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{{#Wiki_filter:ACCELERATEDDISIKBUTIONDEMONSTRA.TIONSYSTEMREGULATINFORMATIONDISTRIBUTION+STEM(RIDE)ACCESSIONNBR:8903220424DOC.DATE:89/03/14NOTARIZED:NODOCKETFACIL:50-4lgBeaverValleyPowerStation,Unit2,DuquesneLightC05000412AUTH.NAMEAUTHORAFFILIATIONNOONANFT.P.DuquesneLightCo.RECIP.NAMERECIPIENTAFFILIATION
{{#Wiki_filter:ACCELERATED DISIKBUTION DEMONSTRA.TION SYSTEMREGULATINFORMATION DISTRIBUTION+STEM (RIDE)ACCESSION NBR:8903220424 DOC.DATE:
89/03/14NOTARIZED:
NODOCKETFACIL:50-4lg BeaverValleyPowerStation,Unit2,DuquesneLightC05000412AUTH.NAMEAUTHORAFFILIATION NOONANFT.P.
DuquesneLightCo.RECIP.NAME RECIPIENT AFFILIATION


==SUBJECT:==
==SUBJECT:==
LER89-003-00:on890212,reactortrippedduetomainfeedwaterregulatingvalvefailure.W/890314ltr.W/8DISTRIBUTIONCODE:IE22DCOPIESRECEIVED:LTRtENCLISIZE:TITLE:50.73LicenseeEventReport(LER),IncidentRpt,etc.NOTES:LPDR2cysTranscripts.LPDR2cysPDRDocuments.Applicationforpermitrenewalfiled.05000412RECIPIENTIDCODE/NAMEPDl-4LATAMFPINTERNAL:ACRSMICHELSONACRSWYLIEAEOD/DSP/TPABARM/DCTS/DABNRR/DEST/ADE8HNRR/DEST/CEB8HNRR/DEST/ICSB7NRR/DEST/MTB9H.NRR/DEST/RSB8ENRR/DLPQ/HFB10NRR/DOEA/EAB11NRR/DREP/RPB10NUDOCS-ABSTRACTRES/DSIR/EIBRGN1FILE01EXTERNAL:EGSGWILLIAMSFSHSTLOBBYWARDNRCPDRNSICMURPHYFG.ANOTES:COPIESLTTRENCL111111111111111111111111112211111144111'1122RECIPIENTIDCODE/NAMEPD1-4PDACRSMOELLERAEOD/DOAAEOD/ROAB/DSPDEDRONRR/DEST/ADS7ENRR/DEST/ESB8DNRR/DEST/MEB9HNRR/DEST/PSB8DNRR/DEST/SGB8DNRR/DLPQ/QAB10NRR/DREP/RAB10NRRJ3/SIB9AREGFjj02RES/DSR/FRABFORDBLDGHOYFALPDRNSICMAYSFGCOPIESLTTRENCL112211221110111111111111111111111111NOZE'IOALL'RIDS"RICIPZEPIS:PIZASEHELPUSIOIlEDUCE%ASTlCGKPACTIHEDCjCUNE&#xc3;ZCG&#xc3;IK)LDESKFROC'l-37(EXT.20079)%0EIZKBRXSYOURMHBHKHDISTBZBUTICNLIBTSFORDOC(IMENISYOUDQHFTNEED<TOTALNUMBEROFCOPIESREQUIRED:LTTR47ENCL46  
LER89-003-00:on 890212,reactor trippedduetomainfeedwater regulating valvefailure.W/890314 ltr.W/8DISTRIBUTION CODE:IE22DCOPIESRECEIVED:LTR tENCLISIZE:TITLE:50.73LicenseeEventReport(LER),IncidentRpt,etc.NOTES:LPDR 2cysTranscripts.
LPDR2cysPDRDocuments.
Application forpermitrenewalfiled.05000412RECIPIENT IDCODE/NAME PDl-4LATAMFPINTERNAL:
ACRSMICHELSON ACRSWYLIEAEOD/DSP/TPAB ARM/DCTS/DAB NRR/DEST/ADE 8HNRR/DEST/CEB 8HNRR/DEST/ICSB 7NRR/DEST/MTB 9H.NRR/DEST/RSB 8ENRR/DLPQ/HFB 10NRR/DOEA/EAB 11NRR/DREP/RPB 10NUDOCS-ABSTRACT RES/DSIR/EIB RGN1FILE01EXTERNAL:
EGSGWILLIAMSFS HSTLOBBYWARDNRCPDRNSICMURPHYFG.A NOTES:COPIESLTTRENCL111111111111111111111111112211111144111'1122RECIPIENT IDCODE/NAME PD1-4PDACRSMOELLERAEOD/DOAAEOD/ROAB/DSP DEDRONRR/DEST/ADS 7ENRR/DEST/ESB 8DNRR/DEST/MEB 9HNRR/DEST/PSB 8DNRR/DEST/SGB 8DNRR/DLPQ/QAB 10NRR/DREP/RAB 10NRRJ3/SIB9AREGFjj02RES/DSR/FRAB FORDBLDGHOYFALPDRNSICMAYSFGCOPIESLTTRENCL112211221110111111111111111111111111NOZE'IOALL'RIDS"RICIPZEPIS:
PIZASEHELPUSIOIlEDUCE%ASTlCGKPACTIHEDCjCUNE&#xc3;Z CG&#xc3;IK)LDESKFROC'l-37(EXT.20079)%0EIZKBRXSYOURMHBHKHDISTBZBUTICN LIBTSFORDOC(IMENIS YOUDQHFTNEED<TOTALNUMBEROFCOPIESREQUIRED:
LTTR47ENCL46  


