ML17309A572

Rev 10 to EOP ECA-1.1, Loss of Emergency Coolant Recirculation.

ML17309A572
Person / Time
Site:	Ginna
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:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV:10PAGE1of28ROCHESTERGASANDELECTRICCORPORATIONGINNASTATIONCONTROLLEDCOPYNUMBERTECHNICALREVIEWPORCREVIEWDATELANTSUPERINTENDT+'Dd~EFFECTIVEDATECATEGORY1.0REVIEWEDBY:r0+2804---t.>c.r)PgRAga~i~89g~420'05000gy~F'DRra EOP:iECA-1.1TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV:10PAGE2of28A.PURPOSE-Thisprocedureprovidesactionstorestoreemergencycoolantrecirculationcapability,todelaydepletionoftheRWSTbyaddingmakeupandreducingoutflow,andtodepressurizetheRCStominimizebreakflow.B.ENTRYCONDITIONS/SYMPTOMS1.ENTRYCONDITIONS-Thisprocedureisenteredfrom:a.E-l,LOSSOFREACTORORSECONDARYCOOLANT,whencoldlegrecirculationcapabilitycannotbeverified.b~ES13gTRANSFERTOCOLDLEGRECIRCULATION/whenrecirculationcannotbeestablishedormaintained.c~ECA1~2gLOCAOUTSIDECONTAINMENTgwhenaLOCAoutsidecontainmentcannotbeisolated.

EOP:4ECA-1'TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV10PAGE3of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONoIFEMERGENCYCOOLANTRECIRCULATIONCAPABILITYISRESTOREDDURINGTHISPROCEDURE,FURTHERRECOVERYACTIONSSHOULDCONTINUEBYRETURNINGTOPROCEDUREANDSTEPINEFFECT.oIFSUCTIONSOURCEISLOSTTOANYSIORCNMTSPRAYPUMP,THEPUMPSHOULDBESTOPPED.NOTE:AdverseCNMTvaluesshouldbeusedwheneverCNMT~ressureisgreaterthan4psigorCNMTradiationisgreaterthan10+R/hr.1VerifyCNMTSumpRecirculationCapability:a.CheckRHRsystem:oRHRpumps-OPERABLEoRHRsuctionvalvesfromsumpB-OPERABLEa.Manuallyorlocallytrytorestoreatleastonetrain(RefertoAttachmentRHRSYSTEMtoidentifyminimumcomponentsforonetrain).~MOV-850A~MOV-850BoRHRpumpdischargetoRxvesseldelugevalvesOPERABLE~MOV-852A~MOV-852BoCCWpumps-OPERABLEoCCWtoRHRHx-OPERABLE~MOV-738A~MOV-738Bb.CheckatleasttwoSWpumpsRUNNINGb.ManuallystartSWpumpsaspowersupplypermits(258kweach).

EOP:iECA-1.1~~TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV:10PAGE4of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED2AddMakeupToRNSTAsNecessaryoRefertoS-9J,BLENDINGTORWST-OR-oRefertoS-3'D,TRANSFERRINGWATERFROMCVCSHUT(S)TORWSTORSFP-OR-oRefertoAttachmentSFP-RWST*****************************************CAUTIONIFCSTLEVELDECREASESTOLESSTHAN5FEET,THENALTERNATEWATERSOURCESFORAFWPUMPSWILLBENECESSARY(REFERTOER-AFW.1,ALTERNATEWATERSUPPLYTOAFWPUMPS).*****************************************NOTE:1DAFWpumpflowcontrolvalvesfailopenonlossofIA.*3MonitorIntactS/GLevels:a.Narrowrangelevel-GREATERTHAN5S[25%adverseCNMT]b.Controlfeedflowtomaintainnarrowrangelevelbetween17%[25%adverseCNMT]and50%a.Maintaintotal.feedflowgreaterthan200gpmuntilnarrowrangelevelgreaterthan5%[25%adverseCNMT]inatleastoneS/G.b.IFnarrowrangelevelinanyS/Gcontinuestoincrease,THENstopfeedflowtothatS/G.

