ML17164A888

Rev 0 to EC-RISK-1065, Assessment of Common Cause Failure Probabilities for Use in Susquehanna Ipe.

ML17164A888
Person / Time
Site:	Susquehanna
Issue date:	06/22/1998
From:	KUKIELKA C A PENNSYLVANIA POWER & LIGHT CO.
To:
Shared Package
ML17164A884	List: ML17164A887 ML17164A888
References
EC-RISK-1065, EC-RISK-1065-R, EC-RISK-1065-R00, NUDOCS 9811180050
Download: ML17164A888 (116)

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NUCLEARENGINEERINGCALCULATION/STUDYCOVERSH/ETandNUCLEARRECORDSTRANSMITTALSHEETFile¹R2-11.Page1ofTotalPages~2.TYPE:CALCD3.NUMBER:EC-RISK-1065>4.REVISION:05.TRANSMITTAL¹:">6.UNIT:3>7.QUALITYCLASS:N'>8.DISCIPLiNE:3~9,DESCRIPTION:AssessmentofCommonCauseFailureProbabilitiesforUseintheSusquehannaIPE.SUPERSEDEDBY:EC-N/A13.Application:NA'>14AffectedSystemsr'fN/Athenline15ismandatory.">15.NON-SYSTEMDESIGNATOR:NA10.AlternateNumber:NA12:ComputerCodeorModelused:NARISK11.Cycle:NAFicheQDiskgAm't-IfN/Athenline14ismandatory16.AffectedDocuments:17.

References:

QSARChangeReq'd18.Equipment/Component¹:19.DBDNumber:%20.PREPAREDBYPrintNamSignatrCasimirA.kiel>22.APOVEDBY/ATEPrintNameF.G.utlerSignature>21.REVIEWEDBYPrintNameEricJebsenSignature23.ACCEPTEDBYPP8L/DATEPrintNameSignatureTOBECOMPLETEDBYNUCLEARRECORDSNR-DCSSIGNATURE/DATEADDANEWCOVERPAGEFOREACHREVISIONFORMNEPM-QA-0221-1,Revision2'erifiedFields>REQUIREDFIELDS98i'fi80050'rr80709tORaOOCXOSOOOS87PPDR l

TABLEOFCONTENTSTOPICPAGEI.TreatmentofCommonCauseFailureIIMethodforEstimatingCommonCauseFailures111.1CommonCauseFailuresofDieselGeneratorsIII.2CommonCauseFailuresofPumps.III.3CommonCausefailureofValves.IV.CommonCauseProbabilitiesAssignedtoOtherSystemsA.IDieselsA.2MotorDrivenPumpsA.3SummaryofRHRSOORsandCRs.

I.TreatmentofCommonCauseFailureCommonCauseFailures(CCF)ofsystemsandcomponentsweretreatedintheSusquehannaIPE.ThesignificantCCFsaresummarizedinVolume6oftheIPE'.Additionally,commonfailuresofECCSactuationinstrumentation(RPVwaterlevel,RPVpressureanddrywellpressure)wereincludedinthestudy.Thetreatmentofcommoncausefailurewasre-examinedinresponsetoquestionsraisedbytheNRCintheirSERconcerningthetreatmentofcommoncausefailure.There-examinationconsistedofthreeparts.First,commoncausefailureofmultipleinstrumentscausedbyInstrumentandControlTechnicianwasassessedat10.Thisestimatewasre-examined.TheinitialtreatmentofinstrumentationwasbaseduponGEanalysisperformedtoextendSurveillanceTestIntervals(STIs)andAllowedOutageTimes(AOTs).TheGEworkisbaseduponTHERPanalysisofthemultipleinstrumentationcalibration.Thisworkwasre-evaluatedbyre-examiningtheSusquehannacalibrationproceduresandthemanagementcontrolsinplacetoidentifysystematicmis-calibrationofinstrumentation.Surveillancerecordsandinstrumentfailuredatawasreviewtodetermineifacommoncausefootprintwasdiscernibleinthedata.FinallyandindependentTHERPcalculationwasperformedusingtheASEPmethod.Thisworkconfirmedtheoriginalassessmentoftheinstrumentmis-calibration.Second,areviewwasperformedtodetermineifgenericcommoncausefailureratesappliedtoSusquehannabaseduponstatisticalevaluation.Thisevaluationwaslimitedtothestationbatteries.Finally,anevaluationofequipmentwhichhasexperiencedalargenumberofmultipledemandsandnomultiplefailureswasexamined.Thissituationwastreatedingreaterdetailtoobtainamoreaccurateestimateoftheofthecommoncausefailureprobability.TheTHERPanalysisisaddressedinaseparatecalculation.Thiscalculationaddressesthesecondandthirditems.ThefollowingprobabilitiesofmultiplecomponentfailuresareprovidedfortheIPE.IIMethodforEstimatingCommonCauseFailuresThemethodusedtodeveloptheprobabilityofmultiplecomponentfailuresduetoacommoncauseisbasedupontheworkinNUREG/CR-4780,ProceduresforTreatingCommonCauseFailuresinSafetyandReliabilityStudies.ThePfactormethodisappliedtoestimatethefailureofredundantcomponentsgivenfailureofthefirst.ThePfactorisdefinedtobe:

P=conditionalprobabilitythatacauseofacomponentfailurewillbesharedbyoneormoreadditionalcomponents,giventhataspecificcomponenthasfailed,orQhlQ.,+QiEq.1Here,QistheprobabilityofmultiplefailuresQiistheprobabilityofasinglefailure.Qiscomputedusingthefollowingequation;nhl.Q=-'lhlEq.2n=thenumberoftimesmcomponentsofinterestfail,N=thenumberoftestingepisodesofmcomponentsofinterest.IfthenumberofdemandsNisunknown,thenitisestimatedfromthenumberoftestusingthefollowingformula;non-staggeredtesting:Eq.3staggeredtesting:Nm=Ng+(m-l)nm,Eq.4Here,m=thenumberofcomponentsinthetestepisode.k=thenumberofsingletestepisodes.IfthenumberofdemandsisknownthenfollowingformulaareusedforcomputingNm;non-staggeredtesting:N=NumEq.5 staggeredtestingN=NDEq.6Inthecaseofnofailures,thebinomialdistribution'isusedtoestimatethemedianfailureprobability.Uncertaintyboundsareassumedtobelognormallydistributedwiththeupperboundbeingcomputedusingthebinomialdistributionat95%confidence.Theerrorfactoriscomputedusingtheupperboundandthemedian.Theerrorfactorisusedtocomputethelowerbound.Theseformulaareappliedtoestimatetheprobabilityofmultiplefailureforthevariouscomponents.III.1CommonCauseFailuresofDieselGenerators.Commoncauseofdieselsgeneratorswasnotincludedinthe1991IPE.Thedieselgeneratordatawerereexaminedusingthecommoncausefailuremodeldescribedabove.Twocaseswereconsidered:failureoftwodieselsandfailureofall4diesels.ThedataforthedieselwasobtainedfromtheEC-RISK-0503andsubsequentdatawasobtainedfromdieselstartrecordsandfromConditionReports.ThestartrecordsandconditionreportsareincludedinAppendixA.ThisdataissummarizedinthefollowingTable.TableIDieselGeneratorStartingandFailureDataTimePeriodDemandsSingleFailureDoubleFailuresTripleFailuresQuadrupleFailures6/82-12/891/90-12/921/93-6/977/97-3/98Total300628843072'7967221751100000SEstimatedfrom1/93through6/97.Thcarc18quartersbctwccn1/93through6/97inclusive.Onthcavcragcthereare430demands/18quarters~24test/quarter.Therearc12quartersbetween1/90&12/92inclusiveor12x24288.Therare3quartersbctwce7/97&3/98inclusiveor24x372.ThedieselsaretestedunderastaggeredtestingstrategyperTechnicalSpecifications.Ifadieselfails,theotherenginesarestartedtoverifythattheyareoperable.ThereforeEquation6isusedtodeterminethenumberofsingleandmultipledemands.ThenumberoffailuresisspecificinTableIaswell.InthecaseofQuadruplefailurenofailuresarereported.InthiscasethemedianfailureprobabilityisdeterminedusingthebinomialdistributionwithNm=3796trialsandzerofailures.TheresultsofthesecalculationsarepresentedinTableII.

TableIIDieselGeneratorFailureProbabilitiesLowerBoundMedianMeanUpperBoundSingleDiesel1.66E-021.99E-021.98E-022.39E-02DoubleFailures1.75E-032.90E-032.90E-034.80E-03QuadrupleFailures4.24E-051.83E-042.72E-047.90E-04SimilardatahasnotbeencompiledfortheSusquehannabatteries.ThereforetheNUREG1150valueswereusedforthebatteries;III.2CommonCauseFailuresofPumps.TheECCSsystemsandthesystemsthatsupporttheiroperationaretestedperiodicallyonastaggeredbasispertheplantTechnicalSpecifications.IfapumpfailureoccurstestoftheremainingpumpsisnotstrictlyrequiredperTechnicalSpecifications.Reviewingthedatashowsthatthemajorityofthepumpstartsareinresponsetotheneedforsuppressionpoolcooling.Shouldapumpfailtostart,subsequentpumpswouldbestartedtosatisfytheneedforsuppressionpoolcooling.Thereforetheassumptionsassociatedwiththestaggeredteststrategyareappliedtothemotordrivenpumpdata.ThepumpstartandfailuredataissummarizedinTableIII.Therewerenocasesofmultiplepumpfailures.Adoublefailureisassignedtothetwopumpfailurecasetoconservativelyaccountforadoublepumpfailureprecursor.AfailureofasingleESWpumpoccurredduetoendbellerosion.Theerosionwascausebyoperatingthesepumpsatverylowflows.Inspectionoftheotherpumpsidentifiedendbellerosion,thoughtoamuchlessdegree.InfactthepumpswerestilloperableandpassedtheASMEtest.Howeverafailureoftwopumpsisincludedtoaccountfortheprecursor.TableIVpresentsrunhoursandfailuretorundata.Commoncausefailuretorunisnottreatedduetheimplausibilityoftwopumpsfailingatthesametimewhileoperating,unlessthefailureisattributedtoanexternalevent.DetailedinformationisprovidedinAppendixA.

TableIIIPumpDemandandFailureDataSystemRHRCSRHRSWESWTotalTotal343215533606542214012SingleDoubleMultiple00000010191Usingthisdata,afailureprobabilitywascomputedforeachsystem'spumpsandfortheaggregate.TheresultsofthesecalculationsareshowninTableIV,TableIVFailureProbabilityofPumpsProbabilityLowerMedianMeanUpperErrorFactor5.7E-041.4E-031.7E-033.5E-032.5ESW9.6E-041.6E-031.7E-032.7E-031.7RHRSW1.4E-032.4E-032.5E-034.0E-031.7CoreSpray1.0E-044.4E-046.6E-041.9E-034,4Aggregate9.9E-041.4E-031.4E-032.0E-031.4Withexceptionofthecorespraypumps,thefailureratesofthesespumpsaresupriseinglyclose.Thereforeallpumpswillbeassignedthesameaggregatefailureprobability.Examiningthemeanandboundsofthecorespraypumpsonecouldconcludethattheyarefromamorereliablestatisticalpopulation.Howevertheyarebeingassignedtheaggregatefailureprobabilitywhichisconservative.Thecommoncausefailureprobabilityformultiplepumpstostartwascomputedusingtheassumptionsassociatedwithstaggeredtestingandtheaboveaggregateddata.TheseresultsarereportedinTableV.Thesevaluesaretreatedasmeanvaluesforthesingleanddoublefailures.Theboundareestimatedusingthebinominaldistribution.Thisdataisusedtocalculatethelognormalmedianandlowerbound.Therearenoquadruplepumpfailures.Thereforethebinomialdistributionisusedtoestimatethemedianandbound.Theseestimatesarethenusedtoestimatethemeanassumingthelognormaldistribution.

TableVCommonCauseFailureProbabilitiesforPumpsProbabilitySingleDoubleQuadLowerMedianMeanUpper8.2E-041.3E-031.4E-032.1E-032.6E-051.2E-047.1E-053.4E-043.8E-064.9E-057.3E-052.1E-04ErrorFactor1.62.844Failuretorundatavalueswerealsocomputedforthepumpsidentifiedabove.Theruntimeandfailuredataweretaken&omthesamedatasourcesasthestartdata.ThisdataisprovidedinTablesVITablesVII.TableVIPumpRunHoursSystemRHRCSRHRSWESWTotalTotal616502841870774130685291527RunFailuresTableVIIFailuretoRunProbabilityLowerMedianMeanUpperErrorFactor1.4E-068.1E-061.4E-054.9E-056.0ESW8.3E-062.6E-053.1E-057.8E-053.1RHRSW1.2E-067.1E-061.2E-054.2E-056.0CoreSpray2.9E-061.8E-053.0E-051.1E-046.0Aggregate3.7E-061.1E-051.4E-053.5E-053.1 III.3CommonCausefailureofValves.Commoncausefailureprobabilityformultiplevalvesisbasedstaggeredtesting.Themajorityofthedemandsareforsuppressionpoolcooling.Failureofavalvetoopenwouldresultintheinabilitytooperatesuppressionpoolingusingthisparticulardivision.ShouldthisoccuretheoperatorwouldinitiatetheredundantloopofRHR.TheconditionalprobabilitieswerederivedfromRHRvalvefailuredata.Areviewofplantdata,showsthattheRHRvalveswerestrokedabout11,400times.EighteenRHRvalvefailureswereidentifiedintheplantrecords.Nomultiplevalvefailurewereidentified.Usingthisdatathefailureprobabilityiscomputedwithuncertaintybounds.Theboundsarederived&omthePoissondistribution.ThemedianiscomputedbyapplyingthemeanandtheboundsgeneratedusingthePoissontothelognormaldistribution.lower=9.4x,median=1.5x10mean=1.6x10upper=2.5x10.Sincenomultiplefailuresofthevalveswereobserved,0.5doublefailuresareassignedtocomputetheconditionalprobability(two/one):p(two/one)=0.5/18=2.3x10andtheprobabilityoftwovalvesfailingbecomes:lower=1.2x10median=3.5x10mean=4.4x10upper=1.1x10.IV.CommonCauseProbabilitiesAssignedtoOtherSystemsCommoncauseprobabilitieswereassignedtoothercomponents.Theassignmentsweremadebasedoneither;otherexistingdataorscreeningvalues.ThesevaluesareprovidedinTableVIII.