NRCForm388(9.83)I(LICENSEEEVENTREPORTILER)U.S.NUCLEARREGULATORYCOMMISSIONAPPROVEOOMBNO.31504104EXPIRES:8/31/88FACILITYNAMEIIITITLE(4)ReactorTripDuetoMainFeedwaterRegulatingValveFailureDOCKETNUMBER(2)05000PAGE3/1OF0FVENTDATE(5)LERNUMBER(5)REPORTDATEI7)OTHERFACILI'TIFSINVOLVED(8)MONTHOAYYEARYEARSEGVENTIALNVMSEAyh'.REVISION'AiNUMBERMONTHOAYYEARFACILITYNAMESDOCKETNUMBER(s)0500021289890030003489N/A05000OPERATINGMODE(SIPOWERLEYELP55(10)5?'PNryr'Q?yr'rc'yvynHXrg?e"@.gp.'0.402(bl20.405(el(Ii(i)20.405(el(1)(ii)20.405(eI)II(ii))20.405(~l(l)IIv)20.405(~l(1)(vl20A05(cl50.35(cl(II50.35IcI(2)5073(el(2)li)d0.73(~l(2)(i/I50.73(e)(2I(iii)LICENSEECONTACTFORTHISLER(12)50.73(e)(2)(iv)50.73(~)(2)(v)50,73(~)(21(viil50.73(~)(2)(wii)IAI50.73(~)12)(wii)IBI50.73(~)(2)(rrl0THEREOUIREMENTSOF10CFR(I:/CheckoneormorcOItncIoliowrnP/(11)THISREPORTISSUBMITTEDPURSUANTT73.71(b)73.71IclOTHER/SpetiryInAprrreCtoe/owenriinTert,NIICForm366AINAMEMr.ThomasP.Noonan,PlantManagerTELEPHONENUMBERAREACODE412643-125COMPLETEONELINEFOREACHCOMPONENTFAILUREOESCRIBEOINTHISREPORT(13)CAUSESYSTEMCOMPONENTMANUFAC.TURERREPORTABLEpCAUSESYSTEMCOMPONENTMANVFAC.TVRERXJBFCVC635Y$P:,"'''.'SVPPLEMEN1'ALREPORTEXPECTFD(14)YES//Iycr,comp/etcEXPECTEDSU84IISSIOIYDATE/ABSTRACTILimrtto/400rpeccr./c,,epprovimeteiy/i/teenr/npletortetyPcwrinen/inn/l(d)EXPECTEDSU8MISSI0NDATE(15IMONTHOAYYEARNRCForm358(983)On2/12/89,withtheUnitinPowerOperation,apowerreductionfrom904reactorpowerto50%reactorpowerwasinprogressaspartofEndofCoreLifeprograms.At0048hours,operatorsnoticederraticoperationofthe"C"MainFeedwaterRegulatingValve(MFRV).Theoperatorsplacedthe"C"MFRVinmanualtocontrolsteamgeneratorlevel.At0108hoursatapproximately55~reactorpower,the"A"MainFeedwaterPumpwasshutdowntoreducethepressuredifferentialacrossthevalveallowingeasiervalvemovementandcontrol.At0120hours,aturbinetrip/reactortripoccurredduetoahighwaterlevelinthe"C"steamgenerator.TheoperatorsstabilizedtheplantinHotShutdownutilizingtheEmergencyOperatingProcedures.TheHC"MFRVwasfoundtohaveshearedanti-rotationpinsandthestemdetachedfromthevalveplug.Thecauseforthevalvefailurewasattributedtohydraulicforcesandvibrationactingovertime.TheMFRVswerealldisassembled,inspectedandrepairedasnecessary.ThiseventwasreportedtotheNuclearRegulatoryCommissionat0300hours,inaccordancewith10CFR50.72.b.2.ii.Therewerenosafetyimplicationstothepublicasaresultofthisevent.ThistypeofeventhaspreviouslybeenanalyzedasstatedintheUpdatedFinalSafetyAnalysisReport,Section15.1.2,"FeedwaterSystemMalfunctionsCausinganIncreaseInFeedwaterFlow".89032204248903i4$)PDRADOCK05000412SPNU  
NRCForm388(9.83)I(LICENSEEEVENTREPORTILER)U.S.NUCLEARREGULATORY COMMISSION APPROVEOOMBNO.31504104EXPIRES:8/31/88FACILITYNAMEIIITITLE(4)ReactorTripDuetoMainFeedwater Regulating ValveFailureDOCKETNUMBER(2)05000PAGE3/1OF0FVENTDATE(5)LERNUMBER(5)REPORTDATEI7)OTHERFACILI'TIFS INVOLVED(8)MONTHOAYYEARYEARSEGVENTIAL NVMSEAyh'.REVISION'AiNUMBERMONTHOAYYEARFACILITYNAMESDOCKETNUMBER(s) 0500021289890030003489N/A05000OPERATING MODE(SIPOWERLEYELP55(10)5?'PNryr'Q?y r'rc'yvynHXrg?e"@.gp.'0.402(bl 20.405(el(I i(i)20.405(el(1)(ii)20.405(eI)II(ii))20.405(~l(l)IIv)20.405(~l(1)(vl20A05(cl50.35(cl(II 50.35IcI(2)5073(el(2)li)d0.73(~l(2)(i/I50.73(e)(2I(iii)LICENSEECONTACTFORTHISLER(12)50.73(e)(2)(iv)50.73(~)(2)(v)50,73(~)(21(viil50.73(~)(2)(wii)IAI 50.73(~)12)(wii)IBI 50.73(~)(2)(rrl0THEREOUIREMENTS OF10CFR(I:/CheckoneormorcOItncIoliowrnP/
(11)THISREPORTISSUBMITTED PURSUANTT73.71(b)73.71IclOTHER/SpetiryInAprrreCtoe/owenriinTert,NIICForm366AINAMEMr.ThomasP.Noonan,PlantManagerTELEPHONE NUMBERAREACODE412643-125COMPLETEONELINEFOREACHCOMPONENT FAILUREOESCRIBEO INTHISREPORT(13)CAUSESYSTEMCOMPONENT MANUFAC.TURERREPORTABLE pCAUSESYSTEMCOMPONENT MANVFAC.TVRERXJBFCVC635Y$P:,"'''.'SVPPLEMEN1'AL REPORTEXPECTFD(14)YES//Iycr,comp/etcEXPECTEDSU84IISSIOIY DATE/ABSTRACTILimrtto/400rpeccr./c,,epprovimeteiy
/i/teenr/npletortetyPcwrinen
/inn/l(d)EXPECTEDSU8MISSI0NDATE(15IMONTHOAYYEARNRCForm358(983)On2/12/89,withtheUnitinPowerOperation, apowerreduction from904reactorpowerto50%reactorpowerwasinprogressaspartofEndofCoreLifeprograms.
At0048hours,operators noticederraticoperation ofthe"C"MainFeedwater Regulating Valve(MFRV).Theoperators placedthe"C"MFRVinmanualtocontrolsteamgenerator level.At0108hoursatapproximately 55~reactorpower,the"A"MainFeedwater Pumpwasshutdowntoreducethepressuredifferential acrossthevalveallowingeasiervalvemovementandcontrol.At0120hours,aturbinetrip/reactor tripoccurredduetoahighwaterlevelinthe"C"steamgenerator.
Theoperators stabilized theplantinHotShutdownutilizing theEmergency Operating Procedures.
TheHC"MFRVwasfoundtohaveshearedanti-rotation pinsandthestemdetachedfromthevalveplug.Thecauseforthevalvefailurewasattributed tohydraulic forcesandvibration actingovertime.TheMFRVswerealldisassembled, inspected andrepairedasnecessary.
ThiseventwasreportedtotheNuclearRegulatory Commission at0300hours,inaccordance with10CFR50.72.b.2.ii.
Therewerenosafetyimplications tothepublicasaresultofthisevent.Thistypeofeventhaspreviously beenanalyzedasstatedintheUpdatedFinalSafetyAnalysisReport,Section15.1.2,"Feedwater SystemMalfunctions CausinganIncreaseInFeedwater Flow".8903220424 8903i4$)PDRADOCK05000412SPNU  


