ML17263A271

Rev 7 to EOP FR-C.2, Response to Degraded Core Cooling.

ML17263A271
Person / Time
Site:	Ginna
Issue date:	04/21/1993
From:	MARLOW T A ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17263A269	List: ML17263A268 ML17263A270 ML17263A271 ML17263A272 ML17263A273 ML17263A274 ML17263A275 ML17263A276
References
FR-C.2, NUDOCS 9305140049
Download: ML17263A271 (28)

Text

EOP:FR-CD2TITLE:RESPONSETODEGRADEDCORECOOLINGREV:7PAGE1of15ROCHESTER GASANDELECTRICCORPORATION GINNASTATIONCONTROLLED COPYNUMBERTECHNICAL REVIEWPORCREVIEWDATEPLANTSUPERINTENDENT EFFECTIVE DATECATEGORY1.0REVIEWEDBY:9305140049 930505PDR'DOCK05000244~F EOP:FR-C.2RESPONSETODEGRADEDCORECOOLINGREV:7PAGE2of15A.PURPOSE-Thisprocedure providesactionstorestoreadequatecorecooling.B.ENTRYCONDITIONS/SYMPTOMS 1.ENTRYCONDITIONS

-Thisprocedure isenteredfrom:a.F-0.2,CORECOOLINGCriticalSafetyFunctionStatusTree,onanyORANGEcondition.

FR-C.2RESPONSETODEGRADEDCORECOOLINGREV:7PAGE3of15STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:AdverseCNMTvaluesshouldbeusedwheneverCNMTpressureisgreaterthan4psigorCNMTradiation isgreaterthan10+"5R/hr.1CheckRWSTLevel-GREATERTHAN284Performthefollowing:

a.EnsureSIsystemalignedforcoldlegrecirculation usingSteps1through11ofES-1.3,TRANSFERTOCOLDLEGRECIRCULATION.

b.GotoStep4.

J EOP:FR-C.2TITLE:RESPONSETODEGRADEDCORECOOLINGREV:7PAGE4of15STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED2VerifySIPumpAndRHRPumpEmergency Alignment:

a.RHRpumpdischarge toRxvesseldeluge-OPEN~MOV-852A~MOV-852Ba.Ensureatleastonevalveopen.b.VerifySIpumpC-RUNNINGb.Manuallystartpumponavailable bus.c.VerifySIpumpA-RUNNINGd.VerifySIpumpB-RUNNINGc.Performthefollowing:

1)EnsureSIpumpsBandCrunning.2)EnsureSIpumpCalignedtodischarge lineA:oMOV-871BclosedoMOV-871Aopen3)GotoStep3.d.Performthefollowing:

1)EnsureSIpumpsAandCrunning.2)EnsureSIpumpCalignedtodischarge lineB:oMOV-871BopenoMOV-871Aclosede.VerifybothSIpumpCdischarge valves-OPEN~MOV-871A~MOV-871B3)GotoStep3.e.Manuallyopenvalvesasnecessary.

EOP:FR-C.2TITLE:RESPONSETODEGRADED'CORE COOLINGREV:7PAGE5of15STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED3VerifySIPumpSuctionAlignment a.CheckBASTlevel:oLevel-GREATERTHAN10%oAnnunciator B-23,BORICACIDTANKLOLOLEVEL-EXTINGUISHED a.Performthefollowing:

1)EnsureatleastoneSIpumpsuctionvalvefromRWSTopen.~MOV-825A~MOV-825B2)Ensureatleastonevalvein"'eachSIpumpsuctionlinefromBASTclosed.~MOV-826AorMOV-826B~MOV-826CorMOV-826Db.VerifySIpumpsuctionvalvesfromBAST-OPEN~MOV-826A~MOV-826B~MOV-826C~MOV-826D3)GotoStep4.b.Ensurebothvalvesineitherflowpathopen.oMOV-826AandMOV-826B-OR-oMOV-826CandMOV-826Dc.VerifySIpumpsuctionfromRWSTCLOSED~MOV-825A~MOV-825Bc.Manuallyalignvalvesasnecessary.

