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MONTHYEARML17158B1502017-06-0808 June 2017
Meeting Slides for High Pressure Safety Injection Pump AB Pre-submittal Public Meeting Relief Request Per 50.55a(Z)(2)for Waterford Steam Electric Station, Unit 3
Project stage: Meeting
ML17150A4122017-06-0808 June 2017
Request for Presubmittal Public Meeting Relief Request from Asme Code Requirements for High Pressure Safety Injection (Hpsi) Pump AB Testing Requirements
Project stage: Meeting
ML17174B1922017-06-29029 June 2017
Summary of June 8, 2017, Category 1 Teleconference with Entergy Regarding Planned Request for Alternative Regarding High Pressure Safety Injection Pump for Waterford Steam Electric Station, Unit 3
Project stage: Meeting
2017-06-29
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[Table view] |
Text
HIGHPRESSURESAFETYINJECTIONPUMPABPRESUBMITTALPUBLICMEETINGRELIEFREQUESTPER50.55a(z)(2)WATERFORD3 JUNE8,2017 1 HPSIABReliefRequestPreSubmittalMeetingIntroductions JohnJarrell-RegulatoryAssuranceManager BenSheppard-InServiceTestingEngineer MichelleGroome-SystemsEngineer MariaZamber-RegulatoryAssurance 2 HPSIABReliefRequestPreSubmittalMeeting*Overview*AdverseCondition,Testing,andCorrectiveActionRequirements
- PreviousReliefRequest*ProblemwithRefurbishment
- PumpPerformanceData/Analysis
- ProposedAlternative 3Agenda Overview*EntergyisrequestingreliefoftherequirementtoperformtheISTComprehensiveTestoftheHPSIABpump.*Testisrequiredtobeperformedata39weekfrequencyduetotherequirement(ISTB 6200(a))todoublethefrequencyifaparametervalue(inthiscase,vibration)fallswithintheAlertrange.*HighvibrationnotedduringRF20(Nov2015)andreliefpreviouslygrantedforCycle21.*PumpcouldnotberefurbishedduringRF21,thereforereliefisagainbeingrequestedforCycle22.4 HighPressureSafetyInjectionPumpAB*PumpSI MPMP 0002ABistheinstalledspare(maybealignedtoeithertrain).*Safetyrelated,horizontallymounted,ninestage,centrifugalpump.*ManufacturerisIngersollRand(Model4X9C9).*Ratedfor405gpmwith2830feetofheadat3575rpm.*GroupBpump.5 AdverseCondition-HighVibration*ComprehensivePumpTestperformedduringRF20(Nov2015)identifiedhighvibrationinthealertrangeatvibrationpoints3H(inboardbearing)and4H(outboardbearing).*Causeofhighvibrationattributedtobeginningstagesofendoflife.6 TestandCorrectiveActionRequirements
- ComprehensivePumpTestrequiredtobeperformedon18monthfrequencyduetolengthofWF3OperatingCycles.*Correctiveactionrequiresthatiftestparametervaluefallswithinalertrange,frequencyshallbedoubleduntilthecauseofthedeviationisdeterminedandtheconditioniscorrected.
- Comprehensivetestcanonlybeperformedwhenreactorisshutdown(Mode6).7 PreviousReliefRequest/Precedent*ReliefpreviouslygrantedforWaterford3onJuly6,2016forOperatingCycle21[ML16182A270].
- ApprovalgrantedtoperformGroupAtestonaquarterlybasisinordertomonitorvibrationwhileonlineinordertoidentifyiftheconditionwasworsening.
- Pumprefurbishmentwasscheduledtobeperformedduringthe21strefuelingoutage(RF21).8 ProblemwithRefurbishment
- NewHPSIABshaftdamagedbyfabricatoranddeemedunusable*PumpisuniquetoWaterford3andArkansasNuclearOneandsparematerialsnotavailable.*LeadtimeforanewshaftwasbeyondthestartdateofOperatingCycle22.*Inpreparationforrefurbishment,pumpwasuncoupledfrommotor,thenrecoupledwhenrefurbishmentcouldnotbecompleted.Noadditionalmaintenancewasperformed.
9 PumpPerformance
- Pumpexhibitssatisfactoryhydraulicperformancewithnodegradingtrend.*TSflowsurveillancerequirementsaresatisfactory.
- VibrationmeasurementsobservedduringCycle21GroupAtestingwereelevatedyetacceptable.
- AftertheuncouplingandrecouplingofthepumpjustpriortoRF21,thevibrationswerenotedtohavebeenreducedsignificantly,andareofthesamemagnitudeasvibrationmeasurementsrecordedduringthecomprehensivetestofRF21.10 ChangeinVibrationReadings Engineeringevaluationdeterminedthattheuncouplingandrecouplingperformedatthebeginningoftherefurbishmentattemptaffectedthevibrationreadings;however,thisisnotthemostlikelycauseoftheincreasedvibrationsidentifiedinNovember2015andthereforeEntergycannotsaythattheoriginalconditionhasbeenresolved.DuetothecircumstancespresentedbythefactthattheHPSIABpumpcouldnotberefurbished,theoriginalconditionthatcausedtheelevatedvibrationhasnotbeencorrected.
