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:7PAGE1of15ROCHESTERGASANDELECTRICCORPORATIONGINNASTATIONCONTROLLEDCOPYNUMBERTECHNICALREVIEWPORCREVIEWDATEPLANTSUPERINTENDENTEFFECTIVEDATECATEGORY1.0REVIEWEDBY:9305140049930505PDR'DOCK05000244~F EOP:FR-C.2RESPONSETODEGRADEDCORECOOLINGREV:7PAGE2of15A.PURPOSE-Thisprocedureprovidesactionstorestoreadequatecorecooling.B.ENTRYCONDITIONS/SYMPTOMS1.ENTRYCONDITIONS-Thisprocedureisenteredfrom:a.F-0.2,CORECOOLINGCriticalSafetyFunctionStatusTree,onanyORANGEcondition.

FR-C.2RESPONSETODEGRADEDCORECOOLINGREV:7PAGE3of15STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINEDNOTE:AdverseCNMTvaluesshouldbeusedwheneverCNMTpressureisgreaterthan4psigorCNMTradiationisgreaterthan10+"5R/hr.1CheckRWSTLevel-GREATERTHAN284Performthefollowing:a.EnsureSIsystemalignedforcoldlegrecirculationusingSteps1through11ofES-1.3,TRANSFERTOCOLDLEGRECIRCULATION.b.GotoStep4.

J EOP:FR-C.2TITLE:RESPONSETODEGRADEDCORECOOLINGREV:7PAGE4of15STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED2VerifySIPumpAndRHRPumpEmergencyAlignment:a.RHRpumpdischargetoRxvesseldeluge-OPEN~MOV-852A~MOV-852Ba.Ensureatleastonevalveopen.b.VerifySIpumpC-RUNNINGb.Manuallystartpumponavailablebus.c.VerifySIpumpA-RUNNINGd.VerifySIpumpB-RUNNINGc.Performthefollowing:1)EnsureSIpumpsBandCrunning.2)EnsureSIpumpCalignedtodischargelineA:oMOV-871BclosedoMOV-871Aopen3)GotoStep3.d.Performthefollowing:1)EnsureSIpumpsAandCrunning.2)EnsureSIpumpCalignedtodischargelineB:oMOV-871BopenoMOV-871Aclosede.VerifybothSIpumpCdischargevalves-OPEN~MOV-871A~MOV-871B3)GotoStep3.e.Manuallyopenvalvesasnecessary.

EOP:FR-C.2TITLE:RESPONSETODEGRADED'CORECOOLINGREV:7PAGE5of15STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED3VerifySIPumpSuctionAlignmenta.CheckBASTlevel:oLevel-GREATERTHAN10%oAnnunciatorB-23,BORICACIDTANKLOLOLEVEL-EXTINGUISHEDa.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/EXPECTEDRESPONSERESPONSENOTOBTAINED4VerifySIFlovInBothTrains:a.SIlineloopAandBflowindicators-CHECKFORFLOWa.Performthefollowing:1)ManuallystartSIpumpsandalignvalvesasnecessary.2)Establishmaximumchargingflow.b.RCSpressure-LESSTHAN250psig[465psigadverseCNMT]c.RHRloopflowindicator-CHECKFORFLOWb.GotoStep5.c.ManuallystartRHRpumpsandalignvalves.

EOP:FR-C.2TITLE:RESPONSETODEGRADEDCORECOOLINGREV:7PAGE7of15STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONIFANYPRZRPORVOPENSBECAUSEOFHIGHPRZRPRESSURE,ITSHOULDBECLOSEDAFTERPRESSUREDECREASESTOLESSTHAN2335PSIG(REFERTOSTEP5B).5CheckRCSVentPaths:a.PowertoPRZRPORVblockvalves-AVAILABLEb.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/EXPECTEDRESPONSERESPONSENOTOBTAINEDNOTE:NormalconditionsforrunningRCPsaredesired,butRCPsshouldnotbetrippedifnormalconditionscannotbeestablishedormaintained.6CheckRCPStatus:a.AtleastoneRCP-RUNNINGb.SupportconditionsfortheoperatingRCP(s)available(RefertoAttachmentRCPSTART)a.GotoStep9.b.TrytoestablishsupportconditionsfortheoperatingRCP.7CheckRVLISFluidFractiona.Fluidfraction(anyRCPon)GREATERTHAN60%a.IFincreasing,THENreturntoStepl.b.Returntoprocedureandstepineffect.IFNOT,thengotoStep8.8CheckIfOneRCPShouldBeStopped:a.BothRCPs-RUNNINGb.StoponeRCPc.GotoStep10a.GotoStep10.