NRCForm3SSA(943)LICENSEEEENTREPORTILER)TEXTCONTINUATIONU.S.NUCLEARRFOULATORYCOMMISSIONAPPROVEDOMBNO.3150-CI04EXPIRES:8/3)/88FACILITYNAME<<IDOCKETNUMBER)2ILERNUMBER)8)i+:SEQUENTIALSFINUMS8rrRFVISIONNUMBERPAGE)3)BeaverValleyPowerStation,Unit2ppppp412TEXT///rrroroH>>co/rroqo/rod.o>>odd/I/orM/HRCForm36548l<<7)890030002QF04DESCRIPTIONOn2/12/89,withtheUnitinPowerOperation(OperatingMode1),Operationspersonnelwerereducingreactorpowerfrom90%to50<aspartofEndofCoreLifeprograms.PriortotheOperatingcrewassumingtheshiftat2300hourson2/11/89,the<<B<<MainFeedwaterRegulatingValve(MFRV)hadpreviouslyexhibitederraticvalvecontrolforsteamgeneratorwaterlevel.The<<B<<MFRVwasintheautomaticmode,however,thevalvewasnotcontrollingsmoothly.At0048hours,operatorsnoticederraticoperationofthe<<C<<MFRV.At0108hours,atapproximately554power,the<<A<<MainFeedwaterPumpwasshutdown.At0120hours,thewaterlevelinthe<<C<<steamgeneratorincreasedtothehigh-highlevelsetpoint(75%)causing.aturbinetripandfeedwaterisolationsignal.Theturbinetripcausedareactortrip,sincereactorpowerwasabovethetrippermissiveof49'.Thefeedwaterisolationsignalcausedthefollowingactionstooccur:1)tripoftherunningmainfeedwaterpump,2)auto-startoftheauxiliaryfeedwaterpumps,and3)closureofthemainfeedwaterregulatingvalvesandbypassvalves.Followingthereactortrip,theoperatorsutilizedtheEmergencyOperatingProcedures(E-0"ReactorTriporSafetyInjection<<andES-0.1"ReactorTripResponse")tostabilizetheplantinHotStandby(OperatingMode3).APPARENTCAUSEOFTHEEVENTThecauseforthiseventwasattributedtothefailureofthe<<C<<Main.FeedwaterRegulatingValve(2FHS*FCV498).ThisvalveisaCopes-Vulcan,ModelNo.D-100-160,PartNo.16-FA37RG.Thevalvefailurewasattributedtothehydraulicforcesandvibration,whichovertime,mechanicallyexcitethevalve,damagingtheanti-rotationcageslots,plugguides,retainingpinsandvalvestem.The<<B<<MainFeedwaterRegulatingValvewasfoundtohavedamagedanti-rotationpins.Nr)CFORM300AIS83)'U.S~CPCI)988-33<')09000)0  
NRCForm3SSA(943)LICENSEEEENTREPORTILER)TEXTCONTINUATION U.S.NUCLEARRFOULATORY COMMISSION APPROVEDOMBNO.3150-CI04 EXPIRES:8/3)/88FACILITYNAME<<IDOCKETNUMBER)2ILERNUMBER)8)i+:SEQUENTIAL SFINUMS8rrRFVISIONNUMBERPAGE)3)BeaverValleyPowerStation,Unit2ppppp412TEXT///rrroro H>>co/rroqo/rod.
o>>odd/I/orM/HRC Form36548l
<<7)890030002QF04DESCRIPTION On2/12/89,withtheUnitinPowerOperation (Operating Mode1),Operations personnel werereducingreactorpowerfrom90%to50<aspartofEndofCoreLifeprograms.
PriortotheOperating crewassumingtheshiftat2300hourson2/11/89,the<<B<<MainFeedwater Regulating Valve(MFRV)hadpreviously exhibited erraticvalvecontrolforsteamgenerator waterlevel.The<<B<<MFRVwasintheautomatic mode,however,thevalvewasnotcontrolling smoothly.
At0048hours,operators noticederraticoperation ofthe<<C<<MFRV.At0108hours,atapproximately 554power,the<<A<<MainFeedwater Pumpwasshutdown.
At0120hours,thewaterlevelinthe<<C<<steamgenerator increased tothehigh-high levelsetpoint(75%)causing.aturbinetripandfeedwater isolation signal.Theturbinetripcausedareactortrip,sincereactorpowerwasabovethetrippermissive of49'.Thefeedwater isolation signalcausedthefollowing actionstooccur:1)tripoftherunningmainfeedwater pump,2)auto-start oftheauxiliary feedwater pumps,and3)closureofthemainfeedwater regulating valvesandbypassvalves.Following thereactortrip,theoperators utilizedtheEmergency Operating Procedures (E-0"ReactorTriporSafetyInjection<<
andES-0.1"ReactorTripResponse"
)tostabilize theplantinHotStandby(Operating Mode3).APPARENTCAUSEOFTHEEVENTThecauseforthiseventwasattributed tothefailureofthe<<C<<Main.Feedwater Regulating Valve(2FHS*FCV498).
ThisvalveisaCopes-Vulcan, ModelNo.D-100-160, PartNo.16-FA37RG.
Thevalvefailurewasattributed tothehydraulic forcesandvibration, whichovertime,mechanically excitethevalve,damagingtheanti-rotation cageslots,plugguides,retaining pinsandvalvestem.The<<B<<MainFeedwater Regulating Valvewasfoundtohavedamagedanti-rotation pins.Nr)CFORM300AIS83)'U.S~CPCI)988-33<'
)09000)0  