TableVIIICommonCauseFailureRatesofOtherComponentsEventNameDescriptionlowermeanupperTSDVFailureoftwoscramdischargevolumes.Singlebased4.8E-8uponNUREG0460,P0.01baseduponPP&LreportsNPE-89-003&RA-1-NA-0061.8E-74.4E-7SRV1&SRVIINADSSRVMCLPPCCFSLCPFailureofsecondandthirdgivenfirst.P=1.0NUREG2728Failureof10non-ADSASMEcodesafetyreliefvalvesgivenfailureoffailureof6ADSvalves.P=0.5assumed.Failureoflowpressurepermissivecircuit.NUREG1150valueused.CommoncausefailureofSLCSpumps.AssumedP=0.05baseduponotherpumpdata.2.6E-60.131.4E-55.6E-61.1E-50.55.3E-41.8E-42.4E-510.1.9E-35.6E-4CCFTDPCommonCausefailureofHPCI&RCICNPE-86-003&NUREG/CR-2497CCFCTVFailureofbothdivisionsofRHR/IQIRSWcrosstievalves0.00051.2E-51.9E-34.4E-50.0045I.IEA References'usquehannaIPEVolumeVISupplementalInformation,Section3.Deccmbcr19912AnalysisofComponentOutageandFailureDataforthcSusquehannaIPE.EC-RISK@503,RcvITechnicalSpecificationImprovementMethodology(withDemonstrationforBWRECCSActuationInstrumentation)PartINEDE-30936P-A,ClassIll,Dec.19884HumanErrorProbabilityforInstrumentCalibrationUsingASEPMethod,PP&LRecordedcaclulationEC-RISK-10645ProceduresforTreatingCommonCauseFailuresinSafetyandReliabilityStudies,NUREG/CR<780VolumnsI&26EC-RISK-0503Rcv.I;EC-RISK-1060,AcccptanccNumbersforRiksSignificantSystemStructuresandComponents,CzyszandKukielka;&SOORs AppendixASupportingDataA.1DieselsA.2MotorDrivenPumpsA.3SummaryofRHRSOORsandCRs.

A.1DieselGeneratorData

Kukielka,CasimirFrom:To:

Subject:

Date:D'Angelo,VioletR.Kukielka,CasimirRE:DieselStartsMonday,September29,199710:42AMForD/GA,8,C,D5minat1000KW10minat2000KW10minat3000KW210minat4000KW15minat500KWforcooldownbeforeS/DForD/GE5minat1375KW10minat2750KW220minat4000KW15minat500KWforcooldownbeforeS/Drg5From:Kukielka,CasimirTo:D'Angelo,VioletR.

Subject:

RE:DieselStartsDate:Friday,September26,19974:33PMHaViolet,Whenyouguyshavealoadrun.HowIongistheloadrun/ThanksCasFrom:D'Angelo,VioletR.To:Kukielka,Casimir

Subject:

FW:DieselStartsDate:Thursday,September25,19973:41PMSeeattachedinfo.From:Paley,RobertM.To:D'Angelo,VioletR.

Subject:

FW:Date:Thursday,September25,19973:22PMFrom:Kukielka,CasimirTo:Paley,RobertM.Date:Thursday,September25,19972:26PMBob,Ihavedieselstartsthrough3rdquarter96.Doyouguyshave4thquarter96tothepresentsIfsocouldyoupleasesendittome.Page1 1"Quarter1993IIy(~c.l~pf+41~DIESELGENERATORRELIABILITYRESULTSJAN93-DEC95BYQUARTERSDIESELGENERATORABCDESTARTATTEMPTS5434.4STARTFAILURES00000LOAD-RUNATTEMPTS5333LOAD-RUNFAILURES00000STARTRELIABILITY100%100%)PP100%1PP%2ndQuarter1993DIESELGENERATORABCDESTARTATTEMPTS35537STARTFAILURES000~00LOAD-RUNATTEMPTS3535LOAD-RUNFAILURES00000STARTRELIABILITY100%)PP100%100%100%3rdQuarter1993DIESELGENERATORAB.CDESTARTATI'EMPTS63334I~1STARTFAILURES00000LOAD-RUNATTEMPTS53324LOAD-RUNFAILURES00000STARTRELIABILITY100%)PP100%100%100%STARTTTEMPTS/748ABFileName:DQMRR4Quarter1993DIESELQENERATORASTART~LOAD-RUNE:0AD-RUNFAILURES>ATTEMPTS+FAIDURES5iIo4'0'XPage6of)0SARTRELIABILITY/')00%/I'01000/C4/26/96 d~~%AI~d&lbJVd~d4'"urter1993(OCTOBER1993TOSEPTEMBER1996)ROLLING36MONTHRELIABILITYDATAMAINTENANCERULEREPORTDIESELGENERATORRELIABILITYRESULTSDIESELGENERATORA8CDE1atSTARTATTEMPTS74843;JSTARTFAILURES00000LOAD-RUNATTEMPTS54643LOAD-RUNFAILURES00000STARTRELIABILITY100%1PP%100%1PP%100%DIESELGENERATORABCDESTARTATTEMPTS36461d'd'dSTARTFAILURES~00000LOAD-RUNATTEMPTS34341'OAD-RUNFAILURES00000STARTRELIABILITY100%100%100%100%100%DIESEL'ENERATORABCDESTARTATTEMPTS866912STARTFAILURES00000LOAD-RUNATTEMPTS45458LOAD-RUNFAILURES00000STARTRELIABILITY'00%1O0%100%tt100%IO0%DIESELGENERATORABCDEldSTARTATTEMPTS34245liSTARTFAILURES00000LOAD-RUNATTEMPTS332'5LOAD-RUNFAILURES00000STARTRELIABILITY100%100%100%100%100%FileName:98Q3REP.OOCdpage8of107/14/98 4ar1994ROLLG36MONTHRELIABILITYATADIESELGENERATORABCDESTARTATTEMPTS53436a,lSTARTFAILURES00000LOAD-RUNATTEMPTS53336LOAD-RUNFAILURES00000STARTRELIABILITY100%100%100%100%100%1Me5DIESELGENERATORABCDESTARTATTEMPTS33435/5STARTFAILURES00000LOAD-RUNATTEMPTS33435LOAD-RUNFAILURES00000STARTRELIABILITY1PP100%100%1PPopo100%~er1995DIESELGENERATORABCDESTARTATTEMPTS2666:/.p7STARTFAILURES00000LOAD-RUNATTEMPTS2445LOAD-RUNFAILURES00000STARTRELIABILITY10010Q%pp100%100%3rdarter199DIESELGENERATORABCDESTARTATTEMPTS45533STARTFAILURES00'0LOAD-RUNATTEMPTS34323LOAD-RUNFAILURES00000STARTRELIABILITY100%100%100%100%100%FileName:96Q3REP.DOCPage9of10'/14/96 ROLLING36MONTHREIIABILITYDATAI4'"uarter1995DIESELGENERATORABCDESTARTATTEMPTS976663YSTARTFAILURES00000LOAD-RUN.ATTEMPTS76456LOAD-RUNFAILURES00000STARTRELIABILITY100%100%100%100%100'l1uarter1996DIESELGENERATORABCDESTARTATTEMPTS34258STARTFAILURES00000LOAD-RUNATTEMPTS33246LOAD-RUNFAILURES00000STARTRELIABILITY100%100%1PP%100%1ppo2nduarter1996DIESELGENERATORABCDESTARTATTEMPTS63333/$STARTFAILURES00000LOAD-RUNATTEMPTS63333LOAD-RUNFAILURES00000STARTRELIABILITY100%100%100%100lo100%3rduarter1996DIESELGENERATORABCESTARTATTEMPTS445443.lSTARTFAILURES00000LOAD-RUNATTEMPTS44544LOAD-RUNFAILURES00000STARTRELIABILITY100%100%100%100%100oloFileName:08Q3REP,DOCPage10af10~O)&c7/14/96 MAINTENANCERULEREPORTDIESELGENERATORAVAILABILITYRESULTS4'"QUARTER19g6"""""'""""""""""""DIESEL:::::;.:I:::.::,';:";;<":""':":"":::::';::I'gHOURSIOUT:::OF...'SERVICE(0.26Hrs3.99Hrs2208Hrs2208HrsDESPARE3.38Hrs0.90Hrs0.58Hrs2208Hrs2208Hrs2208HrsMAINTENANCERULEREPORTDIESELGENERATORRELIABILITYRESULTS4"QUARTER1996"'jgi',~;::,':DIESEL~"'@:",-'":::@P':@@START"i~'""-':<"<."-4N,':,START":""~~~)4,"""L'OAD'-RUHR>Pk%'rgLPADWUN!.".";'"'ka'i'GENERATOR!'Ki5'i;~'ATTEMPTS'N';!':iij'-')FAIL~URESI!~X8;:iAT~TEMPTS4~5MKFAILURESh:"';-".,"AD(1)ESPARE)0*00000000(1)On12/10/96,theD/GEwasalignedasasparedieselandwasNOTsubstitutedforanydieselwhenthevalidstartfailureoccurred.

SUSQUEHANNASTEAMELECTRICSTATION97Q1MAINTENANCERULEREPORTDIESELGENERATORAVAILABILITYRESULTSfor1QUARTER1997'::;:"T$.-';,:::';p'~>Ri+<'.i:;DIESEL":;.+<j'":"'"'"4i'4g5lHOURSOUT:.OF'SERVICE%I5P'(,::5,"~PDIESEL<HOURS!INN!i'i'-""'~DA11.95Hrs13.20Hrs14.37Hrs0.18Hrs2160Hrs2160Hrs2160Hrs2160HrsESPARE0.00Hrs2160HrsDIESELGENERATORRELIABILITYRESULTSfor1QUARTER1997zSPARE~9.::~:..:g";;.:.DIESEL';:$~"--'i::<<j'::.;!j'.!NSTART,:g,:::",'>>';k!'-"'.GENERATOR:,':.~~~'-ki%',ATTEMPTS"4:.""j:,"::ii"'.;:"STARTjg~P<:,"~@,"<<:L'OADWUN;.'.;.""00000Pk(L'OAD-'.RUN>".;;0!.'FAIL'ORES5~:00000

SUSQUEHANNASTEAMELECTRICSTATION97Q2MAINTENANCERULEREPORTDIESELGENERATORAVAILABILITYRESULTSfor2"'UARTER1997,'r,'-'"".':::-:::.'::.',":.".:.".!::DIESEL'.,',.'::,'$'P'~V,j'":,ae:.":;I.",".:;..::.,':~.:.'::;-:;".::.",:-"",-'.,ABDESPAREj~s:HOURS,'.OUT':OF,SERVICE'j',:.'4.04Hrs0.88Hrs65.00Hrs8.02Hrs13.91Hrsi('j""'~>>DIESEL':HOURS,'IN,::,,"::,:~p.';,:.5'184Hrs2184Hrs2184Hrs2184Hrs2184HrsWhensubstitutedforD/GA,B,CorDDIESELGENERATORRELIABILITYRESULTSfor2"'UARTER1997;:;~></,,;;:;.4~?;~P-.;:g:'";(Pig;<~'.(>gAL!IP':STA'RABDESPARE)'.+>>>>?(<jgQALID@q$?::p'.i5:;:..'>>',FAIL?URES'5"'.::,'-','i00000i%ATTEMPTS:"~44~,':>>LOAD-.RUN:~j~:-.:@!;.';>>FAIL'URES;';"6'"'00~00 SSESSIGNIFICANTOPERATINGOCCURRENCERErQRTEVENTCLOSUREFORMREPOATNO./-fi(g(PAGE1OFSOORRecordPackagepsaE~OFm>TITLECLOSUREREPORT+KscPIPYTONOF--VENTRAIMI/-CI=LDWIOW,.er-P-~.I'IV>4r(3i"+'4~re(I-Q~4C0P(ZASacr~qp~~<><gs'~~C4'J1,C4~~V~~ErAj~J4D>>4>>C'4VC,4$~~~~~4r~Q~5C4se1o,grr~'855'J'--"b";hun'5~~+nc4>>grcrr@el:essdurngi<<e54grvrricvr.and~CQ3.8,qrCgq1<<5r4~~~AIDCAI:SZeFZUZiTDuringthesurveillanc>>starton6/19/91.'Iaintenancepersonnelverepr'esentmonitorkeyenginefunctionsduringthestart.Aninstalledvisicorderprovidedarocdrecordcfimportantdieselgeneratorparameters.Themonitoringconclusivelyidentifiedchecauseoftheslavstartasafuelcildeliveryproblem.Thisconclusionvasbasedonthefolloving:0Fueloilpressurevasobservedtostaylovforanextendeddurat'onintothestartinsteadofrisingin2to8secondsasisnormal.0TheFuelControlRackremainedfullyopenforthescartduration(normaloperation)0ObservedAirStartSystemoperationvasnormal.0Uislcordertracesshovedallgeneratorparameterstobenormal.'cc'Ig~r444NA4REFERENCEDOCLIMENTATION:1.REPORTINGFORM2.REPORTABILlTYASSESSMENT3.RESOLUTIONFORM'.NPRDSREPORTAGILITYDETERMINATIONtram~:rHScJ~~oQD~D/~QtiEc~WC~ICU~rtIOZOACCEPTANC0PLEAT7~-PiDATESR.COMPLIANCEENG.ORDESIGNEE79'iDATEPORCMEETINGNO.ASST.SUPT.OFPLAr&DATE gsES$tGNIF[CANTOPERATINGOCCURRENCEREPORTREPoRTNO.CONTINUATIONFORM+'7/-/~cATTACHMENTBEINGUSEDFOR:PAGE~OF~CONTINUATIONOFEVENTDESCRIP'"NCONTINUATIONOFIMMEDIATECORRECTIVEACTIONSCONTINUATIONOFASSESSMENTSUMMARYNO-REPORTABLITYDETERMINATIC"'CONTINUATION.OFEVENTCAUSECONTINUATIONOFCORRECTIVEACTIONSCONTINUATIONOFACTIONSTOPREVENTRECURRENCE+oTHERCaBasedoncheirvest'zation,themostprobablecauseofthe'C'DGslavstarthasbeenconcludedtobeexcessiveairctappedinthefuelsupplvheaderexistingpriorcocheinit'alsurvei'ancerunon6/19/91.Thecauseofa're!.t.apnencvi.thinthefuelsupplvheaderisbelievedtobeduetoenin~eccicnpu"p'laving'en;..cdif'ccc'cn'vhichhadbeeninplenencedor.rhe'C'DCnAugust1990.Theflavingventmodificat'onhadbeeninstalledtoaLleviateanin!eccionpumpoverheat'ingprobler.atidleorlovpoverengineoperationbydrainingexcessfuelnilbac'ktothemainfueloilstoragetanks.Thenevflovingventshavebeen:oundineffectiveinvencingairfromthefuelheaderdur'ingscarcup.ThismodificationhadbeeninstalledonEDCs'A'hrough'D'etveenAugustandOctober1990.,ItshouldbenotedthatEDG'E',vhichisaf':thandspa.eEDCacSusquehanna,isofadiffetentdesignandd'dnocrequirethismodificacicn.'~'armeroutsidetemperaturesexperiencedrecentlyhavecadecheproblem-oreevidentasdecreasedfueloilviscosityresultsfasterdraining.thusincreas'ngtherateatvhichairenterschefuelheader.Priortothe'C'G6/19/91slavstart,aconcetnforpotentialvoidingc..uelsupplvheaderhado):lvbeensurnisedforthe'D'DC.The'D'DChadexperiencedaslovscarconIarch25,1991duringamaintenancetroubleshootingrun.Althoughtherootcauseofrhe'D'DGslovstartcouldnocbeconclusivelydetermined,onepocencia)contributorvasidentifiedasthemodificationtothefueloilflovingventlines.hsaresult,theflovingvertnesverete-modifiedtoeliminateapotentialfuelheadervoidingproblem,Similatre-modificationsveredevelopedacthar.tinetabeimplementedasaprecautionarymeasureonthe'h','B'nd'C'DCsduringtheirnextinspectionoucagcs.ThiseventvasdetetninedtobercpottablepcrIOCFR50.73(a)(2)(vii)inthacasingleconditionresultedinaporentialforcvoormorcindependentchannelstobecomeinoperableinasinglesupportsystemdesignedtoshutdovnthereactor~maintainicinasafeshutdovnconditionandmitigatetheconsequencesofanaccident.Namely,airencrapmencinthefuelsupplyheadersofcheEDCs,identifiedasthcmosr.ptobcblecauseofrhc6/19/91'C'DCslovstartandcausedbyamodificationperformedon'A'hrough'D'DGsin1990,couldpotentiallyresultinstarttinesexceedingthoserequiredvhenthcenginesarestartedonceper31daysinaccordanceviththeTechnicalSpecifications.)~\}I'}Ir~}:Il.BOORRcordPackagePAGOFJ~O)}I4~I}iwMA04Mzi)o.se.z.Osage!c)))

