitywillbeavailabletolimitpost-accidentpressureandtemperatureinthecontainmenttoacceptablevalues.DuringaDesignBasisAccident(DBA),atleasttwocontainmentcoolingtrainsortwocontainmentspraytrains,oroneofeach,iscapableofmaintainingthepeakpressureandtemperaturewithindesignlimits.Onecontainmentspraytrainhasthecapabilitygincon)unctionwiththeSprayAdditiveSystem,toremoveiodinefromthecontainmentatmosphereandmaintainconcentrationsbelowthoseassumedinthesafetyanalyses.Toensurethattheseconditionscanbemetconsideringsingle-failurecriteria,twospraytrainsandtwocoolingtrainsmustbeOPERABLE.The72houractionintervalspecifiedinACTION1.aandACTION1.d,andthe7dayactionintervalspecifiedinACTIONl.btakeintoaccounttheredundantheatremovalcapabilityandtheiodineremovalcapabilityoftheremainingoperablesystems,andthelowprobabilityofaDBAoccurringduringthisperiod.The10dayconstraintforACTIONSl.aand1.bisbasedoncoincidententryintotwoACTIONconditions(specifiedinACTION1.c)coupledwiththelowprobabilityofanaccidentoccurringduringthistime.Ifthesystem(s)cannotberestoredtoOPERABLEstatuswithinthespecifiedcompletiontime,alternateactionsaredesignedtobringtheunittoamodeforwhichtheLCOdoesnotapply.Theextendedinterval(54hours)specifiedinACTIONl.atobeinMODE4includes48hoursofadditionaltimeforrestorationoftheinoperableCStrain,andtakesintoconsiderationthereduceddrivingforceforareleaseofradioactivematerialfromtheRCSwheninMODE3.WithtwocontainmentspraytrainsoranycombinationofthreeormorecontainmentsprayandcontainmentcoolingtrainsinoperableinMODES1,2,orMode3withPressurizerPressurea1750psia,theunitisinaconditionoutsidetheaccidentanalysesandLCO3.0.3mustbeenteredimmediately.InMODE3withPressurizerPressure(1750psia,containmentsprayisnotrequired.ThespecificationsandbasesforLCO3.6.2.1areconsistentwithNUREG-1432,Revision0(9/28/92),Specification3.6.6A(ContainmentSprayandCoolingSystems;CredittakenforiodineremovalbytheContainmentSpraySystem),andtheplantsafetyanalyses.

il<I4 CONTAINMENTSYSTEMSBASES34,6.2.2SPRAYAODITIVESYSTEMTheOPERABILITYofthesprayadditivesystemensuresthatsuffi-cientNaOHisaddedtothecontainmentsprayintheeventofaLOCA.ThelimitsonNaOHvolumeandconcentrationensureapHvalueofbetween8.5and11.0forthesolutionrecirculatedwithincontainmentafteraLOCA.ThispHbandminimizestheevolutionofiodineandminimizestheeffectofchlorideandcausticstresscorrosiononmechanicalsystemsandcomponents.Thecontainedwatervolumelimitincludesanallowanceforwaternotusablebecauseoftankdischargelinelocationorotherphysicalcharacteristics.Theseassumptionsareconsistentwiththeiodineremovalefficiencyassumedintheaccidentanalyses.Ntg34.6.2.3GN98NMEN~G~REAgcc.~mSEE-KgbTheOPERABILITYofntcoolingsystemensuresthat1)thecontainmentairperaturewiintainedwithinlimitsduringnormaloperat'and2)adequateheatremovacityisavailablewhenopedinconjunctionwiththecontainmentspraemsduringpoCAconditions.3/4.6.3CONTAINMENTISOLATIONVALVESTheOPERABILITYofthecontainmentisolationvalvesensuresthatthecontainmentatmospherewillbeisolatedfromtheoutsideenvironmentintheeventofareleaseofradioactivematerialtothecontainmentatmos-phereorpressurizationofthecontainment.ContainmentisolationwithinthetimelimitsspecifiedensuresthatthereleaseofradioactivematerialtotheenvironmentwillbeconsistentwiththeassumptionsusedintheanalysesforaLOCA.Thisincludesthecontainmentpurgeinletandoutletvalves.~j34.6.4COMBUSTIBLEGASCONTROLTheOPERABILITYoftheequipmentandsystemsrequiredforthedetectionandcontrolofhydrogengasensuresthatthisequipmentwillbeavailabletomaintainthehydrogenconcentrationwithincontainmentbelowitsflamnablelimitduringpost-LOCAconditions.Eitherrecombinerunitiscapableofcontrollingtheexpectedhydrogengenerationassociatedwith1)zirconium-waterreactions,2)radiolyticdecompositionofwaterand3)corrosionofmetalswithincontainment.Thecontainmentfancoolersareusedinasecondaryfunctiontoensureadequatemixingofthecontainmentatmospherefollowing.aLOCA.Thismixingactionwillpreventlocalizedaccumulationsofhydrogenfromexceedingtheflammablelimit.ST.LUCIE-UNIT1B3/46-3AmendmentNo.29,<<W

