ML17263A272
| ML17263A272 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 04/21/1993 |
| From: | MARLOW T A ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17263A269 | List: |
| References | |
| FR-H.1, NUDOCS 9305140051 | |
| Download: ML17263A272 (56) | |
Text
EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:PAGE12of26ROCHESTERGASANDELECTRICCORPORATIONGINNASTATIONCONTROLLEDCOPYNUMBERTECHNICALREVIEWPORCREVIEWATE8<yPLANTSUPERTDENTFECTIVEDATECATEGORY1.0REVIEWEDBY:9305140051930505PDRADQCK05000244'~FPDR 0
EOP:FR-H.lRESPONSETOLOSSOFSECONDARYHEATSINKREV'2PAGE2of26A.PURPOSE-Thisprocedureprovidesactionsforresponding'toalossofsecondaryheatsinkinbothS/Gs.B.ENTRYCONDITIONS/SYMPTOMS1.ENTRYCONDITIONS-Thisprocedureisenteredfrom:a.E-O,REACTORTRIPORSAFETYINJECTION,whenminimumAFWflowisnotverifiedANDnormalrangelevelinbothS/Gsislessthan54[254adverseCNMT]b.F-0.3,HEATSINKCriticalSafetyFunctionStatusTreeonaREDcondition.
EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE3of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONoIFTOTALFEED"FLOWISLESSTHAN200GPMDUETOOPERATORACTION,THISPROCEDURESHOULDNOTBEPERFORMED.oFEEDFLOWSHOULD.NOTBEREESTABLISHEDTOAFAULTEDS/GIFANON-FAULTEDS/GISAVAILABLE,NOTE:AdverseCNMTvaluesshouldbeusedwheneverCNMTpressureisgreaterthan4psigorCNMTradiationisgreaterthan10+">R/hr.1CheckIfSecondaryHeatSinkIsRequired:a.RCSpressure-GREATERTHANANYNON-FAULTEDS/GPRESSUREb.Checkthefollowing:oRCScoldlegtemperature-GREATERTHAN350'FoRCSpressure-GREATERTHAN400psig[300psigadverseCNMT]a.IFRWSTlevelgreaterthan28%,THENgotoE-l,LOSSOFREACTORORSECONDARYCOOLANT,Stepl.IFRWSTlevellessthan28%,THENgotoES-1.3,TRANSFERTOCOLDLEGRECIRCULATION,Step1.b.TrytoplaceRHRSysteminservicewhilecontinuingwiththisprocedure:1)ResetSIifnecessary.2)PlaceletdownpressurecontrollerinMANUALCLOSED.3)Checkthefollowingvalves-OPEN'AOV-371,letdownisolationvalve~AOV-427,loopBcoldlegtoREGENHx~Atleastoneletdownorificevalve(AOV-200A,AOV-200B,orAOV-202)4)IFpressureonPI-135lessthan400psig,THENestablishRHRnormalcooling(RefertoAttachmentRHRCOOL).IFadequatecoolingwithRHRsystemestablished,THENreturntoprocedureandstepineffect.
EOP:FR-H.1RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE4of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED2MonitorSecondaryHeatSink:oVerifyeitherS/Glevel-WIDERANGEGREATERTHAN35inches[100inchesadverseCNMT]oVerifyPRZRpressure-LESSTHAN2335PSIGIFalossofheatsinkisindicated,THENperformthefollowing:a.TripbothRCPs.b.GotoStep13toini.tiatebleedandfeedcooling.
