ML17228B059

Proposed TS Re Sdcs Min Flow Rate Requirements

ML17228B059
Person / Time
Site:	Saint Lucie
Issue date:	02/27/1995
From:	FLORIDA POWER & LIGHT CO.
To:
Shared Package
ML17228B058	List: ML17228B057 ML17228B059
References
NUDOCS 9503080425
Download: ML17228B059 (9)

Text

4St.LucieUnit2DocketNo.50-389ProposedLicenseAmendmentSDCSMinimumFlowRateReuirementsATTACHMENT3ST.LUCIEUNIT2hGQUCED-UPTECHNICALSPECIFICATIONPAGESPage3/49-8Page3/49-9PageB3/49-2Insert-A9503080425950227PDRADOCK05000389.PPDR REFUELINGOPERATIONS3/4.9..8SHUTDOWNCOOLINGANDCOOLANTCIRCULATIONHIGHWATERLEVELLIMITINGCONDITIONFOROPERATION3.9.8.lAtleastoneshutdowncoolingloopshallbeOPERABLEandinoperation."APPLICABILITY:NODE6whenthewaterlevelabovethetopofthereactorpressurevesselflangeisgreaterthanorequalto23feet.ACTION:WithnoshutdowncoolingloopOPERABLEandinoperation,suspendalloperationsinvolvinganincreaseinthereacto~decayheatloadorareductioninboronconcentrationoftheReactorCoolantSystemandwithin1hourinitiatecorrectiveactiontoreturntherequiredshutdowncoolinglooptoOPERABLEandoperatingstatusassoonaspossible.Closeallcontainmentpenetrationsprovidingdirectaccessfromthecontainmentatmospheretotheoutsideatmospherewithin4hours.~4.9.8.1Atleastonceper12hours:ja.Atleastoneshutdowncoolingloopshallbeverifiedtobeinoperation.Ib.Thetotalflowrateofreactorcoolanttothereactorpressurevesselshallbeverifiedtobegreaterthanorequalto3000gpm.**SURVEILLANCEREUIREMENTSAoperation-and-ci-rcu&ting-reactor-coo-l~nt~~Hewma~~uA-4o-3600-gm-at-AaM-once-pe~hR-houm.,,',*"Thereactorcoolantflowraterequirementmaybereducedto1850gpmifthe>followingconditionsaresatisfiedbeforethereducedrequirementis'mplemented:thereactorhasbeendeterminedtohavebeensubcriticalforatIleast125hours,themaximumRCStemperatureiss117'F,andthetemperature~ofCCWtotheshutdowncoolingheatexchangeriss87'F.Theshutdowncoolingloopmayberemovedfromoperationforupto1hourper8-hourperiodduringtheperformanceofCOREALTERATIONSinthevicinityofthereactorpressurevesselhotlegs.ST.LUCIE-UNITdy.3/49-8~emirI"Ibm p~wPpp,S0~.<+aQa~~4pftS4e~.ear.J'4~MA~p.~~hfAILS,},J(c

'hRFUELINGOPERATIONSLOWWATERVLIMITINGCONDITIONFOROPERATION3.9.8.2Twoindependentshutdownc'oolingloopsshallbeOPERABLEandatleastoneshutdowncoolingloopshallbeinoperation.A~PAM1:MIIAE'EhthIIhthtPIthpressurevesselflangeislessthan23feet.ACTION:a.WithlessthantherequiredshutdowncoolingloopsOPERABLE,within1hourinitiatecorrectiveactiontoreturntherequiredloopstoOPERABLEstatus,ortoestablishgreaterthanorequalto23feetofwaterabovethereactorpressurevesselflange,assoonaspossible.b.Withnoshutdowncoolingloopinoperation,suspendalloperationsinvolvingareductioninboronconcentrationoftheReactorCoolantSystemandwithin1hourinitiatecorrectiveactiontoreturntherequiredshutdowncoolinglooptooperation.Closeal,lcontainmentpenetrationsprovidingdirectaccessfromthecontainmentatmospheretotheoutsideatmospherewithin4hours.SURVEILLANCEREUIREHENTSW~~~~~n~utdow~co~erH+eM~)~Moperation-and-ci-rcu3ating-reactov-coolant-at~fkow-ate-of-greater-than-oi.-~ual-to<000-gpm-.at-.leastmnc~er-I&hou4.9.8.2Atleastonceper12hours:a.Atleastoneshutdowncoolingloopshallbeverifiedtobeinoperation.iib.Thetotalflowrateofreact:orcoolanttothereactorpressurevesselshallbeverifiedtobegreaterthanorequalto3000gpm.*reuirementmaybereducedto1850gpmifthe,*Thr~~~t~~coolantflowraterequrIfollowingconditionsaresatisfiedbeforethereucerehbsubcriticalforat~implemented:thereactorhasbeenendeterminedtoaveeenSterneratureis117'Pandthetemperature!least125hours,themaximumRCpI)ooanersofCCWtotheshutdowncoolingheatexchangersST.LUCIE-UNIT23/49-9AmendmentNo.pd,pd'

