ML17262A883

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Rev 6 to EOP ECA-0.1, Loss of All Ac Power Recovery W/O SI Required.
ML17262A883
Person / Time
Site: Ginna Constellation icon.png
Issue date: 05/06/1992
From:
ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17262A884 List:
References
ECA-.1, ECA-0.1, NUDOCS 9206160382
Download: ML17262A883 (46)
v • d • e


Text

EOP:ECA-0.1TITLE:LOSSOFALLACPOWERRECOVERYWITHOUTSIREQUIREDREV:6PAGE1of20ROCHESTER GASANDELECTRICCORPORATION GINNASTATIONCONTROLLED COPYNUMBERTECHNICAL REVIEWPORCREVIEWDATEr)PLANTSUPERINTENDENT EFECTVEDATECATEGORY"1.0REVIEWEDBY:920bfb0382 0500024920bpsPDR*DOCK@DRIP

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EOP:ECA-0.1TITLE:LOSSOFALLACPOWERRECOVERYWITHOUTSIREQUIREDREV:6PAGE2of20A.PURPOSE-Thisprocedure providesactionstousenormaloperational systemstostabilize plantconditions following restoration ofACemergency power-B.ENTRYCONDITIONS/SYMPTOMS 1.ENTRYCONDITIONS

-ThisProcedure isenteredfrom:a.ECA-O.O,LOSSOFALLACPOWER,whenACemergency powerisrestoredandSIisnotrequired.

P%lq>~gt EOP:ECA-0.1LITLE:LOSSOFALLACPOWERRECOVERYWITHOUTSIREQUIREDREV6PAGE3of20STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:oCSFSTsshouldbemonitored forinformation only.FRprocedures shouldnotbeimplemented priortocompletion ofStep11.oAdverseCNMTvaluesshouldbeusedwheneverCNMTpressureisgreaterthan4psigorCNMTradiation isgreaterthan10+R/hr.1CheckRCPSealIsolation Status:a.RCPsealinjection needlevalvesCLOSED~V-300A~V-300Ba.DispatchAOwithkeytoRWSTgatetolocallyclosevalvesbeforestartingchargingpump.b.RCPCCWreturnvalves-CLOSED~MOV-759A~MOV-759Bb.IFvalvesopenorpositionnotknown,THENcheckCCWpumpstatus:1)IFpumprunning,THENgotoStep2.2)IFpumpNOTrunning,THENmanuallyclosevalves.IFvalve(s)canNOTbeclosed,THENplaceswitchesforRCPthermalbarrierCCWoutletvalvestoCLOSE.~AOV-754A~AOV-754B2CheckCIAnnunciator A-26,CONTAINMENT ISOLATION EXTINGUISHED Performthefollowing:

a.DepressCIresetpushbutton b.Verifyannunciator A-26,CONTAINMENT ISOLATION, extinguished.

EOP:ECA-0.1TI'TLELOSSOFALLACPOWERRECOVERYWITHOUTSIREQUIREDREV:6PAGE4of20STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED3Establish IAtoCNMT:a.Verifynon-safeguards bussesenergized fromoffsitepoweroBus13normalfeed-CLOSEDa.Performthefollowing:

1)Closenon-safeguards bustiebreakers:

-OR-oBus15normalfeed-CLOSED~Bus13toBus14tie~Bus15toBus16tieb.CheckatleasttwoSWpumpsRUNNINGc.VerifyturbinebuildingSWisolation valves-OPENb.ManuallystartSWpumpsaspowersupplypermits(258kweach).IFlessthantwoSWpumpsrunning,THENgotoStep4.c.Manuallyalignvalves'MOV-4613andMOV-4670~MOV-4614andMOV-4664d.Startatleasttwoaircompressors (75kweach)e.CheckIAsupply:oPressure-GREATERTHAN60PSIGoPressure-STABLEORINCREASING f.ResetbothtrainsofXYrelaysforIAtoCNMT(AOV-5392) ifnecessary g.VerifyIAtoCNMTAOV-5392-OPENd.IFaircompressors canNOTbestarted,THENdispatchAOtolocallyresetcompressors asnecessary.

e.Performthefollowing:

1)ContinueattemptstorestoreIA(RefertoAP-IA.1,LOSSOFINSTRUMENT AIR).2)ContinuewithStep6.WHENIArestored, THENdoSteps3fthrough5.

