ML17309A572

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Rev 10 to EOP ECA-1.1, Loss of Emergency Coolant Recirculation.
ML17309A572
Person / Time
Site: Ginna Constellation icon.png
Issue date: 04/20/1995
From: MARLOW T A
ROCHESTER GAS & ELECTRIC CORP.
To:
References
ECA-1.1, NUDOCS 9504280018
Download: ML17309A572 (43)
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EOP:iECA-l.lTITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV:10PAGE1of28ROCHESTER GASANDELECTRICCORPORATION GINNASTATIONCONTROLLED COPYNUMBERTECHNICAL REVIEWPORCREVIEWDATELANTSUPERINTEND T+'Dd~EFFECTIVE DATECATEGORY1.0REVIEWEDBY:r0+2804---t.>c.r)PgRAga~i~89g~420'05000gy~F'DRra EOP:iECA-1.1TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV:10PAGE2of28A.PURPOSE-Thisprocedure providesactionstorestoreemergency coolantrecirculation capability, todelaydepletion oftheRWSTbyaddingmakeupandreducingoutflow,andtodepressurize theRCStominimizebreakflow.B.ENTRYCONDITIONS/SYMPTOMS 1.ENTRYCONDITIONS

-Thisprocedure isenteredfrom:a.E-l,LOSSOFREACTORORSECONDARY COOLANT,whencoldlegrecirculation capability cannotbeverified.

b~ES13gTRANSFERTOCOLDLEGRECIRCULATION

/whenrecirculation cannotbeestablished ormaintained.

c~ECA1~2gLOCAOUTSIDECONTAINMENTgwhenaLOCAoutsidecontainment cannotbeisolated.

EOP:4ECA-1'TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV10PAGE3of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED*****************************************CAUTIONoIFEMERGENCY COOLANTRECIRCULATION CAPABILITY ISRESTOREDDURINGTHISPROCEDURE, FURTHERRECOVERYACTIONSSHOULDCONTINUEBYRETURNING TOPROCEDURE ANDSTEPINEFFECT.oIFSUCTIONSOURCEISLOSTTOANYSIORCNMTSPRAYPUMP,THEPUMPSHOULDBESTOPPED.NOTE:AdverseCNMTvaluesshouldbeusedwheneverCNMT~ressureisgreaterthan4psigorCNMTradiation isgreaterthan10+R/hr.1VerifyCNMTSumpRecirculation Capability:

a.CheckRHRsystem:oRHRpumps-OPERABLEoRHRsuctionvalvesfromsumpB-OPERABLEa.Manuallyorlocallytrytorestoreatleastonetrain(RefertoAttachment RHRSYSTEMtoidentifyminimumcomponents foronetrain).~MOV-850A~MOV-850BoRHRpumpdischarge toRxvesseldelugevalvesOPERABLE~MOV-852A~MOV-852BoCCWpumps-OPERABLEoCCWtoRHRHx-OPERABLE~MOV-738A~MOV-738Bb.CheckatleasttwoSWpumpsRUNNINGb.ManuallystartSWpumpsaspowersupplypermits(258kweach).

EOP:iECA-1.1~~TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV:10PAGE4of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED2AddMakeupToRNSTAsNecessary oRefertoS-9J,BLENDINGTORWST-OR-oRefertoS-3'D,TRANSFERRING WATERFROMCVCSHUT(S)TORWSTORSFP-OR-oRefertoAttachment SFP-RWST*****************************************CAUTIONIFCSTLEVELDECREASES TOLESSTHAN5FEET,THENALTERNATE WATERSOURCESFORAFWPUMPSWILLBENECESSARY (REFERTOER-AFW.1, ALTERNATE WATERSUPPLYTOAFWPUMPS).*****************************************NOTE:1DAFWpumpflowcontrolvalvesfailopenonlossofIA.*3MonitorIntactS/GLevels:a.Narrowrangelevel-GREATERTHAN5S[25%adverseCNMT]b.Controlfeedflowtomaintainnarrowrangelevelbetween17%[25%adverseCNMT]and50%a.Maintaintotal.feedflowgreaterthan200gpmuntilnarrowrangelevelgreaterthan5%[25%adverseCNMT]inatleastoneS/G.b.IFnarrowrangelevelinanyS/Gcontinues toincrease, THENstopfeedflowtothatS/G.

