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{{#Wiki_filter:%OP:FR-P.1TITLE: | {{#Wiki_filter:%OP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE1of21ROCHESTER GASANDELECTRICCORPORATION GINNASTATIONCONTROLLED COPYNUMBERRESPONSIMANAGEREFFECTIVE DATECATEGORY1.0REVIEWEDBY:97Oaaeos7e 9roeoifPDRAOOCK05005244)FPDR eEOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE2of21A.PURPOSE-Thisprocedure providesactionstoavoid,orlimit,thermalshockorpressurized thermalshocktothereactorpressurevessel,oroverpressure conditions atlowtemperature. | ||
EOP:FR-P.1TITt.E: | B.ENTRYCONDITIONS/SYMPTOMS 1.ENTRYCONDITIONS | ||
EOP:FR-P.1TITLE: | -Thisprocedure isenteredfrom:a.F-0.4,INTEGRITY CriticalSafetyFunctionStatusTree,oneitheraREDorORANGEcondition. | ||
EOP:FR-P.1TITt.E:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE3of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:AdverseCNMTvaluesshouldbeusedwheneverCNMT~ressureisgreaterthan4psigorCNMTradiation isgreaterthan10+R/hr.1CheckRCSPressure-GREATERTHAN250PSIGt'465PSIGadverseCNMT]IFRHRflowgreaterthan475gpm,THENreturntoprocedure andstepineffect. | |||
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV15PAGE4.of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:AfaultedS/GisanyS/Gthatisdepressurizing inanuncontrolled manneroriscompletely depressurized. | |||
2CheckRCSColCLegTemperatures | |||
-STABLEORINCREASING TrytostopRCScooldown: | |||
I'.EnsureS/GARVsclosed.b.ClosebothS/GMSIVs.c.EnsureMFWflowcontrolvalvesclosed.~MFWregulating valves~MFWbypassvalvesd.EnsureMFWpumpstripped.e.Rotatereheatersteamsupplycontroller camtoclosereheatersteamsupplyvalves.f.IFS/Gpressurelessthancondensate | |||
: pressure, THENstopallcondensate pumps.g.IFRHRsysteminservice,THENstopanycooldownfromRHRsystem.h.Controltotalfeedflowtonon-faulted S/G(s)greaterthan200gpmuntilnarrowrangelevelgreaterthan5%[258adverseCNMT]inatleastonenon-faulted S/G.WHENS/Glevelgreaterthan5%[25%adverseCNMT]inonenon-faulted S/G,THENlimitfeedflowtostopRCScooldown. | |||
ThisStepcontinued onthenextpage. | |||
cOP:FR-P.1T1TLE: | cOP:FR-P.1T1TLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE5of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED(Step2continued frompreviouspage)"i.MinimizecooldownfromfaultedS/G(s):1)ClosefaultedS/G(s)TDAFWpumpsteamsupplyvalve(s). | ||
~S/GA,MOV-3505A | |||
~S/GB,MOV-3504A 2)IFbothS/G(s)faulted,THENcontrolfeedflowat50gpmtoeachS/G.3)IFanyS/GNOTfaulted,THEN'isolateallfeedwater tofaultedS/Gunlessnecessary forRCStemperature | |||
.control. | |||
IFafaultedS/Gisnecessary forRCStemperature control,THENcontrolfeedflowat50gpmtothatS/G.3CheckPRZRPORVBlockValves:a.PowertoPORVblockvalvesAVAILABLE b.Blockvalves'-ATLEASTONEOPENa.RestorepowertoblockvalvesunlessblockvalvewasclosedtoisolateanopenPORV:~MOV-515,MCCDposition6C~MOV-516,MCCCposition6Cb.OpenonebiockvalveunlessitwasclosedtoisolateanopenPORV.IFatleastoneblockvalvecanNOTbeopened,THENdispatchAOtolocallycheckbreaker.~MOV-515,MCCDposition6C~MOV-516,MCCCposition6C | |||
EOP:FR-P.1TITLE: | EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV15PAGE6of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDCAUTIONIFANYPRZRPORVOPENSBECAUSEOFHIGHPRZRPRESSURE, THENSTEP4SHOULDBEPERFORMED AFTERPRESSUREDECREASES TOLESSTHANTHEAPPLICABLE PORVSETPOINT. | ||
4CheckPRZRPORVStatus:a.CheckReactorVesselOverpressure Protection System-INSERVICEa.GotoStep4d.b.CheckRCSpressure-LESSTHAN410PSIGb.Performthefollowing: | |||
1)EnsureatleastonePRZRPORVopen.2)ContinuewithStep5.WHENpressurelessthansetpoint, THENdoStep4e~c.GotoStep4ed.PRZRpressure-LESSTHAN2335PSIGe'VerifyPRZRPORVs-CLOSEDd.Performthefollowing: | |||
1)EnsureatleastonePRZRPORVopen.2)ContinuewithStep5.WHENpressurelessthansetpoint, THENdoStep4e.e.Manuallyclosevalve.IFanyvalvecanNOTbeclosed,THENmanuallycloseitsblockvalve. | |||
EOP:FR-P.1TITLE: | EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE7of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED5CheckSZPumps-ANYRUNNINGGotoStep13.6CheckZfSZCanBeTerminated: | ||
~e0 EOP:FR-P.1TITLE: | oRCSsubcooling basedoncoreexitT/Cs-GREATERTHAN50'FUSINGFIGUREMINSUBCOOLING oCheckRVLISindication: | ||
EOP:FR-P.1TITLE: | oLevel(noRCPs)-GREATERTHAN68%[73%adverseCNMT)-OR-oFluidfraction(anyRCPrunning)-GREATERTHAN80%DoNOTstopSIpumps.Performthefollowing: | ||
EOP:FR-P.1TITLE: | a.IFRCSsubcooling basedoncoreexitT/CsgreaterthanO'Fusing'igureMINSUBCOOLING andnoRCPrunning,THENattempttostartanRCP:1)Establish conditions forstartinganRCP:oBusllAor11B.energized oRefertoAttachment RCPSTART2)IFconditions established, THENstartoneRCP.b.GotoStep26".CAUTIONIFOFFSITEPOWERISLOSTAFTERSIRESET,THENSELECTEDSWPUMPSANDONECCWPUMPWILLAUTOSTARTONEMERGENCY D/G.MANUALACTIONWILLBEREQUIREDTORESTARTSAFEGUARDS EQUIPMENT. | ||