NRCForm366A194)3)LICENSEEENTREPORT(LERITEXTCONTINUAONU.S.NUCLEARREGULATORYCOMMISSIONAPPROVEDOMBNO.3160&)04EXPIRES:8/31/88FACILITYNAME(1)DOCKETNUMBER(2)YEARLERNUMBER(6)SEQUENTIAL+"'2REVISIONNVM8ER):.1NUMSSRPAGE(3)BeaverValleyPowerStation,Unit2osooo41289TEXT/lfmorospinto/4rtr)o/rod,ototddr)/ono/IVRCForm3664'4/OS)0030003oF04CORRECTIVEACTIONSThefollowingcorrectiveactionsweretakenasaresultofthisevent:Immediate:1).OperationspersonnelutilizedtheEmergencyOperatingProcedurestostabilizetheplantinHotStandby.2).Themainfeedwaterregulatingvalvesweredisassembledandinspected.Theanti-rotationpinswerereplacedonallmainfeedwaterregulatingvalves.Long-term:AnEngineeringMemorandumhasbeengeneratedrequestingEngineeringtoidentifyanactuatorandvalvedesignwhichwilleliminatethemainfeedwaterregulatingvalveproblemsduetothehydraulicforcesandvibrationwhichovertime,progressivelydamagethevalves.2).AllthreesteamgeneratorswillbeinspectedduringtheFirstRefuelingOutageforpotent'iallooseobjects.SAFETYIMPLICATIONSTherewerenosafetyimplicationstothepublicasaresultofthisevent.ThistypeofeventhaspreviouslybeenanalyzedasstatedintheUpdatedFinalSafetyAnalysisReport(UFSAR),Section15.1.2,"FeedwaterSystemMalfunctionsCausinganIncreaseinFeedwaterFlow".Additionally,alltherequiredEngineeredSafetyFeatures(ESF)systemcomponentsactuatedasfollowsasaresultofthesteamgeneratorhigh-highwaterlevelcondition1).Turbinetrip,causingareactortripbecausereactorpowerwasgreaterthantheP-9trippermissive,2).Feedwaterfollowing:Isolation(FWI)signal,causingtheNRCFORM34OA(94)3)A).Tripoftherunningmainfeedwaterpump,B).Automaticstartoftheauxiliaryfeedwaterpumps2FWE*P22,23Aand23B),C).Closureofthemainfeedwaterregulatingvalvesandbypassvalves.~V.S.CPOI)988-920-889~OOOTO  
NRCForm366A194)3)LICENSEEENTREPORT(LERITEXTCONTINUAONU.S.NUCLEARREGULATORY COMMISSION APPROVEDOMBNO.3160&)04EXPIRES:8/31/88FACILITYNAME(1)DOCKETNUMBER(2)YEARLERNUMBER(6)SEQUENTIAL
+"'2REVISIONNVM8ER):.1NUMSSRPAGE(3)BeaverValleyPowerStation,Unit2osooo41289TEXT/lfmorospinto/4rtr)o/rod, ototddr)/ono/IVRC Form3664'4/OS)0030003oF04CORRECTIVE ACTIONSThefollowing corrective actionsweretakenasaresultofthisevent:Immediate:
1).Operations personnel utilizedtheEmergency Operating Procedures tostabilize theplantinHotStandby.2).Themainfeedwater regulating valvesweredisassembled andinspected.
Theanti-rotation pinswerereplacedonallmainfeedwater regulating valves.Long-term:
AnEngineering Memorandum hasbeengenerated requesting Engineering toidentifyanactuatorandvalvedesignwhichwilleliminate themainfeedwater regulating valveproblemsduetothehydraulic forcesandvibration whichovertime,progressively damagethevalves.2).Allthreesteamgenerators willbeinspected duringtheFirstRefueling Outageforpotent'ial looseobjects.SAFETYIMPLICATIONS Therewerenosafetyimplications tothepublicasaresultofthisevent.Thistypeofeventhaspreviously beenanalyzedasstatedintheUpdatedFinalSafetyAnalysisReport(UFSAR),Section15.1.2,"Feedwater SystemMalfunctions CausinganIncreaseinFeedwater Flow".Additionally, alltherequiredEngineered SafetyFeatures(ESF)systemcomponents actuatedasfollowsasaresultofthesteamgenerator high-high waterlevelcondition 1).Turbinetrip,causingareactortripbecausereactorpowerwasgreaterthantheP-9trippermissive, 2).Feedwater following:
Isolation (FWI)signal,causingtheNRCFORM34OA(94)3)A).Tripoftherunningmainfeedwater pump,B).Automatic startoftheauxiliary feedwater pumps2FWE*P22, 23Aand23B),C).Closureofthemainfeedwater regulating valvesandbypassvalves.~V.S.CPOI)988-920-889
~OOOTO  


