CNL-14-212, Expedited Seismic Evaluation Process Report (CEUS Sites) Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Re Recommendation 2.1 of the Near-Term Task Force Review of Insights from Fukushima Dai-ichi Accident

Expedited Seismic Evaluation Process Report (CEUS Sites) Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Re Recommendation 2.1 of the Near-Term Task Force Review of Insights from Fukushima Dai-ichi Accident

ML14365A072
Person / Time
Site:	Watts Bar
Issue date:	12/30/2014
From:	James Shea Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
CNL-14-212
Download: ML14365A072 (111)

Text

Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 CNL-14-212 December 30, 2014 10 CFR 50.4 10 CFR 50.54(f)

Attn: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001



Watts Bar Nuclear Plant, Unit 1 Facility Operating License No. NPF-90 NRC Docket No. 50-390 Watts Bar Nuclear Plant, Unit 2 Construction Permit No. CPPR-92 NRC Docket No. 50-391

Subject:

Tennessee Valley Authoritys Watts Bar Nuclear Plant Expedited Seismic Evaluation Process Report (CEUS Sites) Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident

Reference:

NRC Letter, Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3, of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident, dated March 12, 2012 (ML12056A046)

On March 12, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued the referenced letter to all power reactor licensees and holders of construction permits in active or deferred status. Enclosure 1 of the referenced letter requested each addressee located in the Central and Eastern United States (CEUS) to submit a Seismic Hazard Evaluation that includes an interim evaluation and actions taken or planned to address the higher seismic hazard relative to the design basis, as appropriate, prior to completion of the risk evaluation.

In accordance with the referenced letter above, TVA is enclosing the Expedited Seismic Evaluation Process (ESEP) Report for Watts Bar Nuclear Plant.

U.S. Nuclear Regulatory Commission CNL-14-212 Page 2 December 30, 2014 There are no new regulatory commitments resulting from this submittal. Should you have questions concerning the content of this letter, please contact Mr. Kevin Casey at (423) 751-8523.

I declare under penalty of perjury that the foregoing is true and correct. Executed on the 30th day of December 2014.

Respectfully, J. W. Shea Vice President, Nuclear Licensing

Enclosure:

Expedited Seismic Evaluation Process (ESEP) Report for Watts Bar Nuclear Plant cc (Enclosure):

NRR Director - NRC Headquarters NRO Director - NRC Headquarters NRR JLD Director - NRC Headquarters NRC Regional Administrator - Region II NRR Project Manager - Watts Bar Nuclear Plant, Unit 1 NRR Project Manager - Watts Bar Nuclear Plant, Unit 2 NRR JLD Project Manager - Watts Bar Nuclear Plant NRC Senior Resident Inspector - Watts Bar Nuclear Plant, Unit 1 NRC Senior Resident Inspector - Watts Bar Nuclear Plant, Unit 2 J. W. Shea Digitally signed by J. W. Shea DN: cn=J. W. Shea, o=Tennessee Valley Authority, ou=Nuclear Licensing, email=jwshea@tva.gov, c=US Date: 2014.12.30 11:50:55 -05'00'

ENCLOSURE EXPEDITED SEISMIC EVALUATION PROCESS (ESEP) REPORT FOR WATTS BAR NUCLEAR PLANT

WattsBarNuclearPlantESEPReport

EXPEDITEDSEISMICEVALUATION PROCESS(ESEP)REPORTFOR WATTSBARNUCLEARPLANT

WattsBarNuclearPlantESEPReport

TableofContents Page LISTOFTABLES............................................................................................................................................4 LISTOFFIGURES..........................................................................................................................................5 1.0 PURPOSEANDOBJECTIVE...............................................................................................................6 2.0 BRIEF

SUMMARY

OFTHEFLEXSEISMICIMPLEMENTATIONSTRATEGIES......................................6 3.0 EQUIPMENTSELECTIONPROCESSANDESEL..................................................................................8 3.1 EquipmentSelectionProcessandESEL..............................................................................8 3.1.1 ESELDevelopment...............................................................................................9 3.1.2 PowerOperatedValves.......................................................................................9 3.1.3 PullBoxes...........................................................................................................10 3.1.4 TerminationCabinets.........................................................................................10 3.1.5 CriticalInstrumentationIndicators....................................................................10 3.1.6 Phase2and3PipingConnections.....................................................................10 3.2 JustificationforUseofEquipmentthatisnotthePrimaryMeansforFLEX Implementation................................................................................................................11 4.0 GROUNDMOTIONRESPONSESPECTRUM(GMRS)......................................................................11 4.1 PlotofGMRSSubmittedbytheLicensee.........................................................................11 4.2 ComparisontoSSE............................................................................................................13 5.0 REVIEWLEVELGROUNDMOTION(RLGM)...................................................................................14 5.1 DescriptionofRLGMSelected..........................................................................................14 5.2 MethodtoEstimateInStructureResponseSpectra(ISRS)..............................................15 6.0 SEISMICMARGINEVALUATIONAPPROACH.................................................................................16 6.1 SummaryofMethodologiesUsed....................................................................................16 6.2 HCLPFScreeningProcess..................................................................................................17 6.3 SeismicWalkdownApproach...........................................................................................18 6.3.1 WalkdownApproach..........................................................................................18 6.3.2 ApplicationofPreviousWalkdownInformation...............................................19 6.3.3 SignificantWalkdownFindings..........................................................................19 6.4 HCLPFCalculationProcess................................................................................................20 6.5 FunctionalEvaluationsofRelays......................................................................................21 6.6 TabulatedESELHCLPFValues(IncludingKeyFailureModes)..........................................21 7.0 INACCESSIBLEITEMS.....................................................................................................................21 7.1 IdentificationofESELitemsinaccessibleforwalkdowns.................................................21 7.2 PlannedWalkdown/EvaluationSchedule/CloseOut....................................................22 8.0 ESEPCONCLUSIONSANDRESULTS...............................................................................................22 8.1 SupportingInformation....................................................................................................22

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TableofContents(continued)

Page 8.2 IdentificationofPlannedModifications...........................................................................23 8.3 ModificationImplementationSchedule...........................................................................23 8.4 SummaryofRegulatoryCommitments............................................................................24

9.0 REFERENCES

..................................................................................................................................25

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Page4

List of Tables Page TABLE41:GMRSFORWATTSBARNUCLEARPLANT..............................................................................11 TABLE42:SSEFORWATTSBARNUCLEARPLANT..................................................................................13 TABLE51:RLGMFORWATTSBARNUCLEARPLANT..............................................................................14 TABLEA1:EXPEDITEDSEISMICEQUIPMENTLIST(ESEL)FORSEQUOYAHNUCLEARPLANT................A2 TABLEB1:ESEPHCLPFVALUESANDFAILUREMODESFORWATTSBARNUCLEARPLANT..................B2

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Page5

List of Figures Page FIGURE41:GMRSFORWATTSBARNUCLEARPLANT............................................................................12 FIGURE42:GMRSTOSSECOMPARISONFORWATTSBARNUCLEARPLANT........................................13 FIGURE51:RLGMFORWATTSBARNUCLEARPLANT............................................................................15 FIGURE52:NUREG/CR0098(0.5)VERSUSWATTSBARNUCLEARPLANTSSE......................................16

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Page6 1.0 PURPOSEANDOBJECTIVE FollowingtheaccidentattheFukushimaDaiIchiNuclearPowerPlant(NPP)resultingfromtheMarch 11,2011,GreatTohokuEarthquakeandsubsequenttsunami,theNuclearRegulatoryCommission (NRC)establishedaNearTermTaskForce(NTTF)toconductasystematicreviewofNRCprocessesand regulationsandtodetermineiftheagencyshouldmakeadditionalimprovementstoitsregulatory system.TheNTTFdevelopedasetofrecommendationsintendedtoclarifyandstrengthenthe regulatoryframeworkforprotectionagainstnaturalphenomena.Subsequently,theNRCissueda 50.54(f)letteronMarch12,2012[1],requestinginformationtoassurethattheserecommendations areaddressedbyallUnitedStatesofAmerica(U.S.)NPPs.The50.54(f)letterrequeststhatlicensees andholdersofconstructionpermitsunder10CFRPart50reevaluatetheseismichazardsattheirsites againstpresentdayUnitedStatesNRCrequirementsandguidance.Dependingonthecomparison betweenthereevaluatedseismichazardandthecurrentdesignbasis,furtherriskassessmentmaybe required.RiskassessmentapproachesacceptabletothestaffincludeaSeismicProbabilisticRisk Assessment(SPRA),oraSeismicMarginassessment(SMA).Basedupontheriskassessmentresults, theNRCstaffwilldeterminewhetheradditionalregulatoryactionsarenecessary.