EOP:FR-P.1TITLE: | 7ResetSZ FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV15PAGE8of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED8StopSIAndRHRPumpsAnd,PlaceInAUTO9ResetCI:a.DepressCIresetpushbutton b.Verifyannunciator A-26,CNMTISOLATION | ||
EOP:FR-P.1TITLE: | -EXTINGUISHED b.Performthefollowing: | ||
1)ResetSI.h2)DepressCIresetpushbutton. | |||
10VerifyAdequateSWFlow:a.CheckatleasttwoSWpumpsRUNNINGb.DispatchAOtoestablish normalshutdownalignment (RefertoAttachment SD-1)a.ManuallystartSW-pumpsaspowersupplypermits(258kweach).IFlessthantwoSWpumpsrunning,THENperformthe,following: | |||
1)EnsureSWisolation. | |||
2)DispatchAOtoestablish normalshutdownalignment (RefertoAttachment SD-1).3)GotoStep12.WHENadequateSWavailable, THENdoStep11. | |||
~e0 EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE9of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED11Estahli.sh IAtoCNMT:a.Verifynon-safeguards bussesenergized fromoffsitepoweroBus13normalfeed-CLOSED-OR-oBus15normalfeed-,CLOSEDb.VerifySWisolation valvestoturbinebuilding-OPEN~MOV-4613andMOV-4670~MOV-4614andMOV-4664c.Verifyatleasttwoaircompressors | |||
-RUNNINGd.CheckIAsupply:oPressure-GREATERTHAN60PSIGoPressure--STABLEORINCREASING e.ResetbothtrainsofXYrelaysforIAtoCNMTAOV-5392f.VerifyIAtoCNMTAOV-5392-OPENa.Performthefollowing: | |||
1)Closenon-safeguards bustiebreakers: | |||
~Bus13toBus14tie~Bus15toBus16tie2)Verifyadequateemergency D/Gcapacitytorunaircompressors (75kweach).IFNOT,THENevaluateifCNMTRECIRCfansshouldbestopped(RefertoAttachment CNMTRECIRCFANS).3)WHENbus15restored, THENresetcontrolroomlighting. | |||
b.Manuallyalignvalves.c.Manuallystartaircompressors aspowersupplypermits(75kweach).IFaircompressors canNOTbestarted,THENdispatchAOtolocallyresetcompressors asnecessary. | |||
d.Performthefollowing: | |||
1)ContinueattemptstorestoreIA(RefertoAP-IA.l,LOSSOFINSTRUMENT AIR).2)ContinuewithStep12.WHENIArestored, THENdoStepslieandf. | |||
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE10of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED12CheckIfChargingFlowHasBeenEstablished: | |||
a.Chargingpumps-ANYRUNNINGa.Performthefollowing: | |||
1)IFCCWflowislosttoanyRCPthermalbarrierORanyRCP¹1sealoutlettemperature offscalehigh,THENdispatchAOwithkeytoRWSTgatetolocallyclosesealinjection needlevalve(s)toaffectedRCP:~RCPA,V-300A'RCPB,V-300B2)EnsureHCV-142open,demandatOa.b.AlignchargingpumpsuctiontoRWST:oLCV-112B-OPENoLCV-112C-CLOSEDb.IFLCV-112BcanNOTbeopened,THENperformthefollowing: | |||
1)VerifychargingpumpANOTrunningandplaceinPULLSTOP.c.Startchargingpumpsasnecessary toestablish charginglineflowtoREGENHX-GREATERTHAN20GPM2)DispatchAOtolocallyopenmanualchargingpumpsuctionfrom.RWST(V-358locatedinchargingpumproom).3)WHENV-358open,THENdirectAOtocloseV-268toisolatechargingpumpsBandCfromVCT(V-268locatedinchargingpumproom). | |||
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE11of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED*13MonitorSIReinitiation Criteria: | |||
o-RCSsubcooling basedoncoreexitT/Cs-GREATERTHANFIGUREMINSUBCOOLING oRVLISindication: | |||
ManuallyoperateSIpumpsasnecessary andperformthefollowing | |||
'.IFRCSsubcooling basedoncoreexitT/CsgreaterthanFigureMINSUBCOOLING andnoRCPrunning,THENattempttostartaRCP:oLevel-GREATERTHAN68%[73%adverseCNMT]-OR-oFluidfraction(anyRCPrunning)-GREATERTHAN80%1)Establish conditions forstartinganRCP:oBus11Aor11Benergized oRefertoAttachment RCPSTART2)IFconditions established, THENstartoneRCP.b.GotoStep26.14CheckRCSHotLegTemperatures | |||
-STABLEIFincreasing, THENcontrolfeedflowanddumpsteamtostabilize RCShotlegtemperatures., | |||
IFdecreasing, THENverifythatactionsofStep2havebeenperformed beforecontinuing withprocedure. | |||
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE12of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED15CheckIfSIACCUMsShouldBeIsolated: | |||
a.Checkthefollowing: | |||
oRCSsubcooling basedoncoreexitT/Cs-GREATERTHANO'USINGFIGUREMINSUBCOOLING a.ReturntoStep13.oRVLISindication: | |||
oLevel-GREATERTHAN68%[73%adverseCNMT]-OR-oFluidfraction(anyRCPrunning)-GREATERTHAN80%b.DispatchAOwithlockedvalvekeytolocallyclosebreakersforSIACCUMdischarge valves~MOV-841,MCCCposition12F~MOV-865,MCCDposition12Cc.CloseSIACCUHdischarge valves~MOV-841~MOV-865c.Ventanyunisolated ACCUMs':1)Openventvalvesforunisolated SIACCUMs.d.LocallyreopenbreakersforMOV-841andMOV-865~ACCUMA,AOV-834A~ACCUMB,AOV-834B2)OpenHCV-945.3)'Continue withStep16.DoNOTdecreaseRCSpressuretolessthanunisolated ACCUMpressure. | |||
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE13of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDCAUTIONTHERCSSHOULDNOTBEDEPRESSURIZED TOLESSTHANSIACCUMPRESSUREUNTILSIACCUMSISOLATED. | |||
