ML17264A822

Rev 15 to FR-P.1, Response to Imminent Pressurized Thermal Shock Condition.

ML17264A822
Person / Time
Site:	Ginna
Issue date:	02/06/1997
From:	ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17264A821	List: ML17264A820 ML17264A822 ML17311A041
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

('F)

EOP:FR-P.1T!TLE:RESPONSETOIMMINENTPRESSURIZED THERMALSHOCKCONDITION REV15PAGE1of1FIGURERCPSEALLEAKOFF¹1SEALLEAKRATE(GPM)6LEAKRATEINCREMENTS 0.2GPMNORMALOPERATING RANGEDPINCREMENTS 50PSI2505007501000125015001750200022502500¹1SEALDP(RCSPRESS-VCTPRESS)PSI lt'4;a~c~r-.PCEIl