EOP:FR-C.2RESPONSETODEGRADEDCORECOOLINGREV:7PAGE6of15STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED4VerifySIFlovInBothTrains:a.SIlineloopAandBflowindicators

-CHECKFORFLOWa.Performthefollowing:

1)ManuallystartSIpumpsandalignvalvesasnecessary.

2)Establish maximumchargingflow.b.RCSpressure-LESSTHAN250psig[465psigadverseCNMT]c.RHRloopflowindicator

-CHECKFORFLOWb.GotoStep5.c.ManuallystartRHRpumpsandalignvalves.

EOP:FR-C.2TITLE:RESPONSETODEGRADEDCORECOOLINGREV:7PAGE7of15STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED*****************************************CAUTIONIFANYPRZRPORVOPENSBECAUSEOFHIGHPRZRPRESSURE, ITSHOULDBECLOSEDAFTERPRESSUREDECREASES TOLESSTHAN2335PSIG(REFERTOSTEP5B).5CheckRCSVentPaths:a.PowertoPRZRPORVblockvalves-AVAILABLE b.PORVs-CLOSEDa.RestorepowertoblockvalvesunlessblockvalvewasclosedtoisolateanopenPORV:~MOV-515,MCCCposition6C~MOV-516,MCCDposition6Cb.IFPRZRpressurelessthan2335psig,THENmanuallyclosePORVs.IFanyPORVcanNOTbeclosed,THENmanuallycloseitsblockvalve.c.Blockvalves-ATLEASTONEOPENc.OpenoneblockvalveunlessitwasclosedtoisolateanopenPORV..d.RxvesselheadventvalvesCLOSEDd.Manuallyclosevalves.~SOV-590~SOV-591~SOV-592~SOV-593 EOP:FR-C.2RESPONSETODEGRADEDCORECOOLINGREV:7PAGE8of15STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:Normalconditions forrunningRCPsaredesired,butRCPsshouldnotbetrippedifnormalconditions cannotbeestablished ormaintained.

6CheckRCPStatus:a.AtleastoneRCP-RUNNINGb.Supportconditions fortheoperating RCP(s)available (RefertoAttachment RCPSTART)a.GotoStep9.b.Trytoestablish supportconditions fortheoperating RCP.7CheckRVLISFluidFractiona.Fluidfraction(anyRCPon)GREATERTHAN60%a.IFincreasing, THENreturntoStepl.b.Returntoprocedure andstepineffect.IFNOT,thengotoStep8.8CheckIfOneRCPShouldBeStopped:a.BothRCPs-RUNNINGb.StoponeRCPc.GotoStep10a.GotoStep10.

CE'ItIie EOP:FR-CD2RESPONSETODEGRADEDCORECOOLINGREV:7PAGE9of15STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED9CheckCoreCooling:a.RVLISlevel(noRCPs)-GREATERTHAN43%[46%adverseCNMT]b.CoreexitT/Cs-LESSTHAN700'Fc.Returntoprocedure andstepineffecta.IFincreasing, THENreturntoStep1.IFNOT,THENgotoStep10.b.IFdecreasing,'HEN returntoStepl.IFNOT,THENgotoStep10.10CheckSIACCUMDischarge Valves-OPEN~MOV-841~MOV-865IFSIACCUMdischarge valvesclosedafterACCUMdischarge, THENgotoStep11.IFNOT,THENperformthefollowing:

a.DispatchAOwithlockedvalvekeytolocallyclosebreakersforSIACCUMdischarge valves.~MOV-841,MCCCposition12F~MOV-865,MCCDposition12Cb.OpenSIACCUMdischarge valves.~ACCUMA,MOV-841~ACCUMB,MOV-865 EOP:FR-C.2TITLE:RESPONSETODEGRADEDCORECOOLINGREV:7PAGE10of15STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED*****************************************CAUTIONoIFCSTLEVELDECREASES TOLESSTHAN5FEET,THENALTERNATE WATERSOURCESFORAFWPUMPSWILLBENECESSARY (REFERTOER-AFW.1, ALTERNATE WATERSUPPLYTOAFWPUMPS).oAFAULTEDORRUPTUREDS/GSHOULDNOT,BEUSEDINSUBSEQUENT STEPSUNLESSNOINTACTS/GISAVAILABLE.