EOP:iECA-1.1TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV:10PAGE5of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:Shutdownmarginshouldbemonitored duringRCScooldown(RefertoFigureSDM).4InitiateRCSCooldownToColdShutdown:

a.Establish andmaintaincooldownrateinRCScoldlegs-LESSTHAN100'F/HRb.Dumpsteamtocondenser fromintactS/G(s)b.ManuallyorlocallydumpsteamfromintactS/G(s):oUseS/GARVs-OR-oOpenTDAFWpumpsteamsupplyvalves.-OR-oDispatchAOtoperformthefollowing:

1)OpenS/GMSIVbypassvalves.2)Openprimingairejectorsteamsupplyrootvalve,V-3578.3)Open1Aand1Bprimingairejectorisolation valves.~V-3580~V-3581IFnointactS/Gavailable, THENusefaultedS/G.

EOP:iECA-1.1LOSSOFEMERGENCY COOLANTRECIRCULATION REV:10PAGE6of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED5VerifyCNMTRECIRCFansRunning:a.Allfans-RUNNINGb.Charcoalfilterdampersgreenstatuslights-EXTINGUISHED a.Manuallystartfans.b.Dispatchpersonnel withrelayrackkeytolocallyopendampersusingtriprelaypushbuttons inrelayroomracks.~AUXRELAYRACKRA-2forfanA~AUXRELAYRACKRA-3forfanC*6MonitorRWSTLevel-GREATERTHAN154GotoStep25.

EOP:'CA-1.1I~TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV10PAGE7of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED7Determine CNMTSprayRequirements:

a.Determine numberofCNMTspraypumpsrequiredfromtable:RWSTLEVELCNMTPRESSURECNMTRECIRCFANSRUNNINGCNMTSPRAYPUMPSREQUIREDGREATERTHAN60PSIGGREATERTHAN28'ETWEEN 28PSIGAND60PSIG0OR12OR3ALLLESSTHAN28PSIGBETWEEN15'ND28'REATER THAN60PSIGBETWEEN28PSIGAND60PSIG0,1,2,OR3ALLLESSTHAN28PSIGLESSTHAN158b.CNMTspraypumpsrunning-EQUALTOMINIMUMNUMBERREQUIREDb.Manually, operateCNMTspraypumpsasnecessary.

IFCNMTspraypump(s)mustbestopped,THENplaceswitchinPULLSTOP.

C' EOP:~ECA-1.1TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV10PAGE8of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED*****************************************CAUTIONIFOFFSITEPOWERISLOSTAFTERSIRESET,THENSELECTEDSWPUMPSANDONECCWPUMPWILLAUTOSTARTONEMERGENCY D/G.MANUALACTIONWILLBEREQUIREDTORESTARTSAFEGUARDS EQUIPMENT.

8ResetSIIfNecessary 9Establish OneTrainOfSIFlowa.SIpumps-LESSTHANTHREERUNNINGa.StoponeSIpump.b.RCSpressure-LESSTHAN250psig[465psigadverseCNMTjc.RHRpump-ONLYONERUNNINGb.StopRHRpumpsandgotoStep10.c.IFtwoRHRpumpsrunning,THENstoponeRHRpump.IFnoRHRpumpsrunning,THENstartoneRHRpump.10VerifyNoBackflowFromRWSTToSump:a.AnyRHRsuctionvalvefromsumpB-OPEN~MOV-850A~MOV-850Ba.IFbothRHRsuctionvalvesfromsumpBclosed,THENgotoStep11.b.RWSToutletvalvetoRHRpumpsuction(MOV-856)

-CLOSEDb.Performthefollowing:

1)PlaceMOV-856keyswitchtoON[2)ManuallyclosevalveIFvalvecanNOTbeclosedmanually, THENdirectAOtolocallyclosevalve.

EOP:ECA-1.1LOSSOFEMERGENCY COOLANTRECIRCULATION REV:10PAGE9of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED11ResetCI:a.DepressCIresetpushbutton b.Verifyannunciator A-26,CNMTISOLATION

-EXTINGUISHED b.Performthefollowing:

1)ResetSI.2)DepressCIresetpushbutton.