osESSIGNIFICANTOPERATINGOCCURRENCEREPORT-CONTINUATIONFORMREPORTNO./-Pl-~c.PA(it,~wc/RCHMENTBEINGUSEDFOR:CONTINUATIONOFEVENTDESCRIPTIONCONTINUATIONOFIMMEDIATECORRECTIVEACTIONSCONTINUATIONOFEVENTCAUSECONTINUATIONOFCORRECTIVEACTIONSCONTINUATIONOFASSESSMENTSUMMARYNOREPORTABLITYDETERMINATIONCONTINUATIONOFACTIONSTOPREVENTRECURRENCEOTHER'EKC4i'M)CORRECTIVEACTION'SInspectionsimmediatelyafterthefailureverifiednofuelpiping1caksthatcouldhaveleadcotheslowscarc.AmanualFuelOilBoosterPumpstartvasinitiatedcodetermineifapumporpressureregulatorvalveproblemvasevident.Fuelpressurerisevasnormalandvithin2seconds,demonstratingproperoperationofcheBoosterPumpandacompletely"solid"(noairvoiding)fuelsupplyheader.FuelControlrackoperationvasobservedtobenormal.Atroubleshootingscarcwasperfor=edandthe'C'DCstarttimevas7.7seconds.TheBoosterPumpvasobsezvedcoscartimmediatelyandstopafevsecondslacerpericsdesign.Fuelpressurevasobservedtorisetoracedpressurevichin3seconds.~~Themonthlysurveillancecescvasrepeaced.Starttimevas7.6seconds.Properfuelsystemoperationvasagainobserved.The'C'DCvasstartedfromambientconditionsat0535hourson6/20/91.Thepurposeofthisrestartvastoverifythatnoocherfailuremechanismvasbeingaaskedbytherelativelyshortshutdovntimesbecveenthepreviousstarts.Follovingthesuccessfulstart,the'C'DCvasdeclazedOPERABLE.The'EDG~astestedon"eevery7daysinaccordancewithTechSpeczquirenents.Additionally,starttestswereimmediatelyperformedonthe'A'nd'B'DGs.Asaprudentmeasure.EDGs'A'nd'B'erestartedonceeveryl5daysuntiltheflowingventre-mod'icationwascompletedonthex.Theflovingventre-modificationwascompletedonal)EDGeby'7/27/91.Resultsto-datehaveshownimprovementsinEDGstarttimes.ThisSOORisrecommendedforclosure.&8'P~Pi-coraW-WSOORRecordPackagePP,GOOF~

SSESSIGNIFICANTOPERATINGOCCURRENCEREPORTEVENTREPORTINGFORMREPORTNO,1"91"156PAGE1.OF2INITIATORSTADATEWORKGROUP8ARRYWPALMER06/19/91UNITSYSTEMNO.024BLDG.LOCATIONEVENTDATEAEANDTIME4467706/19/91145RXPOWER/CONDITIONU11001u21001PRIORITYIEVENTDESCRIPTIONIINITIALINVESTIGATIONThe'C'ieselgeneratorwasdeclaredinoperablewhenitfailedtostartwithin10secondsduringperformanceoftheDieselGeneratorMonthlygQ.VOperabilityTest.WhileperformingtheDieselGeneratorMonthlyOperabilityTest,SO"024-001,"'he'C'ieselgeneratorfailed.tostartwithintheTequired10seconds.Thestarttimestoreachratedfrequency,speed,andvoltagewere28,24,20.1secondsrespectively.The'C'ieselgeneratorwasdeclaredinoperableandLCO3,8.1.1wasentered.ElectricalMaintenancewasnotifiedtoinvestigate.SOQi~Pp~~--,t.-.FAG~L,"-:~~L:II'I'4~>I,~L~~IIMMEDIATECORRECTIVEACTIONSInitiatedinvestigation.EnteredLCO.nI~4'tj't(Lt,StItlICONSEQUENCESOFTHEEVENTHOAGYERSECONSEQUENCESAEACTOR5IIUTOOYYHREGUCKQPLANtCAPACITYIHCREASKQOUTAQETIMEKOUtPLIEHTQAUAQKQfHQIHEfREOSAPEGVAAOFEATUREACTUATION+TECHSPECACTIONSTATELIKNTENTERKOtECHSPECYOLAT:OHI'EASQHHELINJURKOORCOHTAUIHATKOOTIIEAFVENTIDENTIFIEDBY~OPERATIONSPERSOttHfLIACPERSONNELUAYHTKNAHCfPERSONNELTECHNICALSTAPPPEASOHHELHEALTHPtIYSC$PEASONNELSECURITYPERSQHHKLO'THEA.i)'!~IIEVENTDETECTEDBYCONTROLROQttALAAII5+ittt~TURHQYERROUTINERQUHQ5VERtttCATIQHOPTASROOSEAYATIQNOPCONSKOUENCE5LOCALALARU~SUAVEILLAHCEtf$ttHGQQCUUfHTATIQHR'EVIEWCHAetCKOSSKAYATIQtt'TIIEREVENTISQAREPEATOCCURRENCETHEOIILYKNOWNOCCURRENCESnelPJltQAPASTOCCVRRENCERUTIIQTTHESAMEth4VA~OAttt5~~PPIH~~tt.sAt))THfeOLimbus~+':b SOQR:",:.-.,r,-w:-...I,~~PA8~0;=~@'COHSEQJE4=.SASSESS~~Therewerenoadversesafetyconsequencesasaresultofthisevent,oiiourdieselgeneratorswereavailableatallticresmeetingtheminimumstationbackupemergencypowersupplydesignbasisrequirement.The"C"Diese'eneratordidstarandwouldhavebeenavailableasapcMrsupplyifaneventhadoccurred.Oncethedieselwasstartedairwaspurgedfrcmtheuelsystem.Subsecuents~swiJoin-periodofapproximatelytwoweekswouldbeectedtobelessthantherequiiedtensecondstarttimebasedoninvestigationso=theproblem.mQ~.+~KMI~)~COPJKCTi~&ACTiGNSCorrectiveactionistoinstalliXP91-9013C,FuelOilSystemVentLineModification.Un"'lt"..enadificationcanbeinstalledthe"C"DieselGeneratorshallbestartedeverysevendays.Thereducedperiodbetweenstartswillmaintainthefuelupplyheaderpurgedofair.Similarly,DCP91-9013AandBshallbeinstalledondiese).s"A"and"B"topreventasimilaroccurrence.AlthoughaslowstarthasnotocvuraRoneither'fthesedieselstheyshallbestartedatanincreasedfrequencyofevery15daysasaprecautionuntilthemxlificationcanbeinstalled.TheuelOilSystemVentLineMcdificationwasccrrpletedonDieselGenerator"D"on5/25/91.AC1'ZONS'IOPR~~ZRECURRENC"Thereareno5Heractionstopreventrecun~ce.PASTSOLARSOORs1-91-068Insorcomprotrisatn~~hit-Mpyenosafet)cop'cocy~~sod't'lof>ty~c~:.sultofthj.sstohec.ox~n..+1~fotMoor.reindepondent-'.-~ye.ableinasinglesuppord'f:.~nd/~"coactor.maintainitin~safesdidexist.~itjr:atetheconsequencesofanaccioen.fun)cu'QplvheadersofEDGsstarttimesyhaver.ph~c;eroquirefulbvTechSpnsuchthis~ven".ctprtin+nemergencyrjtuatinn.nst,notedtnwhoCo~miss)qnver10'CFP50.73(a)<2}(viIk LICENSEEEVEN~REPORTHLER)TEXTCONTINUATlONSSTI4ATSOSVIIOSHASHAle@)HSAIVsv~i~IHiOII4ATIOHCOLLSCfIONIICOVSST'l00HAS.iOHWAAOCO44SHTSIISOAIIOIHOSVAOlH~STI4ATlTO1HIASCOAOSAHO1ltOIITS4AHAOSHSHTSIIAHCIIIi010IVSHVCLSAII+lOVLATOIIYCO44ISSIOH,~,ASHIHOTOH.OCTOSSS.AHOTO'IHl>AAtIIWOIIlIISOVCTIOHAHOJSCTISIS00IOAI.OfAICSOA4AHAOIUIHTAHOSVOOST,WASIIIHOTOH.OC10$01,~A,ITYH~IIIOOCIIlTHV40lATSIvfAALSIIHV40SAIll~IOVIHIIAL4A+IVHHIh4~AOI<SI1SosuehannaSteamE'.ectricStdt>onflyIIf~~~~~ecWewWHIfCAme~SfIITIo5ooo3S7910070006QF0cADDITIONALINFOR.'fATIONThisLicenseeEventReportalsofulillstherequirementforissuanceofaSpecialReportperTechnicalSpeciixcation4.8.1.1.4forallEDGfailures,validornon-valid.FailedComponentIdentification:NoneidentifiedPreviousSimilarEvents:LER90-015-00reportedaslovstartontheA'DG7/26/90.Thlfcauseoftheslowstartvasasheared1"reducerontheairstartheaderpiping.PLAS-455{SpecialReport)describedaslowstartonthe'D'DGon10/30/90.Nopositiverootcausewasdetermined.PLAS-428{SpecialReport)describedaslovstartonthe'E'DGon5/15/90.ThisslovstartvasattributedtoairinfiltrationintothefueloilpipingasaresultofaFuelOilBoosterpumpsuctionflangeleak-.

