ML17264A978

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Rev 12 to AP-RCS.1, Reactor Coolant Leak.
ML17264A978
Person / Time
Site: Ginna Constellation icon.png
Issue date: 08/05/1997
From:
ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17264A976 List:
References
AP-RCS.1, NUDOCS 9708130138
Download: ML17264A978 (14)


Text

EOP:AP-RCS.1REACTORCOOLANTLEAKREV:12PAGE1of11ROCHESTER GASANDELECTRICCORPORATION GINNASTATIONCONTROLLED COPYNUMBERRESPONSIB MANAGEREFFECTIVE DATECATEGORY1.0REVIEWEDBX:9708130%38 970805PDRADQCK05000244 EOP:AP-RCS.1REACTORCOOLANTLEAKREV:12PAGE2of11A.PURPOSE-Thisprocedure providestheinstructions necessary tomitigatetheconsequences ofareactorcoolantleak.B.ENTRYCONDITIONS/SYMPTOMS 1.ENTRYCONDITIONS

-Thisprocedure isenteredfrom:a.S-12.2,OPERATORACTIONINTHEEVENTOFINDICATION OFSIGNIFICANT INCREASEINLEAKAGE,whenasignificant increaseinRCSleakageisindicated.

b.AP-CVCS.1, CVCSLEAK,whenleakcannotbeisolated.

2.SYMPTOMS-ThesymptomsofREACTORCOOLANTLEAKare;a.Annunciator F-14,CHARGINGPUMP,SPEED,lit,orb.Annunciator A-2,VCTLEVEL14486,lit,orc.Annunciator E-16,RMSPROCESSMONITORHIGHACTIVITY, lit,ord.Annunciator E-24,RMSAREAMONITORHIGHACTIVITY, lit,ore.Annunciator F-4,PRESSURIZER LEVELDEVIATION

-5NORMAL+5,lit,'rf.Annunciator F-10,PRESSURIZER LOPRESS2185PSI,lit,org.Annunciator F-11,PRESSURIZER LOLEVEL134,lit.

EOP:AP-RCS.1REACTORCOOLANTLEAKREV:12PAGE3of11STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDCAUTIONIF,ATANYTIMEDURINGTHISPROCEDURE, AREACTORTRIPORSIOCCURS,E-O,REACTORTRIPORSAFETYINJECTION, SHALLBEPERFORMED.

NOTE:-Conditions shouldbeevaluated forsitecontingency reporting (RefertoEPIP-1.0, GINNASTATIONEVENTEVALUATION ANDCLASSIFICATION.

1CheckPRZRLevel-STABLEATPROGRAMLEVELIFPRZRleveldecreasing, THENstartadditional chargingpumpsandincreasespeedasnecessary tostabilize PRZRlevel.IFPRZRlevelcontinues todecrease, THENcloseloopBcoldlegtoREGENHxisolation valve,AOV-427.IFavailable chargingpumpsarerunningatmaximumspeedwithletdownisolated, ANDPRZRlevelisdecreasing, THENtripthereactorandgotoE-O,REACTORTRIPorSAFETYINJECTION.

EOP:AP-RCS.1T1TLE:REACTORCOOLANTLEAKREV:12PAGE4of11STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:IFVCTleveldecreases to5%,chargingpumpsuctionwillswaptotheRWST.Thismayrequirealoadreduction.

2CheckVCTMakeupSystem:a.VerifyVCTlevel-GREATERTHAN5aa.EnsurechargingpumpsuctionalignedtoRWST.~LCV-112B-OPEN~LCV-112C-CLOSEDb.Verifythefollowing:

1)RMWmodeselectorswitchinAUTOb.Adjustcontrolsasnecessary.

2)RMWcontrolarmed-REDLIGHTLITc.CheckVCT-level:oLevelGREATERTHAN20$-OR-oLevel-STABLEORINCREASING c.Checkletdowndivertvalve,LCV-112A, closed.IFVCTmakeupflowNOTadequate, THENperformthefollowing:

1)EnsureBAtransferpumpsandRMWpumpsrunning.2)AdjustRMWflowcontrolvalve,HCV-111,toincreaseRMWflow.3)Increaseboricacidflowasnecessary tomaintainrequiredconcentration.

IFVCTlevelcanNOTbemaintained, THENrefertoER-CVCS.1, REACTORMAKEUPCONTROLMALFUNCTION, ifnecessary.

EOP:AP-RCS.lTITLE:REACTORCOOLANTLEAKREV:12PAGE5ofllSTEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED3CheckIfRCSLeakageInCNMT:oCheckCNMTradiation monitors-NORMAL~R-2~R-7~R-lOA~R-11~R-12oCNMTsumpApumprunfrequency-NORMAL(RefertoRCSDailyLeakageLog)IFleakageisindicated inCNMT,THENperformthefollowing:

a.DirectHPtosampleCNMTforentry.b.Continue'with Step4.WHENCNMTclearedforentry,THENdispatchpersonnel toinvestigate CNMTforRCSleakage./CAUTIONRADIATION PROTECTION TECHNICIAN SHOULDBECONSULTED PRIORTOENTERINGAHIGHAIRBORNEAREA.4DispatchAOToAUXBLDGToInvestigate ForCVCSLeak(lockedareakeysrequired) 5CheckForLeakToCCWSystem:oCCWsurgetanklevel-APPROXIMATELY 50%AND'TABLE GotoAP-CCW.1, LEAKAGEINTOTHECOMPONENT COOLINGLOOP.oCCWradiation monitor,R-17-NORMAL EOP:AP-RCS.1TITLE:REACTORCOOLANTLEAKREV:12PAGE6of11STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED6CheckCVCSConditions:

a.Letdownindication:

oLetdownflow-APPROXIMATELY 40GPMoLowpressureLTDNpressure-APPROXIMATELY 250PSIGa.IFletdownisolated, THENcontinuewithStep6b.IFNOTisolated, THENgotoAP-CVCS.1, CVCSLEAK,Step6.oLetdownpressurecontrolvalve,PCV-135,demand-APPROXIMATELY 35%OPENb.Chargingindication:

oSealinjection flowsGREATERTHAN6GPMANDSTABLEb.GotoAP-CVCS.1, CVCSLEAK,Step6.oRCPLabyrinth sealD/PsGREATERTHAN15INCHESANDAPPROXIMATELY EQUALoChargingpumpdischarge pressure-GREATERTHANRCSPRESSUREc.AUXBLDGradiation levelsNORMAL~R-4~R-9~R-10B~R-13~R-14c.GotoAP-CVCS.1, CVCSLEAK,Step6andrefertoCVCSpipingdiagramsforfurtherguidance.

EOP:AP-RCS.1TlTLE:REACTORCOOLANTLEAKREV:12PAGE7of11STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED7CheckPRTIndications:

a.Level->BETWEEN61%AND84%b.Pressure-APPROXIMATELY 1.5PSIGANDSTABLEc.Temperature

-ATCNMTAMBIENTTEMPERATURE ANDSTABLEChecktailpipeandvalveleakofftemperatures forthePRZRsafetyvalvesandPORVsforindication ofleakage.IFnoPORV,orsafetyvalveleakageisindicated, THENcheckotherleakpathsfromtheRCStothePRT.~Letdownreliefvalve,RV-203~Sealreturnreliefvalve,RV-314CAUTIONSTEAMGENERATOR TUBELEAKAGEINONES/GSHALLNOTEXCEED0.1GPMWHENAVERAGEDOVER24HOURS.8CheckS/GsForLeakage:oAirejectorradiation monitors-~NORMALIFS/Gtubeleakindicated, THENreferto0-6.10,PLANTOPERATION WITHAS/GTUBELEAKINDICATION.

~R-15~R-15AoS/Gblowdownradiation monitor(R-19)-NORMALoSteamline radiation monitorsNORMAL~R-31~R-32oS/Gsampleactivity-NORMAL(CheckwithRPDepartment fornormal)

EOP:AP-RCS.1REACTORCOOLANTLEAKREV:12PAGE8of11STEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED9CheckSIAccumulator Levels-STABLECalculate inleakage toSIaccumulators (RefertoS-16.11,MONITORING INLEAKAGE TOSIACCUMULATORS).

10CheckRCPSealLeakoffFlows:oLeakoffflows-WITHINTHENORMALOPERATING RANGEOFFIGURERCPSEALLEAKOFFGotoAP-RCP.l, RCPSEALMALFUNCTION.

oLeakoffflows-STABLE11CheckRCDTLeakRate-NORMAL(RefertoRCSDailyLeakageLogandPPCSpointIDL1003)CheckothersourcesofinleakagetoRCDT:a.IFRxvesselflangeleakofftemperature hasincreased, THENcloseRxVESSFLANGESEAL'EAKOFF VLV,AOV-521.b.Verifyexcessletdownisolated.

IFNOT,THENensureRCDTdivertvalve,AOV-312,intheVCTposition.

c.IFsourceofleakageNOTdetermined, THENsuspectloopdrains.

EOP:AP-RCS.1TITLEREACTORCOOLANTLEAKREV:12PAGE9ofllSTEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINED12CheckValveLeakoffTemperatures

-NORMAL(RefertoPressurizer ValveLeak-OffTemperature RecordLog)IFanyvalveleakofftemperature isabnormally high,THENinitiateinvestigation ofthatleakagepath.13Establish StablePlantConditions:

a.PRZRlevel-TRENDINGTOPROGRAMb.CheckPRZRpressurecontrol:oPressure-TRENDINGTO2235PSIGoPRZRbackupheaters-OFFa.ControlchargingandletdownflowstorestorePRZRleveltoprogram.b.Verifyproperoperation ofPRZRheatersandsprayortakemanualcontrolofPRZRpressurecontroller 431K.IFpressurecanNOTbecontrolled, THENrefertoAP-PRZR,l, ABNORMALPRESSURIZER

PRESSURE, 14EvaluateRCSLeakage:a.Leakagewithinlimits(Refertoleakagesurveillance sheetandITSsection3.4.13)b.Leaklocationidentified a.IFleakNOTisolable, butPRZRlevelandsealinjection canbemaintained, THENshuttheplantdown(Referto0-2.1,NORMALSHUTDOWNTOHOTSHUTDOWNorAP-TURB.5, RAPIDLOADREDUCTION).

b.ReturntoStepl.

AP-RCS.1REACTORCOOLANTLEAKREV:12PAGE10ofllSTEPACTION/EXPECTED RESPONSERESPONSENOTOBTAINEDNOTE:Referto0-9.3,NRCIMMEDIATE NOTIFICATION, forreporting requirements.

15NotifyHigherSupervision

-END-EOP:REACTORCOOLANTLEAKREV:12PAGE11ofllAP-RCS.1APPENDIXLISTTITLEPAGES1)FIGURERCPSEALLEAKOFF EOP:AP-RCS.1TITLE:REACTORCOOLANTLEAKREV:12PAGE1of1FIGURERCPSEALLEAKOFFklSEALLEAKRATE(GPH)6LEAKRATEINCREHENTS 0.2GPH3NORHALOPERATING RANGEDPINCREHENTS 50PSI250500750100012501500175020002250250081SEALDP(RCSPRESS-VCTPRESS)PSI J