ML17262A543
| ML17262A543 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 06/14/1991 |
| From: | WIDAY J A ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17262A536 | List: |
| References | |
| FR-H.1, NUDOCS 9107110296 | |
| Download: ML17262A543 (56) | |
Text
c,~~EOP:F@-H.1TITLERESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE1of26ROCHESTERGASANDELECTRICCORPORATIONGINNASTATION'CONTROLLEDCOPYNUMBERTECHNICALREVIEWPORCREVIEWDATETSUPERINTENDNTC'EFECTEDATECATEGORY1.0REVIEWEDBY:91,07110296910619PDRADOCK05000244FPDR CW~~4*N~eV$
EOP:FR-H.1RESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE2of26A.PURPOSE-Thisprocedureprovidesactionsforrespondingtoalossofsecondaryheatsinkin'bothS/Gs.B.ENTRYCONDITIONS/SYMPTOMS1.ENTRYCONDITIONS-Thisprocedureisenteredfrom:a.E-O,REACTORTRIPORSAFETYINJECTION,whenminimumAFWflowisnotverified.b.F-0.3,HEATSINKCriticalSafetyFunctionStatusTreeonaREDcondition.
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EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE3of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONoIFTOTALFEEDFLOWIS,LESSTHAN200GPMDUETOOPERATORACTION,THISPROCEDURESHOULDNOTBEPERFORMED.oFEEDFLOWSHOULDNOTBEREESTABLISHEDTOAFAULTEDS/GIFANON-FAULTEDS/GISAVAILABLE.NOTE:AdverseCNMTvaluesshouldbeusedwheneverCNMTpressureisgreaterthan4psigorCNMTradiationisgreaterthan10-~~R/hr.1CheckIf.SecondaryHeatSinkIsRequired:a.RCSpressure-GREATERTHANANYNON-FAULTEDS/GPRESSUREb.Checkthefollowing:oRCScoldlegtemperature-GREATERTHAN350'FoRCSpressure-GREATERTHAN400psig[300psigadverseCNMT)a.IFRWSTlevelgreaterthan28X,THENgotoE-l,LOSSOFREACTOROR,SECONDARYCOOLANT,Stepl.IFRWSTlevellessthan28X,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-135lesstEan400psig,THENestablishRHRnormalcooling(RefertoAttachmentRHRCOOL).IFadequatecoolingwithRHRsystemestablished,THENreturntoprocedureandstepineffect.
~~C EOP:FR-H.1RESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE4of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED2MonitorSecondaryHeatSink:oVerifyeitherS/Glevel-WIDERANGEGREATERTHAN35inches[100inchesadverseCNMT]oVerifyPRZRpressure-LESSTHAN2335PSIGIpalossofheatsinkisindicated,THENperformthefolloving:a.TripbothRCPs.b.GotoStep12toinitiatebleedandfeedcooling.
Ilei+4vtif,Wei8i~A EOP:FR-H.1T!TLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE5of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED3TrytoEstablishAFWFlowToAtLeastOneS/G:a.CheckMCBindicationsforcauseofAFWfailure:1)VerifyCSTlevel-GREATERTHAN5FEET2)VerifybussessupplyingpowertoMDAFVpumps-ENERGIZED~Bus14~Bus163)CheckAFVvalvealignmentoAFWpumpdischargevalvesOPEN~MOV-4007~MOV-4008~MOV-3996oTDAFWpumpflowcontrolvalves-OPEN~AOV-4297~AOV-4298b.CheckAFVpumps-ALLRUNNINGc.ChecktotalflowtoS/Gs-GREATERTHAN200GPMd.Returntoprocedureandstepineffect1)RefertoER-AFV.1,ALTERNATEWATERSUPPLYTOAFVPUMPS.2)ContinueattemptstorestorepowertoMDAFWpumps.3)DispatchAOtolocallyalignvalvesasnecessary.b.Performthefollowing:1)ManuallystartMDAFWpumps.2)CheckTDAFWpumpsteamsupplyvalvesOPEN.~MOV-3504A~MOV-3505A3)Ifnecessarydispatch"AOtolocallyresetTDAFWpumpgovernorvalve.c.ContinueattemptstorestoreAFWflowandgotoStep4.