5, April24,1991cc:H.G.StanleyT.C.DalpinzE.<".Figard0'.Kuczynsk!S.B.Kuhn8~R.)IeidnrnO'0"'cII..I.I'nImcrSIISc)',E)IAY4ASTF.,":EI.FCTRICSTATIONDIESEI.GENERATORA-FAILl'REDURINGSF.-""'-107APRIL-"",1991I'.IS-3729>>FII.F.R48-6SF'07,'18~InthDieselGeneratnrAandC(orE>AutoStartnndESSBusesnnd.'.0Fncrgi;atinnnnLnssnfOffsirePnwcrwithaI.OCA-PlantShutdown",pcrfnrmstestingtnfulfillsevcrn1TechnicalSpccificntinnsurveillancerenu!renents.DuringtheperformancenfSE-224-107onApril22,1991.Diesr1Gencrntnr's"A"and"C"veregivennstartsignalviatheSEorocedure.The"A"D!rsrIfniIcc!tcnch'.everatedspeed.Asnresult,rntec!vcItngenndfrccucnrvvc!rnlsnnntachievedandtheDieseldidnnrenrrgi.".rthecmergcnc",bus.Subsequently.theenginevnsmanuallytrippec!.IInsednntheprnpcrilluminntinr.cftestlightsandthenrnn'e.startofthe"C"Diesel,vebelievethatthefailureofthe"A"Dieseltnprnperlystartisassociatedwithaproblemwiththe"A"DieselandnctwiththcESP.logic..Iaintenanceiscontinuingitstroubleshootinp,,investign'tion-w5:th-the"A"Dieseltobetterdeterminecause.Intheinterim-the.followingissuesr.ustbeaddressed:(I'ISubstitutiono.the"E"Dieselforthe"A"Diese...<<asednntheisfn....atinnveLave."ebelievethefailurenithe"A"Dieselisassnciatedwiththeengineitself.Therefor.noadditionalsurveillancetesting,aboveandbeyondwhatisnormallydnnefnrsubst'tuticn.is,required.',":I'.I.~tu<<.lSE-22>>-107.Duetctheproblemwiththe"A"Dieselthetestcouldnetbecompleted.Althoughpnrtionsnfthetestweresuccessfullycnrpleted.itisourintenttoreperfnrmthesurveillance,initsentirety,vhrnthc"A"Dirse1isreturnedtnservice.IIC