~tJ EOP:ECA-0.1TITLE:LOSSOFALLACPOWERRECOVERYWITHOUTSIREQUIREDREV:6PAGE5of20STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED************+****************************CAUTIONTHELOADSPLACEDONTHEENERGIZED ACEMERGENCY BUSSHOULDNOTEXCEEDTHECAPACITYOFTHEPOWERSOURCE.************+****************************4ManuallyLoadFollowing Equipment OnACEmergency Busses:a.StartoneCCWpump(124kw)b.EnergizeMCCsaspowersupplypermits~MCCAfromBus13~MCCBfromBus15~MCCEfromBus15~MCCFfromBus15c.Verifyinstrument busD-ENERGIZED Id.WHENbus15restored, THENresetcontrolroomlightinge.StartatleastoneCNMTRECIRCfanf.RestoreRxheadcoolingaspowersupplypermits:1)CheckIAtoCNMT-AVAILABLE 2)StartoneRxcompartment coolingfan(23kweach)3)Startbothcontrolrodshroudfans(45kweach)g.DispatchAOtoestablish normalshutdownalignment (RefertoAttachment SD-1)c.Restorepowertoinstrument busDfromMCCBorMCCA(maintenance supply).1)GotoStep5.2)Performthefollowing:

oDispatchAOtoresetUVrelaysatMCCCandMCCD.oManuallystartonefanaspowersupplypermits.(23kw)3)Manuallystartatleastonefan(45kw)

Rlt1uAby4/k~10t~~08 EOP:ECA-0.1TI!LE:LOSSOFALI,ACPOWERRECOVERYWITHOUTSIREQUIREDREV!6PAGE6of20STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED5CheckIfChargingFlowHasBeenEstablished:

a.Chargingpumps-ANYRUNNINGa.Performthefollowing:

1)Ensuresealinjection needlevalvestobothRCPsisolated:

~RCPA,V-300A~RCPB,V-300B2)EnsureHCV-142open,demandatOa.b.ChargingpumpsuctionalignedtoRWST'LCV-112B-OPENoLCV-112C-CLOSEDb.Manuallyalignvalvesasnecessary.

IFLCV-112BcanNOTbeopened,THENperformthefollowing:

1)VerifychargingpumpANOTrunningandplaceinPULLSTOP.2)DispatchAOtolocallyopenmanualchargingpumpsuctionfromRWST(V-358locatedinchargingpumproom).c.Startchargingpumps(75kweach)asnecessary andadjustchargingflowtorestorePRZRlevel3)WHENV-358open,THENdirectAOtocloseV-268toisolatechargingpumpsBandCfromVCT(V-268locatedinchargingpumproom).

4IY' EOP:ECA-0.1T!TLE:LOSSOFALLACPOWERRECOVERYWITHOUTSIREQUIREDREV6PAGE7of20STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED6VerifySIFlowNotRequired:

a.RCSsubcooling basedoncoreexitT/Cs-GREATERTHANO'USINGFIGUREMINSUBCOOLING b.PRZRlevel-GREATERTHAN5%[30%adverseCNMT]a.GotoECA-0.2,LOSSOFALLACPOWERRECOVERYWITHSIREQUIRED, Stepl.b.ControlchargingflowtomaintainPRZRlevel.IFPRZRlevelcanNOTbemaintained, THENgotoECA-0.2,LOSSOFALLACPOWERRECOVERYWITHSIREQUIRED, Stepl.7CheckPRZRLevel-GREATERTHAN134[404'ORADVERSECONTAINMENT]

Controlchargingflowasnecessary.

I4r' EOP:ECA-0.1TITLE:LOSSOFALLACPOWERRECOVERYWITHOUTSIREQUIREDREV6PAGE8of20STEPACTION/EXPECTED RESPONSFRESPONSENOTOBTAINED*****************************************CAUTIONoIFCSTLEVELDECREASES TOLESSTHAN5FEET,THENALTERNATE WATERSOURCESFORAFWPUMPSWILLBENECESSARY (REFERTOER-AFW.1, ALTERNATE WATERSUPPLYTOAFWPUMPS).oIFS/GNRLEVELDECREASES TOLESSTHAN5%[25%ADVERSECNMT]ANDFEEDFLOWISLESSTHAN200GPM,THENTHEMDAFWPUMPSSHOULDBEMANUALLYLOADEDONACEMERGENCY BUSTOSUPPLYWATERTOTHES/G(S).NOTE:oIfMDAFWpumpoperation isnotrequired, pumpswitchesshouldbemaintained inPULL-STOP topreventautomatic start.oTDAFWpumpflowcontrolvalvesfailopenonlossofIA.8CheckIntactS/GLevels:a.Narrowrangelevel-GREATERTHAN5%[25%adverseCNMT]a.Maintaintotalfeedflowgreaterthan200gpmuntilnarrowrangelevelgreaterthan5%[25%adverseCNMT]inatleastoneS/G.IFfeedflowlessthan200gpm,THENperformthefollowing:

1)VerifyMDAFWpumpdischarge valvesopen.~MOV-4007~MOV-4008b.Controlfeedflowtomaintainnarrowrangelevelbetween17%[25%adverseCNMT]and50%2)ManuallystartMDAFWpumpsasnecessary (228KWeach).

'Ira EOP:ECA-0.1TITLE:LOSSOFALLACPOWERRECOVERYWITHOUTSIREQUIREDREV'PAGE9of20STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED9Establish S/GPressureControl:a.AdjustS/GARVcontrollers tomaintainexistingS/Gpressureb.VerifyS/GARVcontrollers inAUTOc.DispatchAOtoperformAttachment SD-2NOTE;IfanyheattracingorBASTtemperatures arelow,flowpaths fromtheBASTsshouldbeevaluated beforebeingused.10CheckBASTTemperature:

oAnnunciator B-31,BASTTEMPORLON2PRESS-EXTINGUISHED Performthefollowing:

a.VerifySIpumpsuctionvalvesfromBASTsclosed.oAnnunciator K-22,HEATTRACINGSYSTEM-EXTINGUISHED

~MOV-826AorMOV-826B~MOV-826CorMOV-826Db.OpenatleastoneSIpumpsuctionvalvefromRWST.oMOV-825A-OR-oMOV-825Bc.DispatchAOtolocallycheckBASTandheattracingtemperatures.

k6C' EOP:ECA-0.1T1TLF:LOSSOFALLACPOWERRECOVERYWITHOUTSIREQUIREDREV:6pAGE10of20STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:Safeguards pumpswitchesshouldbeplacedinAUTOonlyifassociated busisenergized.

11PlaceFollowing PumpSwitchesInAUTO:~SIpumps~RHRpumps~CNMTspraypumpsNOTE:FRprocedures maynowbeimplemented asnecessary.

12VerifyAdequateSHFlowToCCWHx:a.VerifyatleasttwoSWpumpsRUNNINGb.VerifyAUXBLDGSWisolation valves-OPEN~MOV-4615andMOV-4734~MOV-4616andMOV-4735c.VerifyCNMTRECIRCfanannunciator C-2,HIGHTEMPERATURE ALARM-EXTINGUISHED a.Manuallystartpumpsaspowersupplypermits(258kweach).IFlessthantwoSWpumpscanbeoperated, THENgotoStep19.b.Establish SWtoAUXBLDG(RefertoAttachment AUXBLDGSW).ContinuewithStep19.WHENSWrestoredtoAUXBLDG,THENdoSteps12cthrough18.c.DispatchAOtolocallythrottleflowtoCCWHxtobetween5000gpmand6000gpmtotalflow.

4gtill>'6II4iI EOP:ECA-F1TITLE:LOSSOFALZ,ACPOWERRECOVERYWITHOUTSIREQUIREDREV:6PAGE11of,20STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED13CheckIfNormalCVCSOperation CanBeEstablished a.VerifyIArestored:

oIAtoCNMT(AOV-5392)

-OPENoIApressure-GREATERTHAN60PSIGa.ContinuewithStep19.WHENIArestored, THENdoSteps13through18.b.Chargingpump-ANYRUNNINGb.ContinuewithStep19.WHENanychargingpumprunning,THENdoSteps14through18.