NRCForm388A(94)3)LICENSEEENTREPORTILER)TEXTCONTINUAONV.S.NUCLEARREGULATORYCOMMISSIONAPPROVEDOMBNO.3)50&)04EXPIRES:8/31/88FACILITYNAME(I)DOCKETNUMBER(2)LERNUMBER(8)YEARggSEOUENTIALPP?rNUMBER.Rrr.REvrsKINNUMBERPAGE(3)8eavergallePowerStation,Unit2osooo412TEXTIIImoroZ>>oo/4re/rr/rod,IrooEdcNane/HRC%%dmr36849/lll)890030004OF04Inaddition,theNuclearSteamSystemSupplier(NSSS)hasevaluatedtheutility'sengineeringinterpretationoftheSteamGeneratorParametricLooseObjectLicensingReport(WCAP-12101),whichaddressedthesafetysignificanceofthepotentialloosepart(anti-rotationpinfrom2FWS*FCV498)whichcouldbetrappedinthe"C"steamgeneratortubesheetannulus.Itwasconcludedthattheestimatedtimerequiredforthelooseobjecttowearintoatubetotheminimumallowablewallthickness,is2.4years.TheNSSSconcurredwiththissafetyevaluationjustifyingcontinuedoperationoftheremainingoperatingcycle.REPORTABILITYThiseventwasreportedtotheNuclearRegulatoryCommissionat0300hoursinaccordancewith10CFR50.72.b.2.ii.Thiswrittenreportisbeingprovidedinaccordancewith10CFR50.73.a.2.iv,asaneventinvolvingareactorprotectionsystem(RPS)orengineeredsafetyfea'tures(ESF)systemactuation.PREVIOUSOCCURRENCESTherehavebeennopreviousLicenseeEventReportsissuedonthistypeofevent/equipmentfailureatBeaverValleyPowerStationUnit2.NRCFORM388Al94)3)AU.S.GPOrIOSSSSBSSPI)0r)10  
NRCForm388A(94)3)LICENSEEENTREPORTILER)TEXTCONTINUAONV.S.NUCLEARREGULATORY COMMISSION APPROVEDOMBNO.3)50&)04EXPIRES:8/31/88FACILITYNAME(I)DOCKETNUMBER(2)LERNUMBER(8)YEARggSEOUENTIAL PP?rNUMBER.Rrr.REvrsKINNUMBERPAGE(3)8eavergallePowerStation,Unit2osooo412TEXTIIImoroZ>>oo/4re/rr/rod, IrooEdcNane/HRC
%%dmr36849/lll)890030004OF04Inaddition, theNuclearSteamSystemSupplier(NSSS)hasevaluated theutility's engineering interpretation oftheSteamGenerator Parametric LooseObjectLicensing Report(WCAP-12101),
whichaddressed thesafetysignificance ofthepotential loosepart(anti-rotation pinfrom2FWS*FCV498) whichcouldbetrappedinthe"C"steamgenerator tubesheet annulus.Itwasconcluded thattheestimated timerequiredforthelooseobjecttowearintoatubetotheminimumallowable wallthickness, is2.4years.TheNSSSconcurred withthissafetyevaluation justifying continued operation oftheremaining operating cycle.REPORTABI LITYThiseventwasreportedtotheNuclearRegulatory Commission at0300hoursinaccordance with10CFR50.72.b.2.ii.
Thiswrittenreportisbeingprovidedinaccordance with10CFR50.73.a.2.iv, asaneventinvolving areactorprotection system(RPS)orengineered safetyfea'tures (ESF)systemactuation.
PREVIOUSOCCURRENCES TherehavebeennopreviousLicenseeEventReportsissuedonthistypeofevent/equipment failureatBeaverValleyPowerStationUnit2.NRCFORM388Al94)3)AU.S.GPOrIOSSSSBSSPI)0r)10  


gled~DuquesneltNuclearGroupP,O,Box4ShippingporhPA15077~TelephOne(412)393-6000March14,1989ND3SPM:0422BeaverValleyPowerStation,UnitNo.2DocketNo.50-412,LicenseNo.NPF-73LER89-003-00UnitedStatesNuclearRegulatoryCommissionDocumentControlDeskWashington,DC20555Gentlemen:InaccordancewithAppendixA,BeaverValleyTechnicalSpecifications,thefollowingLicenseeEventReportissubmitted:LER89-003-00,10CFR50.73a.2.iv,"ReactorTripDuetoMainFeedwaterRegulatingValveFailure".Verytrulyyours,T.P.NoonanPlantManagervhyAttachment  
gled~DuquesneltNuclearGroupP,O,Box4Shippingporh PA15077~TelephOne (412)393-6000March14,1989ND3SPM:0422 BeaverValleyPowerStation,UnitNo.2DocketNo.50-412,LicenseNo.NPF-73LER89-003-00 UnitedStatesNuclearRegulatory Commission DocumentControlDeskWashington, DC20555Gentlemen:
Inaccordance withAppendixA,BeaverValleyTechnical Specifications, thefollowing LicenseeEventReportissubmitted:
LER89-003-00, 10CFR50.73a.2.iv,"ReactorTripDuetoMainFeedwater Regulating ValveFailure".
Verytrulyyours,T.P.NoonanPlantManagervhyAttachment  