EOP:iECA-1.1TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV:10PAGE5of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINEDNOTE:ShutdownmarginshouldbemonitoredduringRCScooldown(RefertoFigureSDM).4InitiateRCSCooldownToColdShutdown:a.EstablishandmaintaincooldownrateinRCScoldlegs-LESSTHAN100'F/HRb.DumpsteamtocondenserfromintactS/G(s)b.ManuallyorlocallydumpsteamfromintactS/G(s):oUseS/GARVs-OR-oOpenTDAFWpumpsteamsupplyvalves.-OR-oDispatchAOtoperformthefollowing:1)OpenS/GMSIVbypassvalves.2)Openprimingairejectorsteamsupplyrootvalve,V-3578.3)Open1Aand1Bprimingairejectorisolationvalves.~V-3580~V-3581IFnointactS/Gavailable,THENusefaultedS/G.

EOP:iECA-1.1LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV:10PAGE6of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED5VerifyCNMTRECIRCFansRunning:a.Allfans-RUNNINGb.Charcoalfilterdampersgreenstatuslights-EXTINGUISHEDa.Manuallystartfans.b.Dispatchpersonnelwithrelayrackkeytolocallyopendampersusingtriprelaypushbuttonsinrelayroomracks.~AUXRELAYRACKRA-2forfanA~AUXRELAYRACKRA-3forfanC*6MonitorRWSTLevel-GREATERTHAN154GotoStep25.

EOP:'CA-1.1I~TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV10PAGE7of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED7DetermineCNMTSprayRequirements:a.DeterminenumberofCNMTspraypumpsrequiredfromtable:RWSTLEVELCNMTPRESSURECNMTRECIRCFANSRUNNINGCNMTSPRAYPUMPSREQUIREDGREATERTHAN60PSIGGREATERTHAN28'ETWEEN28PSIGAND60PSIG0OR12OR3ALLLESSTHAN28PSIGBETWEEN15'ND28'REATERTHAN60PSIGBETWEEN28PSIGAND60PSIG0,1,2,OR3ALLLESSTHAN28PSIGLESSTHAN158b.CNMTspraypumpsrunning-EQUALTOMINIMUMNUMBERREQUIREDb.Manually,operateCNMTspraypumpsasnecessary.IFCNMTspraypump(s)mustbestopped,THENplaceswitchinPULLSTOP.

C' EOP:~ECA-1.1TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV10PAGE8of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONIFOFFSITEPOWERISLOSTAFTERSIRESET,THENSELECTEDSWPUMPSANDONECCWPUMPWILLAUTOSTARTONEMERGENCYD/G.MANUALACTIONWILLBEREQUIREDTORESTARTSAFEGUARDSEQUIPMENT.8ResetSIIfNecessary9EstablishOneTrainOfSIFlowa.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-1.1LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV:10PAGE9of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED11ResetCI:a.DepressCIresetpushbuttonb.VerifyannunciatorA-26,CNMTISOLATION-EXTINGUISHEDb.Performthefollowing:1)ResetSI.2)DepressCIresetpushbutton.12VerifyAdequateSWFlow:a.CheckatleasttwoSWpumpsRUNNINGa.ManuallystartSWpumpsaspowersupplypermits(258kweach).IFlessthantwoSWpumpsrunning,THENperformthefollowing:1)EnsureSWisolation.2)DispatchAOtoestablishnormalshutdownalignment(RefertoAttachmentSD-1)b.DispatchAOtoestablishnormalshutdownalignment(RefertoAttachmentSD-1)3)GotoStep15.

EOP:~ECA-1.1TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV10PAGE10of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED13EstablishIAtoCNMT:a.Verifynon-safeguardsbussesenergizedfromoffsitepoweroBus13normalfeed-CLOSED-OR-oBus15normalfeed-CLOSEDb.VerifySWisolationvalvestoturbinebuilding-OPEN~MOV-4613and.MOV-4670~MOV-4614andMOV-4664cdVerifyatleasttwoaircompressors-RUNNING.d.CheckIAsupply:oPressure-GREATERTHAN60PSIGoPressure-STABLEORINCREASINGe.ResetbothtiainsofXYrelaysforIAtoCNMTAOV-5392f.VerifyIAtoCNMTAOV-5392-OPENa.Performthefollowing:1)Close.non-safeguardsbustiebreakers:~Bus13toBus14tie'Bus15toBus16tie2)VerifyadequateemergencyD/Gcapacitytorunaircompressors(75kweach).IFNOT,THENevaluateifCNMTRECIRCfansshould.bestopped(RefertoAttachmentCNMTRECIRCFANS).3)WHENbus15restored,THENresetcontrolroomlighting.b.Manuallyalignvalves.c.Manuallystartaircompressorsaspowersupplypermits(75kweach).IFaircompressorscanNOTbestarted,THENdispatchAOtolocallyresetcompressorsasnecessary.d.Performthefollowing:1)ContinueattemptstorestoreIA(RefertoAP-IA.1,LOSSOFINSTRUMENTAIR).2)ContinuewithStep14.WHENIArestored,THENdoSteps13eandf.