'l41JILF4 EOP:ECA-0.1TITLE:LOSSOFALLACPOWERRECOVERYWITHOUTSIREQUIREDREV:6PAGE12of20STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDCheckIfSealReturnFlowShouldBeEstablished:

a.VerifyRCP¹1sealoutlettemperature

-LESSTHAN235'Fb.VerifyRCPsealoutletvalvesOPEN~AOV-270A~AOV-270Ba.GotoStep15.b.Manuallyopenvalvesasnecessary.

c.ResetbothtrainsofXYrelaysforRCPsealreturnisolation valveMOV-313ifnecessary d.OpenRCPsealreturnisolation valveMOV-313e.VerifyRCP¹1sealleakoffflowLESSTHAN5.5GPMd.Performthefollowing:

1)PlaceMOV-313switchtoOPEN.2)DispatchAOwithkeytoRWSTgatetolocallyopenMOV-313.e.IFanyRCPsealleakoffflowgreaterthan5.5gpmTHENclosetheaffectedRCPsealdischarge valve:f.VerifyRCP¹1sealleakoffflowGREATERTHAN0.25GPM~RCPA,AOV-270A~RCPB,AOV<<270BIFbothRCPsealdischarge valvesareshut,THENgotoStep15.f.RefertoAP-RCP.1, RCPSEALMALFUNCTION.

eW1I~Iff)JW~IIll EOI"ECA-0.1TITLE:LOSSOFALLACPOWERRECOVERYWITHOUTSIREQUIREDREV:6PAGE13of20STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED15VerifyPRZRLevel-GREATERTHAN13%[404adverseCNMT]ContinuewithStep19.WHENPRZRlevelincreases togreaterthan13%[40%adverseCNMT],THENdoSteps16through18.16Establish NormalLetdown:a.Establish charginglineflowtoREGENHx-GREATERTHAN20GPMb.Placethefollowing switchestoCLOSE'Letdownorificevalves(AOV-200A, AOV-200B, andAOV-202)~AOV-371,letdownisolation valve~AOV-427,loopBcoldlegtoREGENHxc.Placeletdowncontrollers inMANUALat25%open~TCV-130~PCV-135d.ResetbothtrainsofXYrelaysforAOV-371andAOV-427ifnecessary e.OpenAOV-371andAOV-427f.Openletdownorificevalvesasnecessary g.PlaceTCV-130inAUTOat105'Fh.PlacePCV-135inAUTOat250psigi.AdjustchargingpumpspeedandHCV-142asnecessary IFRCPsealreturnhasbeenestablished, THENestablish excessletdownasfollows:oPlaceexcessletdowndivertvalve,AOV-312,toNORMAL.oEnsureCCWfromexcessletdownopen,(AOV-745).

oOpenexcessletdownisolation valveAOV-310.oSlowlyopenHCV-123tomaintainexcessletdowntemperature lessthan195'Fandpressurelessthan100psig.oAdjustchargingpumpspeedasnecessary.

IFRCPsealreturnNOTestablished, THENconsultTSCtodetermine ifexcessletdownshouldbeplacedinservice.

L~+II~IFe EOP:ECA-0.1LITLE:LOSSOFALI,ACPOWERRECOVERYWITHOUTSIREQUIREDREV:6PAGE14of20STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED17CheckVCTMakeupSystem:a.Verifythefollowing:

1)BoricacidflowcontrolvalveSETFORREQUIREDCSDCONCENTRATION (RefertoFigureSDM)2)AtleastoneBAand.RMWpumpinAUTOa.IFVCTautomakeupcanNOTbeestablished, THENmanuallycontrolVCTlevel(RefertoER-CVCS~1,REACTORMAKEUPCONTROLMALFUNCTION).

3)RMWmodeselectorswitchinAUTO4)RMWcontrolarmed-REDLIGHTLITb.CheckVCTleveloLevel-GREATERTHAN20%-OR-oLevel-STABLEORINCREASING b.ManuallyincreaseVCTmakeupflow'asfollows:1)EnsureBAtransferpumpsandRMWpumpsrunning.IFNOT",THENdispatchAOtoresetMCCCandMCCDUVlockoutsasnecessary.

.,2)PlaceRMWflowcontrolvalveHCV-111inMANUALandincreaseRMWflow.3)Increaseboricacidflowasnecessary.

IFVCTlevelcanNOTberestored, THENgotoStep19.

E>Ifi EOP:ECA-0.1TITLE:LOSSOFALLACPOWERRECOVERYWITHOUTSIREQUIREDREV:6PAGE15of20STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED18CheckChargingPumpSuctionAlignedToVCT:a.VCTlevel-GREATERTHAN20%a.IFVCTlevelcanNOTbemaintained greaterthan5%,THENperformthefollowing:

1)Ensurechargingpump'uction aligned,toRWST:oLCV-112BopenoLCV-112Cclosed2)ContinuewithStep19.WHENVCTlevelgreaterthan40%,THENdoStep18b.b.VerifychargingpumpsalignedtoVCToLCV-112C-OPENoLCV-112B-CLOSEDb.Manuallyalignvalvesasnecessary.