March14,1989ND3SPM'0422PagetwoCC:Mr.WilliamT.RussellRegionalAdministratorUnitedStatesNuclearRegulatoryCommissionRegion1475AllendaleRd.KingofPrussia,PA19406C.A.Roteck,OhioEdisonMr.PeterTam,BVPSLicensingProjectManagerUnitedStatesNuclearRegulatoryCommissionWashington,DC20555J.Beall,NuclearRegulatoryCommission,BVPSSeniorResidentInspectorMr.AlexTimme,CAPCONuclearProjectsCoordinatorToledoEdisonINPORecordsCenterSuite15001100Circle75ParkwayAtlanta,GA30339G.E.Muckle,FactoryMutualEngineering,PittsburghMr.J.N.Steinmetz,OperatingPlantProjectsManagerMidAtlanticAreaWestinghouseElectricCorporationEnergySystemsServiceDivisionBox355Pittsburgh,PA15230AmericanNuclearInsurersc/oDottieSherman,ANILibraryTheExchangeSuite245270FarmingtonAvenueFarmington,CT06032Mr.RichardJanatiDepartmentofEnvironmentalResourcesP.O.Box206316thFloor,FultonBuilding*Harrisburg,PA17120Director,SafetyEvaluation&ControlVirginiaElectric6PowerCo.P.O.Box26666OneJamesRiverPlazaRichmond,VA23261  
March14,1989ND3SPM'0422 PagetwoCC:Mr.WilliamT.RussellRegionalAdministrator UnitedStatesNuclearRegulatory Commission Region1475Allendale Rd.KingofPrussia,PA19406C.A.Roteck,OhioEdisonMr.PeterTam,BVPSLicensing ProjectManagerUnitedStatesNuclearRegulatory Commission Washington, DC20555J.Beall,NuclearRegulatory Commission, BVPSSeniorResidentInspector Mr.AlexTimme,CAPCONuclearProjectsCoordinator ToledoEdisonINPORecordsCenterSuite15001100Circle75ParkwayAtlanta,GA30339G.E.Muckle,FactoryMutualEngineering, Pittsburgh Mr.J.N.Steinmetz, Operating PlantProjectsManagerMidAtlanticAreaWestinghouse ElectricCorporation EnergySystemsServiceDivisionBox355Pittsburgh, PA15230AmericanNuclearInsurersc/oDottieSherman,ANILibraryTheExchangeSuite245270Farmington AvenueFarmington, CT06032Mr.RichardJanatiDepartment ofEnvironmental Resources P.O.Box206316thFloor,FultonBuilding*Harrisburg, PA17120Director, SafetyEvaluation
&ControlVirginiaElectric6PowerCo.P.O.Box26666OneJamesRiverPlazaRichmond, VA23261  
,/}}
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LER 89-003-00:on 890212,noticed Erratic Operation of Main Feedwater Regulating Valve C & Turbine Trip/Reactor Trip Occurred Due to High Water Level in Steam Generator C.Caused by Valve Vibration & Hydraulic forces.W/890314 Ltr
ML18041A188
Person / Time
Site: Beaver Valley
Issue date: 03/14/1989
From: NOONAN T P
DUQUESNE LIGHT CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
LER-89-003, LER-89-3, ND3SPM:0422, ND3SPM:422, NUDOCS 8903220424
Download: ML18041A188 (14)
v • d • e


Text

ACCELERATED DISIKBUTION DEMONSTRA.TION SYSTEMREGULATINFORMATION DISTRIBUTION+STEM (RIDE)ACCESSION NBR:8903220424 DOC.DATE:

89/03/14NOTARIZED:

NODOCKETFACIL:50-4lg BeaverValleyPowerStation,Unit2,DuquesneLightC05000412AUTH.NAMEAUTHORAFFILIATION NOONANFT.P.

DuquesneLightCo.RECIP.NAME RECIPIENT AFFILIATION

SUBJECT:

LER89-003-00:on 890212,reactor trippedduetomainfeedwater regulating valvefailure.W/890314 ltr.W/8DISTRIBUTION CODE:IE22DCOPIESRECEIVED:LTR tENCLISIZE:TITLE:50.73LicenseeEventReport(LER),IncidentRpt,etc.NOTES:LPDR 2cysTranscripts.

LPDR2cysPDRDocuments.

Application forpermitrenewalfiled.05000412RECIPIENT IDCODE/NAME PDl-4LATAMFPINTERNAL:

ACRSMICHELSON ACRSWYLIEAEOD/DSP/TPAB ARM/DCTS/DAB NRR/DEST/ADE 8HNRR/DEST/CEB 8HNRR/DEST/ICSB 7NRR/DEST/MTB 9H.NRR/DEST/RSB 8ENRR/DLPQ/HFB 10NRR/DOEA/EAB 11NRR/DREP/RPB 10NUDOCS-ABSTRACT RES/DSIR/EIB RGN1FILE01EXTERNAL:

EGSGWILLIAMSFS HSTLOBBYWARDNRCPDRNSICMURPHYFG.A NOTES:COPIESLTTRENCL111111111111111111111111112211111144111'1122RECIPIENT IDCODE/NAME PD1-4PDACRSMOELLERAEOD/DOAAEOD/ROAB/DSP DEDRONRR/DEST/ADS 7ENRR/DEST/ESB 8DNRR/DEST/MEB 9HNRR/DEST/PSB 8DNRR/DEST/SGB 8DNRR/DLPQ/QAB 10NRR/DREP/RAB 10NRRJ3/SIB9AREGFjj02RES/DSR/FRAB FORDBLDGHOYFALPDRNSICMAYSFGCOPIESLTTRENCL112211221110111111111111111111111111NOZE'IOALL'RIDS"RICIPZEPIS:

PIZASEHELPUSIOIlEDUCE%ASTlCGKPACTIHEDCjCUNEÃZ CGÃIK)LDESKFROC'l-37(EXT.20079)%0EIZKBRXSYOURMHBHKHDISTBZBUTICN LIBTSFORDOC(IMENIS YOUDQHFTNEED<TOTALNUMBEROFCOPIESREQUIRED:

LTTR47ENCL46

NRCForm388(9.83)I(LICENSEEEVENTREPORTILER)U.S.NUCLEARREGULATORY COMMISSION APPROVEOOMBNO.31504104EXPIRES:8/31/88FACILITYNAMEIIITITLE(4)ReactorTripDuetoMainFeedwater Regulating ValveFailureDOCKETNUMBER(2)05000PAGE3/1OF0FVENTDATE(5)LERNUMBER(5)REPORTDATEI7)OTHERFACILI'TIFS INVOLVED(8)MONTHOAYYEARYEARSEGVENTIAL NVMSEAyh'.REVISION'AiNUMBERMONTHOAYYEARFACILITYNAMESDOCKETNUMBER(s) 0500021289890030003489N/A05000OPERATING MODE(SIPOWERLEYELP55(10)5?'PNryr'Q?y r'rc'yvynHXrg?e"@.gp.'0.402(bl 20.405(el(I i(i)20.405(el(1)(ii)20.405(eI)II(ii))20.405(~l(l)IIv)20.405(~l(1)(vl20A05(cl50.35(cl(II 50.35IcI(2)5073(el(2)li)d0.73(~l(2)(i/I50.73(e)(2I(iii)LICENSEECONTACTFORTHISLER(12)50.73(e)(2)(iv)50.73(~)(2)(v)50,73(~)(21(viil50.73(~)(2)(wii)IAI 50.73(~)12)(wii)IBI 50.73(~)(2)(rrl0THEREOUIREMENTS OF10CFR(I:/CheckoneormorcOItncIoliowrnP/