ThisReportdescribestheExpeditedSeismicEvaluationProcess(ESEP)undertakenfortheWattsBar NPP,Unit1andUnit2(WBNP).TheintentoftheESEPistoperformaninterimactioninresponseto theNRCs50.54(f)letter[1]todemonstrateSeismicMarginthroughareviewofasubsetoftheplant equipmentthatcanbereliedupontoprotecttheReactorCorefollowingbeyonddesignbasisseismic events.

TheESEPisimplementedusingthemethodologiesintheNRCendorsedguidanceinElectricPower ResearchInstitute(EPRI)3002000704,SeismicEvaluationGuidance:AugmentedApproachforthe ResolutionofFukushimaNTTFRecommendation2.1:Seismic[2].

TheobjectiveofthisReportistoprovidesummaryinformationdescribingtheESEPevaluationsand results.ThelevelofdetailprovidedintheReportisintendedtoenableNRCtounderstandtheinputs used,theevaluationsperformed,andthedecisionsmadeasaresultoftheinterimevaluations.

2.0 BRIEF

SUMMARY

OFTHEFLEXSEISMICIMPLEMENTATIONSTRATEGIES TheWattsBarNuclearPlantFLEXresponsestrategiesforReactorCoreCoolingandHeatRemoval, ReactorInventoryControl/LongtermSubcriticality,andContainmentFunctionaresummarizedbelow.

ThissummaryisderivedfromtheWBNPOverallIntegratedPlan(OIP)inResponsetotheMarch12, 2012,CommissionOrderEA12049[3].

ForAtPowerConditions CoreCoolingandHeatRemoval ReactorcorecoolingandheatremovalisachievedviasteamreleasefromtheSteamGenerators(SGs) withSGmakeupfromtheTurbineDrivenAuxiliaryFeedwaterPump(TDAFWP)duringFLEXPhase1 withsuctionfromtheAuxiliaryFeedwaterStorageTank.LocalcontrolandoperationoftheSG AtmosphericReliefValves(ARVs)andtheTDAFWPsystemisavailableandproceduralizedsothat operationfromthemaincontrolroomisnotrequired.

ToprovideanunlimitedsupplyofwaterforcorecoolingduringPhase2,portableLPFLEXPumpswill bestagedattheIntakePumpStation(IPS)andtakesuctionfromtheintakechannelanddischargeto

WattsBarNuclearPlantESEPReport

Page7 fouremergencyrawcoolingwater(ERCW)FLEXconnectionsinsidetheIPS.Theywillbeusedto pressurizetheERCWheaderswhichcanthenbeusedfordirectsupplytotheTDAFWPsuction.

WhentheTDAFWPbecomesunavailableduetoreductioninavailablesteampressure,apermanently installedIPFLEXpumpwillbeusedtocontinuetosupplyfeedwatertotheSGs.Suctionwouldbefrom anERCWFLEXconnectiononABelevation(EL)737feet(ft).Thedischargeisroutedbyhosetothe TDAFWPdischargeFLEXconnectionsonEL729ftintheSouthMSVV.

ForPhase3,WBNPwillcontinuethePhase2copingstrategies.

ReactorInventorycontrol ForPhase1,ReactorCoolantSystem(RCS)makeupwillbeprovidedbythecoldlegaccumulators.RCS depressurizationandcooldownwillbeinitiatedassoonaspossibletoreducetheReactorCoolant Pump(RCP)sealleakagerate.

InPhase2,RCSmakeupwillbeprovidedbyrepoweringexistingSafetyInjection(SI)pumpsandusing thepumpstoinjectboratedwaterasneededintotheRCS.TheSIpumpswillberepoweredwitha3 MWeFLEXDieselGenerator.TheSIpumpscanbemanuallycontrolledwithhandswitchesonMain ControlRoomPanelM6.ThesourceofRCSmakeupwillbetheRefuelingWaterStorageTank(RWST).

ComponentCoolingSystem(CCS)pumpswillberepoweredusingthe3MWeFLEXdieselgeneratorsto providecoolingwatertotheSIpumpoilcooler.

LaterinPhase2,whentheRCSisdepressurizedsufficiently,apermanentlyinstalledHPFLEXpumpwill beusedtoinjectboratedwaterintotheRCSthroughSIpiping.Thesepumpswouldbealignedwitha suctionhosefromRWSTFLEXconnectionslocatedonABEL692ftandadischargehoseroutedtoaSIP dischargeFLEXheaderconnectiononABEL692ft.TheHPFLEXPumpsarefedfromandoperated fromthe480vC&AVentBoards1A22and2B22.

ForPhase3,WBNPwillcontinuethePhase2copingstrategies.

ContainmentFunction TherearenoPhase1FLEXactionstomaintaincontainmentintegrity.TheprimaryPhase2FLEX strategyforcontainmentintegrityentailsrepoweringonetrainofhydrogenigniters.ForPhase2,a ContainmentAirReturnFaninsideofcontainmentcanberepowered.

ForPhase3,WBNPwillcontinuethePhase2copingstrategies.

SupportSystems KeyreactorparameterstobemonitoredduringFLEXimplementationaremeasuredandindicatedby instrumentationthatispoweredbythe125VDCvitalbattery.DuringPhase1,thevitalbatteries providepowertoneededinstrumentationthroughthevitalbatteryboards,vitalinvertersandvital instrumentpowerboards.

DuringPhase2,powertovitalinstrumentationwillbemaintainedbysupplying480VACpowertothe vitalbatterychargersthroughnew,fused,FLEXdistributionpanels,whichwillbeconnecteddirectlyto thebatterychargers.480VACpowerwillbesuppliedtothedistributionpanelsbyprestaged,480VAC FLEXdieselgeneratorslocatedontheroofoftheAuxiliaryBuilding.

DuringtheearlyportionsofPhase2,the6.9kVswitchgearand6.9kVShutdownBoardswillbe energizedwithaprestaged3MWeFLEXdieselgeneratorlocatedintheFLEXbuilding.Thiswillallow reenergizingtheSIpumpsforinventorycontrol.

WattsBarNuclearPlantESEPReport

Page8 ForPhase3,WBNPwillcontinuethePhase2copingstrategies.

ForShutdownConditions ReactorcorecoolingandheatremovalwithSGsnotavailableisprovidedduringPhase1byheatingup andboilingoftheRCScoolantinventory.

RCSinventoryduringPhase1maybemaintainedbygravityfeedfromtheRWSTateachunit.The abilityoftheRWSTateachunittoprovideagravityfeedtotheRCSislimitedbytheRWSTfluidheight, linelossesthroughthegravityfeedpath,andpressurewithintheRCS.

IfitisdeterminedthatgravityfeedisnoteffectivetocooltheRCSandpreventfueldamage,WattsBar hastakenactionstoproceduralizeadministrativecontrolstoprestageFLEXequipmentpriorto enteringaconditionwheretheSGscannotprovideadequatecorecooling.

WithSGsunavailablethetransitiontoPhase2strategieswillberequiredasinventoryislostfromthe RCS.PriortolossofgravityfeedfromtheRWST,thepermanentlyinstalled480vmotordrivenMode5

&6IPFLEXpumpmustbealignedtotakesuctionfromtheRWSTanddeliverthecoolanttotheRCSvia theSafetyInjectionSystemFLEXconnections.Powersupplyandcontrolarefromthe480vC&AVent Boards.Sufficientflushingflowwillbeneededtopreventboronprecipitation.

ReactorcorecoolingwithSGsnotavailableisadequatelymaintainedviathePhase2strategy.

ForPhase3,WBNPwillcontinuethePhase2copingstrategies.

WBNPwillfollowtheguidancecontainedwithintheNuclearEnergyInstitute(NEI)positionpaper datedSeptember18,2013,entitledPositionPaper:Shutdown/RefuelingModes(ADAMSNo.