11 HPSIABComprehensiveData 12DateOutage Flow Rate (gpm)DP (psid)Pump Bearing Vibrations (in/sec)3H3V4H4V4A 10/28/2009RF16404.0 1202.00.2670.1910.2520.2660.05004/16/2011RF17422.81184.20.2350.1610.2410.2500.058 12/18/2012RF18411.0 1215.00.2490.1660.2260.2340.049 04/19/2014RF19411.21190.70.0900.0830.0700.0720.05811/03/2015RF20406.01194.50.3320.1910.3360.2300.08811/23/2015RF20408.51202.20.3970.2250.3990.1790.078 4/21/2017RF21411.61194.70.2130.1240.2190.1410.042Note:Alertrangeis0.325<V0.700in/sec HPSIABTSDPSurveillanceData 13Cycle 20Cycle 21DateDP (psid)DateDP (psid)06/10/20141491
.003/09/20161492.309/09/20141462
.006/07/20161466.212/12/20141491.509/09/20161467.403/05/20151466.512/01/20161470.106/02/20151471.603/10/20171474.109/04/20151497
.004/07/20171468.5Note:TSrequiresaDPgreaterthanorequalto1429psid.
HPSIABTSFlowSurveillanceData 14Note:TSrequiresthatthesumofinjectionlineflowratesshallbe>675gpm.Eachpumpmustperformwithahotlegflowrategreaterthanorequalto436gpmandwithin+/-10%ofcoldlegflow.DateOutage TS 4.5.2(h)
Cold Leg Flow (gpm)Cold Leg Flow (gpm)Hot/Cold Leg Flow (gpm) 90%Cold Leg Flow Hot Leg Flow110%Cold Leg Flow 10/28/2009 RF16687441.0 396.9 0463.7485.1 004/16/2011 RF17695466.0 419.4 0 455.0 512.6 0 12/18/2012 RF18706451.0 405.00 458.0 496.00 04/19/2014 RF19 (Header B)708422.0 379.8 0455.2464.2 0 05/06/2014 RF19 (Header A)689459.0 413.00 441.0 505.0011/03/2015 RF20 (Header A)680454.0 408.6 0 445.0 499.4 011/23/2015 RF20 (Header B)694442.0 397.8 0 462.0 486.2 0 4/21/2017 RF21 (Header B)678417.8376.0 0457.5459.6 0 4/21/2017 RF21 (Header A)679.8443.5399.2457.9487.8 HPSIABGroupATestData(Cycle21)15 DateDP (psid)Pump BearingVibrations3H3V4H4V4A 03/09/2016 1376.20.2780.2200.3100.2920.062 06/07/2016 1347.50.2820.2100.2310.2860.072 09/09/2016 1335.2 0.27 0 0.20 0 0.29 0 0.29 0 0.07 0 12/01/2016 1340.5 0.26 0 0.20 0 0.24 0 0.30 0 0.06 0 03/10/2017 1336.6 0.28 0 0.25 0 0.23 0 0.31 0 0.05 0 04/07/2017 1345.00.1430.1420.1510.2230.050Note:At250gpm,eachHPSIPumpmustachieveaminimumof1312.1psid,whichincludesinstrumentaccuracy,inordertofulfilltherequirementsofDesignBasisCalculationECM05 003.
Analysis*PumpdischargeflowhasconsistentlyachievedTSflowrequirements.
- PumphasachievedTSDPrequirementsduringeachquarterlysurveillanceduringOperatingCycle20andOperatingCycle21.*PumphasbeenwithinISTComprehensivetestDPacceptancecriteriawithnodegradingtrendinpumphydraulicperformance.
16 Conclusion 17 TheprecedinginformationdemonstratesthateventhoughtheHPSIABpumpisinthebeginningstagesofend oflife,itisremainscapableofperformingitssafetyfunctionforitsmissiontime.
ProposedAlternative 18*ReliefwillberequestedtoallowperformanceoftheGroupAtestonaquarterlybasisinlieuoftheComprehensiveTestforthedurationofCycle22,essentiallyidenticaltothereliefgrantedforCycle21.*Datawillbeanalyzedtoensurethattheperformanceisintheexpectedrange,providingassurancethatthepumpwillcontinuetobeoperationallyreadyforthedurationofthecycle.
Closing*ExpectedsubmittaldateisJuly6,2017.*ApprovalrequestedbyFebruary3,2018toensurethatreliefisobtainedpriortothetimethattestingwouldneedtobeperformed,whichis39weeksfollowingtheprevioustestduetotheincreasedtestingfrequencyrequirement.
- Thankyouforyourtimeandconsideration.
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