NOTE:oIfauxiliary sprayisinuse,sprayflowmaybeincreased byclosingnormalchargingvalveAOV-294andnormalPRZRsprayvalves.oWhenusingaPRZRPORVselectonewithanoperableblockvalve.16Depressurize RCSToDecreaseRCSSubcooling: | |||
a.Depressurize usingnormalPRZRsprayifavailable a.IFnormalsprayNOTavailable, THENuseonePRZRPORV.IFIANOTavailable, THENrefertoAttachment N2PORVS.b.Depressurize RCSuntiloneofthefollowing conditions satisfied: | |||
IFnoPRZRPORVavailable, THENuseauxiliary sprayvalve(AOV-296). | |||
oRCSsubcooling basedoncoreexitT/Cs-LESSTHAN10'FUSINGFIGUREMINSUBCOOLING | |||
-OR-oPRZRlevel-GREATERTHAN87$[75%adverseCNMT]-OR-oRCSpressure-LESSTHAN160psig[200psigadverseCNMT]c.StopRCSdepressurization tOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE14of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED*17MonitorRCPOperation: | |||
a.RCPs-ANYRUNNINGb..Checkthefollowing: | |||
oRCP¹1sealD/P-GREATERTHAN220PSIDa.GotoStep18.b.StopaffectedRCP(s).oRCP¹1sealleakoff-WITHINTHENORMALOPERATING RANGEOFFIGURERCPSEALLEAKOFFCAUTIONANINCREASEINRCSPRESSUREMAYRESULTINEXCESSIVE REACTORVESSELSTRESS.RCSPRESSUREANDTEMPERATURE SHOULDBEMAINTAINED STABLEWHILEPERFORMING SUBSEQUENT STEPSINTHISPROCEDURE. | |||
18CheckPRZRLevel-GREATERTHAN134[404adverseCNMT]Trytorestorelevelwithchargingwhilemaintaining stableRCSpressure. | |||
IFlevelcanNOTberestored, THENgotoStep25. | |||
EOP:FR-P.1TITLE: | EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV'5PAGE15of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED19CheckIfNormalCVCS,Operation CanBeEstablished a.VerifyIArestored: | ||
Il FR-P.1TITLE: | oIAtoCNMT(AOV-5392) | ||
EOP:FR-P.1TITLE: | -OPENoIApressure-GREATERTHAN60PSIGa.ContinuewithStep23.WHENIArestored, THENdo,Steps19through22.b.CCWpumps-ANYRUNNINGb.Performthefollowing: | ||
c.Verifyinstrument busD-ENERGIZED d.Chargingpump-ANYRUNNING1)IFanyRCP¹1sealoutlettemperature offscalehigh,THENisolateCCWtothermalbarrierofaffectedRCP(s).~RCPA,MOV-749AandMOV-759A~RCPB,MOV-749BandMOV-759B2)ManuallystartoneCCWpump.c.EnergizeMCCB.IFMCCBNOTavailable, THENperformthefollowing: | |||
1)VerifyMCCAenergized. | |||
2)Placeinstrument busDonmaintenance supply.d.ContinuewithStep24.WHENanychargingpumprunning,THENdoSteps20through24. | |||
Il FR-P.1TITLE:RESPONSETOZMMZNENTPRESSURZZED THERMALSHOCKCONDZTZON REV:15PAGE16of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDCAUTIONIFRCSPRESSURELESSTHAN250PSIG,THENPCV-135SHOULDBEADJUSTEDTOESTABLISH DESIREDLETDOWNFLOW,NOTTOINCREASEPRESSURE. | |||
20Establish NormalLetdown:a.Establish charginglineflowtoREGENHx-GREATERTHAN20GPMb.Placethefollowing switchestoCLOSE:~Letdownorificevalves(AOV-200A, AOV-200B, andAOV-202)~AOV-371,letdownisolation valve'AOV-427-, | |||
loopBcoldlegtoREGENHxc.Placeletdowncontrollers inMANUALat40%open~TCV-130~PCV-135d.ResetbothtrainsofXYrelaysforAOV-371andAOV-427e.OpenAOV-371andAOV-427f.Openletdownorificevalvesasnecessary g.PlaceTCV-130inAUTOat105'Fh.PlacePCV-135inAUTOat250psigi.AdjustchargingpumpspeedandHCV-142asnecessary | |||
~IFRCPsealreturnhasbeenestablished, THENestablish excessletdownasfollows:oPlaceexcessletdowndivertvalve,AOV-312,toNORMAL.oEnsureCCWfromexcessletdownopen,(AOV-745). | |||
oOpenexcessletdownisolation valveAOV'-310. | |||
oSlowlyopenHCV-123tomaintainexcessletdowntemperature lessthan195'Fandpressurelessthan100psig.oAdjustchargingpumpspeedasnecessary. | |||
IFRCPsealreturnNOTestablished, THENconsultTSCtodetermine ifexcessletdownshouldbeplacedinservice. | |||
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE17of21.STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED21CheckVCTMakeupSystem:a.AdjustboricacidflowcontrolvalveinAUTOto9.5gpmb.Adjust"RMW flowcontrolvalveinAUTOto40gpmc.Verifythefollowing: | |||
1)RMWmodeselectorswitchinAUTOc.'djustcontrolsasnecessary.- | |||
2)RMWcontrolarmed-REDLIGHTLITd.CheckVCTlevel:oLevel-GREATERTHAN20%-OR-oLevel-STABLEORINCREASING d.ManuallyincreaseVCTmakeupflowasfollows:1)EnsureBAtransferpumpsandRMWpumpsrunning.IFNOT,THENresetMCCCandMCCDUVlockoutsasnecessary. | |||
2)PlaceRMWflowcontrolvalveHCV-illinMANUALandincreaseRMWflow.~3)Increaseboricacidflowasnecessary. | |||
EOP:FR-P.1TITLE: | EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE18of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED22CheckChargingPumpSuctionAlignedToVCT:a.VCTlevel-GREATERTHAN20%a.IFVCTlevelcanNOTbemaintained greaterthan5%,THENperformthefollowing: | ||
EOP:FR-P.1jITLE: | 1)EnsurechargingpumpsuctionalignedtoRWSToLCV-112BopenoLCV-112Cclosed2)ContinuewithStep23.WHENVCTlevelgreaterthan40%,THENdoStep22b.b.VerifychargingpumpsalignedtoVCToLCV-112C-OPENoLCV-112B-CLOSEDb.Manuallyalignvalvesasnecessary. | ||