NOTE:TDAFWpumpflowcontrolvalvesfailopenonlossofIA.*llMonitorIntactS/GLevels:a.Narrowrangelevel-GREATERTHAN5%[25%adverseCNMT)b.Controlfeedflowtomaintainnarrowrangelevelbetween17%[25%adverseCNMT]and50%a.Increasetotalfeedflowtorestorenarrowrangelevelgreaterthan5%[25%adverseCNMT]inatleastoneS/G.12VerifyCondenser SteamDumpInManual:a.Verifycondenser available:

oIntactS/GMSIV-OPENoAnnunciator G-15,STEAMDUMPARMED-LITa.PlaceintactS/GARVcontroller inMANUALandgotoStep13.b.PlacesteamdumpmodeselectorswitchinMANUALc.Placesteamdumpcontroller inMANUAL EOP:FR-C.2TITLE:RESPONSETODEGRADEDCORECOOLINGREV:7PAGE11of15STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED*****************************************CAUTIONTHEFOLLOWING STEPWILLCAUSESIACCUMULATOR INJECTION WHICHMAYRESULTINAREDPATHCONDITION INF-0.4,INTEGRITY STATUSTREE.THISPROCEDURE SHOULDBECOMPLETED BEFORETRANSITION TOFR-P.l,RESPONSETOIMMINENTPRESSURIZED THERMALSHOCK.13Depressurize AllIntactS/GsTo200PSIG:a.MaintaincooldownrateinRCScoldlegs-LESSTHAN100'F/HRb.Dumpsteamtocondenser b.ManuallyorlocallydumpsteamfromintactS/Gs:oUseS/GARVs.-OR-oOpenTDAFWpumpsteamsupplyvalve(s)foraffectedS/G(s):~S/GA,MOV-3505A

~S/GB,MOV-3504A

-OR-oLocallyperformthefollowing:

oOpenintactS/GMSIVbypassvalve.oOpenprimingairejectorsteamisolation valves.~V-3580~V-3581c.CheckS/Gpressures

-LESSTHAN200PSIGc.ReturntoStep11.d.StopS/Gdepressurization EOP:FR-C.2TITLE:RESPONSETODEGRADEDCORECOOLINGREV:7PAGE12of15STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED*****************************************CAUTION'tRHRPUMPSSHOULDNOTBERUNLONGERTHAN1HOURWITHOUTCCWTOTHERHRHEATEXCHANGERS

.14CheckRHRPumps-RUNNINGManuallystartpumpsasnecessary.

15CheckIfSIACCUMsShouldBeIsolated:

a.RCShotlegtemperatures

-BOTHLESSTHAN400'Fb.DispatchAOwithlockedvalvekeytolocallyclosebreakersforSIACCUMdischarge valvesifnecessary

~MOV-841,MCCCposition12F~MOV-865,MCCDposition12Cc.CloseSIACCUMdischarge valves~MOV-841~MOV-865a.GotoStepECA-3.1,SGTRWITHLOSSOFREACTORCOOLANTSUBCOOLED RECOVERYDESIRED,Step1.c.Ventanyunisolated ACCUMs:1)Openventvalvesforunisolated SIACCUMs.~ACCUMA,AOV-834A~ACCUMB,AOV-834Bd.LocallyreopenbreakersforMOV-841andMOV-8652)OpenHCV-945.