12VerifyAdequateSWFlow:a.CheckatleasttwoSWpumpsRUNNINGa.ManuallystartSWpumpsaspowersupplypermits(258kweach).IFlessthantwoSWpumpsrunning,THENperformthefollowing:

1)EnsureSWisolation.

2)DispatchAOtoestablish normalshutdownalignment (RefertoAttachment SD-1)b.DispatchAOtoestablish normalshutdownalignment (RefertoAttachment SD-1)3)GotoStep15.

EOP:~ECA-1.1TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV10PAGE10of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED13Establish IAtoCNMT:a.Verifynon-safeguards bussesenergized fromoffsitepoweroBus13normalfeed-CLOSED-OR-oBus15normalfeed-CLOSEDb.VerifySWisolation valvestoturbinebuilding-OPEN~MOV-4613and.MOV-4670

~MOV-4614andMOV-4664cdVerifyatleasttwoaircompressors

-RUNNING.d.CheckIAsupply:oPressure-GREATERTHAN60PSIGoPressure-STABLEORINCREASING e.ResetbothtiainsofXYrelaysforIAtoCNMTAOV-5392f.VerifyIAtoCNMTAOV-5392-OPENa.Performthefollowing:

1)Close.non-safeguards bustiebreakers:

~Bus13toBus14tie'Bus15toBus16tie2)Verifyadequateemergency D/Gcapacitytorunaircompressors (75kweach).IFNOT,THENevaluateifCNMTRECIRCfansshould.bestopped(RefertoAttachment CNMTRECIRCFANS).3)WHENbus15restored, THENresetcontrolroomlighting.

b.Manuallyalignvalves.c.Manuallystartaircompressors aspowersupplypermits(75kweach).IFaircompressors canNOTbestarted,THENdispatchAOtolocallyresetcompressors asnecessary.

d.Performthefollowing:

1)ContinueattemptstorestoreIA(RefertoAP-IA.1,LOSSOFINSTRUMENT AIR).2)ContinuewithStep14.WHENIArestored, THENdoSteps13eandf.

EOP:~ECA-1.1LOSSOFEMERGENCY COOLANTRECIRCULATION REV10PAGEllof28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED14Establish RequiredChargingLineFlow:a.Chargingpumps-ANYRUNNINGa.Performthefollowing:

1)IFCCWflowislosttoanyRCPthermalbarrierORanyRCP¹1sealoutlettemperature offscalehigh,THENdispatchAOwithRWSTareakeytolocallyclosesealinjection needlevalvestoaffectedRCP:~RCPA,V-300A~RCPB,V-300Bb.Establish 20gpmtotalchargingflow')EnsureHCV-142demandat0%.3)Startonechargingpump.'

EOP:iECA-l.lTITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV:10PAGE12of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED*****************************************CAUTIONIFRCPSEALCOOLINGHADPREVIOUSLY BEENLOST,THENTHEAFFECTEDRCP(S)SHOULDNOTBESTARTEDPRIORTOASTATUSEVALUATION.

                                          • '********************15CheckRCPStatus:a.RCSsubcooling basedoncoreexitT/Cs-GREATERTHANO'USINGFIGUREMINSUBCOOLING a.StopallRCPsandgotoStep16.b.RCPs-ATLEASTONERUNNINGb.TrytostartanRCP:1)Establish conditions forstartinganRCPoBus11Aor11Benergized oRefertoAttachment RCPSTARTc.StopallbutoneRCP2)StartoneRCP.

EOP:'ECA-1.1LOSSOFEMERGENCY COOLANTRECIRCULATION REV'0PAGE13of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED*16MonitorSITermination Criteria:

a.RCSsubcooling basedoncoreexitT/Cs-GREATERTHAN50'FUSINGFIGUREMINSUBCOOLING LimitRCSinjection flowtothatrequiredtoremovedecayheat:oDetermine requiredinjection flowusingFigureMINRCSINJECTION b.CheckRVLISindication:

oLevel(noRCPs)-GREATERTHAN68%[73%adverseCNMT]-OR-oFluidfraction(anyRCPrunning)-GREATERTHAN80%oStopSIpumpsasnecessary toestablish andmaintainminimumrequiredSIflow.oIFrequiredinjection flowislessthan100gpm,THENestablish requiredchargingflowandgotoStep17.IFrequiredinjection flowisgreaterthan100gpm,THENperformthefollowing:

a.EnsureoneSIpumprunningb.Establish minimumchargingflowforRCPsealinjection.

c.ConsultTSCtodetermine ifSIpumpdischarge valvesshouldbelocallythrottled.

