ML17309A576
| ML17309A576 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 04/20/1995 |
| From: | MARLOW T A ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| References | |
| ECA-3.3, NUDOCS 9504280026 | |
| Download: ML17309A576 (64) | |
Text
EOP:ECA-).3T1TLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE1of27ROCHESTERGASANDELECTRICCORPORATIONGINNASTATIONCONTROLLEDCOPYNUMBERTECHNICALREVIEWPORCREVIEWDATEW/'7PLANTSPERINTEDENTEFFECTIVEDATECATEGORY1.0REVIEWEDBY:QO'.9504280026950420PDRADOCK05000244IPPDR
~Jv'Vh EOP:ECA-3.9IITITLESGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE2of27A.PURPOSE-ThisprocedureprovidesactionsforaSGTRwithcoincidentlossofnormalandauxiliaryPRZRspraysandPORVs.B.ENTRYCONDITIONS/SYMPTOMS1.ENTRYCONDITIONS-Thisprocedureisenteredfrom:a.E-3,STEAMGENERATORTUBERUPTURE,whenPRZRpressurecontrolisnotavailable.
V EOP:ECA-3.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV12PAGE3of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINEDNOTE:oFoldoutpageshouldbeopenANDmonitoredperiodically.oAdverseCNMTvaluesshouldbeusedwheneverCNMTpressureisgreaterthan4psigorCNMTradiationisgreaterthan10+5R/hr.1CheckRupturedS/GNarrowRangeLevel-LESSTHAN67%[554adverseCNMT]GotoStep8.2CheckRCPStatus-ATLEASTONERUNNINGTrytostartoneRCP:a.EstablishconditionsforstartingRCP.oBus11AandBusllBenergizedoRefertoAttachmentRCPSTARTb.StartoneRCP.IFnoRCPcanbestarted,THENgotoStep4.3CheckIFNormalPRZRSprayAvailable:a.VerifyIAtoCNMT-AVAILABLEa.Performthefollowing:1)PlacePRZRheatercontrolgrouptoPULLSTOP.2)PlacePRZRheaterbackupgrouptoOFF.3)PlacenormalsprayvalvecontrollerstoMANUALat0%.b.GotoE-3,STEAMGENERATORTUBERUPTURE,Step214)GotoStep4.
<</'ll4 EOP:ECA-3.3TITLESGTRWITHOUTPRESSURIZERPRESSURECONTROLREV12PAGE4of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED4TryToRestorePRZRPORV:a.Blockvalves-ATLEASTONEOPEN~MOV-516forPCV-430~MOV-515forPCV-431Ca.OpenoneblockvalveunlessitwasclosedtoisolateanopenPORV.IfblockvalvescanNOTbeopened,THENdispatchAOtolocallyensurebreakerstoblockvalvesclosed.b.CheckIAtoCNMT-AVAILABLEc.VerifyatleastonePRZRPORVflowpath-AVAILABLEd.GotoE-3,STEAMGENERATORTUBERUPTURE,Step22~MOV-515,MCCCposition6C~MOV-516,MCCDposition6Cb.RefertoAttachmentN2PORVStooperatePORVs.c.GotoStep5.
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EOP:ECA-3.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV12PAGE5of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINEDNOTE:IfauxiliarysprayistheonlymeansofRCSpressurecontrol,THENthe320'FATlimitbetweenthespraylineandPRZRdoesnotapply.5TryToEstablishAuxiliarySpray:a.Chargingpumps-ATLEASTONERUNNINGa.Performthefollowing:1)IFCCWflowislosttoanyRCPthermalbarrierORanyRCP¹1sealoutlettemperatureoffscalehigh,THENlocallyisolatesealinjectiontoaffectedRCP.~RCPA,V-300A~RCPB,V-300B2)EnsureHCV-142demandat0%.b.Establishauxiliarysprayflow:1)Openauxiliarysprayvalve(AOV-296)3)Startchargingpumpsasnecessary.IFchargingnotavailable,THENgotoStep6.b.IFauxiliaryspraycanNOTbeestablished,THENgotoStep6.2)ClosechargingvalvetoloopBcoldleg(AOV-294)c.GotoE-3,STEANGENERATORTUBERUPTURE,Step21b
/1%hht~WI~tI~J'~:4 EOP:ECA-3.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE6of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONIFCSTLEVELDECREASESTOLESSTHAN5FEET,THENALTERNATEWATERSOURCESFORAFWPUMPSWILLBENECESSARY(REFERTOER-AFW.1)ALTERNATEWATERSUPPLYTOAFWPUMPS).NOTE:TDAFWpumpflowcontrolvalvesfailopenonlossofIA.*6MonitorIntactS/GLevel:a.Narrowrangelevel-GREATERTHAN5%[25%adverseCNMT]b.Controlfeedflowtomaintainnarrowrangelevelbetween17%[25%adverseCNMT]and50%a.Maintaintotalfeedflowgreaterthan200gpmuntilnarrowrangelevelgreaterthan5%[25%adverseCNMT)inatleastoneS/G.b.IFnarrowrangelevelinintactS/Gcontinuestoincreaseinanuncontrolledmanner,THENgotoECA-3.1,SGTRWITHLOSSOFREACTORCOOLANT-SUBCOOLEDRECOVERYDESIRED,Step1.7CheckPRZRLevel-GREATERTHAN54[304adverseCNMT]ReturntoStepl.
