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.50-389ProposedLicenseAmendment SDCSMinimumFlowRateReuirements ATTACHMENT 3ST.LUCIEUNIT2hGQUCED-UP TECHNICAL SPECIFICATION PAGESPage3/49-8Page3/49-9PageB3/49-2Insert-A9503080425 950227PDRADOCK05000389.PPDR REFUELING OPERATIONS 3/4.9..8SHUTDOWNCOOLINGANDCOOLANTCIRCULATION HIGHWATERLEVELLIMITINGCONDITION FOROPERATION 3.9.8.lAtleastoneshutdowncoolingloopshallbeOPERABLEandinoperation."

APPLICABILITY:

NODE6whenthewaterlevelabovethetopofthereactorpressurevesselflangeisgreaterthanorequalto23feet.ACTION:WithnoshutdowncoolingloopOPERABLEandinoperation, suspendalloperations involving anincreaseinthereacto~decayheatloadorareduction inboronconcentration oftheReactorCoolantSystemandwithin1hourinitiatecorrective actiontoreturntherequiredshutdowncoolinglooptoOPERABLEandoperating statusassoonaspossible.

Closeallcontainment penetrations providing directaccessfromthecontainment atmosphere totheoutsideatmosphere within4hours.~4.9.8.1Atleastonceper12hours:ja.Atleastoneshutdowncoolingloopshallbeverifiedtobeinoperation.I b.Thetotalflowrateofreactorcoolanttothereactorpressurevesselshallbeverifiedtobegreaterthanorequalto3000gpm.**SURVEILLANCE REUIREMENTS Aoperation-and-ci-rcu

&ting-reactor-coo-l~nt~~Hewma~~

uA-4o-3600-g m-at-AaM-once-pe~hR-houm.

,,',*"Thereactorcoolantflowraterequirement maybereducedto1850gpmifthe>following conditions aresatisfied beforethereducedrequirement is'mplemented:

thereactorhasbeendetermined tohavebeensubcritical foratIleast125hours,themaximumRCStemperature iss117'F,andthetemperature

~ofCCWtotheshutdowncoolingheatexchanger iss87'F.Theshutdowncoolingloopmayberemovedfromoperation forupto1hourper8-hourperiodduringtheperformance ofCOREALTERATIONS inthevicinityofthereactorpressurevesselhotlegs.ST.LUCIE-UNITdy.3/49-8~emirI"Ibm p~wPpp,S0~.<+aQa~~4pftS4e~.ear.J'4~MA~p.~~hfAILS,},J(c

'hRFUELINGOPERATIONS LOWWATERVLIMITINGCONDITION FOROPERATION 3.9.8.2Twoindependent shutdownc'oolingloopsshallbeOPERABLEandatleastoneshutdowncoolingloopshallbeinoperation.

A~PAM1:MIIAE'EhthIIhthtPIthpressurevesselflangeislessthan23feet.ACTION:a.WithlessthantherequiredshutdowncoolingloopsOPERABLE, within1hourinitiatecorrective actiontoreturntherequiredloopstoOPERABLEstatus,ortoestablish greaterthanorequalto23feetofwaterabovethereactorpressurevesselflange,assoonaspossible.

b.Withnoshutdowncoolingloopinoperation, suspendalloperations involving areduction inboronconcentration oftheReactorCoolantSystemandwithin1hourinitiatecorrective actiontoreturntherequiredshutdowncoolinglooptooperation.

Closeal,lcontainment penetrations providing directaccessfromthecontainment atmosphere totheoutsideatmosphere within4hours.SURVEILLANCE REUIREHENTS W~~~~~n~utdow~

co~erH+eM~)~

Moperation-and-ci-rcu3 ating-reactov-coolant-at~fkow-ate-of-greater-than-oi.-

~ual-to<000-gpm-.at-.leastmnc~er-I&hou 4.9.8.2Atleastonceper12hours:a.Atleastoneshutdowncoolingloopshallbeverifiedtobeinoperation.