~1q~Op~OO~~ek'.1)tj~glPmo REFUELINGOPERATIONSBASES3/4.9.6MANIPULATORCRANETheOPERABILITYrequirementsfortherefuel1ngmachineensurethat:(Qmanipulatorcraneswillbeusedformovementoffuelassemblies,withorwithoutCEAs,(2)eachcranehassufficientloadcapacitytoliftafuelassembly,withorwithoutCEAs,and(3)thecoreinternalsandpressurevesselareprotectedfromexcessiveliftingforceintheeventtheyareinadvertentlyengagedduringliftingoperations.3/4.9.7CRANETRAVEL-SPENTFUELSTORAGEPOOLBUILDINGTherestrictiononmovementofloadsinexcessofthenominalweightofafuelassembly,CEAandassociatedhandlingtooloverotherfuelassembliesinthestoragepoolensuresthatintheeventthisloadisdropped(1)theactivityreleasewillbelimitedtothatcontainedinasinglefuelassembly,and(2)anypossibledistortionoffuelinthestoragerackswillnotresultinacriticalarray.Thisassumptionisconsistentwiththeactivityreleaseassumedinthesafetyanalyses.3/4.9.8SHUTDOWNCOOLINGANDCOOLANTCIRCULATIONTherequirementthatatleastoneshutdowncoolingloopbeinoperationensuresthat(1)sufficientcoolingcapacityisavailabletoremovedecayheatandmaintainthewaterinthereactorpressurevesselbelow140'FasrequiredduringtheREFUELINGMODE,and(2)sufficientcoolantcirculationismain-tainedthroughthereactorcoretominimizetheeffectsofaborondilutionincidentandpreventboronstratification.TherequirementtohavetwoshutdowncoolingloopsOPERABLEwhenthereislessthan23feetofwaterabovethereactorpressurevesselflangewithirradiatedfuelinthecoreensuresthatasinglefailureoftheoperatingshutdowncoolingloopwillnotresultinacompletelossofdecayheatremovalcapability.Withthereactorvesselheadremovedand23feetofwaterabovethereactorpressurevesselflangewithirradiatedfuelinthecore,alargeheatsinkisavailableforcorecooling,thusintheeventofafailureoftheoperatingshutdowncoolingloop,adequatetimeisprovidedtoinitiateemergencyrocedurestocoolthecore.happ4/3/4.9.9CONTAINMENTISOLATIONSYSTEMpgjggAP~TheOPERABILITYofthissystemensuresthatthecontainmentisolation84'gag'$valveswillbeautomaticallyisolatedupondetectionofhighradiationleves1withinthecontainment.TheOpERABILITYofthissystemisrequiredtorestrictthereleaseofradioactivematerialfromthecontainmentatmospheretotheenvironment.ST.LUCIE-UNIT2B3/49-2A~a~&lrKlo.

ile~a.~~r/1'+~an~~~~~<1(ki:~3pg("'<Yggy)g.'p<p~A~h";Q St.LucieUnit2DocketNo.50-389ProposedLicenseAmendmentSDCSMinimumFlowRateReuirementsWP9I'PWIINSERT-AThefootnoteprovidingforaminimumreactorcoolantflowrateofa1850gpmconsidersoneofthetwoRCSinjectionpointsforaSDCStraintobeisolated.Thespecifiedparametersinclude50gpmforflowmeasurementuncertainty,and3'FuncertaintyforRCSandCCWtemperaturemeasurements.Theconditionsofminimumshutdowntime,maximumRCStemperature,andmaximumtemperatureofCCWtotheshutdowncoolingheatexchangerareinitialconditionsspecifiedtoassurethatareductioninflowratefrom3000gpmto1800gpmwillnotresultinatemperaturetransientexceeding140'FduringconditionswhentheRCSwaterlevelisatanelevationa29.5feet.

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