~4A4P EOP:Ec.A-3.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE7of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED8CheckIfSICanBeTerminated:a.RCSsubcoolingbasedoncoreexitT/Cs-GREATERTHANO'USINGFIGUREMINSUBCOOLINGb.Secondaryheatsink:oTotalfeedflowtoS/GsGREATERTHAN200GPMAVAILABLE-OR-a.DoNOTstopSIpumps.GotoECA-3',SGTRWITHLOSSOFREACTORCOOLANT-SUBCOOLEDRECOVERYDESIRED,Step1.b.IFneitherconditionsatisfied,THENdoNOTstopSIpumps.GotoECA-3.1,SGTRWITHLOSSOFREACTORCOOLANT-SUBCOOLEDRECOVERYDESIRED,Step1.oNarrowrangelevelinintactS/G-GREATERTHAN5%[25%adverseCNMT]c.RVLISindicationoLevel(noRCPs)-GREATERTHAN68%[73%adverseCNMT]-OR-c.DoNOTstopSIpumps.GotoECA-3.1,SGTRWITHLOSSOFREACTORCOOLANT-SUBCOOLEDRECOVERYDESIRED,Stepl.oFluidfraction(anyRCPrunning)-GREATERTHAN80%d.AnyrupturedS/Gnarrowrangelevel-INCREASINGINANUNCONTROLLEDMANNEROROFFSCALEHIGHd.DoNOTstopSIpumps.ReturntoStep2.
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~'EOP:ECA-3.31T1TLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE8of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED9StopSIPumpsandPlaceInAUTO
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EOP:ECA-3.3T!TLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV12PAGE9of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED10CheckIfChargingFlowHasBeenEstablished:a.Chargingpumps-ANYRUNNINGb.ChargingpumpsuctionalignedtoRWST:oLCV-112B-OPENoLCV-112C-CLOSEDc.Startchargingpumpsasnecessaryandadjustchargingflowtoperformthefollowing:oRestorePRZRleveloMaintainRCSsubcoolingbasedoncoreexitT/Cs-GREATERTHANO'FUSINGFIGUREMINSUBCOOLINGa.Performthefollowing:1)IFCCWflowislosttoanyRCPthermalbarrierORanyRCP¹1sealoutlettemperatureoffscalehigh,THENdispatchAOwithkeytoRWSTgatetoclosesealinjectionneedlevalve(s)toaffectedRCP:~RCPA,V-300A~RCPB,V-300B2)EnsureHCV-142open,demandat0%.b.Manuallyalignvalvesasnecessary.IFLCV-112BcanNOTbeopened,THENperformthefollowing:1)VerifychargingpumpANOTrunningandplaceinPULLSTOP.2)DispatchAOtolocallyopenmanualchargingpumpsuctionfromRWST(V-358locatedinchargingpumproom).3)WHENV-358open,THENdirectAOtocloseV-268toisolatechargingpumpsBandCfromVCT(V-268locatedinchargingpumproom).