~-pr<<)('l10<rabf1ftvtncrfn.n(the"A"1)f<snlA'4lease<l.ooth<in(nrmation<:chaveMchethef'ail>>reo5thc"A"Dieselassn<'fated<:Ithth<rnpfn<frsr1fa>><lnotth<FSFIo<;fc.Rctcsrfnr,(orop<rahI11tvsh<in,dbc<'F.A)<iAO<,rr,<st<nninc<r<rrvr>>rvstartI<iyI(So-0"l<-001.('I~f<srIeeneratnrvalid/nonvalidfailure.AIIfn<lication.ndatristhatthe"A"Dfcs<'1rcccive<lavalidemergcncvstartsirnal.Therefore,itsEailur~'oadecuatclvstartandachieveratedc<.rditions~fthfn10secondssl;:idbeconsidcre<!avalidfailure."i')T..a'.,'Irrk'lant'nefneerfnc.Supcrvfs<rjl,F.Rorh<'enfnrCo<<<plianccFncfnccr

~~~PennsylvaniaPowerLLightCompanyTwoNorthNinthStreet~Allentown,PA18101~215I7705151Junelh,(990bcc:H.W.Keiser.TW-16A.M.MaleA6-2F.G.ButlerA6-2I'Cc.A6>>1J.R.MiltenbergerA6-1Z.'N.'Z~yA2-4Nr.T.T.Hartinm~~,H.D.WcxxhshickSpu..Off1.ce-b.xwiRegionalAdministrator,RegionIM.T,~nSusq.'I'rainingCenU.S.NuclearRegulatoryCcnmissionR.J.PregoSB-2475AllendaleRoadSRC(Attn:W.R.Licht)A6-1KingofPrussia,Pa.19406M.M.GoldenSSEST.J.NorkSSESW.G.HafnerSB-1iGHCSecretarySSES'OCFileSSES'.Dyckrttan-AlleghenyElectricC~ratiP.O.sax1266SURXJEtVBNASTEAMEZZCZRICSTATI(NHarrisburg,PA17108-1266SPECIALREFORIE'IESELFAILURE'IoJ,D,DeckerGeneralACHIEvE60HZFREQUENCYWITHIN10SErXNDS5HighlandPlace~-r28FILER41-2ehern,PA18017INPO~rdsCent'er-Suite15001100Circle75Pkwy.DocketNo.50-387AtlantaGA,30339LicenseLLo.NPF-14FearicanNuclearInsurers-TheExchangeSuite270Fazrt~pxnAve.Fartttington,CT06(I32

DearMr.MartinAttn:

LibrarianAilDieselGeneratorfailures,validorinvalid,aretobereporttxtasrequiredbyRegulatoryGuide1.108,SectionC.3.bandTechnicalSpecificaticn4.8.1.1.4.OnNay15,1990at,2125hoursthe'E'ieselGyrator(D/G)wasstart~Ainaccorda~withsurveillancetestSO-024W01followingitssubstitutionforthe'O'/Gc&cmbeingrenaved~serviceformaintenance.D/G'E'sasparefithD/Gwhichcanbesubstit~foranyofthefour(A,B,CorD)D/G'satSusquehanna.The'E'/Gfailedtoachievegenerator.frc~mcy~f60(+3.0,-3,0)Hzwithin10seccax1sasxmp~BbyTechnicalSpecificationSurveillanceRequirazant4.8.1.1.2.a.The.'E'/Gwasshutdown.Limiting'.".yditicaforOperation(M3)3.8.1.1wasentered.'Ihe'D'/Gwassubstitutedbackinforthe'E'/G.Thus,fourseparate,independentD/G'swereagainOPERABLEasrequiredbytheTechnicalSpecificationsandIlD3.8.1.1wascleared.Thswasthesecondobservedabnormalstartofthe'E'/Ginalittlemarethanaonenenthperiod.OnApril10,1990thecbservedgeneratorfrequencydidnotmeetitsrequiredvaluewithin10secondsduringastartattarpt.'IbisstartatemptwasclassifiedasancnmalidtestbyOperaticassinceithadfollowedrtaintenanceactivitieswh'chhadbeewperfoxmedonthe'E'/G.

Follcwingthe4-10-90sluggishstartthe'E'/Gfrequencymetercircuitwasenrrnined,alongwiththegovernorfuelrack,airstart,speedsensingandotherccmponentsandnoabnormalitieswerefound.priortothestart,theairsupplytothestartingheaderhadbeenconf~t'oberxrrmalatgreaterthanorequalto240psig.AsecondstartattempthadbeensuccessfulwiththeD/Gattainingitsrequiredparrrmeterswithinthe10secondtimelimit.Thespecificcause'fthe4-10-90slowstartcouldnotbedeterrrunedatthattime,however,theinvestigationdidnotidentifyanyreasonfortheslowstarttobeclassifiedasavalidtestorfailure.Asubsequentstartatterrrpton4-12-90at1331hourswasalsosuccessfulwiththe0/Gattainingallrequiredparameterswithinthe10secondtinelimit.Followingthe5-15-90slowstart,asecondstartattemptwasmadewiththe0/Gnrccessfullyattainingitsrequiredparameterswithinthe10secondtirelimit.Aninvestigationwasthenconductedandseveralaircontmlpressurerrgulatororshuttlevalvesweredisassembled,inspectedandtestedalongwithstartingrelaylogiccircuitry.Noabnormalitieswerefound.Finally,thefueloilsystempipirrgwasinspectedandaloosesuctionflangeontheDCFuelOilBoosterPumpwasfoundtobeleaki;rgslowlyandisbelievedtohavebeendrawingairin,resultinginslowerengineaccelerationonfueloilduringinitialstartattempts.ineFuelOilBooster~suctionflangewasproperlytight~andanothersuccessfulstartofthe'E'/Gfollcwedat2040hourson5-17-90.Theloosesuctionflange,andresultantintroductionofairtothefueloilsystem,isbelievedtobethecauseofthe5-15-9.0surveillancetestfailure.Topreventrecurrence,theMaintenanceSectionwillrranitortheintegrityofthisflangeardotherfueloilsystemconnectionstooptimizetheinspectionpericdsforthesetypesofconnectionsconsistentwiththeD/Greliabilityprogramefforts.AsaresultofreviewoftheD/G4-10-90testrunclassification,performedsubsequenttothe5-15-900/Gslowstart,PP&Lis~iewingitspracticeccncerningwhenadieselrunisclassifiedasapostmaintenancetestversusoperabilirgtestandwiU..establishclearclassificationdirectionsconsistentwithRegulatoryGuide1.108.Theloosepm'uctionflange,discovered-afterthe5-15-90slowstart,isnewbelievedtobeapotentialcauseofthe4-10-90slurstart,whichwouldlendscrrcredencetoretroactiveclassificationofthe4-10-90slowstartasavalidtestfailure.Inthiscase,however,PPRLfeelsthatifbcrcislowstarts"areattributedtothissarw'.cause,itwouldnotbeinthebestinterestofthe0/Greliabilityeffortstore-classifythe4-10-90startattemptasavalid;.testfailure.'Ihiswouldresultinhavingtwo(2)failuresinthelast20,validtestsandatestintervalofonestartat,leastonceper7daysperTechSpecTable4.8.1.1.2-1,whichPPrLfeelswouldbeanunneoessaryburdenonthe'E'/Gandunjustifiablefranareliabilitystandpoint.duetoasingularcausalfactorwhichwascorrected.Assuchthe4-10-90slowstartwillremainclassifiedasancamalidtest.ThispositionwasreviewedwiththeNRrSeniorResidentInspector.D/G'E'asunavailableforsubstitutionusefran2125

'I'4C~~~'8hourson'5-15-90to2040hourson5-17-90.'Ihe5-15-90'E'/Gslewstartteaisccnsideredavalidtestandvalidfailure.TheDieselGeneratorStartLogindicatesthereisone(1)dieselfailureinthelast20validtests.Thedieseltestintervalisonestartat1";~tonceper31daysperTechnicalSpecificationTable4.8.1.1.2-1.~sr'~.G.StanleySuperintendenofPlant-SusquehannaRRH/mmmmcc:U.SNuclearRegulatoryCcmnissionDonxmntControlDeskWashirx~n,DC20555Mr.G.S.BarberSr.ResidentinspectorU.S.NuclearRegulatoryCcnmissionP.O.Box35Berwick,PA18603-0035 A.2MotorDrivenPumpDataRHRpumpsNumberDemandsFailuresthru8990-97"totalthru89@90-97'otal1A1B1C1D2A2B2C2D4082686763032565591731993721982154139925735612827440286'51337892293180000000000000002021~01123,Total148419483432426QDatathrough89isobtainedinVolurncIIISectionC.loftheIPE-199litDemaddataisobtainedfromEC-RISK-1060,Rev.1.FailuredataisobtainedfromreviewsofSOOR&CRsummaries.ThesesummariesareprovidedinthisAppendixRHRPumpRunTimesTheRHRpumpruntimesandfailuresduringoperationwereobtainedfromtheIPRthrough1/1/90andestimatedfromtheattacheddatathrough12/31/97.ThenumberofpumpfailurestorunwereobtainedfromSOOR&CRsummaries.Therunhoursforthepumpsfrom1/90through12/97wereestimatedbymultiplyingtheclosedfractionreportedontheHRPDoutputbythenumberofhoursbetween1/90through12/97(70140hours).ThiswasrequiredbecausetheHRPDdatawasqueriedonlythrough7/31/96.RHRpumpstoRunNumberthru89fopen90-97totalFailuresthru8990-97total1A1B1C1D2A2B2C2DTotal57760.93148371061330290.9344627765636080.9543225683325960.9523365596125020.9473716621827040.9185749845320960.9255258735432350.92453288563000000002554636104616500,00

EmergencyServiceWaterPumps'umpDemandsNumberFailuresNumberFailuresABCD1559414721143929521302471422122271911310350Total542281306854TheESWpumpdemanddatawasobtainedfromEC-RISK-1060Rev.1.Thefailuredatathrough1989wasobtainedfromEC-RISK-0503.Rev.1.Failuressubsequentto1989wereobtainedfromareviewoftheSSPIandMaintenancerule'records.Nofailureswerereportedsubsequentto1989.CoreSprayPumps.Dataforthecorespraypumpsisderivedfromunitonedata.CoreStartsFailuresRunFailureSprayHours1A1B1C1D2A2B2C2DTotal2152361902021811981601701553328545531749592532873613291330920284180RHRSWTheRHRSWstartsandrunhourswereestimatedfromtheattachedHRPDdata.Thenumberswereestimatedsincethedatadidnotcovertheentiresaneofthedata.ThereforitwasassumedthatthepumpswereusedatasimilarfrequencyanddurationduringtheperiodswherethedataisabsentaswhenthedataisprovidedbyHRPD.Theratioofknowntoestimateddataisprovidedbelow.

RHRSWU14/30/987/1/837/1/839/10/8214.84110.8054790.948521/10/954/1/982/1/855/8/849.94520513.90685'0.715131A1B2A2BDemandOperatingKnownEstimatedKnownEstimated8428881690217819785828145311532070999114483202526438991243117383297936065834770774 NDBH-71UNIT'1,PAGE138FORHRPDDATAREPORTTHEINTERVALBETWEEN0:00ON7/01/83ANO23:59ON4/30/9805/21/9808:20:34INTERVALDURATION:30031:59:59POINT:EKZ43*-ESSBUS1ATOCSPRYPPASTATEDEFINITIONS:0-OPEN1-CLOSEDTOTALNUMBEROFOPENTOTALIMPLIEDOPENTOTALNUMBEROFCLOSEDTOTALIMPLIEDCLOSEDAVGTIMEINTERVALSINOPEN202TOTALTIMEOPEN2190'OTALTIMECLOSED14622:19:18CLOSED26953:40:25OUTOFSERVICEFRACTION:0.9763078:19:3415:09:51 qlNDBH-71UNIT1,PAGE156HRPDDATAREPORTFORTHEINTERVAI.BETWEEN0:00ON7/01/83AND23:59ON4/30/98'5/21/9808:20:34INTERVALDURATION:30031:59:59POINT:EKZ50ESSBUS18TO'CSPRYPP8STATEDEFINITIONS:0-OPEN1-CLOSEDTOTALNUMBEROFOPENTOTALIMPLIEDOPENTOTALNUMBEROFCLOSEDTOTALIMPLIEDCLOSEDAVGTIMEINTERVALSINOPEN222421313TOTALTIMEOPENTOTALTIMECLOSED556:29:13CLOSED25766:03:424265:56:1718:57:35IOUTOFSERVICEFRACTION:0.967IIIIIxAPi//cj.I~~~-cfst~~r~4/'/i/is~~~t4=g3>stirppowp~y'poW/f<LKP))3 UNIT1,PAGE171FORTHEINTERVALBETWEEN0:00ONHRPDDATAREPORT7/01/83AND23:59ON4/30/9805/21/9808:20:34INTERVALDURATION:30031:59:59POINT:EKZ57-ESSBUS1CTOCSPRYPPCSTATEDEFINITIONS:0-OPEN1-CLOSEDTOTALNUMBEROFOPENTOTALIMPLIEDOPENTOTALNUMBEROFCLOSEDTOTALIMPLIEDCLOSEDAVGTIMEINTERVALSINOPEN179TOTALTIMEOPEN3170TOTALTIMECLOSED12705:27:11CLOSED28392:27:56OUTOFSERVICEFRACTION:0.9871639:32:039:03:29 NDBH-71UNIT1,PAGE187FORHRPDDATAREPORTTHEINTERVALBETWEEN0:00ON7/01/83AND23:59ON4/30/9805/21/9808:20:34INTERVALDURATION:30031:59:59POINT:EKZ63-ESSBUS1DTOCSPRYPP0STATEDEFINITIONS:0-OPEN1-CLOSEDTOTALNUMBEROFOPENTOTALIMPLIEDOPENTOTALNUMBEROFCLOSEDTOTALIMPLIEDCLOSEDAVGTIMEINTERVALSINOPEN190518411TOTALTIMEOPENTOTALTIMECLOSED638:21:49CLOSEDI24480:56:18OUTOFSERVICEFRACTION:0.9575551:03:4128:36:49 NOSH-71UNIT2,PAGE17HRPDDATAREPORTFORTHEINTERVALBETWEEN0:01ON1/01/90AND23:59ON7/31/96POINT:EKZ71-ESSBUS2ATORHRPPASTATEDEFINITIONS:0-OPEN08/12/9610:31:40INTERVALDURATION:57695:58:591-CLOSEDTOTALNUMBEROFOPENTOTALIMPLIEDOPENTOTALNUMBEROFCLOSEDTOTALIMPLIEDCLOSEDAVGTIMEINTERVALSINOPEN211TOTALTIMEOPEN3172TOTALTIMECLOSED42255:21:45CLOSED54647:38:02OUTOFSERVICEFRAG'TION:0.9473048:20:5714:18:41