EOP:FR-H-1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE5of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED3TrytoEstablishAFWFlowToAtLeastOneS/G:a.CheckMCBindicationsforcauseofAFWfailure:1)VerifyCSTlevel-GREATERTHAN5FEET2)VerifybussessupplyingpowertoMDAFWpumps-ENERGIZED~Bus14~Bus163)CheckAFWvalvealignmentoAFWpumpdischargevalvesOPEN~MOV-4007~MOV-4008~MOV-3996oTDAFWpumpflowcontrolvalves*-OPEN~AOV-4297~AOV-4298b.CheckAFWpumps-ALLRUNNINGc.ChecktotalflowtoS/GsGREATERTHAN200GPMd.Returntoprocedureandstepineffect1)RefertoER-AFW.1,ALTERNATEWATERSUPPLYTOAFWPUMPS.2)ContinueattemptstorestorepowertoMDAFWpumps.3)DispatchAOtolocallyalignvalves,asnecessary.b.Performthefollowing:1)ManuallystartMDAFWpumps.2)CheckTDAFWpumpsteamsupplyvalvesOPEN.~MOV-3504A~MOV-3505A3)IfnecessarydispatchAOtolocallyresetTDAFWpumpgovernorvalve.4)IFNOAFWpumpsoperable,THENgotoStep4.c.ContinueattemptstorestoreAFWflowandgotoStep4.
~N EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE6of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED4StopBothRCPs*****************************************CAUTIONIFOFFSITEPOWERISLOSTAFTERSIRESET,THENSELECTEDSWPUMPSANDONECCWPUMPWILLAUTOSTARTONEMERGENCYD/G.MANUALACTIONWILLBEREQUIREDTORESTARTSAFEGUARDSEQUIPMENT.5ResetSIIfActuated
EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE7of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED6TryToEstablishMFWFlowToAtLeastOneS/G:a.CheckanyMFWpump-AVAILABLEb.Checkcondensatesystem:oCondensatepump-ANYRUNNINGoMFWpumpsuctionpressureGREATERTHAN185PSIGa.GotoStep7.b.IFoffsitepoweravailable,THENtrytoplacecondensatesysteminservice.IFNOT,THENgotoStep7.c.EstablishMFWflow:1)Check.MFWpumpdischargevalves-CLOSEDc.IFMFWflowcanNOTbeestablished,THENgotoStep7.2)VerifyMFWregulatingorbypassvalves-OPERABLE3)DispatchAOtorestoreMFWpumpSWcooling4)VerifyS/GblowdownkeyswitchesinNORMAL5)EnsureoneMFWpumprecircvalve-'OPEN6)StartselectedMFWpump7)OpenMFWpumpdischargevalve8)OpenMFWregulatingorbypassvalvesasnecessarytorestoreS/Gleveld.GotoStepll
EOP:FR-HE1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE8of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED7EstablishSAFWFlow:a.Performthefollowing:1)AlignSAFWsystemforoperation(RefertoAttachmentSAFW)a.IFgreaterthan200gpm,totalSAFWflowcanNOTbeestablished,THENgotoStep8.2)StartbothSAFWpumps3)VerifySAFWtotalflow-GREATERTHAN200GPMb.GotoStepll*****************************************CAUTIONIFWIDERANGELEVELINBOTHS/GSDECREASESTOLESSTHAN35INCHES[100INCHESADVERSECNMT]ORIFPRZRPRESSUREINCREASESTOGREATERTHAN2335PSIGDUETOLOSSOFHEATSINK,THEN.STEPS13THROUGH15SHOULDBEIMMEDIATELYINITIATEDFORBLEEDANDFEED.8EstablishConditionsto.FeedS/G(s)FromCondensateSystem:a.Checkcondensatepumps-ANYRUNNING'.Establishcondensateflowpath(RefertoAttachmentCONDtoS/G)c.De-energizePRZRheatersa.IFoffsitepoweravailable,THENmanuallystartatleastonecondensatepump.IFacondensatepumpcanNOTbestarted,THENgotoStep12.