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EOP:FR-H.1TITLERESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE6of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED4StopBothRCPs
~rI EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV10PAGE7of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONIFOFFSITEPOWERISLOSTAFTERSIRESET,SELECTEDSWPUMPSANDONECCWPUMPVILLAUTOSTARTONEMERGENCYD/G.MANUALACTIONVILLBEREQUIREDTORESTARTSAFEGUARDSEQUIPMENT.5TryToEstablishMFWFlowToAtLeastOneS/G:a.CheckanyMFWpump-AVAILABLEb.Checkcondensatesystem:oCondensatepump-ANYRUNNINGoMFVpumpsuctionpressure-GREATERTHAN185PSIGc.ResetSIifnecessaryd.EstablishMFWflow:1)CheckMFWpumpdischargevalves-CLOSED2)VerifyMFWflowcontrolbypassvalve-OPERABLE3)DispatchAOtorestoreMFVpumpSVcooling4)VerifyS/GblowdownkeyswitchesinNORMAL5)EnsureoneMFVpumprecircvalve-OPEN6)StartselectedMFVpump7)OpenMFVpumpdischargevalve8)OpenMFVflowcontrolbypassvalvesasnecessarytorestoreS/Glevele.GotoStep10a.GotoStep6.b.IFoffsitepoweravailable,THENtrytoplacecondensatesysteminservice.IFNOT,THENgotoStep6.d.IFMFVflowcanNOTbeestablished,THENgotoStep6.
I'\'1qgJo EOP:FR-H.lTITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE8of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED6EstablishSAFWFlow:a.Performthefollowing:1)AlignSAFVsystemforoperation(RefertoAttachmentSAFV)2)StartbothSAPVpumps3)VerifySAPVtotalflow-GREATERTHAN200GPMa.IFgreaterthan200gpm,totalSAFWflowcanNOTbeestablished,THENgotoStep7.b.GotoStep10***************,.**************************CAUTIONIFVIDERANGELEVELINBOTHS/GSDECREASESTOLESSTHAN35INCHES[100INCHESADVERSECNMT]ORIPPRZRPRESSUREINCREASESTOGREATERTHAN2335PSIGDUETOLOSSOFHEATSINK,THENSTEPS12THROUGH14SHOULDBEIMMEDIATELYINITIATEDPORBLEEDANDFEED.7CheckCondensatePumps-ANYRUNNINGrIFoffsitepoweravailable,THENmanuallystartatleastonecondensatepump.IFacondensatepumpcanNOTbestarted,THENgotoStep11.
F~w.41'I EOP:FR-H.1TITLE:RESPONSETOLOSS"'OFSECONDARYHEATSINKREV10PAGE9of26STEPACTION/EXPECTEDRESPONSE'ESPONSENOTOBTAINEDEstablishCondenserSteamDumpPreSsureControl:a.Verifycondenseravailable:oAnyMSIV-OPEN'oAnnunciatorG-15,STEAMDUMP-LITa.PlaceS/GARVcontrollersinAUTOatdesiredpressureandgoto,Step9.b.AdjustcondensersteamdumpcontrollerHC-484todesiredpressureandverifyinAUTOc.PlacesteamdumpmodeselectorsvitchtoMANUAL l~h~~I1 EOP:FR-H.lTITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE10of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED***************"**************************CAUTIONFOLLOWINGBLOCKOFAUTOMATICSIACTUATION,MANUALSIACTUATIONMAYBEREQUIREDIFCONDITIONSDEGRADE.NOTE:Ifauxiliarysprayisinuse,sprayflowmaybeincreasedbyclosingnormalchargingvalveAOV-294andnormalPRZRsprayvalves.9TryToEstablishFeedFlowFromCondensateSystem:a.Establishcondensateflowpath(RefertoAttachmentCONDTOS/G)b.DepressurizeRCStolessthan1950psig:1)DeenergizePRZRheaters2)Checkletdown-INSERVICE3)Depressurizeusingauxiliarysprayvalve(AOV-296)c.WHENRCSpressurelessthan1950psig,THENperformthefollowing:1)BlockSI2)DumpsteamtocondenseratmaximumratetodepressurizeatleastoneS/Gtolessthan380psigd.VerifycondensateflowtoS/Gsa.GotoStep11.2)UseonePRZRPORV.IFIANOTavailable,THENrefertoAttachmentN2PORVS.IFPORVNOT'available,THENuseauxiliarysprayvalve,AOV-296andgotoStep9c.2)ManuallyorlocallydumpsteamusingintactS/GARV.d.GotoStep11.