CE'ItIie EOP:FR-CD2RESPONSETODEGRADEDCORECOOLINGREV:7PAGE9of15STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED9CheckCoreCooling:a.RVLISlevel(noRCPs)-GREATERTHAN43%[46%adverseCNMT]b.CoreexitT/Cs-LESSTHAN700'Fc.Returntoprocedureandstepineffecta.IFincreasing,THENreturntoStep1.IFNOT,THENgotoStep10.b.IFdecreasing,'HENreturntoStepl.IFNOT,THENgotoStep10.10CheckSIACCUMDischargeValves-OPEN~MOV-841~MOV-865IFSIACCUMdischargevalvesclosedafterACCUMdischarge,THENgotoStep11.IFNOT,THENperformthefollowing:a.DispatchAOwithlockedvalvekeytolocallyclosebreakersforSIACCUMdischargevalves.~MOV-841,MCCCposition12F~MOV-865,MCCDposition12Cb.OpenSIACCUMdischargevalves.~ACCUMA,MOV-841~ACCUMB,MOV-865 EOP:FR-C.2TITLE:RESPONSETODEGRADEDCORECOOLINGREV:7PAGE10of15STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONoIFCSTLEVELDECREASESTOLESSTHAN5FEET,THENALTERNATEWATERSOURCESFORAFWPUMPSWILLBENECESSARY(REFERTOER-AFW.1,ALTERNATEWATERSUPPLYTOAFWPUMPS).oAFAULTEDORRUPTUREDS/GSHOULDNOT,BEUSEDINSUBSEQUENTSTEPSUNLESSNOINTACTS/GISAVAILABLE.NOTE:TDAFWpumpflowcontrolvalvesfailopenonlossofIA.*llMonitorIntactS/GLevels:a.Narrowrangelevel-GREATERTHAN5%[25%adverseCNMT)b.Controlfeedflowtomaintainnarrowrangelevelbetween17%[25%adverseCNMT]and50%a.Increasetotalfeedflowtorestorenarrowrangelevelgreaterthan5%[25%adverseCNMT]inatleastoneS/G.12VerifyCondenserSteamDumpInManual:a.Verifycondenseravailable:oIntactS/GMSIV-OPENoAnnunciatorG-15,STEAMDUMPARMED-LITa.PlaceintactS/GARVcontrollerinMANUALandgotoStep13.b.PlacesteamdumpmodeselectorswitchinMANUALc.PlacesteamdumpcontrollerinMANUAL EOP:FR-C.2TITLE:RESPONSETODEGRADEDCORECOOLINGREV:7PAGE11of15STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONTHEFOLLOWINGSTEPWILLCAUSESIACCUMULATORINJECTIONWHICHMAYRESULTINAREDPATHCONDITIONINF-0.4,INTEGRITYSTATUSTREE.THISPROCEDURESHOULDBECOMPLETEDBEFORETRANSITIONTOFR-P.l,RESPONSETOIMMINENTPRESSURIZEDTHERMALSHOCK.13DepressurizeAllIntactS/GsTo200PSIG:a.MaintaincooldownrateinRCScoldlegs-LESSTHAN100'F/HRb.Dumpsteamtocondenserb.ManuallyorlocallydumpsteamfromintactS/Gs:oUseS/GARVs.-OR-oOpenTDAFWpumpsteamsupplyvalve(s)foraffectedS/G(s):~S/GA,MOV-3505A~S/GB,MOV-3504A-OR-oLocallyperformthefollowing:oOpenintactS/GMSIVbypassvalve.oOpenprimingairejectorsteamisolationvalves.~V-3580~V-3581c.CheckS/Gpressures-LESSTHAN200PSIGc.ReturntoStep11.d.StopS/Gdepressurization EOP:FR-C.2TITLE:RESPONSETODEGRADEDCORECOOLINGREV:7PAGE12of15STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTION'tRHRPUMPSSHOULDNOTBERUNLONGERTHAN1HOURWITHOUTCCWTOTHERHRHEATEXCHANGERS.14CheckRHRPumps-RUNNINGManuallystartpumpsasnecessary.15CheckIfSIACCUMsShouldBeIsolated:a.RCShotlegtemperatures-BOTHLESSTHAN400'Fb.DispatchAOwithlockedvalvekeytolocallyclosebreakersforSIACCUMdischargevalvesifnecessary~MOV-841,MCCCposition12F~MOV-865,MCCDposition12Cc.CloseSIACCUMdischargevalves~MOV-841~MOV-865a.GotoStepECA-3.1,SGTRWITHLOSSOFREACTORCOOLANTSUBCOOLEDRECOVERYDESIRED,Step1.c.VentanyunisolatedACCUMs:1)OpenventvalvesforunisolatedSIACCUMs.~ACCUMA,AOV-834A~ACCUMB,AOV-834Bd.LocallyreopenbreakersforMOV-841andMOV-8652)OpenHCV-945.