4~k EOP:FR-H.1RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE9of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED9EstablishCondenserSteamDumpPressureControl:a.Verifycondenseravailable:oAnyMSIV-OPENoAnnunciatorG-15,STEAMDUMPARMED-LITa.PlaceS/GARVcontrollersinAUTOatdesiredpressureandgotoStep10.b.AdjustcondensersteamdumpcontrollerHC-484tohighestS/Gpressurec.VerifycondensersteamdumpcontrollerHC-484inAUTOd.PlacesteamdumpmodeselectorswitchtoMANUAL
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EOP:FR-H.1TLTLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE10of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONFOLLOWINGBLOCKOFAUTOMATICSIACTUATION,MANUALSIACTUATIONMAYBEREQUIREDIFCONDITIONSDEGRADE.NOTE:Ifauxiliarysprayisinuse,sprayflowmaybeincreasedbyclosingnormalchargingvalveAOV-294andnormalPRZRsprayvalves.10EstablishCondensateFlowtoS/G:a.CheckRCSpressure-GREATERTHAN1950PSIGb.DepressurizeRCStolessthan1950psig:1)Checkletdown-INSERVICE2)Depressurizeusingauxiliarysprayvalve(AOV-296)c.WHENPRZRpressurelessthan1950psig,THENplaceSIblockswitchestoBLOCK~TrainA~TrainBd.VerifySAFETYINJECTIONBLOCKEDstatuslight-LITe.ManuallyopenMFWflowcontrolvalvesasdesiredf.DumpsteamtocondenseratmaximumratetodepressurizeatleastoneS/Gtolessthan380psigg.VerifycondensateflowtoS/Gsa.GotoStep10c.1)UseonePRZRPORV.IFIAtoCNMT,AOV-5392,NOTopen,THENrefertoAttachmentN2PORVS.IFPORVNOTavailable,THENuseauxiliarysprayvalve,AOV-296andgotostep10c.2)UseonePRZRPORV.IFIAtoCNMT,AOV-5392,NOTopen,THENrefertoAttachmentN2PORVS.e.ManuallyopenMFWflowcontrolbypassvalves.f.ManuallyorlocallydumpsteamusingintactS/GARV.g.GotoStep12.
EOP:FR-H.1TITLERESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE11of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONIFCSTLEVELDECREASESTOLESSTHAN5FEET,THENALTERNATEWATERSOURCESFORAFWPUMPSWILLBENECESSARY(REFERTOER-AFW.1,ALTERNATEWATERSUPPLYTOAFWPUMPS).11CheckS/GLevels:a.NarrowrangelevelinatleastoneS/G-GREATERTHAN58[258adverseCNMT]b.Returntoprocedureandstepineffecta.IFfeedflowverifiedandlevelincreasinginatleastoneS/G,THENmaintainflowtorestorenarrowrangelevelgreaterthan58[258adverseCNMT]..IFNOTverified,THENgotoStep12.12VerifySecondaryHeatSink:a.Checkthefollowing:oEitherS/Glevel-WIDERANGEGREATERTHAN35inches[100inchesadverseCNMT]oPRZRpressure-LESSTHAN2335PSIGb.ReturntoStep1a.IFlossofheatsinkisindicated,THENperformthefollowing:1)TripbothRCPs.2)GotoStep13toinitiatebleedandfeedcooling.
Tt FR-HE1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE12of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONSTEPS13THROUGH15MUSTBEPERFORMEDQUICKLYINORDERTOESTABLISHRCSHEATREMOVALBYRCSBLEEDANDFEED.13ActuateSIandCI*****************************************CAUTIONWHENBASTLEVELDECREASESTO10%,THENSIPUMPAUTOMATICSWITCHOVERTORWSTSHOULDBEENSURED.14VerifyRCSFeedPath:a.CheckSIpumps-ATLEASTONERUNNINGb.CheckvalvealignmentforoperatingSIpumps-PROPEREMERGENCYALIGNMENTManuallystartpumpsandalignvalvesasnecessarytoestablishRCSfeedpath.IFafeedpathcanNOTbeestablished,THENcontinueattemptstoestablishfeedflow.ReturntoStep3.