EOP:~ECA-1.1LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV10PAGEllof28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED14EstablishRequiredChargingLineFlow:a.Chargingpumps-ANYRUNNINGa.Performthefollowing:1)IFCCWflowislosttoanyRCPthermalbarrierORanyRCP¹1sealoutlettemperatureoffscalehigh,THENdispatchAOwithRWSTareakeytolocallyclosesealinjectionneedlevalvestoaffectedRCP:~RCPA,V-300A~RCPB,V-300Bb.Establish20gpmtotalchargingflow')EnsureHCV-142demandat0%.3)Startonechargingpump.'

EOP:iECA-l.lTITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV:10PAGE12of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONIFRCPSEALCOOLINGHADPREVIOUSLYBEENLOST,THENTHEAFFECTEDRCP(S)SHOULDNOTBESTARTEDPRIORTOASTATUSEVALUATION.*********************'********************15CheckRCPStatus:a.RCSsubcoolingbasedoncoreexitT/Cs-GREATERTHANO'USINGFIGUREMINSUBCOOLINGa.StopallRCPsandgotoStep16.b.RCPs-ATLEASTONERUNNINGb.TrytostartanRCP:1)EstablishconditionsforstartinganRCPoBus11Aor11BenergizedoRefertoAttachmentRCPSTARTc.StopallbutoneRCP2)StartoneRCP.

EOP:'ECA-1.1LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV'0PAGE13of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*16MonitorSITerminationCriteria:a.RCSsubcoolingbasedoncoreexitT/Cs-GREATERTHAN50'FUSINGFIGUREMINSUBCOOLINGLimitRCSinjectionflowtothatrequiredtoremovedecayheat:oDeterminerequiredinjectionflowusingFigureMINRCSINJECTIONb.CheckRVLISindication:oLevel(noRCPs)-GREATERTHAN68%[73%adverseCNMT]-OR-oFluidfraction(anyRCPrunning)-GREATERTHAN80%oStopSIpumpsasnecessarytoestablishandmaintainminimumrequiredSIflow.oIFrequiredinjectionflowislessthan100gpm,THENestablishrequiredchargingflowandgotoStep17.IFrequiredinjectionflowisgreaterthan100gpm,THENperformthefollowing:a.EnsureoneSIpumprunningb.EstablishminimumchargingflowforRCPsealinjection.c.ConsultTSCtodetermineifSIpumpdischargevalvesshouldbelocallythrottled.(Lockedvalvekeyrequired.)d.GotoStep18.

EOP:'ECA-1.1TITLELOSSOFEMERGENCYCOOLANTRECIRCULATIONREV10PAGE14of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED17StopSIAndRHRPumpsAndPlaceInAuto18VerifyAdequateRCSMakeupFlow:a.CheckRVLISindication:oLe~el(noRCPs)-GREATERTHAN68%[73%adverseCNMT]-OR-a.IncreaseRCSinjectionflowasnecessarytomaintainRVLISindicationstable.oFluidfraction(anyRCPrunning)-GREATERTHAN80%b.CoreexitT/Cs-STABLEORDECREASINGb.IncreaseRCSinjectionflowtomaintaincoreexitT/Csstableordecreasing.