~I'4.I',4*4ge'I ECA-3.3TITLESGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE10of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*11MonitorRCSInventory:oRCSsubcoolingbasedoncoreexitT/Cs-GREATERTHANO'USINGFIGUREMINSUBCOOLINGoRVLISindicationoLevel(noRCPs)-GREATERTHAN68%[73%adv'erseCNMT]-OR-Performthefollowing:a.ManuallyoperateSIpumpsasnecessary.b.GotoECA-3.1,SGTRWITHLOSSOFREACTORCOOLANT-SUBCOOLEDRECOVERYDESIRED,Step1.oFluidfraction(anyRCPrunning)-GREATERTHAN80%12VerifyAdequateSWFlowToCCWHx:a.VerifyatleasttwoSWpumpsRUNNINGb.VerifyAUXBLDGSWisolationvalves-OPENa.Manuallystartpumpsaspowersupplypermits(258kwperpump).IFlessthantwoSWpumpscanbeoperated,THENgotoStep20.b.EstablishSWtoAUXBLDG(RefertoAttachmentAUXBLDGSW).~MOV-4615andMOV-4734~MOV-4616andMOV-4735c.VerifyCNMTRECIRCfanannunciatorC-2,HIGHTEMPERATUREALARM-EXTINGUISHEDc.DispatchAOtolocallythrottleflowtoCCWHxtobetween5000gpmand6000gpmtotalflow.
~k44t[~,gag EOP:ECA-3.31'ITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE11of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED13CheckIfNormalCVCSOperationCanBeEstablisheda.VerifyIArestored:oIAtoCNMT(AOV-5392)-OPENa.ContinuewithStep17.WHENIArestored,THENdoSteps13through16.oIApressure-GREATERTHAN60PSIGb.VerifyinstrumentbusD-ENERGIZEDc.CCWpumps-ANYRUNNINGb.EnergizeMCCB.IFMCCBNOTavailable,THENperformthefollowing:1)VerifyMCCAenergized.2)PlaceinstrumentbusDonmaintenancesupply.c.Performthefollowing:1)IFanyRCP81sealoutlettemperatureoffscalehigh,THENisolateCCWtothermalbarrierofaffectedRCP(s).~RCPA,MOV-749AandMOV-759A~RCPB,MOV-749BandMOV-759Bd.Chargingpump-ANYRUNNING2)ManuallystartoneCCWpump.d.ContinuewithStep20.WHENanychargingpumprunning,THENdoSteps14through17.
pl'14l)\544,t EOP:ECA-3.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE12of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINEDNOTE:IfPRZRlevelislessthan13%,letdownmaybeestablishedbyplacingAOV-427toOPEN.14EstablishNormalLetdown:a.EstablishcharginglineflowtoREGENHx-GREATERTHAN20GPMb.PlacethefollowingswitchestoCLOSE:~Letdownorificevalves(AOV-200A,AOV-200B,andAOV-202)~AOV-371,letdownisolationvalve~AOV-427,loopBcoldlegtoREGENHxc.PlaceletdowncontrollersinMANUALat40%open~TCV-130~PCV-135d.ResetbothtrainsofXYrelaysforAOV-371andAOV-427e.OpenAOV-371andAOV-427f.Openletdownorificevalvesasnecessaryg.PlaceTCV-130inAUTOat105'Fh.PlacePCV-135inAUTOat250psigi.AdjustchargingpumpspeedandHCV-142asnecessaryIFRCPsealreturnhasbeenestablished,THENestablishexcessletdownasfollows:oPlaceexcessletdowndivertvalve,AOV-312,toNORMAL.oEnsureCCWfromexcessletdownopen,(AOV-745).oOpenexcessletdownisolationvalveAOV-310.oSlowlyopenHCV-123tomaintainexcessletdowntemperaturelessthan195'Fandpressurelessthan100psig.oAdjustchargingpumpspeedasnecessary.IFRCPsealreturnNOTestablished,THENconsultTSCtodetermineifexcessletdownshouldbeplacedinservice.
g'sr,lIEF EOP:ECA-3.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE13of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED15CheckVCTMakeupSystem:a.AdjustboricacidflowcontrolvalveinAUTOto9.5gpmb.Verifythefollowing:1)RMWmodeselectorswitchinAUTOb.Adjustcontrolsasnecessary.2)RMWcontrolarmed-REDLIGHTLITc.CheckVCTlevel:oLevel-GREATERTHAN20%-OR-oLevel-STABLEORINCREASINGc.ManuallyincreaseVCTmakeupflowasfollows:1)EnsureBAtransferpumpsandRMWpumpsrunning.IFNOT,THENresetMCCCandMCCDUVlockoutsasnecessary.2)PlaceRMWflowcontrolvalveHCV-111inMANUAL.3)IncreaseRMWflow.'
p%AtdQI'~-1k.ip EOP:ECA-3.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV12PAGE14of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED16CheckChargingPumpSuctionAlignedToVCT:a.VCTlevel-GREATERTHAN20%a.IFVCTlevelcanNOTbemaintainedgreaterthan5%,THENperformthefollowing:1)EnsurechargingpumpsuctionalignedtoRWSToLCV-112BopenoLCV-112Cclosed.b.VerifychargingpumpsalignedtoVCToLCV-112C-OPENoLCV-112B-CLOSED2)ContinuewithStep17.WHENVCTlevelgreaterthan40%,THENdoStep16b.b.Manuallyalignvalvesasnecessary.