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~~St.LucieUnit1andUnit2DocketNos.50-335and50-389ProposedLicenseAmendmentsContainmentSraandCoolinSstemsATTACHMENT4ST~LUCIEUNIT2MARKED-UPTECHNICALSPECIFICATIONPAGESPageVIIPage3/46-15PageInsert-APage3/46-16Insert-BPage3/46-18PageB3/46-2Insert-CPageB3/46-3 INDEXLIMITINGCONDITIONSFOROPERATIONANDSURVEILLANCEREUIREMENTSSECTION3/4.6CONTAINMENTSYSTEMS3/4.6.1PRIMARYCONTAINMENTCONTAINMENTINTEGRITY..........CONTAINMENTLEAKAGE..................................CONTAINMENTAIRLOCKS.................INTERNALPRESSURE.............AIRTEMPERATURE...............CONTAINMENTVESSELSTRUCTURALINTEGRITY.CONTAINMENTVENTILATIONSYSTEM.....PAGE3/46-13/46"23/46-93/46-113/46-123/46-133/46-143/4.6.2DEPRESSURIZATIONANDCOOLINGSYSTEMSCONTAINMENTSPRAYSYSTEa<GSLltl4IODINEREMOVALSYSTEM.....~~~~~~~~~~~~~~~~~~~3/4615~~~~~~~~~~~~~~~3/46173/4.6.3CONTAINMENTISOLATIONVALVES...........3/4.6.4COMBUSTIBLEGASCONTROL3/46-19HYDROGENANALYZERS....3/46.-24ELECTRICHYDROGENRECOMBINERS"M.................3/46-253/4.6.5VACUUMRELIEFVALVES..................................3/46-263/4.6.6SECONDARYCONTAINMENTSHIELDBUILDINGVENTILATIONSYSTEM...................3/46-27SHIELDBUILDINGINTEGRITY.........................-3/463OSHIELDBUILDINGSTRUCTURALINTEGRITY.................3/4631ST.LUCIE-UNIT2VII a++>"-W@'A~G5>~aip~.~N=BJVL CONTAINMENTSYSTEMS3/4.6.2DEPRESSURIZATIONANDCOOLINGSYSTEMSCONTAINMENTSPRAYSYSTEM~~CootLHtLIMITINGCONDITIONFOROPERATION3..1TwoindependentcontainmentspraysystemsshaleOPERABLEwieachspraysycapableoftakingsuctionfromtheRWT~haContainprayActuationSigandautomaticallytransferringuctiontotontainmentsumponaSumpReclationActuationSignalEachsp~rsystemflowpathfromthecontainmentshallbeviaan0RABLEhKtdowncoolingheatexchanger.APPLICABILITY:MOOFS1,2,and3".ACTION:Withonecontaitspraysysteminoperable,restorethe'rablespraysystemtoBLEstatuswithin72hoursorbeinatleastHONOSYwithinthen-6hours;restoretheinoperablespraysystemtoOPERABLEstinthenext48hoursorbeinCOLDSHUTDOWNwithinthefollowing30hSURVEILLANCEREUIREMENTS4.6.2.1b.C.EachcontainmentspraysystemshallbedemonstratedOPERABLE:Atleastonceper31daysbyverifyingthateachvalve(manual,poweroperated,orautomatic)intheflowpaththatisnotlocked,sealed,or.otherwisesecuredinposition,ispositionedtotakesuctionfromtheRWTonaContainmentPressure-High-Hightestsignal.Byverifying,thatonrecirculationflow,eachpumpdevelopsadischargepressureofgreaterthanorequalto200psigwhentestedpursuanttoSpecification4.0.5.Atleastonceper18months,duringshutdown,by:l.VerifjjingthateachautomaticvalveintheflowpathactuatestoitscorrectpositiononaCSAStestsignal.2.VerifyingthatuponaRecirculationActuationTestSignal(RAS),thecontainmentsumpisolationvalvesopenandthatarecircula-tionmodeflowpathviaanOPERABLEshutdowncoolingheatexchangerisestablished.~hen-pressure-zm~~u%EL&[EST.LUCIE"UNIT23/46"15AmendmentNo.