(11)THISREPORTISSUBMITTED PURSUANTT73.71(b)73.71IclOTHER/SpetiryInAprrreCtoe/owenriinTert,NIICForm366AINAMEMr.ThomasP.Noonan,PlantManagerTELEPHONE NUMBERAREACODE412643-125COMPLETEONELINEFOREACHCOMPONENT FAILUREOESCRIBEO INTHISREPORT(13)CAUSESYSTEMCOMPONENT MANUFAC.TURERREPORTABLE pCAUSESYSTEMCOMPONENT MANVFAC.TVRERXJBFCVC635Y$P:,".'SVPPLEMEN1'AL REPORTEXPECTFD(14)YES//Iycr,comp/etcEXPECTEDSU84IISSIOIY DATE/ABSTRACTILimrtto/400rpeccr./c,,epprovimeteiy

/i/teenr/npletortetyPcwrinen

/inn/l(d)EXPECTEDSU8MISSI0NDATE(15IMONTHOAYYEARNRCForm358(983)On2/12/89,withtheUnitinPowerOperation, apowerreduction from904reactorpowerto50%reactorpowerwasinprogressaspartofEndofCoreLifeprograms.

At0048hours,operators noticederraticoperation ofthe"C"MainFeedwater Regulating Valve(MFRV).Theoperators placedthe"C"MFRVinmanualtocontrolsteamgenerator level.At0108hoursatapproximately 55~reactorpower,the"A"MainFeedwater Pumpwasshutdowntoreducethepressuredifferential acrossthevalveallowingeasiervalvemovementandcontrol.At0120hours,aturbinetrip/reactor tripoccurredduetoahighwaterlevelinthe"C"steamgenerator.

Theoperators stabilized theplantinHotShutdownutilizing theEmergency Operating Procedures.

TheHC"MFRVwasfoundtohaveshearedanti-rotation pinsandthestemdetachedfromthevalveplug.Thecauseforthevalvefailurewasattributed tohydraulic forcesandvibration actingovertime.TheMFRVswerealldisassembled, inspected andrepairedasnecessary.

ThiseventwasreportedtotheNuclearRegulatory Commission at0300hours,inaccordance with10CFR50.72.b.2.ii.

Therewerenosafetyimplications tothepublicasaresultofthisevent.Thistypeofeventhaspreviously beenanalyzedasstatedintheUpdatedFinalSafetyAnalysisReport,Section15.1.2,"Feedwater SystemMalfunctions CausinganIncreaseInFeedwater Flow".8903220424 8903i4$)PDRADOCK05000412SPNU

NRCForm3SSA(943)LICENSEEEENTREPORTILER)TEXTCONTINUATION U.S.NUCLEARRFOULATORY COMMISSION APPROVEDOMBNO.3150-CI04 EXPIRES:8/3)/88FACILITYNAME<<IDOCKETNUMBER)2ILERNUMBER)8)i+:SEQUENTIAL SFINUMS8rrRFVISIONNUMBERPAGE)3)BeaverValleyPowerStation,Unit2ppppp412TEXT///rrroro H>>co/rroqo/rod.

o>>odd/I/orM/HRC Form36548l

<<7)890030002QF04DESCRIPTION On2/12/89,withtheUnitinPowerOperation (Operating Mode1),Operations personnel werereducingreactorpowerfrom90%to50<aspartofEndofCoreLifeprograms.

PriortotheOperating crewassumingtheshiftat2300hourson2/11/89,the<<B<<MainFeedwater Regulating Valve(MFRV)hadpreviously exhibited erraticvalvecontrolforsteamgenerator waterlevel.The<<B<<MFRVwasintheautomatic mode,however,thevalvewasnotcontrolling smoothly.

At0048hours,operators noticederraticoperation ofthe<<C<<MFRV.At0108hours,atapproximately 554power,the<<A<<MainFeedwater Pumpwasshutdown.

At0120hours,thewaterlevelinthe<<C<<steamgenerator increased tothehigh-high levelsetpoint(75%)causing.aturbinetripandfeedwater isolation signal.Theturbinetripcausedareactortrip,sincereactorpowerwasabovethetrippermissive of49'.Thefeedwater isolation signalcausedthefollowing actionstooccur:1)tripoftherunningmainfeedwater pump,2)auto-start oftheauxiliary feedwater pumps,and3)closureofthemainfeedwater regulating valvesandbypassvalves.Following thereactortrip,theoperators utilizedtheEmergency Operating Procedures (E-0"ReactorTriporSafetyInjection<<

andES-0.1"ReactorTripResponse"

)tostabilize theplantinHotStandby(Operating Mode3).APPARENTCAUSEOFTHEEVENTThecauseforthiseventwasattributed tothefailureofthe<<C<<Main.Feedwater Regulating Valve(2FHS*FCV498).

ThisvalveisaCopes-Vulcan, ModelNo.D-100-160, PartNo.16-FA37RG.