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4~EOP:ECA-3.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE15of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED17CheckRCPCooling:a.CheckCCWtoRCPs:EstablishnormalcoolingtoRCPs(RefertoAttachmentSEALCOOLING).oAnnunciatorA-7,RCP1ACCWRETURNHIGHTEMPORLOWFLOWEXTINGUISHEDioAnnunciatorA-15,RCP1BCCWRETURNHIGHTEMPORLOWFLOWEXTINGUISHEDb.CheckRCPsealinjection:oLabyrinthsealD/Ps-GREATERTHAN15INCHESOFWATER-OR-oRCPsealinjectionflowtoeachRCP-GREATERTHAN6GPM rp1>~JI
~~EOP:ECA-P.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE16of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED18CheckIfSealReturnFlowShouldBeEstablished:a.VerifyRCP¹1sealoutlettemperature-LESSTHAN235'Fb.VerifyRCPsealoutletvalvesOPEN~AOV-270A~AOV-270Ba.GotoStep19.b.Manuallyopenvalvesasnecessary.c.ResetbothtrainsofXYrelaysforRCPsealreturnisolationvalveMOV-313d.OpenRCPsealreturnisolationvalveMOV-313d.Performthefollowing:1)PlaceMOV-313switchtoOPEN.e.VerifyRCP¹1sealleakoffflowLESSTHAN5.5GPM2)DispatchAOwithkeytoRWSTgatetolocallyopenMOV-313.e.Performthefollowing:1)TriptheaffectedRCP2)Allow3minutesforpumpcoastdown,THENclosetheaffectedRCPsealdischargevalve.RCPA,AOV-270A~RCPB,AOV-270BIFbothRCPsealdischargevalvesareshut,THENgotoStep19.f.VerifyRCP¹1sealleakoffflowGREATERTHAN0.8GPMf.RefertoAP-RCP.1,RCPSEALMALFUNCTION.
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~s~~~EOP:ECA-0.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE17of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED19EqualizeChargingAndLetdownFlows:a.Verifychargingpumpcontrollersinmanualb.Controlchargingandsealinjectionflowstoequalletdownandsealleakoffflows20CheckIfEmergencyD/GsShouldBeStopped:a.VerifyACemergencybussesenergizedbyoffsitepower:oEmergencyD/GoutputbreakersOPENa.Trytorestoreoffsitepower(RefertoER-ELEC.1,RESTORATIONOFOFFSITEPOWER).oACemergencybusvoltage-GREATERTHAN420VOLTSoACemergencybusnormalfeedbreakers-CLOSEDb.StopanyunloadedemergencyD/Gandplaceinstandby(RefertoAttachmentD/GSTOP)21MinimizeSecondarySyst:emContamination:a.IsolaterejectfromhotwelltoCST'Placehotwelllevelcontroller(HC-107)inMANUALat50%a.IFhotwelllevelincreasing,THENdirectRPtosamplehotwellsforactivity.KoVerifyhotwelllevel-STABLEb.VerifylocalactionstocompleteisolationofrupturedS/G(RefertoAttachmentRUPTUREDS/G)
~~Ce90l1 EOP:ECA-3.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE18of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINEDNOTE:AdverseCNMTconditionsorlossofforcedaircoolingmayresultinfailureofNISdetectors.22CheckIfSourceRangeDetectorsShouldBeEnergized:a.SourcerangechannelsDEENERGIZEDa.GotoStep22e.b.Checkintermediaterangeflux-EITHERCHANNELLESSTHAN1010AMPSb.Performthefollowing:1)IFneitherintermediaterangechannelisdecreasing,THENinitiateboration.2)ContinuewithStep23.WHENfluxisLESSTHAN10-10~psonanyoperablechannel,THENdoSteps22cthroughe.c..Checkthefollowing:oBothintermediaterangechannels-LESSTHAN1010AMPSc.ContinuewithStep23.WHENeitherconditionmet,THENdoSteps22dande.-OR-oGreaterthan20minutessincereactortripd.VerifysourcerangedetectorsENERGIZEDd.ManuallyenergizesourcerangedetectorsbydepressingP-6permissivedefeatpushbuttons(2of2).e.TransferRk-45recordertoonesourcerangeandoneintermediaterangechannelIFsourcerangescanNOTberestored,THENrefertoER-NIS.1,SRMALFUNCTIONandgotoStep22.