19Control'RZR Level:a.Checkletdown-INSERVICEb.MaintainPRZRlevelbetween13%(40%adverseCNMT]and50%a.Stopandstartchargingpumpsasnecessary tocontrolPRZRlevel.

h,~Q~st.

EOPIECA-0.1TITLE:LOSSOFALI,ACPOWERRECOVERYWITHOUTSIREQUIREDREV6PAGE16of2OSTEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:oIfauxiliary sprayisinuse,sprayflowmaybeincreased byclosingnormalchargingvalveAOV-294andnormalPRZRsprayvalves.oWhenusingaPRZRPORVselectonewithanoperableblockvalve.20Establish PRZRPressureControl:a.Checkletdown-INSERVICEb.UsePRZRheatersandauxiliary sprayvalve(AOV-296) tomaintainRCSpressurea.Performthefollowing:

1)UsePRZRheatersandonePRZRPORVtomaintainRCSpressure.

IFIANOTavailable, THENRefertoAttachment N2PORVS~tooperatePORV.2)GotoStep21.21VerifyNaturalCirculation:

oRCSsubcooling basedoncoreexitT/Cs-GREATERTHANO'USINGFIGUREMINSUBCOOLING IncreasedumpingsteamfromintactS/Gs.oS/Gpressures

-STABLEORDECREASING oRCShotlegtemperatures STABLEORDECREASING oCoreexitT/Cs-STABLEORDECREASING oRCScoldlegtemperatures

-ATSATURATION TEMPERATURE FORS/GPRESSURE

~I EOP:ECA-0'TITLE:LOSSOFALI,ACPOWERRECOVERYWITHOUTSIREQUIREDREV:6PAGE17of20STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:AdverseCNMTconditions orlossofforcedaircoolingmayresultinfailureofNISdetectors.

22CheckIfSourceRangeDetectors ShouldBeEnergized:

a.SourcerangechannelsDEENERGIZED a.GotoStep22e.b.Checkintermediate rangeflux-EITHERCHANNELLESSTHAN1010AMPSb.Performthefollowing:

1)IFneitherintermediate rangechannelisdecreasing THENinitiateboration.

c.Checkthefollowing:

oBothintermediate rangechannels-LESSTHAN10AMPS2)ContinuewithStep23.WHENfluxisLESSTHAN101ampsonanyoperablechannel,THENdoSteps22cthroughe.c.ContinuewithStep23.WHENeithercondition met,THENdoSteps22dande.-OR-oGreaterthan20minutessincereactortripd.Verifysourcerangedetectors ENERGIZED d.Manuallyenergizesourcerangedetectors bydepressing P-6permissive defeatpushbuttons (2of2).IFsourcerangescanNOTberestored, THENrefertoER-NIS.1, SRMALFUNCTION andgotoStep23.e.TransferRk-45recordertoonesourcerangeandoneintermediate rangechannel LID EOP:ECA-0.1TITLE:LOSSOFALLACPOWERRECOVERYWITHOUTSIREQUIREDREV:6PAGE18of20STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED*****************************************CAUTIONoRCPTHERMALBARRIERCOOLINGSHOULDBEESTABLISHED SLOWLYTOMINIMIZEPOTENTIAL INTRODUCTION OFSTEAMINTOTHECCWSYSTEMANDTHERMALSHOCKTORCP.oRCPSEALINJECTION SHOULDBEESTABLISHED SLOWLYTOMINIMIZERCPTHERMAL,STRESSESANDPOTENTIAL SEALFAILURES.

oASPARTOFSUBSEQUENT RECOVERYACTIONS,RCP(S)SHOULDNOTBESTARTEDPRIORTOASTATUSEVALUATION UNLESSREQUIREDBYANINADEQUATE CORECOOLINGSITUATION.

NOTE:SWshouldbealignedtoCCWHxsbeforerestoring RCPsealcooling.23CheckRCPCooling:a.CheckCCWtoRCPs:Establish normalcoolingtoRCPs(RefertoAttachment SEALCOOLING).

oAnnunciator A-7,RCP1ACCWRETURNHIGHTEMPORLOWFLOWEXTINGUISHED oAnnunciator A-15,RCP1BCCWRETURNHIGHTEMPORLOWFLOWEXTINGUISHED b.CheckRCPsealinjection:

oLabyrinth sealD/Ps-GREATERTHAN15INCHESOFWATER-OR-oRCPsealinjection flowtoeachRCP-GREATERTHAN6GPM

~mS4ee1I"4<,

EOP:ECA-0.1TITLE:LOSSOFALLACPOWERRECOVERYWITHOUTSIREQUIREDREV:6PAGE19of20STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED24.VerifyAdequateShutdownMargin:a.DirectHPtosampleRCSandPRZRliquidforboronconcentration b.Verifyboronconcentration-GREATERTHANREQUIREMENTS OFFIGURESDMb.Borateasnecessary.