FR-C.2TITLE:RESPONSETODEGRADEDCORECOOLINGREV:7PAGE13of15STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED*****************************************CAUTIONSYMPTOMSFORFR-C.1,RESPONSETOINADEQUATE CORECOOLING,SHOULDBECLOSELYMONITORED DURINGSUBSEQUENT STEPS.16StopAllRCPs17Depressurize AllIntactS/GsToAtmospheric Pressure:

a.MaintaincooldownrateinRCScoldlegs-LESSTHAN100'F/HRb.Dumpsteamtocondenser b.ManuallyorlocallydumpsteamfromintactS/Gs:1)UseS/GARVs,2)OpenTDAFVpumpsteamsupplyvalve(s)foraffectedS/G(s):~S/GA,MOV-3505A

~S/GB,MOV-3504A 3)Locallyperformthefollowing:

oOpenintactS/GMSIVbypassvalve.oOpenprimingaireffectorsteamisolation valves.~'V-3580~V-3581 EOP:FR-C.2TITLE:RESPONSETODEGRADEDCORECOOLINGREV:7PAGE14of15STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED18VerifySIFlow:oSIlineloopAandBflowindicators

-CHECKFORFLOWPerformthefollowing:

a.Continueeffortstoestablish SIflow.-OR-oRHRloopflowindicator

-CHECKFORFLOWb.Trytoestablish maximum.charging flow.c.ReturntoStep17.19IsolateBothSIACCUMs:a.CloseSIACCUMdischarge valves~MOV-841~MOV-865b.LocallyreopenbreakersforMOV-841andMOV-865a.Ventanyunisolated ACCUMs:1)Openventvalvesforunisolated SIACCUMs.~ACCUMA,AOV-834A~ACCUMB,AOV-834B2)OpenHCV-945.20StopAllRCPs21CheckCoreCooling:oRVLISlevel(noRCPs)-GREATERTHAN,68%[73%adverseCNMTjoBoth'RCShotlegtemperatures LESSTHAN320'FReturntoStep17.

FR-C.2RESPONSETODEGRADEDCORECOOLINGREV:7PAGE15of15STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED22GotoAppropriate PlantProcedure a.CheckRWSTlevel-GREATERTHAN28'.GotoE-l,LOSSOFREACTORORSECONDARY COOLANT,Step17-END-a.GotoES-1.3,TRANSFERTOCOLDLEGRECIRCULATION, Step1.

EOP:FR-C.2RESPONSETODEGRADEDCORECOOLINGREV:7PAGE1of1FR-C.2APPENDIXLISTT1TLE1)ATTACHMENT RCPSTARTPAGES EOP:AP-CCW.1TITLELEAKAGEINTOTHECOMPONENT COOLINGLOOPREV:7PAGE2of11A.PURPOSE-Thisprocedure providestheactionsrequiredtoidentifyandisolateleakageintotheCCWsystemandtocontroltheplantduringthecourseoftheevent.B.ENTRYCONDITIONS/SYMPTOMS 1.ENTRYCONDITIONS

-Thisprocedure isenteredfrom;a.AP-CVCS.1, CVCSLEAK,whenconditions indicateLEAKAGEINTOTHECOMPONENT COOLINGLOOP.2.SYMPTOMS-ThesymptomsofLEAKAGEINTOTHECOMPONENT COOLINGLOOPare;a.Annunciator A-5,COMPCOOLINGSURGETANKHILEVEL58.84,orb.CCWradiation monitor(R-17)alarm,orc.Annunciator A-7(15),RCP1A(1B)CCWRETURNHITEMPORLOFLOW165GPM125'F,ord.ErraticRCPlabyrinth sealD/P.

EOP:AP-CCW.1TITLE:LEAKAGEINTOTHECOMPONENT COOLINGLOOPREV7PAGE3ofllSTEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED*****************************************CAUTIONIF,ATANYTIMEDURINGTHISPROCEDURE, AREACTORTRIPORSIOCCURS'-Op REACTORTRIPORSAFETYINJECTION, SHALLBEPERFORMED.