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EOP:EGA-3.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE19of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED23EstablishNormalShutdownAlignment:a.Checkcondenser-AVAILABLEa.DispatchAOtoperformAttachmentSD-2.b.Performthefollowing:oOpengeneratordisconnects~1G13A71~9X13A73oPlacevoltageregulatortoOFFoOpenturbinedrainvalvesoRotatereheatersteamsupplycontrollercerntoclosevalves'PlacereheaterdumpvalveswitchestoHANDoStopallbutonecondensatepumpc.VerifyadequateRxheadcooling:1)CheckIAtoCNMT-AVAILABLE1)GotoStep24.2)Verifyatleastonecontrolrodshroudfan-RUNNING3)VerifyoneRxcompartmentcoolingfan-RUNNING2)Manuallystartonefanaspowersupplypermits(45kw)3)Performthefollowing:oDispatchAOtoresetUVrelaysatMCCCandMCCD.oManuallystartonefanaspowersupplypermits(23kw)d.VerifyAttachmentSD-1-COMPLETE
)w'o~rIT EOP:ECA-3.3IT!TLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV12PAGE20of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINEDNOTE:PlantstaffshoulddecidewhethertorepairPRZRpressurecontrolsystemsorcontinuewiththisprocedure.IfPRZRpressurecontrolisestablished,PRZRlevelshouldberestoredtogreaterthan5%[30%adverseCNMT]andthenfurtherrecoveryshouldcontinuewithE-3,STEAMGENERATORTUBERUPTURE,Step37.24CheckIfSIACCUMsShouldBeIsolated:a.Checkthefollowing:oRCSsubcoolingbasedoncoreexitT/Cs-GREATERTHANO'USINGFIGUREMINSUBCOOLINGa.ReturntoStep11.oRVLISindication-GREATERTHAN68%[73%adverseCNMT]b.DispatchAOwithlockedvalvekeytolocallyclosebreakersforSIACCUMdischargevalves~MOV-841,MCCCposition12F~MOV-865,MCCDposition12Cc.CloseSIACCUMdischargevalves~MOV-841~MOV-865c.VentanyunisolatedACCUMs:1)OpenventvalvesforunisolatedSIACCUMs.~ACCUMA,AOV-834A~ACCUMB,AOV-834Bd.LocallyreopenbreakersforMOV-841andMOV-8652)OpenHCV-945.
IgCSItIfti!p EOP:ECA-3.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE21of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINEDNOTE:LeakagefromrupturedS/GintoRCSwilldiluteRCSboronconcentration.25VerifyAdequateShutdownMargina.DirectRPtosampleRCSandrupturedS/Gforboronconcentrationb.Verifyboronconcentration-GREATERTHANREQUIREMENTSOFFIGURESDMb.Borateasnecessary.26MaintainRequiredRCPSealInjectionFlowAndLabyrinthSealD/P:oLabyrinthsealD/PtoeachRCP-GREATERTHAN15INCHES,OFWATERoRCPsealinjectionflow-GREATERTHAN6GPMPerformthefollowing:oAdjustchargingflowtoREGENHx,HCV-142asnecessary.-OR-oDispatchAOtoadjustsealinjectionneedlevalvesV-300AandV-300Bifnecessary.27InitiateRCSCooldownto350'FInRCSColdLegs:a.EstablishandmaintaincooldownrateinRCScoldlegs-LESSTHAN100'F/HRb.DumpsteamtocondenserfromintactS/Gb.ManuallyorlocallydumpsteamusingintactS/GARV.IFnointactS/Gavailable,THENusefaultedS/G.