las EOP:FR-H.1RESPONSETOLOSSOFSECONDARYHEATSINKREV10PAGE11of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED10CheckS/GLevels:a.NarrowrangelevelinatleastoneS/G-GREATERTHAN5%[25%adverseCNMT]b.Returntoprocedureandstepineffecta.IFfeedflowverified,toatleastoneS/G,THENmaintainflowtorestorenarrowrangelevelgreaterthan5%[25%adverseCNMT].IFNOTverified,THENgotoStep11.11VerifySecondary.HeatSink:a.Checkthefollowing:oEitherS/Glevel-WIDERANGEGREATERTHAN'35inches[100inchesadverseCNMT]oPRZRpressure-LESSTHAN2335PSIGb.ReturntoStep1a.IFlossofheatsinkisindicated,THENperformthefollowing:1)TripbothRCPs.2)GotoStep12toinitiatebleedandfeedcooling.*****************************************CAUTIONSTEPS12THROUGH14MUSTBEPERFORMEDQUICKLYINORDERTOESTABLISHRCSHEATREMOVALBYRCSBLEEDANDFEED.cA'***4****4*4*******************4******12ActuateSIandCI I>A*~4$P~
EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE12of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONWHENBASTLEVELDECREASESTO10X,THENSIPUMPAUTOMATICSWITCHOVERTORWSTSHOULDBEENSURED.13Vex'ifyRCSFeedPath:a.CheckSIpumps-ATLEASTONERUNNINGb.CheckvalvealignmentforoperatingSIpumps-PROPEREMERGENCYALIGNMENTManuallystartpumpsandalignvalvesasnecessarytoestablishRCSfeedpath.IPafeedpathcanNOTbeestablished,THENcontinueattemptstoestablishfeedflow.ReturntoStep3.14EstablishRCSBleedPath:a.OpenbothPRZRPORVblockvalvesa.EnsurepowertoMCCssupplyingblockvalves.~MCCCforMOV-515~MCCDforMOV-516b.PlacebothPRZRPORVswitchestoOPENXPanyblockvalvecanNOTbeopened,THENdispatchAOtolocallycheckbreaker:~MOV-515,MCCCposition6C~MOV-516,MCCDposition6Cc.AlignRCSoverpressurizationnitrogensystemtoopenbothPRZRPORVs(RefertoAttachmentN2PORVS)c.'PBOTHPRZRPORVscanNOTbeopened,THENperformthefollowing:1)EnsurebothPORVswitchesinOPEN.2)GotoStep15.
I)c4,rII EOPDFR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV10PAGE13of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONIFOFFSITEPOWERISLOSTAFTERSIRESET,SELECTEDSWPUMPSANDONECCVPUMPVILLAUTOSTARTONEMERGENCYD/G.MANUALACTIONVILLBEREQUIREDTORESTARTSAFEGUARDSEQUIPMENT.15CheckIfSICanBeReset:a.Checkthefollowing:oPRZRpressure-LESSTHAN1750PSIG-OR-oEithersteamlinepressure-LESSTHAN514PSIGb.ResetSIa.IFPRZRpressurestableorincreasing,THENresetSIandgotoStep16.IFPRZRpressuredecreasing,THENperformthefollowing:1)VHENPRZRpressurelessthan1750psig,THENresetSI.2)GotoStep16.16ResetCI:a.DepressCIresetpushbuttonb.VerifyannunciatorA-26,CONTAINMENTISOLATION-EXTINGUISHEDb.Performthefollowing:1)ResetSI.2)DepressCZresetpushbuttou I~~ll EOPFR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE14of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED17VerifyAdequateSWFlow:a.VerifyatleasttwoSWpumps-RUNNINGb.VerifyAUXBLDGSWisolationvalves-ATLEASTONESETOPEN~MOV-4615andMOV-4734~MOV-4616andMOV-4735a.Manuallystartpumpsaspowersupplypermits(258kweach).IPlessthantwoSWpumpscanbeoperated,THENgotoStep20.b.EstablishSWtoAUXBLDG(RefertoAttachmentAUXBLDGSW).
a<<Cj1' EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV10PAGE15of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED18EstablishIAtoCNMT:a.Verifynon-safe'guardsbussesenergizedfromoffsitepoweroBus13normalfeed-CLOSED-OR-oBus15normalfeed-CLOSEDb.VerifyturbinebuildingSWisolationvalves-OPEN~MOV-4613andMOV-4670~MOV-4614andMOV-4664c.Verifyatleasttwoaircompressors-RUNNINGd.ChecklAsupply:oPressure-GREATERTHAN6OPSIGoPressure-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)ContinuewithStep20.WHENIArestored,THENdoSteps18e,fand19.