(Lockedvalvekeyrequired.)

d.GotoStep18.

EOP:'ECA-1.1TITLELOSSOFEMERGENCY COOLANTRECIRCULATION REV10PAGE14of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED17StopSIAndRHRPumpsAndPlaceInAuto18VerifyAdequateRCSMakeupFlow:a.CheckRVLISindication:

oLe~el(noRCPs)-GREATERTHAN68%[73%adverseCNMT]-OR-a.IncreaseRCSinjection flowasnecessary tomaintainRVLISindication stable.oFluidfraction(anyRCPrunning)-GREATERTHAN80%b.CoreexitT/Cs-STABLEORDECREASING b.IncreaseRCSinjection flowtomaintaincoreexitT/Csstableordecreasing.

EOP:'ECA-1.1TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV10PAGE15of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:IfnormalRCPsupportconditions canNOTbesatisfied, thenanyrunningRCP(s)shouldbestopped.19Depressurize RCSToDecreaseRCSSubcooling:

a.CheckRCSsubcooling basedoncoreexitT/Cs-GREATER,THAN20'FUSINGFIGUREMINSUBCOOLING a.GotoStep20.b.NormalPRZRspray-AVAILABLE b.UseonePRZRPORV.IFIANOTavailable, THENrefertoAttachment N2PORVS.IFnoPRZRPORVavailable, THENuseauxiliary sprayvalve(AOV-296).

c.Depressurize RCSuntileitherofthefollowing conditions satisfied:

oRCSsubcooling basedoncoreexitT/Cs-LESSTHAN10'FUSINGFIGUREMINSUBCOOLING

-OR-oPRZRlevel-GREATERTHAN87%[75%adverseCNMT]d.WHENeithercondition met,THENstopRCSdepressurization e.CheckRCSsubcooling

-GREATERTHANO'FUSINGFIGUREMINSUBCOOLING e.IncreaseRCSmakeupflowasnecessary torestoresubcooling.

EOP:~ECA-1.1TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV:10PAGE16of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED20CheckIfRHRNormalCoolingCanBeEstablished:

a.RCScoldlegtemperature

-LESSTHAN350'Fa.GotoStep21.b.RCSpressure-LESSTHAN400psig[300psigadverseCNMT]c.Placeletdownpressurecontroller (PCV-135) inMANUALCLOSEDb.GotoStep21.d.Checkfollowing valves-OPEN~AOV-371,letdownisolation valve~AOV-427,loopBcoldlegtoREGENHx~Atleastoneletdownorificevalve(AOV-200A, AOV-200B, orAOV-202)d.Performthefollowing:

1)ResetbothtrainsofXYrelaysforAOV-371andAOV-427.2)OpenAOV-371.3)PlaceAOV-427switchtoOPEN.e.VerifypressureonPI-135-LESSTHAN400PSIG4)Openoneletdownorificevalve.e.GotoStep21.f.PlaceRCSoverpressure protection systeminservice(Referto0-7,ALIGNMENT ANDOPERATION OFTHEREACTORVESSELOVERPRESSURE PROTECTION SYSTEM)g.ConsultTSCtodetermine ifRHRnormalcoolingshouldbeestablished usingAttachment RHRCOOL EOP:~ECA-1.1~~LOSSOFEMERGENCY COOLANTRECIRCULATION REV:10PAGE17of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED21CheckIfSIACCUMsShouldBeIsolated:

a.BothRCShotlegtemperatures LESSTHAN400'Fb.DispatchAOwithlockedvalvekeytolocallyclosebreakersforSIACCUMdischarge valves~MOV-841,MCCCposition12F~MOV-865,MCCDposition12Cc.CloseSIACCUMdischarge valves~MOV-841~MOV-865a.ContinuewithStep22.WHENbothRCShotlegtemperatures lessthan400'F,THENdoSteps21b,candd.c.Ventanyunisolated ACCUMs:1)Openventvalvesforunisolated SIACCUMs.d.LocallyreopenbreakersforMOV-841andMOV-865~ACCUMA,AOV-834A~ACCUMB,AOV-834B2)OpenHCV-945.*22MonitorRCPOperation:

a.RCPs-ANYRUNNINGb.Checkthefollowing:

oRCP¹1sealD/P-GREATERTHAN220PSIDa.GotoStep23.b.StopaffectedRCP(s).oCheckRCPsealleakageWITHINTHENORMALOPERATING RANGEOFFIGURERCPSEALLEAKOFF EOP:ECA-1.1TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV10PAGE18of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED23CheckCoreExitT/Cs-GREATERTHAN200'FGotoStep38.124CheckRWSTLevel-LESSTHAN154ReturntoStep1.b25MinimizeRWSTOutflow:a.AnySIpump(s)-RUNNINGa.IFchargingpumpsuctionalignedtoRWST,THENperformthefollowing:

1)VerifySIpumpsuctionalignedtoRWST,MOV-825AorMOV-825Bopen.2)StartoneSIpumpandverifyflow.b.StopallbutoneSIpumpc.CheckchargingpumpsuctionfromRWST(AOV-112B)

-OPEN3)Stoprunningchargingpumps.4)GotoStep25e.c.GotoStep25e.d.Stopallchargingpumpse.StopbothCNMTspraypumpsf.StopbothRHRpumps EOP:ECA-1.1TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV:10PAGE19of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED26CheckSIpumpflow-STABLEIFSIflowzeroorerratic,THENstoprunningSIpump.27TryToAddMakeupToRCSFromVCT:ha.CheckVCTlevel-GREATERTHAN5%b.VerifychargingpumpsalignedtoVCToLCV-112C-OPENoLCV-112B-CLOSEDa.StopchargingpumpstakingsuctionfromVCTandcontinuewithStep28.WHENVCTlevelgreaterthan5%,THENdoSteps27bandc.b.Manuallyalignvalvesasnecessary.

c.Startchargingpumpsasnecessary toestablish twopumpsrunning

EOP:~ECA-1.1TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV10PAGE20of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED28Establish MaximumVCTMakeup:a.CheckRMWcontrolarmed-REDLIGHTLITb.CheckVCTlevel-LESSTHAN20%c.CheckVCTmakeupsystem-OPERATING INAUTOd.IncreaseVCTmakeupflow1)StartbothRMWpumps2)Startbothboricacidpumps3)AdjustRMWcontroller (HC-111)inMANUALtomaximumflowfromtablea.PlaceRMWmodeswitchinAUTOandplaceRMWcontrolswitchtoSTART.b.ContinuewithStep29.WHENVCTlevellessthan20%,THENdoSteps28c,dande.c.Performthefollowing:

1)Openmakeupsystemvalves.~AOV-llOB~AOV-110C~AOV-ill2)StartBAtransferpumpsandRMWpumps.3)Openboricacidflowcontrolvalve(AOV-110A).

BASTCONC(PPM)7000(4a)8750(5%)10500(6%)12250(7%)14000(8%)MAXRMWFLOW(GPM)40546580924)Adjustboricacidflowcontroller (HC-110A) inMANUALto9.5gpme.Adjustchargingpumpspeedtostabilize VCTlevel EOP:ECA-1.1LOSSOFEMERGENCY COOLANTRECIRCULATION REV:10PAGE21of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED29TryToAddMakeupToRCSFromAlternate Source:a.EvaluateUseOfRCDTPumps(RefertoER-RHR.1, RCDTPUMPOPERATION FORCORECOOLING)b.ConsultTSCtodetermine othermeansofmakeup30VerifySIACCUMIsolation Valves-OPEN~MOV-841~MOV-865IFvalveswereclosedtopreventSIACCUMnitrogeninjection, THENgotoStep34.IFNOT,THENperformthefollowing:

a.DispatchAOtolocallyclosebreakersforSIACCUMdischarge valves~MOV-841,MCCCposition12F~MOV-865,MCCDposition12Cb.OpenSIACCUMdischarge valves.