iib.Thetotalflowrateofreact:orcoolanttothereactorpressurevesselshallbeverifiedtobegreaterthanorequalto3000gpm.*reuirementmaybereducedto1850gpmifthe,*Thr~~~t~~coolantflowraterequrIfollowing conditions aresatisfiedbeforethereucerehbsubcritical forat~implemented:

thereactorhasbeenendetermined toaveeenSterneratureis117'Pandthetemperature

!least125hours,themaximumRCpI)ooanersofCCWtotheshutdowncoolingheatexchanger sST.LUCIE-UNIT23/49-9Amendment No.pd,pd'

~1q~Op~OO~~ek'.1)tj~glPmo REFUELING OPERATIONS BASES3/4.9.6MANIPULATOR CRANETheOPERABILITY requirements fortherefuel1ng machineensurethat:(Qmanipulator craneswillbeusedformovementoffuelassemblies, withorwithoutCEAs,(2)eachcranehassufficient loadcapacitytoliftafuelassembly, withorwithoutCEAs,and(3)thecoreinternals andpressurevesselareprotected fromexcessive liftingforceintheeventtheyareinadvertently engagedduringliftingoperations.

3/4.9.7CRANETRAVEL-SPENTFUELSTORAGEPOOLBUILDINGTherestriction onmovementofloadsinexcessofthenominalweightofafuelassembly, CEAandassociated handlingtooloverotherfuelassemblies inthestoragepoolensuresthatintheeventthisloadisdropped(1)theactivityreleasewillbelimitedtothatcontained inasinglefuelassembly, and(2)anypossibledistortion offuelinthestoragerackswillnotresultinacriticalarray.Thisassumption isconsistent withtheactivityreleaseassumedinthesafetyanalyses.

3/4.9.8SHUTDOWNCOOLINGANDCOOLANTCIRCULATION Therequirement thatatleastoneshutdowncoolingloopbeinoperation ensuresthat(1)sufficient coolingcapacityisavailable toremovedecayheatandmaintainthewaterinthereactorpressurevesselbelow140'FasrequiredduringtheREFUELING MODE,and(2)sufficient coolantcirculation ismain-tainedthroughthereactorcoretominimizetheeffectsofaborondilutionincidentandpreventboronstratification.

Therequirement tohavetwoshutdowncoolingloopsOPERABLEwhenthereislessthan23feetofwaterabovethereactorpressurevesselflangewithirradiated fuelinthecoreensuresthatasinglefailureoftheoperating shutdowncoolingloopwillnotresultinacompletelossofdecayheatremovalcapability.

Withthereactorvesselheadremovedand23feetofwaterabovethereactorpressurevesselflangewithirradiated fuelinthecore,alargeheatsinkisavailable forcorecooling,thusintheeventofafailureoftheoperating shutdowncoolingloop,adequatetimeisprovidedtoinitiateemergency rocedures tocoolthecore.happ4/3/4.9.9CONTAINMENT ISOLATION SYSTEMpgjggAP~TheOPERABILITY ofthissystemensuresthatthecontainment isolation 84'gag'$valveswillbeautomatically isolatedupondetection ofhighradiation leves1withinthecontainment.

TheOpERABILITY ofthissystemisrequiredtorestrictthereleaseofradioactive materialfromthecontainment atmosphere totheenvironment.

ST.LUCIE-UNIT2B3/49-2A~a~&lrKlo.

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'<Yggy)g.'p<p~A~h";Q St.LucieUnit2DocketNo.50-389ProposedLicenseAmendment SDCSMinimumFlowRateReuirements WP9I'PWIINSERT-AThefootnoteproviding foraminimumreactorcoolantflowrateofa1850gpmconsiders oneofthetwoRCSinjection pointsforaSDCStraintobeisolated.

Thespecified parameters include50gpmforflowmeasurement uncertainty, and3'Funcertainty forRCSandCCWtemperature measurements.

Theconditions ofminimumshutdowntime,maximumRCStemperature, andmaximumtemperature ofCCWtotheshutdowncoolingheatexchanger areinitialconditions specified toassurethatareduction inflowratefrom3000gpmto1800gpmwillnotresultinatemperature transient exceeding 140'Fduringconditions whentheRCSwaterlevelisatanelevation a29.5feet.

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