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EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE16of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED19RestoreRCSOverpressurizationNitrogenSystemToStandby:a.VerifyinstrumentbusD-ENERGIZEDb.PlacereliefvalvePC-431andPC-430armingswitchestoBLOCK~SOV-8619A~SOV-8619Ba.Performthefollowing:.1)EnsuresteamdumpmodecontrolinMANUAL.2)RestorepowertoinstrumentbusDfromMCCBorMCCA(maintenancesupply).c.CloseSURGETKVLVs~SOV-8616A~SOV-8616BNOTE:PRZRPORVsmay"losetemporarilyuntiladequateIApressureisrestoredinCNMT.20VerifyAdequateRCSBleedPath-BOTHPRZRPORVSOPENIRPRZRPORVscanNOTbeopened,THENperformthefollowing:a.OpenRxvesselheadvents.~SOV-590'SOV-591~SOV-592~SOV-593b.Depressurizeatleastoneintact*S/GtoatmosphericpressureusingS/GARV.c.AlignanyavailablelowpressurewatersourcetothedepressurizedS/Gs.
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(~EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE17of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONTHERCSBLEEDPATHMUSTBEMAINTAINEDEVENIFRCSPRESSUREREMAINSGREATERTHANSIPUMPSHUTOFFHEAD.~N*********~***********~*****************21MaintainRCSHeatRemoval:oMaintainSIflowoMaintainbothPRZRPORVsandblockvalves-OPEN22CheckNormalPowerAvailableToChargingPumps:oBus14normalfeedbreaker-CLOSEDoBus16normalfeedbreaker-CLOSEDVerifyadequateemergencyD/Gcapacitytorunchargingpumps(75kweach).IFNOT,THENevaluateifCNMTRECIRCfanscanbestopped(RefertoAttachmentCNMTRECIRCFANS).
A EOP:FR-H.1TITLERESPONSETOLOSSOFSECONDARYHEATSINKREV10PAGE18of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED2FCheekIfChargingFlowHaeBeenEstablished:a.Chargingpumps-ANYRUNNINGb.AlignchargingpumpsuctiontoRWST:oLCV-112B-OPENoLCV-112C-CLOSEDa.Performthefollowing:1)IRCCWflowislosttoanyRCPthermalbarrierORanyRCPflsealoutlettemperatureoffscalehigh,THENdispatchAOwithkeytoRWSTgatetolocallyclosesealinjectionneedlevalve(s)toaffectedRCP:~RCPA,V-300A~RCPB,V-300B2)EnsureHCV-142open,demandatOX.b.IRLCV-112BcanNOTbeopened,THENperformthefollowing:1)VerifychargingpumpANOTrunningandplaceinPULLSTOP.2)DispatchAOtolocallyopenmanualchargingpumpsuctionfromRWST(V-358locatedinchargingpumproom).c.Startchargingpumpsasnecessaryandestablishmaximumchargingflow3)WHENV-358open,THENdirectAOtocloseV-268toisolatechargingpumpsBandCfromVCT(V-268locatedinchargingpumproom).
faI,Q'I(t1 EOP:FR-H.lTITLERESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE19of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONoIFRWSTLEVELDECREASESTOLESSTHAN28X,THENTHESISYSTEMSHOULDBEALIGNEDFORCOLDLEGRECIRCULATIONUSINGSTEPS1THROUGH13OFES-1.3,TRANSFERTOCOLDLEGRECIRCULATION.oIFCONTAINMENTPRESSUREINCREASESTOGREATERTHAN28PSIG,CONTAINMENTSPRAYSHOULDBEVERIFIED.24ContinueAttemptsToEstablishSecondaryHeatSinkInAtLeastOneS/G:~AFWflow~MainFWflow~StandbyAFWflow~Condensateflow25CheckForAdequateSecondaryHeatSink:a.ChecknarrowrangelevelinatleastoneS/G-GREATERTHAN5X[25XadverseCNMT]b.AdjustS/GARVcontrollerstoexistingS/Gpressurea.ReturntoStep24.