NDBH-71UNIT2,PAGE35FORTHEINTERVALBETWEEN0:01ONPOINT:EKZ77-ESSBUS28TORHRPP8HRPDDATAREPORT1/01/90AND23:59ON7/31/96STATEDEFINITIONS:0-OPEN08/12/9610:3I:40INTERVALDURATION:57695:58:591-CLOSEDTOTALNUMBEROFOPENTOTALIMPLIEDOPENTOTALNUMBEROFCLOSEDTOTALIMPLIEDCLOSEDAVGTIMEINTERVALSINOPEN224TOTALTIMEOPEN4174TOTALT'IMECLOSED54231:41:10CLOSED52824:27:15OUTOFSERVICEFRACTION:0.9164871:31:4421:27:37 NDBH-71UNIT2,PAGE52FORTHEINTERVALBETWEEN0:01ONPOINT:EKZ82-ESSBUS2CTORHRPPCHRPDDATAREPORT1/01/90AND23:59ON7/31/96STATEDEFINITIONS:0-OPEN08/12/9610:31:40INTERVALDURATION:57695:58:591-CLOSEDTOTALNUMBEROFOPENTOTALIMPLIEDOPENTOTALNUMBEROFCLOSEDTOTALIMPLIEDCLOSEDAVGTIMEINTERVALSINOPEN203TOTALTIMEOPEN6146TOTALTIMECLOSED63255:17:11CLOSED53354:53:21OUTOFSERVICEFRACTION:0.9254341:05:3820:52:14 NDBH-71UNIT2,PAGE67FORTHEINTERVALBETWEENHRPDDATAREPORT0:01ON1/01/90AND23:59ON7/31/96POINT:EKZ87-ESSBUS2DTORHRPPDSTATEDEFINITIONS:0-OPEN08/12/9610:3'I:40INTERVALDURATION:57695:58:591-CLOSEDTOTALNUMBEROFOPENTOTALIMPLIEDOPENTOTALNUMBEROFCLOSEDTOTALIMPLIEDCLOSEDAVGTIMEINTERVALSINOPEN188TOTALTIMEOPEN3158TOTALTIMECLOSED33278:59:02CLOSED53285:57:40OUTOFSERVICEFRACTION:0.9244410:01:1923:12:38 POINT:EKZ41-ESSBUS1ATORHRPPASTATEDEFINITIONS:0-OPENNDBH-71UNIT1,PAGE18HRPDDATAREPORTFORTHEINTERVALBETWEEN0:01ON1/01/90AND23:59ON7/31/9608/12/9610:30:46INTERVALDURATION:57695:58:591-CLOSEDTOTALNUMBEROFOPENTOTALIMPLIEDOPENTOTALNUMBEROFCLOSEDTOTALIMPLIEDCLOSEDAVGTIMEINTERVALSINOPEN220TOTALTIMEOPEN3213TOTALTIMECLOSED10240:56:19CLOSED53729:21:40OUTOFSERVICEFRACTION:0.9313966:37:1917:52:03 NDBH-71UNIT1,PAGE35FORTHEINTERVALBETWEENHRPDDATAREPORT0:01ONI/01/90ANO23:59ON7/31/96POINT:EKZ48-ESSBUS18TORHRPP8STATEDEFINITIONS:0-OPEN08/12/9610:30:46INTERVALDURATION:5?695:58:59CLOSEDTOTALNUMBEROFOPENTOTALIMPLIEDOPENTOTALNUMBEROFCLOSEDTOTALIMPLIEDCLOSEDAVGTIMEINTERVALSINOPEN208TOTALTIMEOPEN5203TOTALTIMECLOSED10252:52:38CLOSED53862:53:16OUTOFSERVICEFRACTION:0.9343833:05:4318:04:50 NDBH-71UNIT1,PAGE49FORTHEINTERVALBETWEEN0:01ONPOINT:EKZ55-ESSBUS1CTORHRPPCHRPDDATAREPORT1/01/90AND23:59ON7/31/96STATEDEFINITIONS:0-OPEN08/12/96103046INTERVALDURATION:57695:58:591-CLOSEDTOTALNUMBEROFOPENTOTALIMPLIEDOPENTOTALNUMBEROFCLOSEDTOTALIMPLIEDCLOSEDAVGTIMEINTERVALSINOPEN163TOTALTIMEOPEN3155TOTALTIMECLOSEDll331:42:08CLOSED55062:36:01OUTOFSERVICEFRACTION:0.9542633:22:5815:57:35

NDBH-71UNIT1,PAGE64FORTHEINTERVALBETWEEN0:01ONPOINT:EKZ61-ESSBUS1DTORHRPPDHRPDDATAREPORT1/01/90ANO23:59ON7/31/96STATEDEFINITIONS:0-OPEN08/12/9610:30:46INTERVALDURATION:57695:58:591-CLOSEDTOTALNUMBEROFOPENTOTALIMPLIEDOPENTOTALNUMBEROFCLOSEDTOTALIMPLIEDCIOSEDAVGTIMEINTERVALSINOPEN178116712TOTALTIMEOPENTOTALTIMECLOSED306:51:42CLOSED54928:15:02OUTOFSERVICEFRACTION:0.9522767:43:5715:32:56 A.3SummaryofRHRSOORsandCRs.

'NDBtl-71UNIT1,PAGE63HRPDDATAREPORTFORTHEINTERVALBETWEEN0:00ON7/01/83AND23:59ON4/30/9805/21/9808:20:34INTERVALDURATION:30031:59:59POINT:AEZ49-RHRSWPUMPABKRSTATEDEFINITIONS:0-OPEN1-CLOSEDTOTALNUMBEROFOPENTOTALIMPLIEDOPENTOTALNUMBEROFCLOSEDTOTALIMPLIEDCLOSEDAVGTIMEINTERVALSINOPEN773TOTALTIMEOPEN69824TOTALTIMECLOSED18134:21:29CLOSED$13129l41:05OUTOFSERVICEFRACTION:16902l18:54~J~gg20:05:52O.870~iI NDBH71UNIT1,PAGE122IHRPDDATAREPORTFORTHEINTERVALBETWEEN0:00ON7/01/83ANO23:59ON4/30/9805/21/9808:20:34INTERVALDURATION:30031:59:59POINT:AEZ50-RHRSWPUMP8'BKRSTATEDEFINITIONS:0-OPEN1-CLOSEDTOTALNUMBEROFOPENTOTALIMPLIEDOPENTOTALNUMBEROFCLOSEDTOTALIMPLIEDCLOSEDAVGTIMEINTERVALSINOPEN735TOTALTiMEOPEN50760TOTALTIMECLOSED25147:08:05CLOSED15500:55:43OUTOFSERVICEFRACTION:0.88814531:04:1618:32:04 NDBH-71UNIT2,PAGE53FOR-THEINTERVALBETWEENPDDATAREPORT0:00ON2/01/85ANO0:01ON1/01/9505/21/9808:24:05INTERVALDURATION:86904:01:59POINT:AEZ49-RHR-SWPUMPABKRSTATEDEFINIONS:0-OPEN1-CLOSEDTOTALNUMBEROFOPENTOTALIMPLIEDOPENTOTALNUMBEROFCLOSEDTOTALIMPLIEDCLOSEDAVGTIMEINTERVALSINOPEN645TOTALTIMEOPEN64636TOTALTIMECLOSED73102:08:41CLOSED72420:45:12OUTOFSERVICEFRACTION:0.83314483:16:4720:27:23 NDBH-71UNIT2,PAGE101FORTHEINTERVALBETWEENPOINT:AEZSO-RHRSWPUMP8BKR05/21/9808:24:05HRPDDATAREPORT0:00ON2/01/85AND0:01ON1/01/95INTERVALDURATION:86904:01:59STATEDEFINITIONS:0-OPEN1-CLOSEDTOTALNUMBEROFOPENTOTALIMPLIEDOPENTOTALNUMBEROFCLOSEDTOTALIMPLIEDCLOSEDAVGTIMEINTERVALSINOPEN579TOTALTIMEOPEN64612TOTALTIMECLOSED31115:49:13CLOSED74472:32:33OUTOFSERVICEFRACTION:0.85712431:29:2619:21:49 A.3SummaryofRHRSOORsandCRs.

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PMIS:4910/02/95SUSQUANNASESSOORSUMMARYREPORTFORSYS49-UNIT0/1SORTEDBYUNIT,ISSUEDATE&SOOR/IPMI5PAGE1SYSSOORIiOCCURDATEDESCRIPTION4984-081OTHERAFFECTEDSYS:644986225OTHERAFFECTEDSYS:544987-395OTHERAFFECTEDSYS:514988-140OTHERAFFECTEDSYS:5052491-89-339OTHERAFFECTEDSYS:491-91-089/OTHERAFFECTEDSYS:491-91-266OTHERAFFECTEDSYS:512/09/847/23/057/02/875/05/8811/08/894/17/9110/18/91RHRPUMPSEALWTRCOOLERSAREINADEQUATELYDESIGNED.2/9/84EVALCOM.MTG.RECOMMENDS10CFR72REPORT,PLI-31058.THESEALWATERCOOLERSWEREREPLACEDWITHNEWSHELLSMADEOFCASTSTEELVS.CASTIRON.NQAREVIEWREQ.DELETEDPEROPS-5R.S.CI.QSEDHR,ESWFLOWTRANSMITTERSCOMPLETELYCOVEREDUNDERWATER.AUSED~BY>GROUNDWATERLEAKINGBYSEALSINMANHOLES.WRAPS-0$l53PWjtITTENTODETERMINEREPAIRMETHODS.,EMPT./PMISSUEDTOPUMPDOWNMANHOLES.WAS65301&S73632C)OS)P"SEALEPfEPPTRATIONS.POSTLOCABYPASSLEAKAGEWATERSEALBARRIERISSUSPECTFOR.BRANCH'LINESCONNECTEDTORHRANDCORESPRAYSYSTEMS.LICENSINGREVIEWEDTHECONDITIONANDDETERMINEDTHATITWASNOTREPORTABLE.REF.NCR87-0288FORFURTHEREVALUATIONCLOSEDPOTENTIALREPORTABILITYRE:HPCI,RCIC&RHRLIMITORQUEOPERATORS.NUCLEARDESIGNCONCLUDEDTHATTHEAMOUNTINGARRANGEMENTWASNOTENVIRONMENTALLYQUALIFIED.LICENSINGDETERMINEDTHATTHECONDITIONISNOTREPORTABLEPERPART21.REFNCR'588-110,181,182&267.CLOSEDCONTAINMENTBOUNDRYVALVECAPFOUNDREMOVEDFROM151077&251077REFNCR89-0697AND701.REFEWRM00020WHICHDETERMINEDTHATTHECONDITIONDOESNOTVIOLATEPPLCOMMITMENTTOGDC-56.CLOSEDRWCUBLOWDOWNMAYNOTBEAVIABLEMETHODOFHEATREMOVALFROMCONTAINMENTBELOWAPPROX450PSIRXVESSELPRESSURE.ERTPERFORMED.REFPLI68259.ROOTCAUSEOFTHISOCCURRENCEWASINADEQUATECOMMUNICATION.THISCONTRIBUTEDTOTHEFAILURETORESOLVETHETECHNICALOPINIONDIFFERENCESBETWEENNUCLEARFUELS,SYSTEMENGINEERINGANDOPERATIONS.THISISCONSIDEREDTOBEANISOLATEDOCCURRENCEBETWEENTHESETWOWORKGROUPS.CLOSEDRHRANDCORESPRAYVALVESSUSCEPTIBLETOPRESSURELOCKING~RECOMMENDEDCORRECTIVEACTIONISTODRILLAHOLEINTHEDISKOFEACHAFFECTEDINJECTIONVALVE.REFDCP919080THRU9083'CP91"9080AND91-9082CORRECTEDFORUlDURING6RIO.DCP91-9081AND91-9083INSTALLEDDURINGU2BRIO.CLOSEDTOTAL:7

PMIS:EVR4910/02/95SUSQUEHANNASESSOORSUMMARYREPORTFORSYS49-UNIT0/1SORTEDBYUNIT,ISSUEDATEdSOORttPMISPAGE2SYSSOORtt4983-063/)/~wc'.<498306449,8508849'3-12949C.83-15549,v833344983-3704983-3734984-0574984-O7O4984-1384984-2044984-298OCCURDATE2/16/832/16/832/18/834/08/835/13/8311/06/8312/03/8312/07/831/29/842/03/843/21/844/29/847/21/84DESCRIPTIONALTEPABKRTRIPCAUSEDLOSSOFS/DCOOLING.ALTERNATEPOWERSUPPLYTOTHERPSISNOTISOLATEDFROMTHEPLANTELECTRICALSYSTEMANDTRIPSONSMALLVOLTAGEORFREQUENCYOSCILLATIONS.'QAREVIEW(EQ.DELETEDPEROPS-5R.S.CLOSED'"1ALT'PABKR.TRIPCAUSEDLOSSOFRHRS/DCOOLINGALTERNATEPOWERSUPPLYTOTHERPSISNOTISOLATEDFROMTHEPLANTELECTRICALiS)STEMiTRIPSONSMALLVOLTAGEORFREQUENCYOSCILt:ATiONS.'"~'ttAttEVIEWREQ.DELETEDPEROPS-5R.B.RHR"'BhINJ.VALVEHIGHVIBRATION.(F017VALVES)THEOPERAiTit(GJPROCEDURESHAVEBEENMODIFIED.PgR82"'051)'l('lSQ't)PFULE)RELEASED8/7/84."INQ'4+REVIEW<REQ)'DELETEDPEROPS-5R.5.pAO(I'~>'itHHRHfPISCHARGEVALVE1F0038.WOULDNOTOPEN.TEPTORWAS"tt'Ekg)L'CED.WA-S31070NR'REVIEW'RP'Q.DELETEDPEROPS-5R.S.C)OSPD"5/DCOOLINGHIGHFLOWSWITCHWASOUTOFTOLERANCELIMITS.BARTONMODEL28IBASETPOINTDRIFT~CCALIBRATIONDATAISBEINGTRENDED-REFSOOR2BPP49WHICHISMASTER'CLOSED.RHRLOOP'8'ECLAREDINOP-CHECKVALVE)F0318WOULDNOTSEAT.CAUSED'BYMIS"A).'1GNt(ENT"OFTHEVALVEDISCANDABENTHINGEPIN.EWR')DSEA60003'7tPROVIDEDCORRECTIVEACTION.PHRSYS"VLVSWEPE'f(SPECTED/REPAIREDASNEEDED.tCLOSED>I8WhiRHRVALVESFAILEDTOMEETACCEPTANCECRITERIA.THE).EAKAGEPAST'RHRTESTABLECHECKVALVES(1F050Ad8)ANDE'QUA).12ING'VAKVESV'((F122Ad8)WASTOOGREATTOBEMEASURED.PERMANEN'P(CHANGE'MADETOS0-100-019..tCLOSED(DCC1.8IRHRCONDUOTIVITYINSTRUMENTCR1.2351INACCURATE.EMOSWRITTQMtTOS/A(SANDOPSABOUTREPORTINGWHENCHEMISTRYgi'TAKENG'SAtlPL'ES~.CL6SED/DOCS('.'1ECIRCUITSt(OTISOLATEDFORRHR.10CF(50.'65EAND)OCfR21REPORTSWEREMADE~RPF'1SOOR'-8/~0)2:CLOSEDI)VRHRPUMP.TRIP.QNDVALVESF008dF009CLOSEDWITHNOALARMS.PROBhBf.'ECAUSEFROMHIGHFLOWASARESULTOFVALVINGOPERATIONS.SYSeWASt(E)klPNjEDiTOSERVICEWITHOUTINCIDENTa"-C'LOSPD'i.".4!r'4'Plt~RHRSHUTDOtlCOOLINGISOLATIONACTUATION,HIGHFLOWSUSPECTEDSPURIOUSiATUATIONOFRHRDIFF.PRESSURESWITCHESCAUSEDCLOSUREOF'SH,TDOWtCOOLINGINBOARDANDOUTBOARDISOLATIONVALVES.THISWAS'iAIACTA/ION'DFANENGINEEREDSAFETYFEATURE.ESF~6'EVET'HA'NOT'RE-OCCURREDASOF10/6/86NOFURTHERACTIONSAREPLANEO.'EFMASTERSOOR2-86-171.C,LOSEP'A'OOPRHRUNITIIINOP.UNABLETOCOMPLETES0-149-002.CLOSEPRHRLOOP'BiTESTCHECKVALVE1F0508REC'DDUALINDICATIONSISIWASPERFORMEDANDENG.ANALYSISWASMADETHATVLV.FUNCTIO((SPROPERLY.