ML13273A514)[23].

3.0 EQUIPMENTSELECTIONPROCESSANDESEL TheselectionofequipmentfortheExpeditedSeismicEquipmentList(ESEL)followedtheguidelinesof EPRI3002000704[2].TheESELforUnit1andUnit2inpresentedinAttachmentsA.Information presentedinAttachmentAisdrawnfrom[25].

3.1 EquipmentSelectionProcessandESEL TheselectionofequipmenttobeincludedontheESELwasbasedoninstalledplantequipment creditedintheFLEXstrategiesduringPhase1,2,and3mitigationofaBeyondDesignBasisExternal Event(BDBEE),asoutlinedintheWBNPOIPinResponsetotheMarch12,2012,CommissionOrderEA 12049[3].TheOIPprovidestheWBNPFLEXmitigationstrategyandservesasthebasisforequipment selectedfortheESEP.

ThescopeofinstalledplantequipmentincludesequipmentrelieduponfortheFLEXstrategiesto sustainthecriticalfunctionsofcorecoolingandcontainmentintegrityconsistentwiththeWattsBar OIP[3].FLEXmitigationrecoveryactionsareexcludedfromtheESEPscopeperEPRI3002000704[2].

TheoveralllistofplannedFLEXmodificationsandthescopeforconsiderationhereinislimitedtothose requiredtosupportcorecooling,reactorcoolantinventoryandsubcriticality,andcontainment integrityfunctions.PortableandprestagedFLEXequipment(notpermanentlyinstalled)areexcluded fromtheESELperEPRI3002000704.

TheESELcomponentselectionfollowstheEPRIguidanceoutlinedinSection3.2ofEPRI3002000704.

WattsBarNuclearPlantESEPReport

Page9

1. Thescopeofcomponentsislimitedtothatrequiredtoaccomplishthecorecoolingand containmentsafetyfunctionsidentifiedinTable32ofEPRI3002000704[2].The instrumentationmonitoringrequirementsforcorecooling/containmentsafetyfunctions arelimitedtothoseoutlinedintheEPRI3002000704guidance,andareasubsetofthose outlinedintheWattsBarOIP[3].

2. ThescopeofcomponentsislimitedtoinstalledplantequipmentandFLEXconnections necessarytoimplementtheWattsBar,asdescribedinSection2.

3. ThescopeofcomponentsassumesthecreditedFLEXconnectionmodificationsare implemented,andarelimitedtothoserequiredtosupportasingleFLEXsuccesspath(i.e.,

eitherPrimaryorBackup/Alternate).

4. ThePrimaryFLEXsuccesspathistobespecified.SelectionoftheBackup/Alternate FLEXsuccesspathmustbejustified.

5. Phase3copingstrategiesareincludedintheESEPscope,whereasrecoverystrategiesare excluded.

6. Structures,systems,andcomponentsexcludedpertheEPRI3002000704guidanceare:

Structures(e.g.containment,reactorbuilding,controlbuilding,auxiliarybuilding,etc.).

Piping,cabling,conduit,HVAC,andtheirsupports.

Manualvalvesandrupturedisks.

PoweroperatedvalvesnotrequiredtochangestateaspartoftheFLEXmitigation strategies.

Nuclearsteamsupplysystemcomponents(e.g.RPVandinternals,reactorcoolant pumpsandseals,etc.).

7. Forcasesinwhichneithertrainwasspecifiedasaprimaryorbackupstrategy,thenonly onetraincomponent(generallyAtrain)isincludedintheESEL.

3.1.1 ESELDevelopment TheESELwasdevelopedbyreviewingtheWBNPOIP[3]todeterminethemajorequipmentinvolvedin theFLEXstrategies.Furtherreviewsofplantdrawings(e.g.,ProcessandInstrumentationDiagrams (P&IDs)andElectricalOneLineDiagrams)wereperformedtoidentifytheboundariesoftheflowpaths tobeusedintheFLEXstrategiesandtoidentifyspecificcomponentsintheflowpathsneededto supportimplementationoftheFLEXstrategies.

Boundarieswereestablishedatanelectricalormechanicalisolationdevice(e.g.,isolationamplifier, valve,etc.)inbranchcircuits/branchlinesoffthedefinedstrategyelectricalorfluidflowpath.P&IDs weretheprimaryreferencedocumentsusedtoidentifymechanicalcomponentsandinstrumentation.

TheflowpathsusedforFLEXstrategieswereselectedandspecificcomponentswereidentifiedusing detailedequipmentandinstrumentdrawings,pipingisometrics,electricalschematicsandoneline drawings,systemdescriptions,designbasisdocuments,etc.,asnecessary.

3.1.2 PowerOperatedValves Page33ofEPRI3002000704[2]notesthatpoweroperatedvalvesnotrequiredtochangestateas partoftheFLEXmitigationstrategiesareexcludedfromtheESEL.Page32alsonotesthatfunctional

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Page10 failuremodesofelectricalandmechanicalportionsoftheinstalledPhase1equipmentshouldbe considered(e.g.AuxiliaryFeedwater(AFW)trips).Toaddressthisconcern,thefollowingguidanceis appliedintheWattsBarESELforfunctionalfailuremodesassociatedwithpoweroperatedvalves:

PoweroperatedvalvesthatremainenergizedduringtheELAPevents(suchasDCpowered valves),wereincludedontheESEL.

PoweroperatedvalvesnotrequiredtochangestateaspartoftheFLEXmitigationstrategies werenotincludedontheESEL.TheseismiceventalsocausestheELAPevent;therefore,the valvesareincapableofspuriousoperationastheywouldbedeenergized.

PoweroperatedvalvesnotrequiredtochangestateaspartoftheFLEXmitigationstrategies duringPhase1,andarereenergizedandoperatedduringsubsequentPhase2and3 strategies,werenotevaluatedforspuriousvalveoperationastheseismiceventthatcaused theELAPhaspassedbeforethevalvesarerepowered.

3.1.3 PullBoxes PullboxesweredeemedunnecessarytoaddtotheESELsasthesecomponentsprovidecompletely passivelocationsforpullingorinstallingcables.Nobreaksorconnectionsinthecablingareincludedin pullboxes.Pullboxeswereconsideredpartofconduitandcabling,whichareexcludedinaccordance withEPRI3002000704[2].

3.1.4 TerminationCabinets Terminationcabinets,includingcabinetsnecessaryforFLEXPhase2and3connections,provide consolidatedlocationsforpermanentlyconnectingmultiplecables.Theterminationcabinetsandthe internalconnectionsprovideacompletelypassivefunction;however,thecabinetsareincludedinthe ESELtoensureindustryknowledgeonpanel/anchoragefailurevulnerabilitiesisaddressed.

3.1.5 CriticalInstrumentationIndicators Criticalindicatorsandrecordersaretypicallyphysicallylocatedonpanels/cabinetsandareincludedas separatecomponents;however,seismicevaluationoftheinstrumentindicationmaybeincludedinthe panel/cabinetseismicevaluation(ruleofthebox).

3.1.6 Phase2and3PipingConnections Item2inSection3.1abovenotesthatthescopeofequipmentintheESELincludes.FLEX connectionsnecessarytoimplementtheWBNPOIP[3]asdescribedinsection2.Item3inSection3.1 alsonotesthatThescopeofcomponentsassumesthecreditedFLEXconnectionmodificationsare implemented,andarelimitedtothoserequiredtosupportasingleFLEXsuccesspath(i.e.,either PrimaryorBackup/Alternate).Item6inSection3.1abovegoesontoexplainthatPiping, cabling,HVAC,andtheirsupportsareexcludedfromtheESELscopeinaccordancewithEPRI 3002000704[2].

Therefore,pipingandpipesupportsassociatedwithFLEXPhase2andPhase3connectionsare excludedfromthescopeoftheESEPevaluation.However,anyactivevalvesinFLEXPhase2andPhase 3connectionflowpathareincludedintheESEL.

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Page11 3.2 JustificationforUseofEquipmentthatisnotthePrimaryMeansforFLEXImplementation TheWBNPESELisbasedontheprimarymeansofimplementingtheFLEXstrategy.Therefore,no additionaljustificationisrequired.