4P@elg;g4~4 EOP:FR-H.lTITLERESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE20of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONIFTHERCSISWATERSOLID,THENANYINCREASEINRCSTEMPERATUREMAYRESULTINASIGNIFICANTRCSPRESSUREINCREASE.RCSHEATUPSHOULDBEPREVENTED.C26MonitorRCSTemperatures:oCoreexitT/Cs-DECREASINGoRCShotlegtemperatures-DECREASINGPerformthefollowing:a.ControlsteamdumpandfeedflowtoestablishnaturalcirculationandstabilizeRCStemperature.b.ReturntoStep24.27CheckCCWPumps-ANYRUNNINGPerformthefollowing:a.IFanyRCP$1sealoutlettemperatureoffscalehigh,THEN.isolateCCWtothermalbarrierofaffectedRCP(s).+RCPA,MOV-749AandMOV-759A~RCPB,MOV-749BandMOV-759Bb.ManuallystartoneCCWpump(1241').
EOP:FR-H.1TiTLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE21of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED***************************************'**CAUTION,IPRCSISSOLID,THENTERMINATIONOFFEEDANDBLEEDMAYRESULTINRAPIDRCSPRESSUREINCREASEUNLESSRCSINFLOWANDOUTFLOWARECAREFULLYCONTROLLED.28CheckIfOneOfThreeSIPumpsShouldBeStopped:a.ThreeSIpumps-RUNNINGb.RCSsubcooli'ngbasedoncoreexitT/Cs-GREATERTHAN35'P[90'FadverseCNMT]USINGPIGUREMINSUBCOOLINGc.CheckPRZRlevel-GREATERTHAN13X[40XadverseCNMT]d.StoponeSIpumpa.GotoStep29.b.Checkthefolloving:oRCSpressuregreaterthan1625psig[1825psigadverseCNMT]oRCSsubcoolingbasedoncoreexitT/CsgreaterthanO'usingFigureMINSUBCOOLINGIPNOT,THENgotoStep"31.c.DoNOTstopSIpump.GotoStep31.
IIar~0>>Vl,b EOP:FR-H.1TITLE:RESPONSETOL'OSSOFSECONDARYHEATSINKREV:10PAGE22of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED29CheckIfOneOfTwoSIPumpsShouldBqStopped:a.TwoSIpumps-RUNNINGb.DeterminerequiredRCSsubcoolingfromtable:a.GotoStep30.ChargingPumpAvailabilityNONEONETVOTHREERCSSubcoolingCriteria120'F[200'PadverseCNMT]115'F[190'PadverseCNMT]105'F[180'FadverseCNMT]100'F[175'PadverseCNMT]c.RCSsubcoolingbasedoncoreexitT/Cs-GREATERTHANVALUEPROMTABLEABOVEUSINGPIGUREMINSUBCOOLINGd.PRZRlevel-GREATERTHAN13K[40XadverseCNMT]e.StoponeSIpumpc.Checkthefollowing:oRCSpressuregreaterthan1625psig[1825psigadverseCNMT]oRCSsubcoolingbasedoncoreexitT/CsgreaterthanO'PusingFigureMINSUBCOOLINGIFNOT,THENgotoStep31.d.DoNOTstopSIpump.GotoStep31.
~j'4'Cl EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE23of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED30CheckIfLastSIPumpShouldBeStopped:a.OneSIpump-RUNNINGb.Checkthefollowing:oRCSsubcoolingbasedoncoreexitT/CsgreaterthanO'usingFigureMINSUBCOOLINGoRCSpressuregreaterthan1625'sig[1825psigadverseCNMT]c.PRZRlevel-GREATERTHAN13X[40XadverseCNMT]d.StoprunningSIpumpe.GotoStep32a.GotoStep32.b.GotoStep31.c.DoNOTstopSIpump.GotoStep31.