~41 EOP:FR-P.1TITLE: | 23CheckPRZRLevel-LESSTHAN87%[754adverseCNMT]Controlchargingandletdownasnecessary toreducePRZRleveltolessthan87$[75%adverseCNMT].Ifnecessary establish excessletdown.IFnoletdownavailable ANDCCWtoRCPsestablished, THENcyclechargingpumpsasnecessary tocontrolPRZRlevel. | ||
EOP:FR-P.1TITLE: | EOP:FR-P.1jITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE19of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:Foroptimumlongtermpressurecontrol,saturated conditions shouldberestoredinthePRZR.24VerifyPRZRLiquidTemperature (TZ-424)-ATSATURATION FORDESIREDPRESSUREIFPRZRliquidtemperature low,THENenergizePRZRheatersasnecessary toestablish desiredtemperature. | ||
~I~EOP:FR-P.1TITLE: | 25CheckRCSSubcooling BasedOnCoreExitT/Cs-LESSTHAN10'FUSINGFIGUREMZNSUBCOOLING IFRCSpressurelessthan160psig[200psigadverseCNMT],THENgotoStep26.IFNOT,THENdepressurize usingnormalspray.Returnto'step16b.IFnormalsprayNOTavailable andletdownisinservice,THENuseauxiliary sprayforanyfurtherdepressurization. | ||
ReturntoStep16b.IFauxiliary sprayNOTavailable, THENreturntoStep16a.26CheckCoolDownRateInRCSColdLegs-GREATERTHAN100'FINANY60MINUTESPERIODReturntoprocedure andstepineffect.27MaintainRCSPressureAndTemperature StableForAtLeast1Houra.Controlsteamdumpandfeedflowasnecessary b.Performactionsofotherprocedures ineffectwhichdonotcooldowntheRCSorincreaseRCSpressureuntiltheRCStemperature soakhasbeencompleted | |||
~41 EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV15PAGE20of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:Thefollowing | |||
: pressure, temperature andcooldownratelimitsremainapplicable insubsequent procedures. | |||
28WHEN1HOURSoakIsComplete, THENContinueRCSCooldownAndDepressurization AsNecessary a.MaintainRCSpressureandcoldlegtemperature withinthelimitsofFigureSOAKLIMITSb.Establish andmaintaincooldownrateinRCScoldlegs-LESSTHAN50'FINANY60MINUTESPERIOD29VerifySZFloeNotRequired: | |||
oRCSsubcooling basedoncoreexitT/Cs-GREATERTHANFIGUREMINSUBCOOLING oRVLISindication: | |||
oLevel-GREATERTHAN68%[73%adverseCNMT]-OR-oFluidfraction(anyRCPrunning)-GREATERTHAN80%ManuallyoperateSIpumpsasnecessary. | |||
IFRCSsubcooling basedoncoreexitT/CsgreaterthanFigureMINSUBCOOLING andnoRCPrunning,THENperformthefollowing: | |||
a.Establish conditions forstartinganRCP:oBus11Aor11Benergized oRefertoAttachment RCPSTARTb.IFconditions established, THENstartoneRCP. | |||
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE21of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED30ReturnToProcedure AndStepInEffect-END-40~g | |||
~I~EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE1of1FR-P.1APPENDIXLISTTITLEPAGES1)FIGUREMINSUBCOOLING 2)FIGURESOAKLIMITS3)FIGURERCPSEALLEAKOFF4)ATTACHMENT RCPSTART5)ATTACHMENT SD-16)ATTACHMENT CNMTRECIRCFANS7)ATTACHMENT N2PORVS | |||
~~4~~ | ~~4~~ | ||
EOP:FR-P.1T1TLE: | EOP:FR-P.1T1TLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE1of1FIGUREMINSUBCOOLING | ||
<oFR-P.1TlTLE:' | .NOTE:Subcooling Margin=Saturation Temperature FromFigureBelowI-]CoreExitT/CIndication RC25002400230022002100200019001800170016001500140013001200110010009008007006005004003002001000SPRESSURE(PSIG)RCSPRESSUREINCREMENTS 20PSIGSUBCOOLED REGIONADVERSNHTNORMALCNHTINADEQUATE'U BCOOLINGREGIONTEMPERATURE INCREMENTS 10'F200250300350400450500550600650700COREEXITSATURATION TEMPERATURE | ||
EOP:FR-P.1T!TLE: | (') | ||
<oFR-P.1TlTLE:'IRESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV'5-PAGE1of1RCS25002400230022002100200019001800170016001500140013001200110010009008007006005004003002001000PRESSURE(PSIG)RCSPRESSUREINCREHENTS 20PSIGFIGURESOAKLIMITSREHAINBELOWCURVETEHPERATURE INCREHENTS 10'F200250300350400450500550600650700RCSCOLOLEGTEMPERATURE | |||
('F) | |||
EOP:FR-P.1T!TLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV15PAGE1of1FIGURERCPSEALLEAKOFF¹1SEALLEAKRATE(GPM)6LEAKRATEINCREMENTS 0.2GPMNORMALOPERATING RANGEDPINCREMENTS 50PSI2505007501000125015001750200022502500¹1SEALDP(RCSPRESS-VCTPRESS)PSI lt'4;a~c~r-.PCEIl}} |
Revision as of 12:44, 29 June 2018
ML17264A822 | |
Person / Time | |
---|---|
Site: | Ginna |
Issue date: | 02/06/1997 |
From: | ROCHESTER GAS & ELECTRIC CORP. |
To: | |
Shared Package | |
ML17264A821 | List: |
References | |
FR-P.1, NUDOCS 9702190176 | |
Download: ML17264A822 (36) | |
Text
%OP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE1of21ROCHESTER GASANDELECTRICCORPORATION GINNASTATIONCONTROLLED COPYNUMBERRESPONSIMANAGEREFFECTIVE DATECATEGORY1.0REVIEWEDBY:97Oaaeos7e 9roeoifPDRAOOCK05005244)FPDR eEOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE2of21A.PURPOSE-Thisprocedure providesactionstoavoid,orlimit,thermalshockorpressurized thermalshocktothereactorpressurevessel,oroverpressure conditions atlowtemperature.