PMIS:E4910/02/95'USQUE>...SESSOORSUMMARYREPORTFORSYS49-UNIT0/1SORTEDBYUNIT,ISSUEDATE&SOOR11PMISSYSSOORNOCCURDATEDESCRIPTION4984299OTHERAFFECTEDSYS:4984-3167/21/848/20/84CLOSEDRHRLOOP'8'QUALIZERVALVE1F1228DUALINDICATION.VLV.VERIFIEDCLOSEDBYVENTINGUPSTREAMPIPING,NOPRESSUREORFLOWWASOBSERVED.WA544361WILLREWORKTHEPOSITIONSWITCHWHICHISSUSPECT.REQUIRESCONTAINMENTENTRY.CLOSEDRHR"8INOPDUETOFAILEDISI.SO'SWILLBEREVISEDTOREFLECTTHE96HOUREVALUATIONSTATEDINTHEASMECODE.CLOSED.OTHERAFFECTEDSYS:4984-47412/19/84-49j~'84-344M="-'-9/'11/84'A'HRSUPPRESSIONPOOLCOOLINGFULLFLOWTESTVALVEINOP.VALVE1F024A.ACTUATORPINIONGEARKEYWASMISSING.WA544663REPLACEDKEYANDRESTOREDSYSTEM.NQAREVIEWREQ.DELETEDPEROPS-5R.B.CLOSED'RHRF028AVLV.BINDINGANDREPEATEDLYTRIPPINGBREAKER.INVESTIGATEOBY.MNT&PACKING'WASLUBED&ADJUSTED,VLV.THEN"OPERATEDPROPERLY.CLOSED4984-4834985-049OTHERAFFECTEDSYS:64834985-09249e85-1324985-1544985-1454985-1504985-18312/25/842/01/853/04/854/27/855/15/855/16/855/20/856/08/86"HIGHPRESSISOLATIONOFRHRSDCOOLING,HV151F009WOULDN'TCLEARNECESSARYTOISOLATE/VENTPRESSSWITCH831-N018ATOOPENVALVE.PMR86-7026WILLPROVIDECORRECTIVEh1EASURESWHICHWILLBETRACKEDBYMASTERSOOR2-85-032.CLOSEDEXCESS,FLOWCHECKVALVESFAILEDSURVEILLANCETEST.XV-821-F072CFAILEDTOISOLATE,XV-831-F057AFAILEDTOREOPEN&XV-831-F0038FAILEDTOISOLATE.WAS50048REPLACEDBLOWNFUSE.CLOSEDTODCCRADIOGRAPHYSOURCEWOULDNOTRETRACTINTOIT'SHOLDER,DURINGRHR178VALVEWELDINSPECTOIN.++CANCELLED/DOC~~BYPASS1-85-046REMOVEDCAUSINGLOSSOFSHUTDOWNCOOLINGISOVLVROOTCAUSEWASSTATESLINKSWEREOPENEDINPNL.1C201TOIMPLEMENTPMR82-434,ANDTHISACTIONWASNOTDOCUh1ENTED.WA-551134INVESTIGATEDANDCORRECTED.REF.MASTERSOOR2-85-112CLOSED.RHRINIATIONPERMISSIVESETPOINTPS-831-1N0188OUTOFTOL.FOUNDDURINGSI149-304,WASRE-CAL'ED.SAT.CAUSEDBYINSTRUX1ENTDRIFT.CLOSEDRHRMINFLOWVALVETIMEDELAY,FOROPENING,DIDNOTFUNCTION.1F007A.STATUS:REF.MASTERSOOR1-85-150CLOSED1F007AOPENEDTOSUPPRESSIONPOOLWHILERUNNING'A'HRPUMPFOPSHUTDOWNCOOLING..WA-551403INVESTIGATEDANDEVENTCOULDNOTBEDUPLICATEDNORACAUSEDETERlhIPPD.'LOSEDWATERHAMMEROCCURREDWHEN'A'HRPUMPWASSTARTED.DUETOPIPING'EINGDRAINEDAND-OP-149-00'OTBEINGPERFORMEDPROPERLY.)NVOI.VEDOPERATION'SPERSONNELWERECOUNSELED.

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PMIS.4910/02/95SUSQNNASESSOORSUMMARYREPORTFORSYS49-UNIT2SORTEDBYUNIT,ISSUEDATE6SOORNPMISPAGE21SYSSOORN492-92-126OTHERAFFECTEDSYS:492-92132OTHERAFFECTEDSYS:69492-92-133OTHERAFFECTEDSYS:54993460OTHERAFFECTEDSYS:4993-458OTHERAFFECTEDSYS:4993-461OTHERAFFECTEDSYS:4993-467OTHERAFFECTEDSYS:4994-175OTHERAFFECTEDSYS:4994-241OTHERAFFECTEDSYS:4994-240OCCURDATE10/15/9210/26/9210/26/9212/11/9312/19/9312/21/9312/21/933/15/944/02/944/07/94DESCRIPTIONRELIEFVALVEONTESTPUMPBLEWOFFDURINGSE-249-202.PRESSUREWASAT800PSI.WORKERWASDRENCHEDWITHWATERBUTNOTCONTAMINATED.THETESTSKIDWILLBEREWORKEDTOELIMINATECOMPRESSIONFITTINGSONRELIEFVALVES.CLOSEDLOOSETERMINATIONONTERMINAL81OFRELAY821H-K59CAUSEDTHERELAYTODE-ENERGIZE.OCCURREDDURINGPCISTESTINGUNDERSE-269-200FORDCP92-9006.CLOSED.SHUTDOWNCOOLINGVALVESISOLATEDDUETOGROUNDEDLEAD,ESFACTUATION.HV-261F009ANDHV-251F015ACLOSED.ERTREQUIRED~DETERMINEDCAUSESWERE:1)LEADWASNOTTERMINEATED.2)INVOLVEDPERSONNELDIDNOTPLANFOREVERYPOSSIBLEFAILURE.3)TIGHTWORKSPACE/PHSICALLYDIFFICULT.REFPLAS648.CLOSEDRHRHV-251-F0038FAILEDTOOPENFOLLOWINGCLOSUREWHILEINSDC.SiTHEVALVEWASCLOSEDBECAUSECOOLDOWNRATEWASTOOHIGH.OPSINVESTIGATIONFOUNDTHEVLVBREAKERTHERMALSHADTRIPPED.DETERMINEDCAUSEWASTHERMALBINDING'P-149/249-002WEREREVISEDTOPREVENTRECURRENCE.CLOSEDVACUUMSUCKEDVLVBONNETFORHV-261F0038BACKONTOVLVBODYDURINGWAV33836BREACHANDDISASSEMBLYONTHERHRSYSTEM.THEBONNETWASRE-INSTALLEDTOTERMINATETHEVACUUMLEAKAGE.ERTREQUIRED.NDAP-QA-0302REV3ISSUED.OPSREVIEWEDTHEEVENT.MAINTREVIEWEDTHISEVENTWITHMAINTPLANNERS.CLOSEDRHRRADWASTEVENTVLV261-811FOUNDUNCAPPEDCONTRARYTOCLWHICHREQUIRESITTOBECAPPED,CL-249-0018.PROBABLECAUSEWASDURINGFILLANDVENTEVOLUTION.OPSWILLREVIEWTHISEVENT.MOATRAININGCYCLE94-1COMPLETE.CLOSEDPOTENTIALSTATUSCONTROLEVENTWHENWRONGDIVRHRCLIMPLEMENTEDROOTCAUSEOFTHISOCCURRENCEWASOPERATORERROR.ANINDEPENDENTVERIFICATIONWASPERFORMED.MOA94-1REVIEWEDTHISEVENTSSOOR93-201WILLADDRESSVALVELOCKINGPOLICY/METHODS'LOSEDHANDWHEELFORRHRLOOPAINBOARDINJECTIONTESTVLVOFFOFSTEMSFOUNDONGRATING.VLV251063.CONDITIONWASFOUNDDURINGINITIALDRYWELLENTRYFOLLOWINGSHUTDOWN.INVESTIGATIONFOUNDTHEVALVESTEMHADFAILEDDUETOHIGHSTRESSLOADINGANDPOORDESIGNSTHEVALVEWASREPLACEDWITHADIFFERENTDESIGNPERWAV43319RIE940081.CLOSEDMATERIALCUTFROMPIPEHANGERCLAMPW/0WORKINSTRUCTIONSORENGINERINGANALYSIS.HANGERGBB-205-H89~WAV43467.HEDETERMINEDCAUSEWASMIS-INTERPRETATIONOFTHEWORKPLANBYTGROUPFOREMAN.NCR94-079,CALEC-049-1007'SE-AS-ISDISPO.MAINTCONDUCTEDTRAININGONTHEEVENT.CLOSEDSCAFFOLDINGINTERFEREDWITH'8'HRDISCHCHECKVALVECLOSING.SCAFFOLDINGBUILTNEARTHE'8'UMPDIDNOTALLOWTHECHECKVALVEHANDLETOSWINGFULLYINTHECLOSEDPOSITION.TRAININGWASCONDUCTEDFORTHE'DRAIN'REWS.

PMIS:EVR4910/02/95SUSQUEHANNASESSOORSUMMARYREPORTFORSYS49-UNIT2SORTEDBYUNIT,ISSUEDATE6SOORNPMI5PAGE22SYSBOORNOCCURDATEDESCRIPTIONOTHERAFFECTEDSYS:4994245OTHERAFFECTEDSYS:60,624994-249OTHERAFFECTEDSYS:4994-254OTHERAFFECTEDSYS:4994-266OTHERAFFECTEDSYS:4994-283OTHERAFFECTEDSYS:4994-356OTHERAFFECTEDSYS:4994-366OTHERAFFECTEDSYS:4/08/944/10/944/10/944/17/944/29/945/29/946/04/94CLOSEDFLOORDRAINSBACKEDUPWHILEDRAININGDIVIiRHRUSINGFLOORDRAINSINTHRRHRPIPEWAY.HPCIANDRCICROOMSWERECONTAMINATED'00SQFEET,LVLWASBKWET.REFACR94-10.THEDRAINBLOCKAGEWASCLEARED.01-AD-055REV8INCLUDESDIRECTIONTOMONITORFLOORDRAINSDURINGDRAININGEVOLUTIONS.CLOSEDWATERLEAKEDFROMRHRHV"251-F050APRESSURESEALRESULTINGINDRYWELLAREACONTAMINATION.400SQFEET,LEVELSWERE20,000DPMWET.REFACR94011.DETERMINEDCAUSEWASWHENTHEVALVEBONNETWASRAISEDUNEVENLYINTHEINITIALRE-INSTALLATION,RESULTINGINITBEINGCOCKED1/4INCH.PROPERADJUSTMENTWASMADE,.CLOSEDDURINGLLRTDRAINVLV251018WASFOUNDOPENVS:CLOSEDASREQUIREDBYTHELLRTLINEUP.THEVALVEWASOPENED-BYOPSTOSUPPORTDRAININGOFTHERHRSYSTEM.THELLRTTAGWASNOTNOTICEDBYTHEOPERATOR.CORRECTIVEACTIONTRACKEDUNDERSOOR94-245.CLOSEDPOTENTIALEXISTEDFORHIGHFLOWISOLATIONFOLLOWINGSE-249-203DUETOVALVECONFIGURATIONONINSTRUMENTATION.THESUPPLYVLVSTOTHESWITCHESWEREOPENEDPRIORTOTHEROOTVALVESBEINGOPENED.PCAF'5WEREISSUEDTOTHEAPPROPRIATE'SE'ROCEDURESTOPREVENTRECURRENCE.CLOSEDAMBERLIGHTFORHV-251-F049BLEWWHENHSS-25111AWASPLACED.INTHEEMERGENCYPOSITIONDURINGTP-200-'010.THEBULBWASREPLACEDANDTHEEVENTWASREPEATED.TPWASHALTEDANDINVESTIGATIONINITIATED.DMGUPDATEDRSPSCHEMATICSTOREFLECTCORRECTRESISTANCEVALUES.CLOSED.86DRHRPUMPDISCHARGECHECKVALVESNOTSEATINGTOMAINTAINKEEPFILLPRESSURE:CONDITIONFOUNDDURINGRESTORATIONOFSE-224-207'HEA6CRHRCHECKVALVESWEREFOUNDNOTCLOSEDDURINGPREPARTIONFORTHEVESSELHYDRO.INVESTIGATIONFOUNDTHEVALVEDISKSTOPSWERETOOSHORT,VENDORERROR.PORC94-136REVIEWEDRESO.REFPLI78723.'.ACT:TRNG-INCLUDETHISEVENTINENGRCONTINUINGTRAININGMNTSAIE06393.TRNGSAIE06395~REVIEWRIEPROCEDURES.RHRKEEPFILLISOLATEDWITHOUTTAXINGPUMP4XVMOTORBKRSOOS,RESULTINGINCONFIGWITHPOTENTIALFORWATERHAMMER.THEDCKNIFESWITCHESWEREOPENEDANDYELLOWTAGGEDTOPREVENTPUMPSTART.PCAF1-95-1016REVISEDNDAP-QA-0323N.ACT:CMPL-CLOSUREr22TOTAL:105

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References:

1EquipNostIB246-02I9540691494/265YESNONODURINGPERFORMANCEOFTP-059-001,ITWASNOTEDTHATSEVERALNUTSONTHEBOTTOMSUCTIONSTRAINERSFORRHRWERENOTPROPERLYTORQUED..Description:DURINGTHECOURSEOFTP-059-001(SUPPRESSIONPOOLDEBRIS/SUCTIONSTRAINERINSPECTION),ANUTONABOTTOMRHRSUCTIONSTRAINERWASFOUNDNOTPROPERLYTORQUED.WHENTHEDIVERROTATEDTHENUT,BOTHNUTSANDTHESTUDWEREFREETOROTATE.OTHERNUTSONTHESTRAINERWERECHECKEDANDATOTALOFFIVEWEREFOUNDONTHE'A'OWERSTRAINER.

References:

,WAS53415EquipNos:IF407BIF409BIF4IOBRptSystem

SearchonSystemNumber:49CRNO.UNITSYS//EVENTDATENC2OPAFFECTED?REPORTABLE?LEVELRESOCLOSEDREPEATREPEATFF?FF?MPFF?MPFF?NOI95-92'9.'-'vP~THE2DRHRPUMPTRIPPEDDUETOANAPPARENTMOTORBURNUP.5/8/95YESYESRCA2/8/96Description:WHENTHE2DRHRPUMP,2P202D,WASSTARTEDFORSUPPRESSIONPOOLCOOLING,APLANTOPERATORMONITORINGTHEPUMPFROMASAFEDISTANCEOBSERVEDSPARKSANDFLAMESCOMINGFROMTHEMOTORVENTLOUVERS.HEIMMEDIATELYRADIOEDTHECONTROLROOMPCOANDHADTHEPUMPSHUTDOWN.PUMPOPERATINGPARAMETERSASVIEWEDFROMTHECONTROLROOMAPPEAREDTOBENORMALDURINGTHEPERIODFOLLOWINGTHEMOTORSTART.INITIALINVESTIGATIONHASIDENTIFIEDDAMAGETOTHEMOTORWINDINGS.OILWASSEENTOBEDRIPPINGINSIDETHEMOTORCASINGONTOTHEROTORANDAFILMEXISTEDONTHEVENTLOUVERS.OILWASALSODRIPPINGFROMTHEMOTORCASINGONTOTHEFLOOR.ADDITIONALLY,PUMPGROUNDOVERCURRENTRELAYTARGET50AGHADTRIPPEDDURINGTHEEVENT.YES

References:

SPECEI107WAV50299EquipNos:2P202DFLAMESEMANATINGFROMTHEPUMPMOTOR,PRESENTFORONLYAFEWSECONDS,DIDNOTREQUIREANYMANUALINTERVENTIONBEFOREDYINGOUTONTHEIROWN.THECONTROLANDTRIPDCKNIFESWITCHWASOPENEDTOPREVENTSTARTOFTHEPUMP.9542062495/11/95NONOpŽpltp~POSSIBLEPUMPSEALDAMAGEON2DRHR.Description:NOINVEST0/10/95

References:

EquipNos:2DRHRPUMPMOTORWASREMOVEDPERMT-049-002.MT-049-001RHRPUMPDISASSEMBLY/REASSEMBLYSTEP-BY-STEPCONDITIONALWASNOTREFERENCEDANDSTEPS5.1.1PAND5.1.1DWERENOTPERFORMEDASREQUIRED.2RptSystem SearchonSystemNumber:49CR,NOUNITSYS//EVENTDATENC?OPAFFECTED?REPORTABLE?.LEVELRESOCLOSEDREPEATREPEATFF?FF?MPFF?MPFF?NOINVEST0/10/959542682496/20/95NOYES4@"%pA(c6ASFOUNDVOTESTESTOFBV=251F0278DATED6/20/95RESULTEDINFINALMEASURED.THRUST35781LBSEXCEEDINGALLOWABLELIMITOF19340LBSPERDRAWINGM-1395.SEEEWRATTACHED..Description:ANELECTRICALCALIBRATIONWASPERFORMEDINANASFOUNDCONFIGURATION.MEASUREDTHRUSTSEENWAS35781BLS.THEVOTESTESTIMMEDIATELYFOLLOWEDWITHAMAXIMUMTHRUSTOF34129LBS.(EQUIPMENTERRORNOTINCLUDED).THEALLOWABLELIMITOF19340LBSISBASEDONEXTENDEDACTUATORTHRUSTRATING.

References:

EWRM58023EquipNos:IIV251F027B3RptSystem SearchonSystemNumber:49CRNO.UNITSYSItEVENTDATENC?OPAFFECTED?REPORTABLE?LEVELRESOCLOSEDREPEATREPEATFF.FF.MPFF?MPFF795-0344149S/1185YESNONO2RCA0/12/955gI,'ftw(o'c~UgY,=,IS,IF02'PMAYBEINADEGRADEDCONDITIONBECAUSEOFPOTENTIALSIGNIFICANTOVERTHRUSTRESULTINGFROMITTIPPINGITSTHERMALOVERLOADS(REFERENCEWAS21676DATED11/25/92).INADDITION,TORQUESWITCHREPLACEMENTWASPERFORfvKDASPARTOFINVESTIGATIONANDNOPOSTMAINTENANCEVOTESTESTWASDONE.THISISINVIOLA@ONQFAD-QA-531,THEPROCEDUREINEFFECTATTHETIME.Description:DURINGAREVIEWOFHV-151F027BVALVEMAINTENANCEHISTORY,ITWASDISCOVEREDTHATTHEMOVTRIPPEDITSTHERMALOVERLOADSTWICE(REFERENCEWAS21676DATED11/25/92),INDICATINGTHATPOTENTIALSIGNIFICANTOVERTHRUSTANDOVERTiORQUE@ASOCCURRED.INANINVESTIGATION,ADEFECTIVETORQUESWITCHWASFOUND.TfgWADOCUMENTEDTORQUESWITCHREPLACEMENTWASPERFORMED;HOWEVER,THEREWAgQOEVIDENCEOFAPOST-MAINTENANCEVOTESTEST.THEDATEOFTHELATESTVOTESTESTPEQ~ORMEDOg~ISMOVIS4/18/92(WAS10396).aTWOCONCERNSEXIST1.THEMOV)MAYBEINADEGRADEDCONDITIONPECAN:.SEOFTHESIGNIFICANTOVERTHRUSTANDOVERTORQUERESULTINGFR(/II'f@PPIhPITSPfEQUALOVERLOADS.-