4.0 GROUNDMOTIONRESPONSESPECTRUM(GMRS) 4.1 PlotofGMRSSubmittedbytheLicensee TheSafeShutdownEarthquake(SSE)controlpointisdefinedatthereactorbuilding(RB)foundation levelatelevation684ftandisthedeepeststructurefoundationcontrolpoint.Table41showsthe GMRSaccelerationsforarangeoffrequencies.TheGMRSatthecontrolpointelevationisshownin Figure41[4].

Table41GMRSforWattsBarNuclearPlant Frequency(Hz)

GMRS(g) 100 3.68E01 90 3.71E01 80 3.77E01 70 3.89E01 60 4.21E01 50 4.95E01 40 5.93E01 35 6.40E01 30 6.80E01 25 7.23E01 20 7.59E01 15 7.66E01 12.5 7.58E01 10 7.26E01 9

6.90E01 8

6.55E01 7

6.12E01 6

5.60E01

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Page12 Table41GMRSforWattsBarNuclearPlant(Continued)

Frequency(Hz)

GMRS(g) 5 4.93E01 4

3.95E01 3.5 3.46E01 3

2.99E01 2.5 2.50E01 2

2.28E01 1.5 1.95E01 1.25 1.65E01 1

1.26E01 0.9 1.13E01 0.8 1.03E01 0.7 9.51E02 0.6 8.71E02 0.5 7.67E02 0.4 6.13E02 0.35 5.37E02 0.3 4.60E02 0.25 3.83E02 0.2 3.07E02 0.15 2.30E02 0.125 1.92E02 0.1 1.53E02 Figure41:GMRSforWattsBarNuclearPlant 0.00E+00 1.00E01 2.00E01 3.00E01 4.00E01 5.00E01 6.00E01 7.00E01 8.00E01 0.1 1

10 100 Acceleration(g)

Frequency(Hz)

GMRSatControlpointforWattsBarNuclearPlant,5%

Damping

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Page13 4.2 ComparisontoSSE TheSSEwasdevelopedinaccordancewith10CFRPart100AppendixAthroughanevaluationofthe maximumearthquakepotentialfortheregionsurroundingthesite.TheSSEhorizontalspectrumat theWBNPsitederivesfromthemaximumhistoricearthquakereportedinthesiteprovince(the1897 GilesCountyevent)placedadjacenttotheSite.TheSSEresponsespectrumischaracterizedbyapeak groundacceleration(PGA)of0.18accelerationofgravity(g)andashapethatconformstoamodified Newmarkspectrum[6],whichissimilartotheRegulatoryGuide(RG)1.60spectralshape.Figure42 comparestheGMRStotheSSEandillustratesthattheGMRSexceedstheSSEinthefrequencyrange above4.5Hertz(Hz).ThemaximumratioofGMRStoSSEbetween1Hzand10Hzoccursata frequencyof10Hzandthatratioisapproximately2.0.

Table42:SSEforWattsBarNuclearPlant 0.5 0.11 1

0.22 2

0.46 2.5 0.46 5

0.46 6.67 0.46 10 0.36 25 0.22 33 0.18 100 0.18

Figure42:GMRStoSSEComparisonforWattsBarNuclearPlant 0.00E+00 1.00E01 2.00E01 3.00E01 4.00E01 5.00E01 6.00E01 7.00E01 8.00E01 9.00E01 0.1 1

10 100 Acceleration(g)

Frequency(Hz)

GMRStoSEEComparisonforWattsBarNuclearPlant,5%

Damping WattsBarGMRS WBNSSE(0.18g)

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Page14

5.0 REVIEWLEVELGROUNDMOTION(RLGM) 5.1 DescriptionofRLGMSelected Section4ofEPRI3002000704[2]presentstwoapproachesfordevelopingtheRLGMtobeusedinthe ESEP:

1. TheRLGMmaybederivedbylinearlyscalingtheSSEbythemaximumratiooftheGMRS/SSE betweenthe1and10Hzrange(nottoexceed2xSSE).InstructureRLGMseismicmotions wouldbederivedusingexistingSSEbasedinstructureresponsespectra(ISRS)withthesame scalefactor.

2. Alternately,licenseeswhohavedevelopedappropriatestructural/soilstructureinteraction (SSI)modelscapableofcalculatingISRSbasedonsiteGMRS/uniformhazardresponsespectrum (UHRS)inputmayopttousetheseISRSinlieuofscaledSSEISRS.

BasedonareviewoftabulateddatainTable41andtheSSEvaluesinTable42,intherangebetween 1and10HzthemaximumratioofGMRStotheSSEiscalculatedtobe:

SFmax=SAGMRS(10HZ)/SASSE10Hz)=0.726g/0.36g=2.02 Sincethecomputedscalefactorisgreaterthan2.0,theRLGMwouldbesetalevelof2xSSE.Thisis showninTable51andFigure51.

Table51RLGMforWattsBarNuclearPlant 0.5 0.22 1

0.44 2

0.92 2.5 0.92 5

0.92 6.67 0.92 10 0.72 25 0.44 33 0.36 100 0.36

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Page15 Figure51:RLGMforWattsBarNuclearPlant 5.2 MethodtoEstimateInStructureResponseSpectra(ISRS)

EPRISMAMethodologyrecommendsthatmediancenteredresponseshouldbeusedinHCLPF calculations.TheISRSusedintheupdatedIPEEE[12]arebasedontheNUREG0098medianshapefor rockwithaPGAof0.5g.AsshownonFigure52thisshapeissimilartotheSSEspectrum.Thisfigure alsoillustratesthattheupdatedIPEEE[12]RLEspectrumwithaPGAof0.5genvelopstheRLGMover theentirerangeoffrequencies.Therefore,themediancenteredISRSdevelopedintheupdatedIPEEE

[12]representtheseismicdemandonwhichtheHCLPFvaluesreportedherearebased.

0.00E+00 1.00E01 2.00E01 3.00E01 4.00E01 5.00E01 6.00E01 7.00E01 8.00E01 9.00E01 1.00E+00 0.1 1

10 100 Acceleration(g)

Frequency(Hz)

RLGMforWattsBarNuclearPlant WattsBarGMRS RLGM=2xSSE

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Page16

Figure52:NUREG/CR0098(0.5g)versusWattsBarNuclearPlantSSE 6.0 SEISMICMARGINEVALUATIONAPPROACH ItisnecessarytodemonstratethatESELitemshavesufficientseismiccapacitytomeetorexceedthe demandcharacterizedbytheRLGM.TheseismiccapacityischaracterizedasthePGAforwhichthere isaHCLPF.ThePGAisassociatedwithaspecificspectralshape,inthiscasethe5%dampedRLGM spectralshape.TheHCLPFcapacitymustbeequaltoorgreaterthantheRLGMPGA.Thecriteriafor seismiccapacitydeterminationaregiveninSection5ofEPRI3002000704[2].

TherearetwobasicapproachesfordevelopingHCLPFcapacities:

1.

Deterministicapproachusingtheconservativedeterministicfailuremargin(CDFM) methodologyofEPRINP6041SL,AMethodologyforAssessmentofNuclearPower PlantSeismicMargin(Revision1)[8].

2.

ProbabilisticapproachusingthefragilityanalysismethodologyofEPRITR103959, MethodologyforDevelopingSeismicFragilities[10].

6.1 SummaryofMethodologiesUsed WBNPperformedaSMAforUnit1in1998[11]andcompletedanIPEEEFinalReportforUnit2in2014

[21].TheSMAconsistedofscreeningwalkdowns,functionalevaluation,andHCLPFanchorage calculations.ThescreeningwalkdownsusedthescreeningtablesfromChapter2ofEPRINP6041[8].

ThewalkdownswereconductedbyengineerstrainedinEPRINP6041(theengineersattendedtheEPRI SMAAddOncourseinadditiontotheSeismicQualificationUtilityGroup(SQUG)WalkdownScreening andSeismicEvaluationTrainingCourse),andweredocumentedonScreeningEvaluationWorkSheets fromEPRINP6041.AnchoragecapacitycalculationsusedtheCDFMcriteriafromEPRINP6041.

SeismicdemandwastheIPEEEReviewLevelEarthquake(RLE)forSMA(medianNUREG/CR0098[6]

groundresponsespectrumforrockanchoredto0.3gPGA).