EOP:'ECA-1.1TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV10PAGE15of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINEDNOTE:IfnormalRCPsupportconditionscanNOTbesatisfied,thenanyrunningRCP(s)shouldbestopped.19DepressurizeRCSToDecreaseRCSSubcooling:a.CheckRCSsubcoolingbasedoncoreexitT/Cs-GREATER,THAN20'FUSINGFIGUREMINSUBCOOLINGa.GotoStep20.b.NormalPRZRspray-AVAILABLEb.UseonePRZRPORV.IFIANOTavailable,THENrefertoAttachmentN2PORVS.IFnoPRZRPORVavailable,THENuseauxiliarysprayvalve(AOV-296).c.DepressurizeRCSuntileitherofthefollowingconditionssatisfied:oRCSsubcoolingbasedoncoreexitT/Cs-LESSTHAN10'FUSINGFIGUREMINSUBCOOLING-OR-oPRZRlevel-GREATERTHAN87%[75%adverseCNMT]d.WHENeitherconditionmet,THENstopRCSdepressurizatione.CheckRCSsubcooling-GREATERTHANO'FUSINGFIGUREMINSUBCOOLINGe.IncreaseRCSmakeupflowasnecessarytorestoresubcooling.

EOP:~ECA-1.1TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV:10PAGE16of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED20CheckIfRHRNormalCoolingCanBeEstablished:a.RCScoldlegtemperature-LESSTHAN350'Fa.GotoStep21.b.RCSpressure-LESSTHAN400psig[300psigadverseCNMT]c.Placeletdownpressurecontroller(PCV-135)inMANUALCLOSEDb.GotoStep21.d.Checkfollowingvalves-OPEN~AOV-371,letdownisolationvalve~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.PlaceRCSoverpressureprotectionsysteminservice(Referto0-7,ALIGNMENTANDOPERATIONOFTHEREACTORVESSELOVERPRESSUREPROTECTIONSYSTEM)g.ConsultTSCtodetermineifRHRnormalcoolingshouldbeestablishedusingAttachmentRHRCOOL EOP:~ECA-1.1~~LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV:10PAGE17of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED21CheckIfSIACCUMsShouldBeIsolated:a.BothRCShotlegtemperaturesLESSTHAN400'Fb.DispatchAOwithlockedvalvekeytolocallyclosebreakersforSIACCUMdischargevalves~MOV-841,MCCCposition12F~MOV-865,MCCDposition12Cc.CloseSIACCUMdischargevalves~MOV-841~MOV-865a.ContinuewithStep22.WHENbothRCShotlegtemperatureslessthan400'F,THENdoSteps21b,candd.c.VentanyunisolatedACCUMs:1)OpenventvalvesforunisolatedSIACCUMs.d.LocallyreopenbreakersforMOV-841andMOV-865~ACCUMA,AOV-834A~ACCUMB,AOV-834B2)OpenHCV-945.*22MonitorRCPOperation:a.RCPs-ANYRUNNINGb.Checkthefollowing:oRCP¹1sealD/P-GREATERTHAN220PSIDa.GotoStep23.b.StopaffectedRCP(s).oCheckRCPsealleakageWITHINTHENORMALOPERATINGRANGEOFFIGURERCPSEALLEAKOFF EOP:ECA-1.1TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV10PAGE18of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED23CheckCoreExitT/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:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV:10PAGE19of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED26CheckSIpumpflow-STABLEIFSIflowzeroorerratic,THENstoprunningSIpump.27TryToAddMakeupToRCSFromVCT:ha.CheckVCTlevel-GREATERTHAN5%b.VerifychargingpumpsalignedtoVCToLCV-112C-OPENoLCV-112B-CLOSEDa.StopchargingpumpstakingsuctionfromVCTandcontinuewithStep28.WHENVCTlevelgreaterthan5%,THENdoSteps27bandc.b.Manuallyalignvalvesasnecessary.c.Startchargingpumpsasnecessarytoestablishtwopumpsrunning

EOP:~ECA-1.1TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV10PAGE20of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED28EstablishMaximumVCTMakeup:a.CheckRMWcontrolarmed-REDLIGHTLITb.CheckVCTlevel-LESSTHAN20%c.CheckVCTmakeupsystem-OPERATINGINAUTOd.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.AdjustchargingpumpspeedtostabilizeVCTlevel EOP:ECA-1.1LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV:10PAGE21of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED29TryToAddMakeupToRCSFromAlternateSource:a.EvaluateUseOfRCDTPumps(RefertoER-RHR.1,RCDTPUMPOPERATIONFORCORECOOLING)b.ConsultTSCtodetermineothermeansofmakeup30VerifySIACCUMIsolationValves-OPEN~MOV-841~MOV-865IFvalveswereclosedtopreventSIACCUMnitrogeninjection,THENgotoStep34.IFNOT,THENperformthefollowing:a.DispatchAOtolocallyclosebreakersforSIACCUMdischargevalves~MOV-841,MCCCposition12F~MOV-865,MCCDposition12Cb.OpenSIACCUMdischargevalves.