References:

WAP34011WAS51119WAS51144EquipNos:HVISlF027B2.NOTPERFORMINGAPOST-MAINTENANCEVOTESTESTFOLLOWINGTORQUESWITCHREPLACEMENTISINVIOLATIONOFAD-QA-531,REV.0,ATTACHMENTBSECTION1.9WHICHWASINEFFECTATTHATTIME.RptSystem SearchonSystemNumber:49CRNOUNITSYS//EVENTDATENC?OPAFFECTED?REPORTABLE?LEVELRESOCLOSEDREPEATREPEATFF?FF?MPFF?MPFF?NONO95-04002492/23/96ANOU'A/0'~g,~~~~MOVDATADETAILDRAWINGM-l404FORVALVETAGNO.EV2/lIF102RCONTAINSTHEINCORRECTSTEMMATERIAL(ASTMA-582GR416VERSUSTHEACTUALMATERIALSA-564GR-630.)Description:DURINGREVISIONOFTHEMOVDATADETAIL,LIMITSWITCHSETTINGANDTORQUESWITCHSETTINGSFORHV251F103A(CALCULATIONNO.EC-049-0552),THEINCORRECTSTEM'MATERIALWASNOTED.THISINCORRECTSTEMMATERIALISINPUTTOTHEVOTESSOFTWAREFORVOTESTESTING.THEREFORE,BASEDONTHEINCORRECTSTEMMATERIAL,THEVOTESTHRUSTDATAFORTHISVALVEISOFFSET.

References:

CR95-0447WAV-50869EquipNos:HV251FI03A95-04372499/18/95NONONO2RCAFOREIGNPOTENTIALREVIEWWASNOTPERFORMEDPRIORTOPERFORMINGSE-259-100,TEST2.Description:WHILEPERFORMINGREVIEWFOLOWINGCOMPLETIONOFSE-259-100,ITWASNOTICEDTHATTHEPREREQUISITESINCLUDETHEFOREIGNPOTENTIALREVIEW.ATTHETIMESE-259-100,TEST2WASPRESSURIZED,PERMIT2-95-2001WASACTIVE.THESYSTEMPERMITSUPERVISORWASTHEONLYSIGN--ONONTHE2001PERMIT.THEPREREQUISITESWERECOMPLETEDPRIORTOPERFORMANCEOFTEST1ON9/14/95.ATTHATTIMEFOREIGNPOTENTIALREVIEWWASNO.

References:

EquipNos:RptSysteut SearchonSystemNumber:49CRNO.UNITSYS¹EVENTDATENC?OPAFFECTED?REPORTABLE?LEVELRESOCLOSEDREPEATREPEATFF?FF?MPFF?MPFF?954472249912885NONONO2INVESTNORHRCOMMONPIPINGCONTAINEDWATERALTHOUGHITWASTHOUGHTTOBECOMPI.ETELYDRAINED.Description:AR206A5(LIQUIDRWCOLLECTPANEL2C209SYSTEMTROUBLE)UNEXPECTEDLYALARMEDINTHECONTROLROOMON2C651ANDMOMENTSLATERAR207(DWFLOORDRNSUMPAHI-HILVL)ONIC601ALSOALARMED.RECORDERLR-26102AINDICATEDLEVELINTHE'A'UMPINCREASING.THEUNIT2PCOCONTACTEDTHEWORKCONTROLCENTERTOSEEIFANYONGOINGACTIVITYWASCAUSINGTHEINCREASEDSUMPLEVEL.THEWORKCONTROLCENTERSUSPECTEDAPSV(PSV251F126)REWORKTHATWASINPROGRESSSOANOPERATORWASDISPATCHEDTOINVESTIGATE.THECONTROLROOMPCOCONTACTEDTHEDRYWELLCOORDINATORTOINVESTIGATE.THEDWCOORDINATORREPORTEDTOTHECONTROLROOMTHATTHESUMPLEVELLOCALINDICATIONONEL.719WASSHOWING97%.HETHENWENTINTOTHEDRYWELLANDFOUNDTHESUMPFILLEDANDSLIGHTLYOVERFLOWING.THETEMPORARYSUMPPUMPCORDWASFOUNDUNPLUGGED.THEPUMPWASPLUGGEDINANDTHEPIPINGDRAINWASREDIRECTEDINTOADOWNCOMMER.

References:

EquipNostMECHANICALMAINTENANCEWASSIGNEDONTOANDWORKINGWITHINTHEBOUNDARIESOFSYSTEMPERMIT2-95-2000.THESUBJECTPIPINGWASPREVIOUSLYDRAINEDTOSUPPORTANLLRT(SE-259-030).RptSystem

SearchonSystemNumber:49CRNO.UNITSYS//EVENTDATENC7OPAFFECTED?REPORTABLETLEVELRESO'LOSEDREPEATREPEATFF?FF?MPFF?MPFF?95-051724910/9/95NONONO2INVESTNOHANGERDRAW1NGDCA-210-H1,REV.3DOESNOTREFLECTTHEACTUALPLANTINSTALLATIONOFDCA-210-HIDescription:WHILEPERFORMINGAVT3INSPECTIONONDCA-210-H1,ITWASNOTEDTHATTHEHANGERDRAWINGSHOWSITEM¹5TOBEASIZE20SPRINGCAN,HOWEVER,ASIZE19SPRINGCANISACTUALLYINSTALLED.FURTHERINSPECTIONSREVEALEDTHATGEMS¹3,$,6,),STHATAREACTUALYINSTALLEDINTHEPLANTAREDIFFERENTTHANWHATISSPECIFIEPQQTfg~GODDRAWINGBILLOFMATERIAL.THEDRAWINGSPECIFIESTHESEPARTSTOPEPPRP2.5'i%PLOPPRACKETTHEYAREACTUALLYFORA2.25"WELDEDBRACKET.THEWELDDE'JAP.OgTgEQQ~GSPECIFIESAFLAREBEVELWELDONTWOSIDESWITHAFILLETWELDONTPE'PVvqOPPOSESP)gS,THEACTUALFIELDINSTALLATIONDOESNOTHAVETHEFLAREBEVELWELDSPfSg+LED.D/SCU)SION'SWITHSITESYSTEMENGINEERINGANDTHROUGHTHEIRINVESTjGQTlqN6gTHE$$QVEOPTEDDRAWINGDISCREPANCIESISWASCONCLUDEDTHATASUPERSEQPD(ID'AS+COgPgPATEDINTOREV.3OFDCA-'210-HI.,I.ft

References:

EquipNos:RptSystem

SearchonSystemNumber:49CRNO.UNITSYSttEVENTDATENCTOPAFFECTED?REPORTABLE?LEVELRESO~'LOSEDREPEAT-REPEATFF?FF?MPFF.MPFF?95453924910/1485NONO1RCANODURINGPERFORMANCEOFSE-200-002"ASMECLASSIBOUNDARYSYSTEMLEAKAGE/HYDROSTATICPRESSURETESTING"RHRHEADSPRAYIBSHUTOFFHV-251F022AUTOCLOSED.ESFACTUATIONDescription:STEP6.1.8OFSE-200-002,OPENSRHRHEADSPRAYIBSHUTOFFHV-251F022.DURINGRPVPRESSURIZATION,ITWASNOTICEDTHATTHEF022VALVEHADCLOSED.THISOCCURREDDURINGTHE2PERFORMANCESOFSE-200-002ON10/13/95AND10/14/95WHENPRESSUREWASABOVE98PSIG.ATNOTIMEINTHISPROCEDUREISTHISVALVECLOSED,INTERLOCKDEFEATEDORIDENTIFIEDTHATTHISVALVEWOULDAUTOCLOSE.tNSE/PNSSWASNOTIFIEDOFTHESEOCCURRENCESANDCONCLUDEDTHATTHEVALVEWOULDAUTOCLOSE,IFOPENED,WHENRPVPRESSUREISGREATERTHAN98PSIGVIARELAYB21H-K82INPANEL2C622(REF.8856-Ml-B21-101(10)).STEP6.1.15WOULDHAVEPREVENTEDTHISISOLATIONTOOCCUR,BUTTHISSTEPISONLYPERFORMEDDURINGTHE"HYDRO"NOTTHE"SYSTEMLEAKAGE"PRESSURETEST.(ONTHESEDATESSE-200-002SYSTEMLEAKAGETESTWASBEINGPERFORMEDNOTTHEHYDRO.)

References:

LER388/95-013EquipNos:HV25IF02210RptSystem

SearchonSystemNumber:49CRNOUNITSYS//EVENTDATENC?OPAFFECTED?REPORTAIILE?LEVELRESOCLOSEDREPEAT'EPEATFF?FF?MPFF?MPFF~95-066424911/16/95NONO2RCANOINCORRECTTHERMALLOAD.CASEWASUSEDTOQUALIFYTHENEWSURROGATEASSEMBLIESFOR.PSV251F055A&BVALVESREPLACEMENT.THETHERMALLOADCASEUSEDWASUNCONSERVATIVE.Description:.DURINGTHEPREPARATIONOFTHEUNITICALCULATIONSFORTHEPSV151F055A&BVALVEREPLACEMENTS,THEUNIT2CALCULATIONEC-PIPE-6027WASREVIEWEDTODETERMINEIFTHESURROGATEASSEMBLIESSMILARTOTHEUNIT2MODIFICATIONCOULDBEUSEDINTHEUNIT2MODIFICATIONCOULDBEUSEDINTHEUNITIDCP.THEFOLLOWINGDISCREPANCYWASFOUND:

References:

EquipNos:UNIT2RHRPSV251F055A&BVALVESWEREREPLACEDWITHTHESURROGATEASSEMBLIESPERDCP94-9083..THESURROGATEASSEMBLIESWEREDESIGNEDTOSIMULATETHEREMOVEDVALVESINWEIGHTANDCENTEROFGRAVITY(CALCULATIONEC-PIPE-6027,REV.0).THEREFORE,THERERUNOFME101COMPUTER.PIPINGANALYSISWASNOTREQUIRED.HOWEVER,WEIGHT,THERMALANDSEISMICLOADINGWASEXTRACTEDANDUSEDTOQUALIFYTHENEWSURROGATESFORTHERHRVALVES.'HEUNIT2CALCULATIONEC-PIPE-6027,USEDINCORRECTTHERMALLOAD'CASETOQUALIFYTHEWELDSBETWEENTHE8"AND6"BLINDFLANGESONTHESURROGATEASSEMBLIES.THEREARESEVEN(7)THERMALLOADCASESINTHEEXISTINGMEIOICOMPUTERPIPINGANALYSIS,WHICHARELOCATEDINCALCULATIONSPLS-2643(EC-PIPE-0621)&PLS-2646(EC-PIPE-0677).THETHERMALLOADCASESAREDEFINEDBELOW:THRM01-MINIMUMFLOWBYPASSMODEPUMP"D"RUNNINGTHRM02-MINIMUMFLOWBYPASSMODEPUMP"B"RUNNINGIIIlTHRM03-POST-ACCIDENTCONTAINMENTSPRAYPUMPSB&DRUNNINGTHRM04-NORMALSHUTDOWNAFTERBLOWDOWNTOMAINCONDENSER,PUMP"D"RUNNINGTHRM05-NORMALSHUTDOWNAFTERBLOWDOWNTOMAINCONDENSER,PUMP"B"RUNNINGITHRM06-SYSTEMONSTANDBY,NOPUMPSRUNNINGRpISystem SearchonSystemNumber:49CRNO.UNITSYSttEVENTDATENCTOPAFFECTED?REPORTABLE?LEVELRESOCLOSEDREPEATREPEATFF?FF?MPFF?MPFF?THRMFA-FAULTEDTHERMALLOADCASE(POST-LOCATEMPERATURE)WITHMAXIMUMTEMPERATUREUSEDTOQUALIFYFORNOZZLEANDSUPPORTLOADS(SEENOTEBELOW)THELOADCASETHRM01-THRM06SHOULDHAVEBEENUSEDTOQUALIFYTHE8"AND6"BLINDFLANGESONTHEUNIT2MODIFICATION.HOWEVER,ONLYTHRMOIWASCONSIDEREDINTHEQUALIFICATIONOFTHESURROGATEASSEMBLY.THIS,RESULTEDINUNCONSERVATIVERESULTS.NOTE:POST-LOCAENVIORNMENTALTEMPERATURERISEISAFAULTEDCONDITIONANDANYEXPANSIONSTRESSRESULTINGFROMTHISCONDITIONISCLASSIFIEDASSECONDARY.CODEEVALUATIONClFPIPINGSTRESSES/PIPESUPPORTMEMBERSARENOTREQUIREDFORTHISFAULTEDCONDITIONPERBLP25976,DATEDI/23/84.12RptSystem SearchonSystemNumber:49CRNO.UNITSYS0EVENTDATENC?OPAFFECTED?REPORTABLE?LEVELRESOCLOSEDREPEATREPEATFF?FF?MPFF?MPFF?6614911/17/95NOCNO1DRHRPUMPFAILEDSURVEILLANCEACCEPTANCECRITERIAREGARDINGDPVELOPEDDIFFERENTIAL~PRESSURE.Description:CWHILEPERFORMINGSO-149-002ANDESTABLISHEDPHP.FLGWOFi0I~GPMTiIROUGHTHEHEATEXCHANGERASREADONTHEFLOWRECORDER,'PIEIDPIBPDlI<<;ERE1f'GALPRESSUREWASDETERMINEDTOBE247PSID.THEACCEPTANCECRIPOP.TIEIDIFIERPNjIALPRESSUREBETWEEN248AND272PSID.THEIBRHRPUMPPASSEYlTHEI(CCEPTA4QCECRITERIA,HOWEVER,WITHNOMARGIN(I.E,RECORDEDDPOF250WITHACCEPT'CE'IA~AZ.250-27tIPSID).-i.ii'~'h4ii/LPf<%'t'i",tit.'BSERVEDDIFFERENCESBETWEENFRANDFlVAQUEROLEAPTQ(UPlECTTHERECORDER'SACCURACY.THERECORDER'SINDICATIONAPPEARTSTOBELOWER~Q/tI.CT'PPL,I&6:P$SCONTACTEDTOINVESTIGATE.1&CDETERMINEDTHEFRINDICATIONOUTOFCALIBRATION.LOWP'PROXMATELYIKGPMANDRECALIBRATIONWASPERFORMEDUNDERWAS7212.THEBANDDPUMPSWERERETESTEDSATISFACTORILYWITHDIFFERENTIALPRESSURESOF273PSID(250-274ACCEPTABLE)AND267PSID(248-272ACCEPTABLE).

References:

EquipNos:FRElllR60813RptSystem

SearchonSystemNumber:49CRNOUNITSYS//EVENTDATENC.OPAFFECIED?REPORTABLE?LEVELRESOCLOSEDREPEATREPEATFF?FF?MPFF?MPFF?96-0111I49I/30/96NONO2CLOSURE2/2/96CONTAINMENTSPARYOP'SCHANGEDANDCONFLICTWITHSTATEMENTINFSAR.Description:ON11/21/95,PCAFSWEREPREPAREDTOALLOW,.CONCURRENTUSEOFLPCIANDDRYWELLSPRAY.THISCHANGEPROVIDEDMOREFLEXIBILITYINRESPONDINGTOPOSTULATEDTRANSIENTSTHATCAUSEANINCREASETOPRIMARYCONTAINMENTPRESSURE.PFACS1-95-1157AND2-95-0520WEREAPPROVEDANDDISTRIBUTED.

References:

EquipNos:ALATERREVIEWOFTHEFSARINDICATEDTHEFOLLOWINGEXCERPTFROMSECTION6.2.2.2-IFTHEOPERATORCHOOSESTOUSETHECONTAINMENTSPARY,HEMUSTOPENTHESPARYVALVESANDCLOSETHELPCIINJECTIONVALVE.CONTRARYTOTHEFSARSTATEMENTABOVE,THEPCAFSPERMITTEDLINE-UPOFBOTHLPCIINJECTIONANDDRYWELLSPRAYATTHESAMETIME.96-0138249.2/7/96NONO2CLOSURE2/9/96NODURINGPERFORMANCE.OFSI-249-309(18MONTHCAL.OFREACTORCOOLANTSYSTEMLEAKAGEHIPRESSURE)PSH-E11-2N018(SHUTDOWNCOOLINGSUCTIONHEADERHIGHPRESSURE)FOUNDPSH-E11-2N01&OUTOFALLOWABLEVALUE.Description:FOUNDASFOUNDVALVEONPSH-E11-2N018AT155.6PSIG.ALLOWABLEVALUEISLESTHANOREQUAL~TO142PSIG(148.7HEADCORRECTED).

References:

EquipNos:PSHEll2N01814RptSystem CRNO.UNITLEADGRPOPAFFECTED?REPORTABLE?LVLRESOTYPE974121NONO3CLOSUREEquipNos:SYSTEM:LEVELSWITCHLIS-821-2N024DFAILEDTOMEETACCEPTANCECI:ITERIASTEP6.2.15OFSI-280-311(A63867)EvcnlDate:Itrsu(:I<<sureI/24/97ScheduleActualLISD212N024D80')7-0I"2hIN'I'<)NO3(l.t)SI<ltiI'.quipNSY!<I'I:hl:INAI)VI!I(II'.NI'/OSCRAhlWASI(l;CEIVI.Dl)URI(iNTIII'ERFORMANCEOFSI-280-311.I'.vrntl)atr:It<'<<<Ctu<<irr1/24/97<:rhi<IntrA<'tu:ilI".iil2I?N<<31)nn97-0123hIVI'COIIIII.CfCOi4l)ITIONEquipNus:8YS'II'.hI:HAIRPINCLIPMISSINGONOA510-005CUBBSHUTTERACTUATIONLEVERHINGEPIN.ScheduleActualOASIOEventDate:I/21/97RcsuClos<<re3/2<//97974124NUCTNONODEGRADEDCOND.DEMIN.RESINPERFORMANCE.2CAUSEDETERMINATIONScheduleActualEventDate:I/24/97Reso5/30/97ClosureEquipNos:SYSTEM:39RptLIkePMIS' t