0.00E+00 2.00E01 4.00E01 6.00E01 8.00E01 1.00E+00 1.20E+00 0.1 1

10 100 Acceleration(g)

Frequency(Hz)

RLENUREG/CR0098 (0.5g)

RLGM=2xSSE WBNSSE(0.18g)

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Page17 AftersubmittaloftheIPEEEReportstotheNRCandconsideringinsightsintotheseismicruggednessof WBNequipmentobtainedfromtheIPEEEreports,WBNperformedupdatedHCLPFcapacity evaluations.TheupdatedHCLPFcapacityevaluationsfocusedonremovingexcessconservatismand determiningHCLPFcapacityinamoreaccuratemanner.TheupdatedHCLPFevaluationsdocumenta minimumHCLPFof0.5gforcomponentsontheIPEEESSEL[12].

ConsideringinsightsfromtheupdatedHCLPFevaluations,aminimumHCLPFof0.5gwasselectedas theRLEfortheSMAintheESEP.Figure52showsthemedianNUREG/CR0098(0.5g)ground responsespectrumselectedastheRLEfortheSMAintheESEP,comparedtotherequiredESEPRLGM responsespectrum.ThefigureshowsthattheselectedESEPRLEenvelopstherequiredESEPRLGMat allfrequencies.

6.2 HCLPFScreeningProcess ThescreeningcapacityinEPRINP6041[8]Table24basedongroundpeakspectralaccelerationsof 1.2gexceedstheRLGMpeakspectralacceleration.Theanchoragecapacitycalculationswerebasedon floorresponsespectrageneratedfortheRLE.Therefore,equipmentforwhichthescreeningcaveats weremetandforwhichtheanchoragecapacityexceedstheRLEseismicdemandassociatedwiththe PGAof0.5gcanbescreenedoutfromESEPseismiccapacitydeterminationbecausetheHCLPFcapacity exceedstheRLGM.

ThecombinedUnit1andUnit2ESELincludes452items.Ofthese,87arevalves,bothpoweroperated andrelief.InaccordancewithTable24ofEPRINP6041[8],activevalvesmaybeassignedafunctional capacityof1.2gpeakspectralacceleration,andanchorageisnotafailuremodeifevaluation recommendedformotoroperatedvalvesinpipinglinesof2inchesdiameterorlessisperformed.

Therefore,valvesontheESELmaybescreenedoutfromESEPseismiccapacitydetermination,subject tothecaveatregardinglargeextendedoperatorsonsmalldiameterpiping.Poweroperatedvalves wereaddressedintheWBNPUnit1and2IPEEESMA.IntheSMA,thevalveswerefoundtomeetEPRI NP6041FiguresF25andF26(thusmeetingthe1.2gpeakspectralaccelerationscreeningcriteria)or toexceedtheRLEfloorresponsespectraonthebasisofvendorseismicqualificationreports.

TheIPEEESMAreviewscovered449valvesinUnit1,and27valvesdescribedasUnit0.Thisreview focusedonmotoroperatedvalvesonsmalldiameterpipingandvalvesathighelevationsintheplant.

ReliefvalveswerenotincludedintheIPEEEreviewexceptforthepoweroperatedreliefvalves,which metthecriteria.SpringoperatedreliefvalvesareconsideredtomeettheEPRINP60411.2gpeak spectralaccelerationscreeningcriteriawithoutexplicitreview.Onthebasisoftheabove,theESEL valvesmaybescreenedoutfromESEPseismiccapacitydetermination.

ThenonvalvecomponentsintheESELaregenerallyscreenedbasedontheSMAresults.IftheSMA showedthatthecomponentmettheEPRINP6041screeningcaveatsandtheCDFMcapacityexceeded theRLEdemand,thecomponentcanbescreenedoutfromtheESEPcapacitydetermination.

Individualinstrumentationitemsaregenericallyassociatedwithinstrumentracksandinstrument panels.ThesewillbeassignedHCLPFvaluesbasedonsimilarassembliesevaluatedintheIPEEE.

TheESELincludesaninstrumentloopforparametersmonitoredduringtheFLEXimplementation.A typicalloopconsistsofaprobeorsensor,anindicatorand/ortransmitteronalocalrack,acabinetin theAuxiliaryInstrumentRoom,anindicatorintheMainControlRoom,andanindicatorintheAux ControlRoom.PanelsintheMainControlRoom,AuxControlRoom,andtheAuxInstrumentRoom

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Page18 havebeenscreenedbytheupdatedIPEEEevaluation[12]asdiscussedabove,andallprobesorsensors willbeboxed/mountedwiththeirrespectivecomponent.

6.3 SeismicWalkdownApproach 6.3.1 WalkdownApproach WalkdownswereperformedinaccordancewiththecriteriaprovidedinSection5ofEPRI3002000704

[2],whichreferstoEPRINP6041[8]fortheSMAprocess.Pages226through230ofEPRINP6041

[8]describetheseismicwalkdowncriteria,includingthefollowingkeycriteria.

TheSRT[SeismicReviewTeam]shouldwalkby100%ofallcomponentswhicharereasonably accessibleandinnonradioactiveorlowradioactiveenvironments.Seismiccapabilityassessmentof componentswhichareinaccessible,inhighradioactiveenvironments,orpossiblywithincontaminated containment,willhavetorelymoreonalternatemeanssuchasphotographicinspection,morereliance onseismicreanalysis,andpossibly,smallerinspectionteamsandmorehurriedinspections.A100%

walkbydoesnotmeancompleteinspectionofeachcomponent,nordoesitmeanrequiringan electricianorothertechniciantodeenergizeandopencabinetsorpanelsfordetailedinspectionofall components.ThiswalkdownisnotintendedtobeaQAorQCrevieworareviewoftheadequacyofthe componentattheSSElevel.

IftheSRThasareasonablebasisforassumingthatthegroupofcomponentsaresimilarandare similarlyanchored,thenitisonlynecessarytoinspectonecomponentoutofthisgroup.The similaritybasisshouldbedevelopedbeforethewalkdownduringtheseismiccapabilitypreparatory work(Step3)byreferencetodrawings,calculations,orspecifications.Theonecomponentoreachtype whichisselectedshouldbethoroughlyinspectedwhichprobablydoesmeandeenergizingandopening cabinetsorpanelsforthisverylimitedsample.Generally,asparerepresentativecomponentcanbe foundsoastoenabletheinspectiontobeperformedwhiletheplantisinoperation.Atleastforthe onecomponentofeachtypewhichisselected,anchorageshouldbethoroughlyinspected.

Thewalkdownprocedureshouldbeperformedinanadhocmanner.Foreachclassofcomponentsthe SRTshouldlookcloselyatthefirstitemsandcomparethefieldconfigurationswiththeconstruction drawingsand/orspecifications.Ifaonetoonecorrespondenceisfound,thensubsequentitemsdonot havetobeinspectedinasgreatadetail.Ultimatelythewalkdownbecomesawalkbyofthe componentclassastheSRTbecomesconfidentthattheconstructionpatternistypical.Thisprocedure forinspectionshouldberepeatedforeachcomponentclass;although,duringtheactualwalkdownthe SRTmaybeinspectingseveralclassesofcomponentsinparallel.Ifseriousexceptionstothedrawings orquestionableconstructionpracticesarefoundthenthesystemorcomponentclassmustbeinspected incloserdetailuntilthesystematicdeficiencyisdefined.

The100%walkbyistolookforoutliers,lackofsimilarity,anchoragewhichisdifferentfromthat shownondrawingsorprescribedincriteriaforthatcomponent,potentialSI[SeismicInteraction]

problems,situationsthatareatoddswiththeteammemberspastexperience,andanyotherareasof seriousseismicconcern.Ifanysuchconcernssurface,thenthelimitedsamplesizeofonecomponentof eachtypeforthoroughinspectionwillhavetobeincreased.Theincreaseinsamplesizewhichshould beinspectedwilldependuponthenumberofoutliersanddifferentanchorages,etc.,whichare observed.ItisuptotheSRTtoultimatelyselectthesamplesizesincetheyaretheoneswhoare responsiblefortheseismicadequacyofallelementswhichtheyscreenfromthemarginreview.

AppendixDgivesguidanceforsamplingselection.