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EOP:EGA-).3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE22of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONRCSANDRUPTUREDS/GPRESSURESMUSTBEMAINTAINEDLESSTHANTHERUPTUREDS/GARVSETPOINT.28ControlChargingFlowToMaintainRCSSubcooling:a.RCSsubcoolingbasedoncoreexitT/Cs-GREATERTHAN20'FUSINGFIGUREMINSUBCOOLINGb.RupturedS/GnarrowrangelevelLESSTHAN90%[85%adverseCNMT]c.RupturedS/GnarrowrangelevelSTABLEORDECREASINGa.Increasechargingflowtomaintainsubcoolinggreaterthan20'FusingFigureMINSUBCOOLINGandgotoStep29.b.ControlchargingflowtomaintainRCSpressureatrupturedS/GpressureandgotoStep29.c.IFrupturedS/Glevelincreasing,THENdecreasechargingflowtostabilizelevel.MaintainRCSsubcoolinggreaterthan20'FusingFigureMINSUBCOOLING.29CheckIfRCSCooldownShouldBeStopped:a.RCScoldlegtemperatures-LESSTHAN350'Fa.ReturntoStep25.b.StopRCScooldown tgl'IA+
EOP:ECA-3.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE23of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED30CheckRCSPressure-GREATERTHAN400PSIG[300PSIGadverseCNMT]GotoStep33'31MonitorRupturedS/GNarrowRangeLevel-GREATERTHAN17%r25%adverseCNMT]RefillrupturedS/Gto67%[55%adverseCNMT]usingfeedflow.IFeitherofthefollowingconditionsoccurs,THENstopfeedflowtorupturedS/G:oRupturedS/Gpressuredecreasesinanuncontrolledmanner.-OR-oRupturedS/Gpressureincreasesto1020psig.e
~I EOP:ECA-3.3TITLESGTRWITHOUTPRESSURIZERPRESSURECONTROLREV12PAGE24of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONoSTEAMSHOULDNOTBERELEASEDFROMARUPTUREDS/GIFWATERMAYEXISTINITSSTEAMLINE.oRUPTUREDS/GPRESSUREMAYDECREASERAPIDLYWHENSTEAMISRELEASED.NOTE:TheupperheadregionmayvoidduringRCSdepressurizationifRCPsarenotrunning.ThismayresultinarapidlyincreasingPRZRlevel.32DepressurizeRCSAndRupturedS/GTo400PSIGt'300PSIGadverseCNMT]a.Performthefollowing:oDecreasechargingandincreaseletdowntoinitiatebackfill-OR-oInitiateblowdownfromrupturedS/G-OR-oDumpsteamfromrupturedS/Gb.CheckRCSpressure-LESSTHAN400psig[300psigadverseCNMT]c.StopRCSdepressurizationb.ReturTLtoStep31.
1I'p'bl"g'"I>as0 EOP:ECA-3.3ITITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE25of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED33CheckIfRHRNormalCoolingCanBeEstablished:a.RCScoldlegtemperature-LESSTHAN350'Fa.ReturntoStep27.b.RCSpressure-LESSTHAN400psig[300psigadverseCNMT]c.PlaceRCSoverpressureprotectionsysteminservice(Referto0-7,ALIGNMENTANDOPERATIONOFTHEREACTORVESSELOVERPRESSUREPROTECTIONSYSTEM)d.EstablishRHRnormalcooling(RefertoAttachmentRHRCOOL)b.ReturntoStep31.c.IFRCSoverpressureprotectionsystemcanNOTbeplacedinservice,THENnotifyTSCofpotentialTechSpecviolationifRHRsystemisplacedinservice.NOTE:LeakagefromrupturedS/GintoRCSwilldiluteRCSboronconcentration.34VerifyAdequateShutdownMargina.DirectRPtosampleRCSandrupturedS/Gforboronconcentrationb.Verifyboronconcentration-GREATERTHANREQUIREMENTSOFFIGURESDMb.Borateasnecessary.