EOP:.ECA-1.1TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV:10PAGE22of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED31DepressurizeAllIntactS/GsTo785PSIGa.CheckS/Gpressures-GREATERTHAN785PSIGa.GotoStep32.b.Dumpsteamtocondenseratmaximumrateb.ManuallyorlocallydumpsteamatmaximumratefromintactS/G(s):oUseS/GARVs-OR-oOpensteamsupplyvalvestoTDAFWpump-OR-oDispatchAOtoperformthefollowing:1)OpenS/GMSIVbypassvalves.2)Openprimingairejectorsteamisolationvalves~V-3580~V-3581c.CheckS/Gpressures-LESSTHAN785PSIGc.ReturntoStep3lb.d.StopS/Gdepressurization EOP:~ECA-1.1TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV:10PAGE23of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINEDNOTE:TheintentofStep32istodepressurizeS/Gsmoreslowly,butataratethatwillmaintainrequiredRVLISlevel.32DepressurizeIntactS/GsTo200PSIGSlowlyToInjectSIACCUMs:a.DumpsteamtocondenserasnecessarytomaintainappropriateRVLISindication:oLevel(noRCPs)-BETWEEN68%AND73%[73%AND76%adverseCNMT]a.ManuallyorlocallydumpsteamfromintactS/G(s)tomaintainappropriateRVLISindication:~oUseS/GARVs-OR;-OR-oFluidfraction(anyRCPrunning)-BETWEEN80%AND90%oOpensteamsupplyvalvestoTDAFWpump-OR-oDispatchAOtoperformthefollowing:1)OpenaffectedS/GMSIVbypassvalve.2)Openprimingairejectorsteamisolationvalves~V-3580~V-3581b.CheckS/Gpressures-LESSTHAN200PSIGb.ReturntoStep32a.c.StopS/Gdepressurization EOP:~ECA-1.1LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV10PAGE24of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED33CheckIfSIACCUMsShouldBeIsolated:a.BothRCShotlegtemperaturesLESSTHAN400'Fb.DispatchAOwithlockedvalvekeytolocallyclosebreakersforSIACCUMdischargevalves~MOV-841,MCCCposition12F~MOV-865,MCCDposition12Cc.CloseSIACCUMdischargevalves~MOV-841~MOV-865a.ContinuewithStep34.WHENbothRCShotlegtemperatureslessthan400'F,THENdoSteps33b,candd.c.VentanyunisolatedACCUMs:1)OpenventvalvesforunisolatedSIACCUMs.~ACCUMA,AOV-834A~ACCUMB,AOV-834Bd.LocallyreopenbreakersforMOV-841andMOV-8652)OpenHCV-945.*34MonitorRCPOperation:a.RCPs-ANYRUNNINGb.Checkthefollowing:oRCP¹1sealD/P-GREATERTHAN220PSIDa.GotoStep36.b.StopaffectedRCP(s).oCheckRCPsealleakageWITHINTHENORMALOPERATINGRANGEOFFIGURERCPSEALLEAKOFF EOP:~ECA-1.1TlTLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV:10PAGE25of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED35CheckSIPumpFlow-STABLEIFSIflowzeroorerratic,THENstoprunningSIpump.36DepressurizeAllIntactS/GsToAtmosphericPressure:a.MaintaincooldownrateinRCScoldlegs-LESSTHAN100'F/HRb.Dumpsteamtocondenserb.ManuallyorlocallydumpsteamfromintactS/G(s):oUseS/GARVs-OR-oOpensteamsupplyvalvestoTDAFWpump-OR-oDispatchAOtoperformthefollowing:1)OpenS/GMSIVbypassvalves.2)Openprimingairejectorsteamisolationvalves~V-3580~V-3581 EOP:~ECA-1.1TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV:10PAGE26of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED37CheckIfRHRNormalCoolingCanBeEstablished:a.RCScoldlegtemperature-LESSTHAN350'Fa.ReturntoStep35.b.RCSpressure-LESSTHAN400psig[300psigadverseCNMT]c.PlaceletdownpressurecontrollerinMANUALCLOSEDb.ReturntoStep35.d.Checkfollowingvalves-OPEN~AOV-371,letdownisolationvalve~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.PlaceRCSoverpressureprotectionsysteminservice(Referto0-7,ALIGNMENTANDOPERATIONOFTHEREACTORVESSELOVERPRESSUREPROTECTIONSYSTEM)g.ConsultTSCtodetermineifRHRnormalcoolingshouldbeestablishedusingAttachmentRHRCOOL EOP:~ECA-1.1LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV10PAGE27of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED'38MaintainRCSHeatRemoval:a.UseRHRsystemifinserviceb.DumpsteamtocondenserfromintactS/Gsb.ManuallyorlocallydumpsteamfromintactS/G(s):oUseS/GARVs-OR-oOpensteamsupplyvalvestoTDAFWpump-OR-oDispatchAOtoperformthefollowing:1)OpenS/GMSIVbypassvalves.2)Openprimingairejectorsteamisolationvalves~V-3580~V-3581IFnointactS/GavailableandRHRsystemNOTinservice,THENusefaultedS/G.