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Page19 AttachmentAwasconsolidatedfromthe452componentsintoawalkdownlistcontaining210 components.Consolidatedfromthislistarecomponentsinthepreviouslycreditedwalkdownsand componentsthataremountedonorboxedintoothercomponents.Thedetailsofthesewalkdown aresummarizedinESEPWalkdownPackage[19].

6.3.2 ApplicationofPreviousWalkdownInformation PreviousseismicwalkdownswereusedtosupporttheESEPseismicevaluations.Someofthe componentsontheESELwereincludedintheNTTF2.3seismicwalkdowns[18].Thosewalkdowns wererecentenoughthattheydidnotneedtoberepeatedfortheESEP.

SeveralESELitemswerepreviouslywalkeddownduringtheWBNPUnit1and2SeismicIPEEEprogram.

Additionally,previouswalkdownsperformedaspartoftheUnit1andUnit2IntegratedInteraction Program(IIP)andEquipmentSeismicQualification(ESQ)ProgramsasreferencedintheWBNUnit1 andUnit2IPEEEreportsarealsocredited.Thosewalkdownresultswerereviewedandthefollowing stepsweretakentoconfirmthatthepreviouswalkdownconclusionsremainedvalid.

Awalkbywasperformedtoconfirmthattheequipmentmaterialconditionandconfigurationis consistentwiththewalkdownconclusionsandthatnonewsignificantinteractionsrelatedto blockwallsorpipingattachedtotanksexist.

IftheESELitemwasscreenedoutbasedonthepreviouswalkdown,thatscreeningevaluation wasreviewedandreconfirmedfortheESEP.

TheconstructionworkonWBN2iscurrentlyongoing.However,theconstructionandequipment installationissufficientlycompletesothataseismicmarginswalkdownofitemsofequipmentthatare uniquetotheWBN2ESELcouldbeperformed.Thiswalkdownwasrecentlycompletedaspartofthe ESEPinaccordancewiththerequirementsoftheEPRISMAmethodology.

6.3.3 SignificantWalkdownFindings ConsistentwiththeguidancefromNP6041[8],nosignificantoutliersoranchorageconcernswere identifiedduringtheWBNPseismicwalkdowns.Thefollowingfindingswerenotedduringthe walkdowns,butarenotconsideredsignificant.

SeveralblockwallswereidentifiedintheproximityofESELequipment.Theseblockwallswere alsoidentifiedduringtheIPEEEwalkdownandassessedfortheirstructuraladequacyto withstandtheseismicloadsresultingfromtheRLE.PerIPEEE,allblockwallsatWattsBar exceedtheHCLPFlimitoftheESEPandareadequate[21].

WBN2DPL2681-Panelisadjacenttoblockwall(correspondingUnit1panelisnotnear wall).Asstatedabove,thisblockwallisadequate.

WBN0XSW2361/AS,WBN0XSW2362/AS,andWBN0XSW2363/AS-Panelsare mountedonpartitionwalls.Thepartitionwallsareloadratedandconsideredpartofbuilding structure,thusthewallsarenotconsideredpartofthescopefortheESEL.

WBN0PNL360FP/A,andFP/B-Bothpanelsareincontactwith,butnottiedto,acabletray supportabove.Theseinteractionsarejudgedtobecredible,butnotsignificantbytheSRT.

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Page20 WBN2MCC213A1-MotorControlCenter(MCC)hasinteractionissuewithanoverhead cabletraysupport.ThisMCCwasreviewedundertheIPEEEevaluationfortheplantandall potentialinteractionswereresolvedforRLGM[21].

WBN1PNL276L1000-Twoanchorboltsprojectfromtheflooraboutaninchhigherthanthe typicalinstallation.Embedmentadequacyfortheseboltsisaddressedandithasbeenverified thattheminimumembedmentfortheanchorshasbeenmet.

ThefindingsandotherinformationdevelopedfromtheESEPwalkdownaresummarizedinESEP WalkdownPackage[19].Basedonwalkdownresults,HCLPFcapacityevaluationswererecommended forthefollowingtwelve(12)components.

MotorControlCentersandSwitchgear Transformers ControlandInstrumentationPanels InstrumentRacks DistributionPanels EngineGenerators HorizontalPumps AirOperatedValves MotorOperatedValves VerticalTanksandHeatExchangers HorizontalTanksandHeatExchangers Relays 6.4 HCLPFCalculationProcess ESELitemsnotincludedinthepreviousupdatedIPEEEevaluationsatWBNPwereevaluatedusingthe criteriainEPRINP6041[8].Thoseevaluationsincludedthefollowingsteps:

Performingseismiccapabilitywalkdownsforequipmentnotincludedinpreviousseismic walkdowns(SQUG,IPEEE,orNTTF2.3)toevaluatetheequipmentinstalledplantconditions PerformingscreeningevaluationsusingthescreeningtablesinEPRINP6041asdescribedin Section6.2 PerformingHCLPFcalculationsconsideringvariousfailuremodesthatincludebothstructural failuremodes(e.g.,anchorage,loadpath,etc.)andfunctionalfailuremodes AllHCLPFcalculationswereperformedusingtheCDFMmethodologyandaredocumentedinthe SummaryofHCLPFCalculationsforWBNPESEP[20].TheHCLPFcapacitiesforfunctionalityarebased onthecomparisonofthedemand(ISRS)withEPRI6041[8]screeninglevelHCLPFs,GERS,ortest responsespectra.ESELitemsnotincludedinthepreviousupdatedIPEEEevaluationshaveHCLPF 0.5g.

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Page21 6.5 FunctionalEvaluationsofRelays ESEPconsiderscabinetsandequipmentcontrolscontainingrelays,contactors,switches,circuit breakersandotherelectricalandinstrumentationcomponentsthatcouldbeaffectedbyhigh frequencyearthquakemotionsandthatimpactoperationofequipmentintheESEL.

AfocusedscopeSMAwasperformedtosupporttheIPEEEforWBNPassummarizedintheFebruary 1998WBNPUnit1IPEEEsubmittal[11]andtheNovember2014WBNPUnit2IPEEEFinalReport[21].

Therelayevaluationforafocusedscopeplantislimitedtoareviewoflowseismicruggednessrelays (badactorrelays).Therelayevaluationdocumentedthattherearenolowseismicruggednessrelays usedinapplicationswhichqualifythemasessentialrelays.

In2013,aspartoftheadditionalevaluationstodocumentaHCLPFof0.5g,arelayseismicfunctionality evaluationwasperformedforUnit1and2.Thepurposeoftherelayfunctionalityevaluationwasto verifythatsafeshutdownsystemsmodeledintheWBNIPEEEwouldnotbepreventedfrom performingtheirsafeshutdownfunctionsbecauseofrelay(contact)chatterduringtheperiodof strongmotion.Therelayevaluationfoundthatrelay(contact)chatterduringtheperiodofstrong motionwouldnotpreventsafeshutdownsystemsintheWBNIPEEEfromperformingtheirsafe shutdownfunctions[22].

FortheWBNPESEPAnalysis,anevaluationwasperformedtoidentifycomponentsthatare(1)needed forFLEXimplementation,(2)notontheIPEEESSEL,and(3)thathavethepotentialforrelaychatter issues.Theevaluationidentifiedtwosetsofcomponents.ThefirstsetisSystem46relaysassociated withtheauxiliaryfeedwatersystem.AHCLPFwascalculatedfortherelaysandinallcases,theHCLFP 0.5g[20].ThesecondsetistheFCV117andFCV118steamisolationvalvesthatcanisolatethe steamsupplytotheTDAFWpump.Intheeventofasteamlinebreak,bothofthesevalvescanreceive aclosesignalifhightemperatureisdetectedintheTDAFWpumproom.However,becausethese valvesaremotoroperatedvalves(MOV),withaLossofOffsitePower(LOOP)thevalveswillnotisolate evenwithaspuriousclosesignal.Therefore,thesevalvesdonotpresentaproblemforsuccessful FLEXimplementation.

6.6 TabulatedESELHCLPFValues(IncludingKeyFailureModes)

TabulatedESELHCLPFvaluesareprovidedinAttachmentBforUnit1andUnit2items,aswellasfor itemscommontobothunits.Thefollowingnotesapplytotheinformationinthetables.