IJhr-EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE24of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINEDNOTE:AfterclosingaPORV,ltmaybenecessarytowaitforRCSpressuretoincreasetopermitstoppingSIpumpsinSteps28,29and30.31CheckPRZRPORVStat;us:a.PRZRPORVs-ANYOPENb.PRZRPORVs-BOTHOPENa.CloseanyopenRxvesselhead'entvalvesandgotoappropriateplantprocedure:oIFRWSTlevelgreaterthan28%,THENgotoE-l,LOSSOFREACTORORSECONDARYCOOLANT,Stepl.-OR-oIFRWSTlevellessthan28%,THENgotoES-1.3,TRANSFERTOCOLDLEGRECIRCULATION,Stepl.b.IFPRZRlevelgreaterthan75%(65%adverseCNMTJ,THENperformthefollowing:1)Establishexcessletdownasfollows:oPlaceAOV-312toNORMAL.oEnsureCCWpumprunning.oEnsureCCWfromexcessletdownHxopen(AOV-745).oOpenexc'essletdownisolationvalveAOV-310.ThisStepcontinuedonthenextpage.oSlowlyopenHCV-123.2)Stopallbutonechargingpumpanddecreasechargingflowtoasnecessarytocontrol-RCSpressure.
I1l EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV10PAGE25of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED(Step31continuedfrompreviouspage)c.CloseoneopenPRZRPORVc.ClosePORVblock'valve.IPblockvalvecanNOTbeclosed,THENgotoappropriateplantprocedure:oIPRWSTlevelgreaterthan28%,THENgotoE-l,LOSSOFREACTORORSECONDARYCOOLANT,Stepl.-OR-oIFRWSTlevellessthan28%,THENgotoES-1.3,TRANSFERTOCOLDLEGRECIRCULATION,Stepl.d.ReturntoStep28******k**********************************CAUTIONIPRCSISSOLED,CLOSUREOFPORVSWILLRESULTINRAPIDRCSPRESSUREINCREASEUNLESSRCSINPLOWANDOUTPLOWARECAREFULLYCONTROLLED.'I32CheckPRZRPORVsAndRxVesselHeadVentValves-ALLCLOSEDCloseallPRZRPORVsandRxvesselheadventvalves.IPanyPRZRPORVcanNOTbeclosed,THENmanuallycloseitsblockvalve.
1kfWl EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV10PAGE26of26STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED33CheckIfRHRPumpsShouldBeStopped:a.CheckRCSpressure:1)Pressure-GREATERTHAN250psig[465psigadverseCNMT)2)Pressure-STABLEORINCREASINGa.Gotoappropriateplantprocedure:oIFRWSTlevelgreaterthan28X)THENgotoE-l,LOSSOFREACTORORSECONDARYCOOLANT,Stepl.-OR-b.StopRHRpumpsandplaceinAUTOoIFRWSTlevellessthan28X)THENgotoES-1.3,TRANSFERTOCOLDLEGRECIRCULATION)Step1.34StartChargingPumpsAsNecessaryAndControlChargingFlowToMaintainPRZRLevel35GoToES-1.1)SITERMINATION)Step8-END-IA0 EOP:FR-H.1TITLE:RESPONSETOLOSSOFSECONDARYHEATSINKREV:10PAGE1of1FR-H.1APPENDIXLISTTITLEPAGES1)FIGUREMINSUBCOOLING2)ATTACHMENTCNMTRECIRCFANS3)ATTACHMENTCONDTOS/G4)ATTACHMENTN2PORVS5)ATTACHMENTSD-16)ATTACHMENTRHRCOOL7)ATTACHMENTSAFW8)ATTACHMENTAUXBLDGSW Tl4.'I EOP:FR-H.lTITLERESPONSETOLOSSOFSECONDARYHEATSINKREV10PAGE1of1FIGUREMINSUBCOOLINGNOTE:SubcoolingMargin=SaturationTemperatureFromFigureBelow[-]CoreExitT/CIndicationRC250024002300220021002000190018001700~1600140013001200110010009008007006005004003002001000SPRESSURE(PSIG)RCSPRESSUREINCREMENTS20PSIGSUBCOOLEDREGIONECNMTADVERSNORMALCNMTINADEQUATESUBCOOLINGREGIONTEMPERATUREINCREMENTS10'F200250300350400450500550600650700COREEXITSATURATIONTEMPERATURE('F) l~,r