EOP:FR-H.1RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE13of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED15EstablishRCSBleedPath:a.OpenbothPRZRPORVblockvalvesa.EnsurepowertoMCCssupplyingblockvalves.~MCCCforMOV-515~MCCDforMOV-516b.PlacebothPRZRPORVswitchestoOPENIFanyblockvalvecanNOTbeopened,THENdispatchAOtolocallycheckbreaker:~MOV-515,MCCCposition6C~MOV-516,MCCDposition6Cc.AlignRCSoverpressureprotectionsystemtoopenbothPRZRPORVs(RefertoAttachmentN2PORVS)d.VerifyPORVs-BOTHOPENd.IFBOTHPRZRPORVscanNOTbeopened,THENensurebothPORVswitchesinOPEN.
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EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE14of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONIFOFFSITEPOWERISLOSTAFTERSIRESET(THENSELECTEDSWPUMPSANDONECCWPUMPWILLAUTOSTARTONEMERGENCYD/G.MANUALACTIONWILLBEREQUIREDTORESTARTSAFEGUARDSEQUIPMENT.16CheckIfSICanBeReset:a.Checkthefollowing:oPRZRpressure-LESSTHAN1750PSIG-OR-oEithersteamlinepressure-LESSTHAN514PSIGb.ResetSIa.IFPRZRpressurestableorincreasing,THENresetSIandgoto.Step17'FPRZRpressuredecreasing,THENperformthefollowing:1)WHENPRZRpressurelessthan1750psig,THENresetSI.2)GotoStep17.17ResetCI:a.DepressCIresetpushbuttonb.VerifyannunciatorA-26,CONTAINMENTISOLATIONEXTINGUISHEDb.Performthefollowing:1)ResetSI.2)DepressCIresetpushbutton l"IIl~4tk0~~
EOP:FR-H.1TITLERESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE15of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED18VerifyAdequateSWFlow:a.VerifyatleasttwoSWpumpsRUNNINGb.VerifyAUXBLDGSWisolationvalves-ATLEASTONESETOPEN~MOV-4615andMOV-4734~MOV-4616andMOV-4735a.Manuallystartpumpsaspowersupplypermits(258kweach).IFlessthantwoSWpumpscanbeoperated,THENgotoStep21.b.EstablishSWtoAUXBLDG(RefertoAttachmentAUXBLDGSW).
I' EOP:FR-H.1RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE16of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED19EstablishIAtoCNMT:a.Verifynon-safeguardsbussesenergizedfromoffsitepoweroBus13normalfeed-CLOSED-OR-oBus15normalfeed-CLOSEDb.VerifyturbinebuildingSWisolationvalves-OPEN~MOV-4613andMOV-4670~MOV-4614andMOV-4664c.Verifyatleasttwoaircompressors-RUNNINGd:CheckIAsupply:oPressure-GREATERTHAN60PSIGoPressure-STABLEORINCREASINGe.ResetbothtrainsofXYrelaysforIAtoCNMTAOV-5392f.VerifyIAtoCNMTAOV-5392-OPENa.Performthefollowing:1)Closenon-safeguardsbustiebreakers:~Bus13toBus14tie~Bus15toBus16tie2)VerifyadequateemergencyD/Gcapacitytorunaircompressors(75kweach).IFNOT,THENevaluateifCNMTRECIRCfansshouldbestopped(RefertoAttachmentCNMTRECIRCFANS).3)WHENbus15restored,THENresetcontrolroomlighting.b.Manuallyalignvalves.c.Manuallystartaircompressorsaspowersupplypermits(75kweach).IFaircompressorscanNOTbestarted,THENdispatchAOtolocallyresetcompressorsasnecessary.d.Performthefollowing:1)ContinueattemptstorestoreIA(RefertoAP-IA.1,LOSSOFINSTRUMENTAIR).2)ContinuewithStep21.WHENIArestored,THENdoSteps19e,fand20.
e' EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE17of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED20RestoreRCSOverpressureProtectionSystemToStandby:a.VerifyinstrumentbusD-ENERGIZEDa.Performthefollowing:1)EnsuresteamdumpmodecontrolinMANUAL.b.PlacereliefvalvePC-431andPC-430armingswitchestoBLOCK~SOV-8619A~SOV-8619B2)RestorepowertoinstrumentbusDfromMCCBorMCCA(maintenancesupply).c.CloseSURGETKVLVs~SOV-8616A~SOV-8616BNOTE:PRZRPORVsmayclosetemporarilyuntiladequateIApressureisrestoredinCNMT.21VerifyAdequateRCSBleedPatn:oCoreexitT/Cs-STABLEORDECREASINGoLevel(noRCPs)-GREATERTHAN68%'73%adverseCNMT]Performthefollowing:a.OpenRxheadventvalves.~SOV-590~SOV-591~SOV-592~SOV-593b.DepressurizeatleastoneintactS/GtoatmosphericpressureusingS/GARV~c.AlignanyavailablelowpressurewatersourcetodepressurizedS/Gs.
EOPIFR-H.lTITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE18of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONACTIONSTAKENTOINITIATERCSFEEDANDBLEEDSHALLNOTBEREVERSEDWHENPERFORMINGIMMEDIATEACTIONSOFE-O,REACTORTRIPORSAFETYINJECTION.22CompleteTheImmediateActionsOfE-O,REACTORTRIPORSAFETYINJECTION,WhileContinuingWithThisProcedureCAUTIONTHERCSBLEEDPATHMUSTBEMAINTAINEDEVENIFRCSPRESSUREREMAINSGREATERTHANSIPUMPSHUTOFFHEAD.23MaintainRCSHeatRemoval:oMaintainSIflowoMaintainbothPRZRPORVsandblockvalves-OPEN24CheckNormalPowerAvailableToChargingPumps:oBus14normalfeedbreaker-CLOSEDoBus16normalfeedbreaker-CLOSEDVerifyadequateemergencyD/Gcapacitytorunchargingpumps(75kweach).IFNOT,THENevaluateifCNMTRECIRCfanscanbestopped(RefertoAttachmentCNMTRECIRCFANS).
FR-H.1TITLE:'IRESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE19of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED25CheckIfChargingFlowHasBeenEstablished:a.Chargingpumps-ANYRUNNINGa.Performthefollowing:1)IFCCWflowislosttoanyRCPthermalbarrierORanyRCP¹1sealoutlettemperatureoffscalehigh,THENdispatchAOwithkeytoRWSTgatetolocallyclosesealinjectionneedlevalve(s)toaffectedRCP:~RCPA,V-300A~RCPB,V-300B2)EnsureHCV-142open,demandat0%.b.AlignchargingpumpsuctiontoRWST:oLCV-112B-OPENoLCV-112C-CLOSEDb.IFLCV-112BcanNOTbeopened,THENperformthefollowing:1)VerifychargingpumpANOTrunningandplaceinPULLSTOP.c.Startchargingpumpsasnecessaryandestablishmaximumchargingflow2)DispatchAOtolocallyopenmanualchargingpumpsuctionfromRWST(V-358locatedinchargingpumproom).3)WHENV-358open,THENdirectAOtocloseV-268toisolatechargingpumpsBandCfromVCT(V-268locatedinchargingpumproom).
0ll1~>I EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE20of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONoIFRWSTLEVELDECREASESTOLESSTHAN28%,THENTHESISYSTEMSHOULDBEALIGNEDFORCOLDLEGRECIRCULATIONUSINGSTEPS1THROUGH13OFES-1.3,TRANSFERTOCOLDLEGRECIRCULATION.oIFCONTAINMENTPRESSUREINCREASESTOGREATERTHAN28PSIG,CONTAINMENTSPRAYSHOULDBEVERIFIED.oRHRPUMPSSHOULDNOTBERUNLONGERTHAN1HOURWITHOUTCCWTOTHERHRHEATEXCHANGERS.26ContinueAttemptsToEstablishSecondaryHeatSinkInAtLeastOneS/G:~AFWflow~MainFWflow~StandbyAFWflow~Condensateflow27CheckForAdequateSecondaryHeatSink:a.ChecknarrowrangelevelinatleastoneS/G-GREATERTHAN5%[25%adverseCNMT]b.AdjustS/GARVcontrollerstoexistingS/Gpressurea.ReturntoStep26.