ForitemsscreenedoutusingNP6041[8]screeningtables,thescreeninglevelisprovidedas

>RLGM(0.5g)andthefailuremodeislistedasScreened,(unlessthecontrollingHCLPFvalue isgovernedbyanchorage).

ForitemswhereanchoragecontrolstheHCLPFvalue,theHCLPFvalueislistedinthetableand thefailuremodeisnotedasanchorage.

7.0 INACCESSIBLEITEMS 7.1 IdentificationofESELitemsinaccessibleforwalkdowns AsconcludedbyESEPWalkdownPackage[19],noitemsontheESELwerejudgedtorequireany furtherwalkdownstosatisfytheESEPevaluation

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Page22 7.2 PlannedWalkdown/EvaluationSchedule/CloseOut Unit1Containmentwasnotaccessibleduringthewalkbyverifications.TheESELcomponentsinside theUnit1ContainmentarethesameasthoseinsidetheUnit2Containment.Detailedcloseup inspectionofallESELcomponentswasperformedforthecomponentsinsideUnit2Containment.All oftheseUnit2ESELcomponentsinsideUnit2Containmentwerefoundtobewellconstructed, seismicallyrugged,andhadadequatecommodityclearance.TheTVAWattsBarradiationprotection andoperationsgroupsmaintaincurrentphotographsofallareasinsideUnit1Containment.These photographsweremadeavailabletothewalkdownteam.TheESEPwalkdownteamreviewedthe photographsandconcludedthattheESELcomponentsinsideUnit1Containmentarethesameas thoseinsideUnit2Containment.Itwasalsoconcludedthatthecomponentswerewellconstructed, seismicallyrugged,andhadadequatecommodityclearance[24].Basedontheseobservations,as concludedbytheESEPWalkdownPackage[19],itisjudgedthatnoitemsontheESELrequireany furtherwalkdownstosatisfytheESEPevaluation.

8.0 ESEPCONCLUSIONSANDRESULTS 8.1 SupportingInformation WBNPhasperformedtheESEPasaninterimactioninresponsetotheNRCs50.54(f)letter[1].Itwas performedusingthemethodologiesintheNRCendorsedguidanceinEPRI3002000704[2].

TheESEPprovidesanimportantdemonstrationofSeismicMarginandexpeditesplantsafety enhancementsthroughevaluationsandpotentialneartermmodificationsofplantequipmentthatcan bereliedupontoprotecttheReactorCorefollowingbeyonddesignbasisseismicevents.

TheESEPispartoftheoverallWBNPresponsetotheNRCs50.54(f)letter[1].OnMarch12,2014,NEI submittedtotheNRCresultsofastudy[13]ofseismiccoredamageriskestimatesbasedonupdated seismichazardinformationasitappliestooperatingnuclearreactorsintheCentralandEasternUnited States(CEUS).Thestudyconcludedthatsitespecificseismichazardsshowthatthere[]hasnot beenanoverallincreaseinseismicriskforthefleetofU.S.plantsbasedonthereevaluatedseismic hazards.Assuch,thecurrentseismicdesignofoperatingreactorscontinuestoprovideasafety margintowithstandpotentialearthquakesexceedingtheseismicdesignbasis.

TheNRCsMay9,2014NTTF2.1ScreeningandPrioritizationletter[15]concludedthatthefleetwide seismicriskestimatesareconsistentwiththeapproachandresultsusedintheGl199safety/risk assessment.TheletteralsostatedthatAsaresult,thestaffhasconfirmedthattheconclusions reachedinGl199safety/riskassessmentremainvalidandthattheplantscancontinuetooperate whileadditionalevaluationsareconducted.

AnassessmentofthechangeinseismicriskforWBNPwasincludedinthefleetriskevaluation submittedintheMarch12,2014NEIletter[13]therefore,theconclusionsintheNRCsMay9letter

[15]alsoapplytoWBNP.

Inaddition,theMarch12,2014NEIletter[13]providedanattachedPerspectivesontheSeismic CapacityofOperatingPlants,which(1)assessedanumberofqualitativereasonswhythedesignof SSCsinherentlycontainmarginbeyondtheirdesignlevel,(2)discussedindustrialseismicexperience databasesofperformanceofindustryfacilitycomponentssimilartonuclearSSCs,and(3)discussed earthquakeexperienceatoperatingplants.

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Page23 ThefleetofcurrentlyoperatingNPPswasdesignedusingconservativepractices,suchthattheplants havesignificantmargintowithstandlargegroundmotionssafely.Thishasbeenborneoutforthose plantsthathaveactuallyexperiencedsignificantearthquakes.Theseismicdesignprocesshasinherent (andintentional)conservatismswhichresultinsignificantseismicmarginswithinSSCs.These conservatismsarereflectedinseveralkeyaspectsoftheseismicdesignprocess,including:

Safetyfactorsappliedindesigncalculations DampingvaluesusedindynamicanalysisofSSCs BoundingsynthetictimehistoriesforISRScalculations BroadeningcriteriaforISRS ResponsespectraenvelopingcriteriatypicallyusedinSSCsanalysisandtestingapplications Responsespectrabasedfrequencydomainanalysis,ratherthanexplicittimehistorybasedtime domainanalysis Boundingrequirementsincodesandstandards Useofminimumstrengthrequirementsofstructuralcomponents(concreteandsteel)

Boundingtestingrequirements Ductilebehavioroftheprimarymaterials(thatis,notcreditingtheadditionalcapacityof materialssuchassteelandreinforcedconcretebeyondtheessentiallyelasticrange,etc.)

ThesedesignpracticescombinetoresultinmarginssuchthattheSSCswillcontinuetofulfilltheir functionsatgroundmotionswellabovetheSSE.

TheintentoftheESEPistoperformaninterimactioninresponsetotheNRCs50.54(f)letter[1]to demonstrateSeismicMarginthroughareviewofasubsetoftheplantequipmentthatcanberelied upontoprotecttheReactorCorefollowingbeyonddesignbasisseismicevents.Inordertocomplete theESEPinanexpeditedamountoftime,theRLGMusedfortheESEPevaluationisascaledversionof theplantsSSEratherthantheactualGMRS.Tomorefullycharacterizetheriskimpactsoftheseismic groundmotionrepresentedbytheGMRSonaplantspecificbasis,amoredetailedseismicrisk assessment(SPRAorriskbasedSMA)istobeperformedinaccordancewithEPRI1025287[16].As identifiedintheWBNPSeismicHazardandGMRSsubmittal[4],WBNPscreensinforariskevaluation.

Thecompleteriskevaluationwillmorecompletelycharacterizetheprobabilisticseismicground motioninputintotheplant,theplantresponsetothatprobabilisticseismicgroundmotioninput,and theresultingplantriskcharacterization.WBNPwillcompletethatevaluationinaccordancewiththe scheduleidentifiedinNEIsletterdatedApril9,2013[14]andendorsedbytheNRCintheirMay7, 2013letter[17].

8.2 IdentificationofPlannedModifications BasedontheHCLPFvaluesassignedaccordingtothemethodologydescribedinSection6.0,no necessaryplannedmodificationsareidentified.

8.3 ModificationImplementationSchedule PerSection8.2above,noschedulingofmodificationsisrequired.

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Page24 8.4 SummaryofRegulatoryCommitments TherearenoadditionalactionstobeperformedasaresultoftheESEP.

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Page25

9.0 REFERENCES

1.

NRC2012,RequestforInformationPursuanttoTitle10oftheCodeofFederal Regulations

50.54(f)RegardingRecommendations2.1,2.3and9.3oftheNearTermTaskForceReviewof

InsightsfromtheFukushimaDaiIchiAccident,NuclearRegulatoryCommission,March2012.

2.

ElectricPowerResearchInstitute(EPRI)3002000704,SeismicEvaluationGuidance:

AugmentedApproachfortheResolutionofFukushimaNearTermTaskForce

Recommendation2.1Seismic,May31,2013.

3.

TennesseeValleyAuthority(TVA),RevisedOverallIntegratedPlaninResponsetotheMarch12,

2012,CommissionOrderModifyingLicenseswithRegardtoRequirementsforMitigation

StrategiesforBeyondDesignBasisExternalEvents(OrderNumberEA12049)forWattsBar

NuclearPlant(TACNos.MF0950andMF1177),February7,2014.