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St.LucieUnit1andUnit2DocketNos.50-335and50-389ProposedLicenseAmendmentsContainmentSraandCoolinSstemsINSERT-A3.6.2.1TwocontainmentspraytrainsandtwocontainmentcoolingtrainsshallbeOPERABLE.APPLICABILITY:ContainmentSpraySystem:MODES1,2,andMODE3withPressurizerPressurea1750psia.ContainmentCoolingSystem:MODES1,2,and3.ACTION:Modes12and3withPressurizerPressureh1750sia:a.Withonecontainmentspraytraininoperable,restoretheinoperablespraytraintoOPERABLEstatuswithin72hoursandwithin10daysfrominitialdiscoveryoffailuretomeettheLCO;otherwisebeinMODE3withinthenext6hoursandinMODE4withinthefollowing54hours.b.Withonecontainmentcoolingtraininoperable,restoretheinoperablecoolingtraintoOPERABLEstatuswithin7daysandwithin10daysfrominitialdiscoveryoffailuretomeettheLCO;otherwisebeinMODE3withinthenext6hoursandinMODE4withinthefollowing6hours.c.Withonecontainmentspraytrainandonecontainmentcoolingtraininoperable,concurrentlyimplementACTIONSa.andb.ThecompletionintervalsforACTIONa.andACTIONb.shallbetrackedseparatelyforeachtrainstartingfromthetimeeachtrainwasdiscoveredinoperable.d.Withtwocontainmentcoolingtrainsinoperable,restoreonecoolingtraintoOPERABLEstatuswithin72hours;otherwisebeinMODE3withinthenext6hoursandinMODE4withinthefollowing6hours.e.Withtwocontainmentspraytrainsinoperableoranycombinationofthreeormoretrainsinoperable,enterLCO3.0.3immediately.2.Mode3withPressurizerPressure<1750sia:a.Withonecontainmentcoolingtraininoperable,restoretheinoperablecoolingtraintoOPERABLEstatuswithin72hours;otherwisebeinMODE4withinthenext6hours.b.Withtwocontainmentcoolingtrainsinoperable,enterLCO3.0.3immediately fI

~~CONTANMENTSYSHSSURVILANCRURHNTSontinued3.VerifyingthateachspraypumpstartsautomaticallyonaCSAStestsignal.d.Atleastonceper10yearsbyperforminganairorsmokeflowtestthrougheachsprayheaderandverifyingeachspraynozzleisunobstructed.ST.LUCIE-UNIT23/46-16AmendmentNo.

pJ~~'(rqP.~A' St.LucieUnit1andUnit2DocketNos.50-335and50-389ProposedLicenseAmendmentsContainmentSraandCoolinSstemsINSERT-B4.6.2.1.1EachcontainmentcoolingtrainshallbedemonstratedOPERABLE:a0Atleastonceper31daysby:1.Startingeach.coolingtrainfanunitfromthecontrolroomandverifyingthateachunitoperatesforatleast15minutes,and2.Verifyingacoolingwaterflowrateofgreaterthanorequalto1200gpmtoeachcoolingunit.b.Atleastonceper18months,duringshutdown,byverifyingthateachcontainmentcoolingtrainstartsautomaticallyonanSIAStestsignal.

Isp$4'\+.e QNTAINMENTSYSTEMSCONTMENTCOOLINGSYSTEMLIMITINGCODITIONFOROPERATION3.6.2.3FourindepdentcontainmentfancoolersshallbeERABLE.APPLICABILITY:MODES1,2,and3.ACTION:Withoneoftheaboverequiredntainmentfanoolersinoperable,restoretheinoperablecontainmentfancooleroOPERABstatuswithin72hoursorbeinatleastHOTSTANDBYwithinthenext6hos;restoretheinoperablecontain-mentfancoolertoOPERABLEstatuswitSHUTDOWNwithinthefollowing30hourthenext48hoursorbeinCOLDSURVEILLANCEREUIREMENTS4.6.2.3a0b.EachcontainmenfancoolershallbedemonstrtedOPERABLE:Atleastceper31dayby:artingeachfyncoolerfromthecontrolroomdverifyingthateachfancooleroperatesforatleast15mines.Verifyingcoolingwaterflowrateofgreaterthanorqualto1200gptoeachfancooler.Atleastonceper18monthsbyverifyingthateachfancoolerstasautomaticallyonanSIAStestsignal;ST.LUCIE-UNIT2.3/46-18