B.ENTRYCONDITIONS/SYMPTOMS 1.ENTRYCONDITIONS
-Thisprocedure isenteredfrom:a.F-0.4,INTEGRITY CriticalSafetyFunctionStatusTree,oneitheraREDorORANGEcondition.
EOP:FR-P.1TITt.E:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE3of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:AdverseCNMTvaluesshouldbeusedwheneverCNMT~ressureisgreaterthan4psigorCNMTradiation isgreaterthan10+R/hr.1CheckRCSPressure-GREATERTHAN250PSIGt'465PSIGadverseCNMT]IFRHRflowgreaterthan475gpm,THENreturntoprocedure andstepineffect.
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV15PAGE4.of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:AfaultedS/GisanyS/Gthatisdepressurizing inanuncontrolled manneroriscompletely depressurized.
2CheckRCSColCLegTemperatures
-STABLEORINCREASING TrytostopRCScooldown:
I'.EnsureS/GARVsclosed.b.ClosebothS/GMSIVs.c.EnsureMFWflowcontrolvalvesclosed.~MFWregulating valves~MFWbypassvalvesd.EnsureMFWpumpstripped.e.Rotatereheatersteamsupplycontroller camtoclosereheatersteamsupplyvalves.f.IFS/Gpressurelessthancondensate
- pressure, THENstopallcondensate pumps.g.IFRHRsysteminservice,THENstopanycooldownfromRHRsystem.h.Controltotalfeedflowtonon-faulted S/G(s)greaterthan200gpmuntilnarrowrangelevelgreaterthan5%[258adverseCNMT]inatleastonenon-faulted S/G.WHENS/Glevelgreaterthan5%[25%adverseCNMT]inonenon-faulted S/G,THENlimitfeedflowtostopRCScooldown.
ThisStepcontinued onthenextpage.
cOP:FR-P.1T1TLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE5of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED(Step2continued frompreviouspage)"i.MinimizecooldownfromfaultedS/G(s):1)ClosefaultedS/G(s)TDAFWpumpsteamsupplyvalve(s).
~S/GA,MOV-3505A
~S/GB,MOV-3504A 2)IFbothS/G(s)faulted,THENcontrolfeedflowat50gpmtoeachS/G.3)IFanyS/GNOTfaulted,THEN'isolateallfeedwater tofaultedS/Gunlessnecessary forRCStemperature
.control.
IFafaultedS/Gisnecessary forRCStemperature control,THENcontrolfeedflowat50gpmtothatS/G.3CheckPRZRPORVBlockValves:a.PowertoPORVblockvalvesAVAILABLE b.Blockvalves'-ATLEASTONEOPENa.RestorepowertoblockvalvesunlessblockvalvewasclosedtoisolateanopenPORV:~MOV-515,MCCDposition6C~MOV-516,MCCCposition6Cb.OpenonebiockvalveunlessitwasclosedtoisolateanopenPORV.IFatleastoneblockvalvecanNOTbeopened,THENdispatchAOtolocallycheckbreaker.~MOV-515,MCCDposition6C~MOV-516,MCCCposition6C
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV15PAGE6of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDCAUTIONIFANYPRZRPORVOPENSBECAUSEOFHIGHPRZRPRESSURE, THENSTEP4SHOULDBEPERFORMED AFTERPRESSUREDECREASES TOLESSTHANTHEAPPLICABLE PORVSETPOINT.
4CheckPRZRPORVStatus:a.CheckReactorVesselOverpressure Protection System-INSERVICEa.GotoStep4d.b.CheckRCSpressure-LESSTHAN410PSIGb.Performthefollowing:
1)EnsureatleastonePRZRPORVopen.2)ContinuewithStep5.WHENpressurelessthansetpoint, THENdoStep4e~c.GotoStep4ed.PRZRpressure-LESSTHAN2335PSIGe'VerifyPRZRPORVs-CLOSEDd.Performthefollowing:
1)EnsureatleastonePRZRPORVopen.2)ContinuewithStep5.WHENpressurelessthansetpoint, THENdoStep4e.e.Manuallyclosevalve.IFanyvalvecanNOTbeclosed,THENmanuallycloseitsblockvalve.