FR-C.2TITLE:RESPONSETODEGRADEDCORECOOLINGREV:7PAGE13of15STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONSYMPTOMSFORFR-C.1,RESPONSETOINADEQUATECORECOOLING,SHOULDBECLOSELYMONITOREDDURINGSUBSEQUENTSTEPS.16StopAllRCPs17DepressurizeAllIntactS/GsToAtmosphericPressure:a.MaintaincooldownrateinRCScoldlegs-LESSTHAN100'F/HRb.Dumpsteamtocondenserb.ManuallyorlocallydumpsteamfromintactS/Gs:1)UseS/GARVs,2)OpenTDAFVpumpsteamsupplyvalve(s)foraffectedS/G(s):~S/GA,MOV-3505A~S/GB,MOV-3504A3)Locallyperformthefollowing:oOpenintactS/GMSIVbypassvalve.oOpenprimingaireffectorsteamisolationvalves.~'V-3580~V-3581 EOP:FR-C.2TITLE:RESPONSETODEGRADEDCORECOOLINGREV:7PAGE14of15STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED18VerifySIFlow:oSIlineloopAandBflowindicators-CHECKFORFLOWPerformthefollowing:a.ContinueeffortstoestablishSIflow.-OR-oRHRloopflowindicator-CHECKFORFLOWb.Trytoestablishmaximum.chargingflow.c.ReturntoStep17.19IsolateBothSIACCUMs:a.CloseSIACCUMdischargevalves~MOV-841~MOV-865b.LocallyreopenbreakersforMOV-841andMOV-865a.VentanyunisolatedACCUMs:1)OpenventvalvesforunisolatedSIACCUMs.~ACCUMA,AOV-834A~ACCUMB,AOV-834B2)OpenHCV-945.20StopAllRCPs21CheckCoreCooling:oRVLISlevel(noRCPs)-GREATERTHAN,68%[73%adverseCNMTjoBoth'RCShotlegtemperaturesLESSTHAN320'FReturntoStep17.

FR-C.2RESPONSETODEGRADEDCORECOOLINGREV:7PAGE15of15STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED22GotoAppropriatePlantProcedurea.CheckRWSTlevel-GREATERTHAN28'.GotoE-l,LOSSOFREACTORORSECONDARYCOOLANT,Step17-END-a.GotoES-1.3,TRANSFERTOCOLDLEGRECIRCULATION,Step1.

EOP:FR-C.2RESPONSETODEGRADEDCORECOOLINGREV:7PAGE1of1FR-C.2APPENDIXLISTT1TLE1)ATTACHMENTRCPSTARTPAGES EOP:AP-CCW.1TITLELEAKAGEINTOTHECOMPONENTCOOLINGLOOPREV:7PAGE2of11A.PURPOSE-ThisprocedureprovidestheactionsrequiredtoidentifyandisolateleakageintotheCCWsystemandtocontroltheplantduringthecourseoftheevent.B.ENTRYCONDITIONS/SYMPTOMS1.ENTRYCONDITIONS-Thisprocedureisenteredfrom;a.AP-CVCS.1,CVCSLEAK,whenconditionsindicateLEAKAGEINTOTHECOMPONENTCOOLINGLOOP.2.SYMPTOMS-ThesymptomsofLEAKAGEINTOTHECOMPONENTCOOLINGLOOPare;a.AnnunciatorA-5,COMPCOOLINGSURGETANKHILEVEL58.84,orb.CCWradiationmonitor(R-17)alarm,orc.AnnunciatorA-7(15),RCP1A(1B)CCWRETURNHITEMPORLOFLOW165GPM125'F,ord.ErraticRCPlabyrinthsealD/P.