25MaintainStablePlantConditions a.RCSpressure-STABLEb.RCStemperature

-STABLEc.PRZRlevel-BETWEEN13%[40%adverseCNMT]and50%d.IntactS/Glevel-.BETWEEN17%[25%adverseCNMT]and50%a.ControlPRZRheatersandauxiliary sprayifavailable.

b.Controldumpingsteamasnecessary.

c.Controlchargingasnecessary.

d.ControlS/Gfeedflowasnecessary.

26VerifySIFlowNotRequired:

a.RCSsubcooling basedoncoreexitT/Cs-GREATERTHANO'USINGFIGUREMINSUBCOOLING b.PRZRlevel-GREATERTHAN5%[30%adverseCNMT)a.GotoECA-0.2,LOSSOFALLACPOWERRECOVERYWITHSIREQUIRED, Stepl.b.ControlchargingflowtomaintainPRZRlevel.IFPRZRlevelcanNOTbemaintained, THENgotoECA-0.2,LOSSOFALLACPOWERRECOVERYWITHSIREQUIRED, Step1.

4'*QFIL(

EOP:ECA-0.1LITLE:LOSSOFAI,I,ACPOWERRECOVERYWITHOUTSIREQUIREDREV'PAGE20of20STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDh27TryToRestoreOffsitePowerToAllACBusses(RefertoER-ELEC.1, RESTORATION OFOFFSITEPOWER)Maintainplantcondition stableusingACemergency power.28Determine IfNaturalCirculation CooldownIsRequired:

a.Consultplantstafftodetermine ifRCScooldownisnecessary a.IFcooldownNOTrequired, THENgoto0-3,HOTSHUTDOWNWITHXENONPRESENT.b.AtleastoneRCP-OPERABLEb.GotoES-0.2,NATURALCIRCULATION COOLDOWN.

c.Goto0-2.2,PLANTSHUTDOWNFROMHOTSHUTDOWNTOCOLDSHUTDOWN-END-1I+'1 EOP:ECA-0'T1TLE:LOSSOFALLACPOWERRECOVERYWITHOUTSIREQUIREDREV!6PAGE1of1ECA-0.1APPENDIXLIS'TTITLEPAGES1)FIGUREMINSUBCOOLING 2)FIGURESDM3)ATTACHMENT SD-14)ATTACHMENT SD-25)ATTACHMENT N2PORVS6)ATTACHMENT SEALCOOLING7)ATTACHMENT AUXBLDGSW 5~*C)ar.~~J~3 EOP:ECA-0.1TITLE:LOSSOFAILACPOWERRECOVERYWITHOUTSIREQUIREDREV:6PAGE1of1FIGUREMINSUBCOOLING NOTE:Subcooling Margin=Saturation Temperature FromFigureBelow[-]CoreExitT/CIndication RC2500240023002200210020001900180017001600150013001200110010009008007006005004003002001000SPRESSURE(PSIG)RCSPRESSUREINCREMENTS 20PSIGSUBCOOLED REGIONADVERSECNHTNORMALCNMTINADEQUATE SUBCOOLING REGIONTEMPERATURE INCREMENTS 10'f200250300350400450500550600650700COREEXITSATURATION TEMPERATURE

('f) 4*~~t>>hL~A<<4rJ~te+Xc'C,4'1al EOP:ECA-0.1TLTLE:LOSSOFALLACPOWERRECOVERYWITHOUTSIREQUIREDREV6PAGE1of1BORONCONCENTRATION (PPH)1800FIGURESDM1600BORONINCREMENTS 20PPH140012001000ADEQUATESDM100PPHCONSERVATISH INCLUDEDSOO600400ORA200BURNUPINCREMENTS 100HWD/HTU01000200030004000500060007000800090001000011000CYCLE22BURNUP(HWD/HTU)

NOTE:Toobtaincoreburnup,usePPCS.turnoncodeBURNUP.

I

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