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE7of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED5CheckSZPumps-ANYRUNNINGGotoStep13.6CheckZfSZCanBeTerminated:
oRCSsubcooling basedoncoreexitT/Cs-GREATERTHAN50'FUSINGFIGUREMINSUBCOOLING oCheckRVLISindication:
oLevel(noRCPs)-GREATERTHAN68%[73%adverseCNMT)-OR-oFluidfraction(anyRCPrunning)-GREATERTHAN80%DoNOTstopSIpumps.Performthefollowing:
a.IFRCSsubcooling basedoncoreexitT/CsgreaterthanO'Fusing'igureMINSUBCOOLING andnoRCPrunning,THENattempttostartanRCP:1)Establish conditions forstartinganRCP:oBusllAor11B.energized oRefertoAttachment RCPSTART2)IFconditions established, THENstartoneRCP.b.GotoStep26".CAUTIONIFOFFSITEPOWERISLOSTAFTERSIRESET,THENSELECTEDSWPUMPSANDONECCWPUMPWILLAUTOSTARTONEMERGENCY D/G.MANUALACTIONWILLBEREQUIREDTORESTARTSAFEGUARDS EQUIPMENT.
7ResetSZ FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV15PAGE8of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED8StopSIAndRHRPumpsAnd,PlaceInAUTO9ResetCI:a.DepressCIresetpushbutton b.Verifyannunciator A-26,CNMTISOLATION
-EXTINGUISHED b.Performthefollowing:
1)ResetSI.h2)DepressCIresetpushbutton.
10VerifyAdequateSWFlow:a.CheckatleasttwoSWpumpsRUNNINGb.DispatchAOtoestablish normalshutdownalignment (RefertoAttachment SD-1)a.ManuallystartSW-pumpsaspowersupplypermits(258kweach).IFlessthantwoSWpumpsrunning,THENperformthe,following:
1)EnsureSWisolation.
2)DispatchAOtoestablish normalshutdownalignment (RefertoAttachment SD-1).3)GotoStep12.WHENadequateSWavailable, THENdoStep11.
~e0 EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE9of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED11Estahli.sh IAtoCNMT:a.Verifynon-safeguards bussesenergized fromoffsitepoweroBus13normalfeed-CLOSED-OR-oBus15normalfeed-,CLOSEDb.VerifySWisolation valvestoturbinebuilding-OPEN~MOV-4613andMOV-4670~MOV-4614andMOV-4664c.Verifyatleasttwoaircompressors
-RUNNINGd.CheckIAsupply:oPressure-GREATERTHAN60PSIGoPressure--STABLEORINCREASING e.ResetbothtrainsofXYrelaysforIAtoCNMTAOV-5392f.VerifyIAtoCNMTAOV-5392-OPENa.Performthefollowing:
1)Closenon-safeguards bustiebreakers:
~Bus13toBus14tie~Bus15toBus16tie2)Verifyadequateemergency D/Gcapacitytorunaircompressors (75kweach).IFNOT,THENevaluateifCNMTRECIRCfansshouldbestopped(RefertoAttachment CNMTRECIRCFANS).3)WHENbus15restored, THENresetcontrolroomlighting.
b.Manuallyalignvalves.c.Manuallystartaircompressors aspowersupplypermits(75kweach).IFaircompressors canNOTbestarted,THENdispatchAOtolocallyresetcompressors asnecessary.
d.Performthefollowing:
1)ContinueattemptstorestoreIA(RefertoAP-IA.l,LOSSOFINSTRUMENT AIR).2)ContinuewithStep12.WHENIArestored, THENdoStepslieandf.
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE10of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED12CheckIfChargingFlowHasBeenEstablished:
a.Chargingpumps-ANYRUNNINGa.Performthefollowing:
1)IFCCWflowislosttoanyRCPthermalbarrierORanyRCP¹1sealoutlettemperature offscalehigh,THENdispatchAOwithkeytoRWSTgatetolocallyclosesealinjection needlevalve(s)toaffectedRCP:~RCPA,V-300A'RCPB,V-300B2)EnsureHCV-142open,demandatOa.b.AlignchargingpumpsuctiontoRWST:oLCV-112B-OPENoLCV-112C-CLOSEDb.IFLCV-112BcanNOTbeopened,THENperformthefollowing:
1)VerifychargingpumpANOTrunningandplaceinPULLSTOP.c.Startchargingpumpsasnecessary toestablish charginglineflowtoREGENHX-GREATERTHAN20GPM2)DispatchAOtolocallyopenmanualchargingpumpsuctionfrom.RWST(V-358locatedinchargingpumproom).3)WHENV-358open,THENdirectAOtocloseV-268toisolatechargingpumpsBandCfromVCT(V-268locatedinchargingpumproom).
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE11of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED*13MonitorSIReinitiation Criteria:
o-RCSsubcooling basedoncoreexitT/Cs-GREATERTHANFIGUREMINSUBCOOLING oRVLISindication:
ManuallyoperateSIpumpsasnecessary andperformthefollowing
'.IFRCSsubcooling basedoncoreexitT/CsgreaterthanFigureMINSUBCOOLING andnoRCPrunning,THENattempttostartaRCP:oLevel-GREATERTHAN68%[73%adverseCNMT]-OR-oFluidfraction(anyRCPrunning)-GREATERTHAN80%1)Establish conditions forstartinganRCP:oBus11Aor11Benergized oRefertoAttachment RCPSTART2)IFconditions established, THENstartoneRCP.b.GotoStep26.14CheckRCSHotLegTemperatures
-STABLEIFincreasing, THENcontrolfeedflowanddumpsteamtostabilize RCShotlegtemperatures.,
IFdecreasing, THENverifythatactionsofStep2havebeenperformed beforecontinuing withprocedure.