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CONTAINMENTSYSTEMSBASES3/4.6.1.5AIRTEMPERATUREThelimitationoncontainmentaverageairtemperatureensuresthatthecontainmenttemperaturedoesnotexceedthedesigntemperatureof264Fduringsteamlinebreakconditionsandisconsistentwiththesafetyanalyses.3/.6.1.6CONTAINMENTVESSELSTRUCTURALINTEGRITYThislimitationensuresthatthestructuralintegrityofthecontainmentsteelvesselwillbemaintainedcomparabletotheoriginaldesignstandardsforthelifeofthefacility.Structuralintegrityisrequiredtoensurethatthevesselwillwithstandthemaximumpressureof44.0psigintheeventofasteamlinebreakaccident.AvisualinspectioninconjunctionwithTypeAleakagetest'ssufficienttodemonstratethiscapability.3/4.6.1.7CONTAINMENTVENTILATIONSYSTEMThe48-inchcontainmentpurgesupplyandexhaustisolationvalvesarerequiredtobeclosedduringplantoperationsincethesevalveshavenotbeendemonstratedcapableofclosingduringaLOCAorsteamlinebreakaccident.Maintainingthesevalvesclosedduringplantoperationsensuresthatexcessivequantitiesofradioactivematerialswillnotbereleasedviathecontainmentpurgesystem.Toprovideassurancethatthe48-inchvalvescannotbeinadvertentlyopened,theyaresealedclosedinaccordancewithStandardReviewPlan6.2.4whichincludesdevicestolockthevalveclosed,orpreventpowerfrombeingsuppliedtothevalveoperator.Theuseofthecontainmentpurgelinesisrestrictedtothe8-inchpurgesupplyandexhaustisolationvalvessince,unlikethe48-inch'alves,the8-inchvalveswillcloseduringaLOCAorsteamlinebreakaccidentandthereforethesiteboundarydoseguidelinesof10CFRPart100wouldnotbeexceededintheeventofanaccidentduringpurgingoperations.Leakageintegritytestswithamaximumallowableleakagerateforpurgesupplyandexhaustisolationvalveswillprovideearlyindicationofresilientmaterialsealdegradationandwillallowtheopportunityforrepairbeforegrossleakagefailuredevelops'he0.60Lleakagelimitshallnotbeexceededwhentheleakageratesdetermined3ytheleakageintegritytestsofthesevalvesareaddedtothepreviouslydeterminedtotalforallvalvesandpenetrationssubjecttoTypeBandCtests.3/4.6.2DEPRESSURIZATIONANDCOOLINGSYSTEMS3/4.6.2.1CONTAINMENTSPRAYSYSTEthILITYoftheContainmentSpraySystemensuresnepressurizationan~bilitywillb'ntheeventofaOCA.ThepressurereductioontainmentleakagerateareonsistentumptionsusedinthesafetyanaysST.LUCIE-UNIT2B3/46-2