Thevalvefailurewasattributed tothehydraulic forcesandvibration, whichovertime,mechanically excitethevalve,damagingtheanti-rotation cageslots,plugguides,retaining pinsandvalvestem.The<<B<<MainFeedwater Regulating Valvewasfoundtohavedamagedanti-rotation pins.Nr)CFORM300AIS83)'U.S~CPCI)988-33<'

)09000)0

NRCForm366A194)3)LICENSEEENTREPORT(LERITEXTCONTINUAONU.S.NUCLEARREGULATORY COMMISSION APPROVEDOMBNO.3160&)04EXPIRES:8/31/88FACILITYNAME(1)DOCKETNUMBER(2)YEARLERNUMBER(6)SEQUENTIAL

+"'2REVISIONNVM8ER):.1NUMSSRPAGE(3)BeaverValleyPowerStation,Unit2osooo41289TEXT/lfmorospinto/4rtr)o/rod, ototddr)/ono/IVRC Form3664'4/OS)0030003oF04CORRECTIVE ACTIONSThefollowing corrective actionsweretakenasaresultofthisevent:Immediate:

1).Operations personnel utilizedtheEmergency Operating Procedures tostabilize theplantinHotStandby.2).Themainfeedwater regulating valvesweredisassembled andinspected.

Theanti-rotation pinswerereplacedonallmainfeedwater regulating valves.Long-term:

AnEngineering Memorandum hasbeengenerated requesting Engineering toidentifyanactuatorandvalvedesignwhichwilleliminate themainfeedwater regulating valveproblemsduetothehydraulic forcesandvibration whichovertime,progressively damagethevalves.2).Allthreesteamgenerators willbeinspected duringtheFirstRefueling Outageforpotent'ial looseobjects.SAFETYIMPLICATIONS Therewerenosafetyimplications tothepublicasaresultofthisevent.Thistypeofeventhaspreviously beenanalyzedasstatedintheUpdatedFinalSafetyAnalysisReport(UFSAR),Section15.1.2,"Feedwater SystemMalfunctions CausinganIncreaseinFeedwater Flow".Additionally, alltherequiredEngineered SafetyFeatures(ESF)systemcomponents actuatedasfollowsasaresultofthesteamgenerator high-high waterlevelcondition 1).Turbinetrip,causingareactortripbecausereactorpowerwasgreaterthantheP-9trippermissive, 2).Feedwater following:

Isolation (FWI)signal,causingtheNRCFORM34OA(94)3)A).Tripoftherunningmainfeedwater pump,B).Automatic startoftheauxiliary feedwater pumps2FWE*P22, 23Aand23B),C).Closureofthemainfeedwater regulating valvesandbypassvalves.~V.S.CPOI)988-920-889

~OOOTO

NRCForm388A(94)3)LICENSEEENTREPORTILER)TEXTCONTINUAONV.S.NUCLEARREGULATORY COMMISSION APPROVEDOMBNO.3)50&)04EXPIRES:8/31/88FACILITYNAME(I)DOCKETNUMBER(2)LERNUMBER(8)YEARggSEOUENTIAL PP?rNUMBER.Rrr.REvrsKINNUMBERPAGE(3)8eavergallePowerStation,Unit2osooo412TEXTIIImoroZ>>oo/4re/rr/rod, IrooEdcNane/HRC

%%dmr36849/lll)890030004OF04Inaddition, theNuclearSteamSystemSupplier(NSSS)hasevaluated theutility's engineering interpretation oftheSteamGenerator Parametric LooseObjectLicensing Report(WCAP-12101),

whichaddressed thesafetysignificance ofthepotential loosepart(anti-rotation pinfrom2FWS*FCV498) whichcouldbetrappedinthe"C"steamgenerator tubesheet annulus.Itwasconcluded thattheestimated timerequiredforthelooseobjecttowearintoatubetotheminimumallowable wallthickness, is2.4years.TheNSSSconcurred withthissafetyevaluation justifying continued operation oftheremaining operating cycle.REPORTABI LITYThiseventwasreportedtotheNuclearRegulatory Commission at0300hoursinaccordance with10CFR50.72.b.2.ii.

Thiswrittenreportisbeingprovidedinaccordance with10CFR50.73.a.2.iv, asaneventinvolving areactorprotection system(RPS)orengineered safetyfea'tures (ESF)systemactuation.

PREVIOUSOCCURRENCES TherehavebeennopreviousLicenseeEventReportsissuedonthistypeofevent/equipment failureatBeaverValleyPowerStationUnit2.NRCFORM388Al94)3)AU.S.GPOrIOSSSSBSSPI)0r)10

gled~DuquesneltNuclearGroupP,O,Box4Shippingporh PA15077~TelephOne (412)393-6000March14,1989ND3SPM:0422 BeaverValleyPowerStation,UnitNo.2DocketNo.50-412,LicenseNo.NPF-73LER89-003-00 UnitedStatesNuclearRegulatory Commission DocumentControlDeskWashington, DC20555Gentlemen:

Inaccordance withAppendixA,BeaverValleyTechnical Specifications, thefollowing LicenseeEventReportissubmitted:

LER89-003-00, 10CFR50.73a.2.iv,"ReactorTripDuetoMainFeedwater Regulating ValveFailure".

Verytrulyyours,T.P.NoonanPlantManagervhyAttachment

March14,1989ND3SPM'0422 PagetwoCC:Mr.WilliamT.RussellRegionalAdministrator UnitedStatesNuclearRegulatory Commission Region1475Allendale Rd.KingofPrussia,PA19406C.A.Roteck,OhioEdisonMr.PeterTam,BVPSLicensing ProjectManagerUnitedStatesNuclearRegulatory Commission Washington, DC20555J.Beall,NuclearRegulatory Commission, BVPSSeniorResidentInspector Mr.AlexTimme,CAPCONuclearProjectsCoordinator ToledoEdisonINPORecordsCenterSuite15001100Circle75ParkwayAtlanta,GA30339G.E.Muckle,FactoryMutualEngineering, Pittsburgh Mr.J.N.Steinmetz, Operating PlantProjectsManagerMidAtlanticAreaWestinghouse ElectricCorporation EnergySystemsServiceDivisionBox355Pittsburgh, PA15230AmericanNuclearInsurersc/oDottieSherman,ANILibraryTheExchangeSuite245270Farmington AvenueFarmington, CT06032Mr.RichardJanatiDepartment ofEnvironmental Resources P.O.Box206316thFloor,FultonBuilding*Harrisburg, PA17120Director, SafetyEvaluation

&ControlVirginiaElectric6PowerCo.P.O.Box26666OneJamesRiverPlazaRichmond, VA23261

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