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE12of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED15CheckIfSIACCUMsShouldBeIsolated:
a.Checkthefollowing:
oRCSsubcooling basedoncoreexitT/Cs-GREATERTHANO'USINGFIGUREMINSUBCOOLING a.ReturntoStep13.oRVLISindication:
oLevel-GREATERTHAN68%[73%adverseCNMT]-OR-oFluidfraction(anyRCPrunning)-GREATERTHAN80%b.DispatchAOwithlockedvalvekeytolocallyclosebreakersforSIACCUMdischarge valves~MOV-841,MCCCposition12F~MOV-865,MCCDposition12Cc.CloseSIACCUHdischarge valves~MOV-841~MOV-865c.Ventanyunisolated ACCUMs':1)Openventvalvesforunisolated SIACCUMs.d.LocallyreopenbreakersforMOV-841andMOV-865~ACCUMA,AOV-834A~ACCUMB,AOV-834B2)OpenHCV-945.3)'Continue withStep16.DoNOTdecreaseRCSpressuretolessthanunisolated ACCUMpressure.
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE13of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDCAUTIONTHERCSSHOULDNOTBEDEPRESSURIZED TOLESSTHANSIACCUMPRESSUREUNTILSIACCUMSISOLATED.
NOTE:oIfauxiliary sprayisinuse,sprayflowmaybeincreased byclosingnormalchargingvalveAOV-294andnormalPRZRsprayvalves.oWhenusingaPRZRPORVselectonewithanoperableblockvalve.16Depressurize RCSToDecreaseRCSSubcooling:
a.Depressurize usingnormalPRZRsprayifavailable a.IFnormalsprayNOTavailable, THENuseonePRZRPORV.IFIANOTavailable, THENrefertoAttachment N2PORVS.b.Depressurize RCSuntiloneofthefollowing conditions satisfied:
IFnoPRZRPORVavailable, THENuseauxiliary sprayvalve(AOV-296).
oRCSsubcooling basedoncoreexitT/Cs-LESSTHAN10'FUSINGFIGUREMINSUBCOOLING
-OR-oPRZRlevel-GREATERTHAN87$[75%adverseCNMT]-OR-oRCSpressure-LESSTHAN160psig[200psigadverseCNMT]c.StopRCSdepressurization tOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE14of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED*17MonitorRCPOperation:
a.RCPs-ANYRUNNINGb..Checkthefollowing:
oRCP¹1sealD/P-GREATERTHAN220PSIDa.GotoStep18.b.StopaffectedRCP(s).oRCP¹1sealleakoff-WITHINTHENORMALOPERATING RANGEOFFIGURERCPSEALLEAKOFFCAUTIONANINCREASEINRCSPRESSUREMAYRESULTINEXCESSIVE REACTORVESSELSTRESS.RCSPRESSUREANDTEMPERATURE SHOULDBEMAINTAINED STABLEWHILEPERFORMING SUBSEQUENT STEPSINTHISPROCEDURE.
18CheckPRZRLevel-GREATERTHAN134[404adverseCNMT]Trytorestorelevelwithchargingwhilemaintaining stableRCSpressure.
IFlevelcanNOTberestored, THENgotoStep25.
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV'5PAGE15of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED19CheckIfNormalCVCS,Operation CanBeEstablished a.VerifyIArestored:
oIAtoCNMT(AOV-5392)
-OPENoIApressure-GREATERTHAN60PSIGa.ContinuewithStep23.WHENIArestored, THENdo,Steps19through22.b.CCWpumps-ANYRUNNINGb.Performthefollowing:
c.Verifyinstrument busD-ENERGIZED d.Chargingpump-ANYRUNNING1)IFanyRCP¹1sealoutlettemperature offscalehigh,THENisolateCCWtothermalbarrierofaffectedRCP(s).~RCPA,MOV-749AandMOV-759A~RCPB,MOV-749BandMOV-759B2)ManuallystartoneCCWpump.c.EnergizeMCCB.IFMCCBNOTavailable, THENperformthefollowing:
1)VerifyMCCAenergized.
2)Placeinstrument busDonmaintenance supply.d.ContinuewithStep24.WHENanychargingpumprunning,THENdoSteps20through24.
Il FR-P.1TITLE:RESPONSETOZMMZNENTPRESSURZZED THERMALSHOCKCONDZTZON REV:15PAGE16of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDCAUTIONIFRCSPRESSURELESSTHAN250PSIG,THENPCV-135SHOULDBEADJUSTEDTOESTABLISH DESIREDLETDOWNFLOW,NOTTOINCREASEPRESSURE.
20Establish NormalLetdown:a.Establish charginglineflowtoREGENHx-GREATERTHAN20GPMb.Placethefollowing switchestoCLOSE:~Letdownorificevalves(AOV-200A, AOV-200B, andAOV-202)~AOV-371,letdownisolation valve'AOV-427-,
loopBcoldlegtoREGENHxc.Placeletdowncontrollers inMANUALat40%open~TCV-130~PCV-135d.ResetbothtrainsofXYrelaysforAOV-371andAOV-427e.OpenAOV-371andAOV-427f.Openletdownorificevalvesasnecessary g.PlaceTCV-130inAUTOat105'Fh.PlacePCV-135inAUTOat250psigi.AdjustchargingpumpspeedandHCV-142asnecessary
~IFRCPsealreturnhasbeenestablished, THENestablish excessletdownasfollows:oPlaceexcessletdowndivertvalve,AOV-312,toNORMAL.oEnsureCCWfromexcessletdownopen,(AOV-745).
oOpenexcessletdownisolation valveAOV'-310.
oSlowlyopenHCV-123tomaintainexcessletdowntemperature lessthan195'Fandpressurelessthan100psig.oAdjustchargingpumpspeedasnecessary.
IFRCPsealreturnNOTestablished, THENconsultTSCtodetermine ifexcessletdownshouldbeplacedinservice.
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE17of21.STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED21CheckVCTMakeupSystem:a.AdjustboricacidflowcontrolvalveinAUTOto9.5gpmb.Adjust"RMW flowcontrolvalveinAUTOto40gpmc.Verifythefollowing:
1)RMWmodeselectorswitchinAUTOc.'djustcontrolsasnecessary.-
2)RMWcontrolarmed-REDLIGHTLITd.CheckVCTlevel:oLevel-GREATERTHAN20%-OR-oLevel-STABLEORINCREASING d.ManuallyincreaseVCTmakeupflowasfollows:1)EnsureBAtransferpumpsandRMWpumpsrunning.IFNOT,THENresetMCCCandMCCDUVlockoutsasnecessary.