EOP:AP-CCW.1TITLE:LEAKAGEINTOTHECOMPONENTCOOLINGLOOPREV7PAGE3ofllSTEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONIF,ATANYTIMEDURINGTHISPROCEDURE,AREACTORTRIPORSIOCCURS'-OpREACTORTRIPORSAFETYINJECTION,SHALLBEPERFORMED.*****************************************NOTE:LetdowndiversiontoCVCSHUTmaycauseR-17increaseoralarm.1CheckCCWRadiationMonitor(R-17)-INCREASINGGotoStep11.2CheckCCWRadiationMonitor(R-17)-INALARMGotoStep4.3VerifyCCWSurgeTkVentRCV-017--CLOSEDCloseCCWsurgetkventRCV-017.4CheckRCSLeakage-GREATERTHANNORMAL(LeakagefoundonlatestRCSLeakageSurveillanceSheet)GotoStep11.

EOP:AP-CCW.1LEAKAGEINTOTHECOMPONENTCOOLINGLOOPREV7PAGE4of11STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINEDNOTE:RCPsmaybesafelyoperatedwithoutCCWtothethermalbarrierifsealinjectionflowismaintained.5CheckRCPThermalBarrierIndications:oLabyrinthsealD/Ps-NORMAL(BothD/Psreadingapproximatelythesamevalue)oRCPflsealleakoffflows-NORMAL(Checkflsealleak-offchartsfornormalindication)oAnnunciatorA-7(15)RCP1A(1B)CCWRETURNHITEMPORLOPLOW165GPM125'PALARM-EXTINGUISHEDIPeitherpumphasindicationofathermalbarrierleak,THEN:.a.Verifysealinjectionflowb.CloseCCWfromlA(1B)thermalbarrierMOV-754A(754B).c.IFCCWsurgetanklevelstable,THENgotoStep19.d.IPCCWsurgetanklevelcontinuestoincrease,THENgotoStep6.

r+rEOP:AP-CCW.1TITLE:LEAKAGEINTOTHECOMPONENTCOOLINGLOOPREV7PAGE5of11STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED*****************************************CAUTIONCLOSELYMONITORPRZRLEVELWHILELETDOWNISISOLATED.*****************************************6CheckNRHXForLeakage:a.Normalletdown-INSERVICEb.Letdownindicationsa.IPexcessletdowninservice,THENgotoStep10.b.Isolateletdownasfollows:oLetdownlineflow-NORMAL(approximately40GPM)oLowpressLTDNpressure-NORMAL(approximately250psig)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:LEAKAGEINTOTHECOMPONENTCOOLINGLOOPREV7PAGE6ofllSTEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED7CheckIfCCWInleakageHasStopped:oCCWsurgetanklevel-STABLERestorenormalletdown:a.EstablishcharginglineflowtoREGENHxgreaterthan20GPM.b.PlaceletdowncontrollersTCV-130andPCV-135inmanualat25Xopen.c.OpenAOV-427.d.Openletdownorificevalvesasnecessary.e.PlaceTCV-130inautoat105'P.f.PlacePCV-135inautoat250Psigog.Ad)ustchargingspeedandHCV-142asnecessary.h.GotoStep11.

EOP:AP-CCW.1LEAKAGEINTOTHECOMPONENTCOOLINGLOOPREV:7PAGE7of11STEPACTION/EXPECTEDRESPONSERESPONSENOTOBTAINED8EstablishExcessLetdown:a.Placeexcessletdowndivertvalve,AOV-312,toNORMAL,b.VerifyRCPsealreturnisolationvalve,MOV-313,OPENc.EnsureCCVfromexcessletdownopen,(AOV-745)d.Openexcessletdownisolationvalve,AOV-310e.SlowlyopenHCV-123tomaintainexcessletdowntemperaturelessthan195'Fandpressurelessthan100psigf.Adjustchargingpumpspeedasnecessary9CheckPRZRLevel:a.PRZRlevel-TRENDINGTOREFERENCELEVELb.GotoStep18a.ReducechargingasnecessarytocontrolPRZRlevel.