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EOP:FR-H.1RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE21of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONIFTHERCSISWATERSOLID,THENANYINCREASEINRCSTEMPERATUREMAYRESULTINASIGNIFICANTRCSPRESSUREINCREASE.RCSHEATUPSHOULDBEPREVENTED.28MonitorRCSTemperatures:oCoreexitT/Cs-DECREASINGoRCShotlegtemperaturesDECREASINGPerformthefollowing:a.ControlsteamdumpandfeedflowtoestablishnaturalcirculationandstabilizeRCStemperature.b.ReturntoStep26.29CheckCCWPumps-ANYRUNNINGPerformthefollowing:a.IFanyRCP¹1sealoutlettemperatureoffscalehigh,THENisolateCCWtothermalbarrierofaffectedRCP(s).~RCPA,MOV-749AandMOV-759A~RCPB,MOV-749BandMOV-759Bb.ManuallystartoneCCWpump(124kw).30Verify'ReactorHeadVentValves-CLOSEDManuallyclosevalves.~SOV-590~SOV-591~SOV-592~SOV-593 I4 EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE22of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED**************************%**************CAUTIONIFRCSISSOLID,THENTERMINATIONOFFEEDANDBLEEDMAYRESULTINRAPIDRCS.PRESSUREINCREASEUNLESSRCSINFLOWANDOUTFLOWARECAREFULLYCONTROLLED.31CheckIfOneOfThreeSIPumpsShouldBeStopped:a.ThreeSIpumps-RUNNINGb.RCSsubcoolingbasedoncoreexitT/Cs-GREATERTHAN35'F[90'FadverseCNMT)USINGFIGUREMINSUBCOOLINGc.CheckPRZRlevel-GREATERTHAN13%[40%adverseCNMT]d.StoponeSIpumpa.GotoStep32.b.Checkthefollowing:oRCSpressuregreaterthan1625psig[1825psigadverseCNMT)oRCSsubcoolingbasedoncoreexitT/CsgreaterthanO'usingFigureMINSUBCOOLINGIFNOT,THENgotoStep34'.DoNOTstopSIpump.GotoStep34.,
C EOP:FR-H.lTITLEIRESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE23of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED32CheckIfOneOfTwoSIPumpsShouldBeStopped:a.Two.SIpumps-RUNNINGb.'eterminerequiredRCSsubcoolingfromtable:a.GotoStep33.ChargingPUIIlpAvailabilityNONEONETHREERCSSubcoolingCriteria120'F[200'FadverseCNMT]115'F[190'FadverseCNMT].105'F[180'FadverseCNMT]100'F[175'FadverseCNMT]c.RCSsubcoolingbasedoncoreexitT/Cs-GREATERTHANVALUEFROMTABLEABOVEUSINGFIGUREMINSUBCOOLINGd.PRZRlevel-GREATERTHAN13%[40%adverseCNMT]e.StoponeSIpumpc.Checkthefollowing:oRCSpressuregreaterthan1625psig[1825psigadverseCNMT]oRCSsubcoolingbasedoncoreexitT/CsgreaterthanO'usingFigureMINSUBCOOLINGIFNOT,THENgotoStep34.d.DoNOTstopSIpump.GotoStep34.
EOP:FR-H.1TITLE:RESPONSETOLOSS.OFSECONDARYHEATSINKREV:12PAGE24of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED33CheckIfLastSIPumpShouldBeStopped:a.OneSIpump-RUNNINGb.Checkthefollowing:oRCSsubcoolingbasedoncoreexitT/CsgreaterthanO'usingFigureMINSUBCOOLINGoRCSpressuregreaterthan1625psig[1825psigadverseCNMT)c.PRZRlevel-GREATERTHAN13%[40%adverseCNMT]d.StoprunningSIpumpe.GotoStep36a.GotoStep36.b.GotoStep34.c.DoNOTstopSIpump.GotoStep34.NOTE:AfterclosingaPORV,itmaybenecessarytowaitforRCSpressuretoincreasetopermitstoppingSIpumpsinSIreductionsteps.34CheckPRZRPORVsAndAssociatedBlockValves-ANYBLEEDPATHOPENGotoappropriateplantprocedure:oIFRWSTlevelgreaterthan28%,THENgotoE-l,LOSSOFREACTORORSECONDARYCOOLANT.-OR-oIFRWSTlevellessthan28%,THENgotoES-1.3,TRANSFERTOCOLDLEGRECIRCULATION.
t EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE25of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONIFRCSISSOLID,CLOSUREOFPORVSWILLRESULTINRAPIDRCSPRESSUREINCREASEUNLESSRCSINFLOWANDOUTFLOWARECAREFULLYCONTROLLED.35IsolatePRZRBleedPaths:a.PRZRPORVs-BOTHOPENb.CloseoneopenPRZRPORVc.ReturntoStep31a.Performthefollowing:1)Stopallbutonechargingpump~2)ControlchargingflowasnecessarytomaintainRCSpressureandPRZRlevel.3)Establishexcessletdownasfollows:oPlaceAOV-312toNORMAL.oEnsureCCWpumprunning.oManuallyopenCCWfromexcessletdownHxopen(AOV-745).oOpenexcessletdownisolationvalveAOV-310.oSlowlyopenHCV-123.b.ClosePORVblockvalve.IFblockvalvecanNOTbeclosed,THENgotoappropriateplantprocedure:oIFRWSTlevelgreaterthan28%,THENgotoE-l,LOSSOFREACTORORSECONDARYCOOLANT.-OR-oIFRWSTlevellessthan28%,THENgotoES-1.3,TRANSFERTOCOLDLEGRECIRCULATION.
A EOP:FR-H.1RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE26of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED36CheckPRZRPORVs-BOTHCLOSEDClosebothPRZRPORVs.IFanyPRZRPORV"canNOTbeclosed,THENmanuallycloseitsblockvalve.37CheckIfRHRPumpsShouldBeStopped:a.CheckRCSpressure:1)Pressure-GREATERTHAN250psig[465psigadverseCNMT]2)Pressure-STABLEORINCREASINGa.Gotoappropriateplantprocedure:oIFRWSTlevelgreaterthan28%,THENgotoE-l,LOSSOFREACTORORSECONDARYCOOLANT,Step1.'OR-b.StopRHRpumpsandplaceinAUTOoIFRWSTlevellessthan28%,THENgotoES-1.3,TRANSFERTOCOLDLEGRECIRCULATION,Step1.38StartChargingPumpsAsNecessaryAndControlChargingFlowToMaintainPRZRLevel39GoToES-1.1,SITERMINATION'tep8-END-
FOP:FR-H.1RESPONSETOLOSSOFSECONDARYHEATSINKREV12PAGE1of1FR-H.lAPPENDIXLISTTITLEPAGES1)FIGUREMINSUBCOOLING2)ATTACHMENTCNMTRECIRCFANS3)ATTACHMENTCONDTOS/G4)ATTACHMENTN2PORVS5)ATTACHMENTSD-16)ATTACHMENTRHRCOOL7)ATTACHMENTSAFW8)ATTACHMENTAUXBLDGSW
EOP:FR-H.1T!TLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:12PAGE1of1FIGUREMINSUBCOOLINGNOTE:SubcoolingMargin=SaturationTemperatureFromFigureBelow[-]CoreExitT/CIndicationRC.25002400230022002100200019001800170016001500140013001200110010009008007006005004003002001000SPRESSURE(PSIG)RCSPRESSUREINCREHENTS20PSIGSUBCOOLEDREGIONADVERSECNHTNORHALCNHTINADEQUATESUBCOOLINGREGIONTEHPERATUREINCREMENTS10'F200250300350400450500550600650700COREEXITSATURATIONTEHPERATURE('F)
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