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St.LucieUnit1andUnit2DocketNos.50-335and50-389ProposedLicenseAmendmentsContainmentSraandCoolinSstemsINSERT-CPSL2TheOPERABILITYofthecontainmentsprayandcoolingsystemsensuresthatdepressurizationandcoolingcapabilitywillbeavailabletolimitpost-accidentpressureandtemperatureinthecontainmenttoacceptablevalues.DuringaDesignBasisAccident(DBA),atleasttwocontainmentcoolingtrainsortwocontainmentspraytrains,oroneofeach,iscapableofmaintainingthepeakpressureandtemperaturewithindesignlimits.OnecontainmentspraytrainhasthecapabilltyginconjunctionwiththeZodineRemovalSystem,toremoveiodinefromthecontainmentatmosphereandmaintainconcentrationsbelowthoseassumedinthesafetyanalyses.Toensurethattheseconditionscanbemetconsideringsingle-failurecriteria,twospraytrainsandtwocoolingtrainsmustbeOPERABLE.The72houractionintervalspecifiedinACTIONl.aandACTIONl.d,andthe7dayactionintervalspecifiedinACTION1.btakeintoaccounttheredundantheatremovalcapabilityandtheiodineremovalcapabilityoftheremainingoperablesystems,andthelowprobabilityofaDBAoccurringduringthisperiod.The10dayconstraintforACTIONSl.aand1.bisbasedoncoincidententryintotwoACTIONconditions(specifiedinACTION1.c)coupledwiththelowprobabilityofanaccidentoccurringduringthistime.Ifthesystem(s)cannotberestoredtoOPERABLEstatuswithinthespecifiedcompletiontime,alternateactionsaredesignedtobringtheunittoamodeforwhichtheLCOdoesnotapply.Theextendedinterval(54hours)specifiedinACTIONl.atobeinMODE4includes48hoursofadditionaltimeforrestorationoftheinoperableCStrain,andtakesintoconsiderationthereduceddrivingforceforareleaseofradioactivematerialfromtheRCSwheninMODE3.WithtwocontainmentspraytrainsoranycombinationofthreeormorecontainmentsprayandcontainmentcoolingtrainsinoperableinMODES1,2,orMode3withPressurizerPressurea1750psia,theunitisinaconditionoutsidetheaccidentanalysesandLCO3.0.3mustbeenteredimmediately.InMODE3withPressurizerPressure<1750psia,containmentsprayisnotrequired.ThespecificationsandbasesforLCO3.6.2.1areconsistentwithNUREG-1432,Revision0(9/28/92),Specification3.6.6A(ContainmentSprayandCoolingSystems;CredittakenforiodineremovalbytheContainmentSpraySystem),andtheplantsafetyanalyses.

JII CONTAIWENTSYSTemBASESCONTAINMENTSPRAY,SYST~ContinuedgagC.00Lll44'mentSpraySystemandtheContainmentCoolingSystepost-accidentcooecontainmentatmosphere.wev,heContainmentSpraySystemalsoprovidesame~forovfgiodinefromthecontainmentatmosphereandthereforetheremenestoringaninoperablespraysystemtoBsatushavebeenmaintainedcontewiththatasserinoperableESfequipment.3/4.6.2.2IOOINEREMOYALSYSTBITheOPERABILITYoftheIodineRemovalSystemensuresthatsufffcfentN>H~isaddedtothecontainmentsprayfntheeventofaLOCA.ThelfmftsonN2H~volumeandconcentrationensureaminimumof50ppmofN>H~concentrationavailablefnthesprayforamfnimumof6.5hoursperpumpforatotalof13hourstoprovideassumediodinedecontaminationfactorsonthicontafnment.atmosphereduringsprayfunctionandensureapHvalueofbetween7.0andB.Q-forthesolutionrecirculatedwithincontainmentafteraLOCA.ThispHbandminimizestheevolutfonofiodfneandminimizestheeffectofchlorideandcausticstresscorrosiononmechanicalsystemsandcomponents.Thecontainedwatervolumelimitincludesanallowanceforwaternotusablebecauseoftankdischargelinelocatfonorotherphysicalcharacterfstfcs.Theseassumptionsareconsistentwiththeiodineremovalefficiencyassumedinthesafetyanalyses.3/4.6.2.3tR+EHHEN~OOt&ERNE.~~DEl.i'MpheOPERABILITYoftheContainmentCoolingSystemensuresthat(1)containairtemperaturewillbemaintainedwithfnlimitsdurinrmaloperation,an)adequateheatremovalcapacityfsavailabenoperatedinconjunctionwfteContainmentSpraySystemsdurfnst-LOCAconditions.TheContainmentCoolfngyamandtheafnmentSpraySystemprovidepost-accidentcoolingofthecont~amsphere.Asaresultofthiscoolingcapability,theallowable~u-omvicetimerequirementsfortheContainmentCoolingSystemh~~eenappropradjusted.Theallowableout-of-servicetimerecerementsfortheContainmenraySystemandContainmentCoolingSystvebeenmaintainedconsistentwittassignedotherinoperableEquipmentsincetheContainmentSpraySystemaontainmentCoolinternalsoprovideamechanismforremovingiodinefromtconmentatmosphere.ST.LUCIE-UNIT2S3/46-3AmendmentNo.

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