EOP:.ECA-1.1TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV:10PAGE22of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED31Depressurize AllIntactS/GsTo785PSIGa.CheckS/Gpressures

-GREATERTHAN785PSIGa.GotoStep32.b.Dumpsteamtocondenser atmaximumrateb.ManuallyorlocallydumpsteamatmaximumratefromintactS/G(s):oUseS/GARVs-OR-oOpensteamsupplyvalvestoTDAFWpump-OR-oDispatchAOtoperformthefollowing:

1)OpenS/GMSIVbypassvalves.2)Openprimingairejectorsteamisolation valves~V-3580~V-3581c.CheckS/Gpressures

-LESSTHAN785PSIGc.ReturntoStep3lb.d.StopS/Gdepressurization EOP:~ECA-1.1TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV:10PAGE23of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:TheintentofStep32istodepressurize S/Gsmoreslowly,butataratethatwillmaintainrequiredRVLISlevel.32Depressurize IntactS/GsTo200PSIGSlowlyToInjectSIACCUMs:a.Dumpsteamtocondenser asnecessary tomaintainappropriate RVLISindication:

oLevel(noRCPs)-BETWEEN68%AND73%[73%AND76%adverseCNMT]a.ManuallyorlocallydumpsteamfromintactS/G(s)tomaintainappropriate RVLISindication:

~oUseS/GARVs-OR;-OR-oFluidfraction(anyRCPrunning)-BETWEEN80%AND90%oOpensteamsupplyvalvestoTDAFWpump-OR-oDispatchAOtoperformthefollowing:

1)OpenaffectedS/GMSIVbypassvalve.2)Openprimingairejectorsteamisolation valves~V-3580~V-3581b.CheckS/Gpressures

-LESSTHAN200PSIGb.ReturntoStep32a.c.StopS/Gdepressurization EOP:~ECA-1.1LOSSOFEMERGENCY COOLANTRECIRCULATION REV10PAGE24of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED33CheckIfSIACCUMsShouldBeIsolated:

a.BothRCShotlegtemperatures LESSTHAN400'Fb.DispatchAOwithlockedvalvekeytolocallyclosebreakersforSIACCUMdischarge valves~MOV-841,MCCCposition12F~MOV-865,MCCDposition12Cc.CloseSIACCUMdischarge valves~MOV-841~MOV-865a.ContinuewithStep34.WHENbothRCShotlegtemperatures lessthan400'F,THENdoSteps33b,candd.c.Ventanyunisolated ACCUMs:1)Openventvalvesforunisolated SIACCUMs.~ACCUMA,AOV-834A~ACCUMB,AOV-834Bd.LocallyreopenbreakersforMOV-841andMOV-8652)OpenHCV-945.*34MonitorRCPOperation:

a.RCPs-ANYRUNNINGb.Checkthefollowing:

oRCP¹1sealD/P-GREATERTHAN220PSIDa.GotoStep36.b.StopaffectedRCP(s).oCheckRCPsealleakageWITHINTHENORMALOPERATING RANGEOFFIGURERCPSEALLEAKOFF EOP:~ECA-1.1TlTLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV:10PAGE25of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED35CheckSIPumpFlow-STABLEIFSIflowzeroorerratic,THENstoprunningSIpump.36Depressurize AllIntactS/GsToAtmospheric Pressure:

a.MaintaincooldownrateinRCScoldlegs-LESSTHAN100'F/HRb.Dumpsteamtocondenser b.ManuallyorlocallydumpsteamfromintactS/G(s):oUseS/GARVs-OR-oOpensteamsupplyvalvestoTDAFWpump-OR-oDispatchAOtoperformthefollowing:

1)OpenS/GMSIVbypassvalves.2)Openprimingairejectorsteamisolation valves~V-3580~V-3581 EOP:~ECA-1.1TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV:10PAGE26of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED37CheckIfRHRNormalCoolingCanBeEstablished:

a.RCScoldlegtemperature

-LESSTHAN350'Fa.ReturntoStep35.b.RCSpressure-LESSTHAN400psig[300psigadverseCNMT]c.Placeletdownpressurecontroller inMANUALCLOSEDb.ReturntoStep35.d.Checkfollowing valves-OPEN~AOV-371,letdownisolation valve~AOV-427,loopBcoldlegtoREGENHx~Atleast,oneletdownorificevalve(AOV-200A, AOV-200B, orAOV-202)e.VerifypressureonPI-135-LESSTHAN400PSIGd.Performthefollowing:

1)ResetbothtrainsofXYrelaysforAOV-371andAOV-427.2)OpenAOV-371andAOV-427.3)Openoneletdownorificevalve.IIe.ReturntoStep36.f.PlaceRCSoverpressure protection systeminservice(Referto0-7,ALIGNMENT ANDOPERATION OFTHEREACTORVESSELOVERPRESSURE PROTECTION SYSTEM)g.ConsultTSCtodetermine ifRHRnormalcoolingshouldbeestablished usingAttachment RHRCOOL EOP:~ECA-1.1LOSSOFEMERGENCY COOLANTRECIRCULATION REV10PAGE27of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED'38MaintainRCSHeatRemoval:a.UseRHRsystemifinserviceb.Dumpsteamtocondenser fromintactS/Gsb.ManuallyorlocallydumpsteamfromintactS/G(s):oUseS/GARVs-OR-oOpensteamsupplyvalvestoTDAFWpump-OR-oDispatchAOtoperformthefollowing:

1)OpenS/GMSIVbypassvalves.2)Openprimingairejectorsteamisolation valves~V-3580~V-3581IFnointactS/Gavailable andRHRsystemNOTinservice,THENusefaultedS/G.

EOP:~ECA-1.1LOSSOF.EMERGENCY COOLANTRECIRCULATION REV10PAGE28of28STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:Thisprocedure shouldbecontinued whileobtaining CNMThydrogensampleinStep39.39CheckCNMTHydrogenConcentration:

a.DirectRPtostartCNMThydrogenmonitorsasnecessary b.Hydrogenconcentration

-LESSTHAN0.5$b.ConsultTSCtodetermine ifhydrogenrecombiners shouldbeplacedinservice.40ConsultTSC-END-EOP:ECA-1.1LOSSOFEMERGENCY COOLANTRECIRCULATION REV10PAGE1of1ECA-1.1APPENDIXLISTTITLE1)FIGUREMINSUBCOOLING 2)FIGURESDM3)FIGUREMINRCSINJECTION 4)FIGURERCPSEALLEAKOFF5)ATTACHMENT RHRCOOL6)ATTACHMENT SFP-RWST7)ATTACHMENT RCPSTART8)ATTACHMENT SD-19)ATTACHMENT CNMTRECIRCFANS10)ATTACHMENT RHRSYSTEM11)ATTACHMENT N2PORVSPAGES

EOP:'ECA-1.1TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV10PAGE1of1FIGUREMINSUBCOOLING NOTE:Subcooling Margin=Saturation Temperature FromFigureBelow[-]CoreExitT/CIndication RC25002400230022002100200019001800170016001500140013001200110010009008007006005004003002001000SPRESSURE(PSIG)RCSPRESSUREINCREHENTS 20PSIGSUBCOOLED REGIONADVERSECNHTNORMALCNHTINADEQUATE SUBCOOLINGREGIONTEHPERATURE INCREHENTS 10'F200250300350400450500550600650700COREEXITSATURATION TEHPERATURE

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I EOP:'ECA-1.1TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV10PAGE1of1FIGURESDMNOTE:oCurveincludesallowance foronestuckrod.Add100ppmforeachadditional stuckrod.oToobtaincoreburnup,usePPCSpointIDBURNUP.BORONCONCENTRATION (PPH)18001600BORONINCREMENTS 20PPH140012001000ADEQUATESDM100PPHCONSERVATISH'NCLUDED 800600400BOTE200BURNUPINCREMENTS 100HWD/HTU0100020003000400050006000700080009000100001100012000CYCLE25BURNUP(HWD/MTU)

EOP:ECA-1.1'TITLE:LOSSOFEMERGENCY COOLANTRECIRCULATION REV:10PAGE1of1FIGUREMINRCSINJECTION RE(VIREOINJECTION FLOWRATE(GPH)35030025020015010050INADEQUATE INJECTION FLOW101001000TINEFROMREACTORTRIP(MINUTES) 10000

EOP:'ECA-1.1LOSSOFEMERGENCY COOLANTRECIRCULATION REV10PAGE1of1FIGURERCPSEALLEAKOFF¹1SEALLEAKRATE(GPH)6LEAKRATEINCREMENTS 0.2GPMNORHALOPERATING RANGEDPINCREMENTS 50PSI25050075010001250150017502000'2502500¹1SEALDP(RCSPRESS-VCTPRESS)PSI S~I

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