14I7' EOP:ECA-3.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE26of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED35InitiateRCSCooldownToColdShutdown:a.EstablishandmaintaincooldownrateinRCScoldlegs-LESSTHAN100'F/HRb.UseRHRsystemifinservicec.DumpsteamtocondenserfromintactS/Gc.ManuallyorlocallydumpsteamfromintactS/GusingARVs.IFnointactS/GavailableandRHRsystemNOTinservice,THENusefaultedS/G.36ControlChargingFlowToMaintainRCSSubcooling:a.RCSsubcoolingbasedoncoreexitT/Cs-GREATERTHAN20'FUSINGFIGUREMINSUBCOOLINGb.RupturedS/GnarrowrangelevelLESSTHAN90%[85%adverseCNMT)c.RupturedS/GnarrowrangelevelSTABLEORDECREASINGa.Increasechargingflowtomaintainsubcoolinggreaterthan20'FusingFigureMINSUBCOOLINGandgotoStep37.b.ControlchargingflowtomaintainRCSpressureatrupturedS/GpressureandgotoStep37.c.IFrupturedS/Glevelincreasing,THENdecreasechargingflowtostabilizelevel.MaintainRCSsubcoolinggreaterthan20'FusingFigureMINSUBCOOLING~
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EOP:ECA-,3.3IT1TLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE27of27STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*37MonitorRCPOperation:a.RCPs-ANYRUNNINGb.Checkthefollowing:oRCP¹1sealD/P-GREATERTHAN220PSIDa.GotoStep39.b.StoptheaffectedRCP(s).oCheckRCPsealleakageWITHINTHENORMALOPERATINGRANGEOFFIGURERCPSEALLEAKOFF38CheckCoreExitT/Cs-LESSTHAN200'FReturntoStep34.39EvaluateLongTermPlantStatus:a.Maintaincoldshutdownconditionsb.ConsultTSC-END-
EOP:ECA-3.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE1of1ECA-3.3APPENDIXLISTTITLEPAGES1)REDPATHSUMMARY2)FIGUREMINSUBCOOLING3)FIGURESDM4)FIGURERCPSEALLEAKOFF5)ATTACHMENTRCPSTART6)ATTACHMENTN2PORVS7)ATTACHMENTRUPTUREDS/G8)ATTACHMENTD/GSTOP9)ATTACHMENTSD-110)ATTACHMENTSEALCOOLING11)ATTACHMENTSD-212)ATTACHMENTRHRCOOL13)ATTACHMENTAUXBLDGSW14)FOLDOUT Jf EOP:,ECA-~.3TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV12PAGE1of1REDPATHSUMMARYa.SUBCRITICALITY-Nuclearpowergreaterthan5tb.CORECOOLING-CoreexitT/Csgreaterthan1200'F-OR-CoreexitT/Csgreaterthan700'FANDRVLISlevel(noRCPs)lessthan434[464adverseCNMT]c.HEATSINK-NarrowrangelevelinallS/Gslessthan54[254adverseCNMT]ANDtotalfeedwaterflowlessthan200gpmd.INTEGRITY-Coldlegtemperaturesdecreasegreaterthan100Finlast60minutesANDRCScoldlegtemperaturelessthan285'Fe.CONTAINMENT-CNMTpressuregreaterthan60psig 0~fr>,(JlOhpl/
EOP:ECA-3.3~z~~TITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE1of1FIGUREMINSUBCOOLINGNOTE:SubcoolingMargin=SaturationTemperatureFromFigureBelow[-]CoreExitT/CIndicationRC250024002300220021002000190018001700160015001300120011001000900800700'005004003002001000SPRESSURE(PSIG)RCSPRESSUREINCREMENTS20PSIGSUBCOOLEDREGIONADVERSECNMTNORMALCNMTINADEQUATESUBCOOLINGREGIONTEMPERATUREINCREMENTS10'F200250300350400450500550600650700COREEXITSATURATIONTEMPERATURE('F)
~~qsl.'V4 EOP:EGA,-3~3TITLESGTRWITHOUTPRESSURIZERPRESSURECONTROLREV12PAGE1of1FIGURESDMNOTE:oCurveincludesallowanceforonestuckrod.Add100ppmforeachadditionalstuckrod.oToobtaincoreburnup,usePPCSpointIDBURNUP.BORONCONCENTRATION(PPM)18001600BORONINCREMENTS20PPH140012001000ADEQUATESDH100PPHCONSERVATISHINCLUDED800600400200BURNUPINCREMENTS100MWD/MTU0100020003000400050006000700080009000100001100012000CYCLE25BURNUP(MWD/MTU)
I'i~0~'tCa~'l(Af~<4(j EOP:ECA-3.3~rTITLE:SGTRWITHOUTPRESSURIZERPRESSURECONTROLREV:12PAGE1of1FIGURERCPSEALLEAKOFF¹1SEALLEAKRATE(GPH)6LEAKRATEINCREHENTS0.2GPHNORHALOPERATINGRANGEDPINCREHENTS50PSI2505007501000125015001750200022502500¹1SEALDP(RCSPRESS-VCTPRESS)PSI
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