EOP:~ECA-1.1LOSSOF.EMERGENCYCOOLANTRECIRCULATIONREV10PAGE28of28STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINEDNOTE:ThisprocedureshouldbecontinuedwhileobtainingCNMThydrogensampleinStep39.39CheckCNMTHydrogenConcentration:a.DirectRPtostartCNMThydrogenmonitorsasnecessaryb.Hydrogenconcentration-LESSTHAN0.5$b.ConsultTSCtodetermineifhydrogenrecombinersshouldbeplacedinservice.40ConsultTSC-END-EOP:ECA-1.1LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV10PAGE1of1ECA-1.1APPENDIXLISTTITLE1)FIGUREMINSUBCOOLING2)FIGURESDM3)FIGUREMINRCSINJECTION4)FIGURERCPSEALLEAKOFF5)ATTACHMENTRHRCOOL6)ATTACHMENTSFP-RWST7)ATTACHMENTRCPSTART8)ATTACHMENTSD-19)ATTACHMENTCNMTRECIRCFANS10)ATTACHMENTRHRSYSTEM11)ATTACHMENTN2PORVSPAGES

EOP:'ECA-1.1TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV10PAGE1of1FIGUREMINSUBCOOLINGNOTE:SubcoolingMargin=SaturationTemperatureFromFigureBelow[-]CoreExitT/CIndicationRC25002400230022002100200019001800170016001500140013001200110010009008007006005004003002001000SPRESSURE(PSIG)RCSPRESSUREINCREHENTS20PSIGSUBCOOLEDREGIONADVERSECNHTNORMALCNHTINADEQUATESUBCOOLINGREGIONTEHPERATUREINCREHENTS10'F200250300350400450500550600650700COREEXITSATURATIONTEHPERATURE('F)

I EOP:'ECA-1.1TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV10PAGE1of1FIGURESDMNOTE:oCurveincludesallowanceforonestuckrod.Add100ppmforeachadditionalstuckrod.oToobtaincoreburnup,usePPCSpointIDBURNUP.BORONCONCENTRATION(PPH)18001600BORONINCREMENTS20PPH140012001000ADEQUATESDM100PPHCONSERVATISH'NCLUDED800600400BOTE200BURNUPINCREMENTS100HWD/HTU0100020003000400050006000700080009000100001100012000CYCLE25BURNUP(HWD/MTU)

EOP:ECA-1.1'TITLE:LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV:10PAGE1of1FIGUREMINRCSINJECTIONRE(VIREOINJECTIONFLOWRATE(GPH)35030025020015010050INADEQUATEINJECTIONFLOW101001000TINEFROMREACTORTRIP(MINUTES)10000

EOP:'ECA-1.1LOSSOFEMERGENCYCOOLANTRECIRCULATIONREV10PAGE1of1FIGURERCPSEALLEAKOFF¹1SEALLEAKRATE(GPH)6LEAKRATEINCREMENTS0.2GPMNORHALOPERATINGRANGEDPINCREMENTS50PSI25050075010001250150017502000'2502500¹1SEALDP(RCSPRESS-VCTPRESS)PSI S~I