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • NOTE:Letdowndiversion toCVCSHUTmaycauseR-17increaseoralarm.1CheckCCWRadiation Monitor(R-17)-INCREASING GotoStep11.2CheckCCWRadiation Monitor(R-17)-INALARMGotoStep4.3VerifyCCWSurgeTkVentRCV-017--CLOSEDCloseCCWsurgetkventRCV-017.4CheckRCSLeakage-GREATERTHANNORMAL(LeakagefoundonlatestRCSLeakageSurveillance Sheet)GotoStep11.

EOP:AP-CCW.1LEAKAGEINTOTHECOMPONENT COOLINGLOOPREV7PAGE4of11STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:RCPsmaybesafelyoperatedwithoutCCWtothethermalbarrierifsealinjection flowismaintained.

5CheckRCPThermalBarrierIndications:

oLabyrinth sealD/Ps-NORMAL(BothD/Psreadingapproximately thesamevalue)oRCPflsealleakoffflows-NORMAL(Checkflsealleak-offchartsfornormalindication) oAnnunciator A-7(15)RCP1A(1B)CCWRETURNHITEMPORLOPLOW165GPM125'PALARM-EXTINGUISHED IPeitherpumphasindication ofathermalbarrierleak,THEN:.a.Verifysealinjection flowb.CloseCCWfromlA(1B)thermalbarrierMOV-754A(754B).c.IFCCWsurgetanklevelstable,THENgotoStep19.d.IPCCWsurgetanklevelcontinues toincrease, THENgotoStep6.

r+rEOP:AP-CCW.1TITLE:LEAKAGEINTOTHECOMPONENT COOLINGLOOPREV7PAGE5of11STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED*****************************************CAUTIONCLOSELYMONITORPRZRLEVELWHILELETDOWNISISOLATED.

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 6CheckNRHXForLeakage:a.Normalletdown-INSERVICE b.Letdownindications a.IPexcessletdowninservice, THENgotoStep10.b.Isolateletdownasfollows:oLetdownlineflow-NORMAL(approximately 40GPM)oLowpressLTDNpressure-NORMAL(approximately 250psig)oNRHXCCWoutlet(localTI-600)-LESSTHAN190'Pc.GotoStepll1)CloseletdownloopBcoldlegtoRHxAOV-427.2)CloseLTDNorificesAOVs200A,200B,and202.3)PlacelowpressLTDNpressPI-135PCV-135inmanualANDclose(at100XDEMANDsignal).4)CloseHCV-142andreducechargingasnecessary.

5)GotoStep7.

EOP:AP-CCW.1TITLE:LEAKAGEINTOTHECOMPONENT COOLINGLOOPREV7PAGE6ofllSTEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED7CheckIfCCWInleakage HasStopped:oCCWsurgetanklevel-STABLERestorenormalletdown:a.Establish charginglineflowtoREGENHxgreaterthan20GPM.b.Placeletdowncontrollers TCV-130andPCV-135inmanualat25Xopen.c.OpenAOV-427.d.Openletdownorificevalvesasnecessary.

e.PlaceTCV-130inautoat105'P.f.PlacePCV-135inautoat250Psigog.Ad)ustchargingspeedandHCV-142asnecessary.

h.GotoStep11.

EOP:AP-CCW.1LEAKAGEINTOTHECOMPONENT COOLINGLOOPREV:7PAGE7of11STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED8Establish ExcessLetdown:a.Placeexcessletdowndivertvalve,AOV-312,toNORMAL,b.VerifyRCPsealreturnisolation valve,MOV-313,OPENc.EnsureCCVfromexcessletdownopen,(AOV-745) d.Openexcessletdownisolation valve,AOV-310e.SlowlyopenHCV-123tomaintainexcessletdowntemperature lessthan195'Fandpressurelessthan100psigf.Adjustchargingpumpspeedasnecessary 9CheckPRZRLevel:a.PRZRlevel-TRENDINGTOREFERENCE LEVELb.GotoStep18a.Reducechargingasnecessary tocontrolPRZRlevel.