2)PlaceRMWflowcontrolvalveHCV-illinMANUALandincreaseRMWflow.~3)Increaseboricacidflowasnecessary.
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE18of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED22CheckChargingPumpSuctionAlignedToVCT:a.VCTlevel-GREATERTHAN20%a.IFVCTlevelcanNOTbemaintained greaterthan5%,THENperformthefollowing:
1)EnsurechargingpumpsuctionalignedtoRWSToLCV-112BopenoLCV-112Cclosed2)ContinuewithStep23.WHENVCTlevelgreaterthan40%,THENdoStep22b.b.VerifychargingpumpsalignedtoVCToLCV-112C-OPENoLCV-112B-CLOSEDb.Manuallyalignvalvesasnecessary.
23CheckPRZRLevel-LESSTHAN87%[754adverseCNMT]Controlchargingandletdownasnecessary toreducePRZRleveltolessthan87$[75%adverseCNMT].Ifnecessary establish excessletdown.IFnoletdownavailable ANDCCWtoRCPsestablished, THENcyclechargingpumpsasnecessary tocontrolPRZRlevel.
EOP:FR-P.1jITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE19of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:Foroptimumlongtermpressurecontrol,saturated conditions shouldberestoredinthePRZR.24VerifyPRZRLiquidTemperature (TZ-424)-ATSATURATION FORDESIREDPRESSUREIFPRZRliquidtemperature low,THENenergizePRZRheatersasnecessary toestablish desiredtemperature.
25CheckRCSSubcooling BasedOnCoreExitT/Cs-LESSTHAN10'FUSINGFIGUREMZNSUBCOOLING IFRCSpressurelessthan160psig[200psigadverseCNMT],THENgotoStep26.IFNOT,THENdepressurize usingnormalspray.Returnto'step16b.IFnormalsprayNOTavailable andletdownisinservice,THENuseauxiliary sprayforanyfurtherdepressurization.
ReturntoStep16b.IFauxiliary sprayNOTavailable, THENreturntoStep16a.26CheckCoolDownRateInRCSColdLegs-GREATERTHAN100'FINANY60MINUTESPERIODReturntoprocedure andstepineffect.27MaintainRCSPressureAndTemperature StableForAtLeast1Houra.Controlsteamdumpandfeedflowasnecessary b.Performactionsofotherprocedures ineffectwhichdonotcooldowntheRCSorincreaseRCSpressureuntiltheRCStemperature soakhasbeencompleted
~41 EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV15PAGE20of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:Thefollowing
- pressure, temperature andcooldownratelimitsremainapplicable insubsequent procedures.
28WHEN1HOURSoakIsComplete, THENContinueRCSCooldownAndDepressurization AsNecessary a.MaintainRCSpressureandcoldlegtemperature withinthelimitsofFigureSOAKLIMITSb.Establish andmaintaincooldownrateinRCScoldlegs-LESSTHAN50'FINANY60MINUTESPERIOD29VerifySZFloeNotRequired:
oRCSsubcooling basedoncoreexitT/Cs-GREATERTHANFIGUREMINSUBCOOLING oRVLISindication:
oLevel-GREATERTHAN68%[73%adverseCNMT]-OR-oFluidfraction(anyRCPrunning)-GREATERTHAN80%ManuallyoperateSIpumpsasnecessary.
IFRCSsubcooling basedoncoreexitT/CsgreaterthanFigureMINSUBCOOLING andnoRCPrunning,THENperformthefollowing:
a.Establish conditions forstartinganRCP:oBus11Aor11Benergized oRefertoAttachment RCPSTARTb.IFconditions established, THENstartoneRCP.
EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE21of21STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED30ReturnToProcedure AndStepInEffect-END-40~g
~I~EOP:FR-P.1TITLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE1of1FR-P.1APPENDIXLISTTITLEPAGES1)FIGUREMINSUBCOOLING 2)FIGURESOAKLIMITS3)FIGURERCPSEALLEAKOFF4)ATTACHMENT RCPSTART5)ATTACHMENT SD-16)ATTACHMENT CNMTRECIRCFANS7)ATTACHMENT N2PORVS
~~4~~
EOP:FR-P.1T1TLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV:15PAGE1of1FIGUREMINSUBCOOLING
.NOTE:Subcooling Margin=Saturation Temperature FromFigureBelowI-]CoreExitT/CIndication RC25002400230022002100200019001800170016001500140013001200110010009008007006005004003002001000SPRESSURE(PSIG)RCSPRESSUREINCREMENTS 20PSIGSUBCOOLED REGIONADVERSNHTNORMALCNHTINADEQUATE'U BCOOLINGREGIONTEMPERATURE INCREMENTS 10'F200250300350400450500550600650700COREEXITSATURATION TEMPERATURE
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<oFR-P.1TlTLE:'IRESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV'5-PAGE1of1RCS25002400230022002100200019001800170016001500140013001200110010009008007006005004003002001000PRESSURE(PSIG)RCSPRESSUREINCREHENTS 20PSIGFIGURESOAKLIMITSREHAINBELOWCURVETEHPERATURE INCREHENTS 10'F200250300350400450500550600650700RCSCOLOLEGTEMPERATURE
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EOP:FR-P.1T!TLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV15PAGE1of1FIGURERCPSEALLEAKOFF¹1SEALLEAKRATE(GPM)6LEAKRATEINCREMENTS 0.2GPMNORMALOPERATING RANGEDPINCREMENTS 50PSI2505007501000125015001750200022502500¹1SEALDP(RCSPRESS-VCTPRESS)PSI lt'4;a~c~r-.PCEIl