4.

TVA,CNL14038,SeismicHazardandScreeningReport(CEUSSites),Enclosure4Seismic

HazardandScreeningReportforWattsBarNuclearPlant,March31,2014.

5.

EPRI,WattsBarSeismicHazardandScreeningReport,ElectricPowerResearchInstitute,Palo

Alto,CA,datedFebruary7,2014.

6.

N.M.NewmarkConsultingEngineeringServices,NUREG/CR0098,DevelopmentofCriteriafor

SeismicReviewofSelectedNuclearPowerPlants,1978.

7.

NotUsed 8.

EPRI1991,AMethodologyforAssessmentofNuclearPowerPlantSeismicMargin,EPRINP

6041SL,Revision1,ElectricPowerResearchInstitute,PaloAlto,CA,USA,August1991.

9.

EPRI,1991a,SeismicRuggednessofRelays,EPRI,PaloAlto,California:August1991,NP7147SL,

1991.

10.

EPRI1994,MethodologyforDevelopingSeismicFragilities,EPRITR103959,ElectricPower

ResearchInstitute,June1994.

11.

TVA,WattsBarNuclearPlantUnit1IndividualPlantEvaluationofExternalEvents-Final

Report,1998.

12.

TVACalculationCDQ0009992012000125,UpdatedWBNSeismicIPEEEHCLPFCapacity,

April2014.

13.

NEI2014,SeismicCoreDamageRiskEstimatesUsingtheUpdatedSeismicHazardsforthe

OperatingNuclearPlantsintheCentralandEasternUnitedStates,NuclearEnergyInstitute,

March2014.

14.

NEI2013,ProposedPathForwardforNTTFRecommendation2.1:SeismicReevaluations,

NuclearEnergyInstitute,April2013.

15.

NRC2014,ScreeningandPrioritizationResultsRegardingInformationPursuanttoTitle10of

theCodeofFederalRegulations50.54(F)RegardingSeismicHazardReEvaluationsfor

Recommendation2.1oftheNearTermTaskForceReviewofInsightsFromtheFukushima

DaiIchiAccident,NuclearRegulatoryCommission,May2014.

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Page26 16.

EPRI2013a,SeismicEvaluationGuidance:Screening,PrioritizationandImplementationDetails

(SPID)fortheresolutionofFukushimaNearTermTaskForceRecommendation2.1:Seismic,

EPRI1025287,ElectricPowerResearchInstitute,February2013 17.

NRC2013,ElectricPowerResearchInstituteFinalDraftReportXxxxxx,SeismicEvaluation

Guidance:AugmentedApproachfortheResolutionofFukushimaNearTermTaskForce

Recommendation2.1:Seismic,asanAcceptableAlternativetotheMarch12,2012,

InformationRequestforSeismicReevaluations,NuclearRegulatoryCommission,May2013.

18.

NRCADAMsNumberML12353A251,Enclosure1WattsBarNuclearPlant,Unit1Fukushima

NearTermTaskForceRecommendation2.3:SeismicResponseReport,2012.

19.

RIZZO,R15ESEPWalkdownofWattsBarNuclearPlantUnits1&2,October21,2014.

20.

RIZZO,F31,SummaryofHCLPFCalculationsforWBNPESEPReport,October21,2014.

21 TVA,2014,WattsBarNuclearPlantUnit2(WBN2)IndividualPlantExaminationofExternal

Events(IPEEE),Revision0,November10,2014.

22.

Scientech,2014,WBN2EnhancedIPEEERelayChatterAnalysisReport,Revision0,March4,

2014.

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NEI2013,PositionPaper:Shutdown/RefuelingModes.NuclearEnergyInstitute,September

2013.NRCADAMSNo.ML13273A514.

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RIZZO,R12,SeismicWalkdownofWattsBarNuclearPlantUnits1and2SeismicProbabilistic

RiskAssessmentProject,December22,2014.

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TVA,2014,WhitepaperWattsBarNuclearPlantExpeditedSeismicEquipmentList,December

20,2014.

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PageA1 ATTACHMENTAEXPEDITEDSEISMICEQUIPMENTLIST(ESEL)FORWATTSBAR NUCLEARPLANT

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PageA2 TableA1: EXPEDITEDSEISMICEQUIPMENTLIST(ESEL)FORWATTSBARNUCLEARPLANT ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 1

WBN1PNL 099R48A SolidState Protection SystemTrainA Operational Operational

2 WBN2PNL 099R50B SolidState Protection SystemTrainB Operational Operational

3 WBN2PNL 099R2D Reactor ProtectionI ProcessSystem Operational Operational

4 WBN2PNL 099R48A SolidState Protection SystemTrainA Operational Operational

5 WBN1PNL 099R50B SolidState Protection SystemTrainB Operational Operational

6 WBN2PNL 099R6E Reactor ProtectionII ProcessSystem Operational Operational

7 WBN1PNL 275R179A ICCMSystem TrainACH1 Operational Operational ICCMTrainAUnit1Unit1AuxiliaryInstrumentRoom 8

WBN2PNL 275R179A CommonQ PAMSPanel TrainA Operational Operational CommonQTrainAUnit2Unit2AuxiliaryInstrument Room 9

WBN1PNL 275R180B ICCMSystem TrainBCH2 Operational Operational ICCMTrainBUnit1Unit1AuxiliaryInstrumentRoom 10 WBN2PNL 275R180B CommonQ PAMSPanel TrainB Operational Operational CommonQTrainBunit2Unit2AuxiliaryInstrument Room

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PageA3 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 11 WBN2HIC 068396 RXHEADVENT FLOWCONTROL Operational Operational 0FSI8;MainControlRoompanelM4 12 WBN2PNL 099R46A SolidState Protection SystemTrainA Operational Operational

13 WBN2PNL 099R49B SolidState Protection SystemTrainB Operational Operational

14 WBN2PNL 099R6E Reactor ProtectionII ProcessSystem Operational Operational

15 WBN1 ACUM063 0001 SISAccumulator Tank1 Operational Operational

16 WBN1 ACUM063 0002 SISAccumulator Tank2 Operational Operational

17 WBN1 ACUM063 0003 SISAccumulator Tank3 Operational Operational

18 WBN1 ACUM063 0004 SISAccumulator Tank4 Operational Operational

19 WBN0BAT 2360001D 125VVital BatteryI Operational Operational

20 WBN0BAT 2360002E 125VVital BatteryII Operational Operational

21 WBN0BAT 2360003F 125VVital BatteryIII Operational Operational

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PageA4 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 22 WBN0BAT 2360004G 125VVital BatteryIV Operational Operational

23 WBN1BD 211AA 6.9KVShutdown Board1AA Operational Operational PrimaryPathOIPFigureA324,25,and26 24 WBN2BD 211BB 6.9KVShutdown Board2BB Operational Operational PrimaryPathOIPFigureA324andA326.

Also,seeESELItem200.

25 WBN1BD 212A001A 480VShutdown Board1A1A Operational Operational

26 WBN2BD 212A001A 480VShutdown Board2A1A Operational Operational ComponentCoolingSystemPump2AA 27 WBN1BD 212A002A 480VShutdown Board1A2A Operational Operational PrimaryPathOIPFigureA324,25,and26 28 WBN2BD 212B002B 480VShutdown Board2B2B Operational Operational ContainmentAirReturnFan39.ESEL#146.

29 WBN0BD 2360001D 125VVital BatteryBoardI Operational Operational

30 WBN0BD 2360002E 125VVital BatteryBoardII Operational Operational

31 WBN0BD 2360003F 125VVital BatteryBoardIII Operational Operational

32 WBN0BD 2360004G 125VVital BatteryBoardIV Operational Operational

33 WBN0CHGR 2360001D 125VVital BatteryChargerI Operational Operational

34 WBN0CHGR 2360002/E 125VVital BatteryCharger II Operational Operational

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PageA5 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 35 WBN0CHGR 2360003/F 125VVital BatteryCharger III Operational Operational

36 WBN0CHGR 2360004/G 125VVital BatteryCharger IV Operational Operational

37 WBN1HTX 0700185 CCSHEAT EXCHANGERA Operational Operational FlowpathtosupportSIPlubeoilcooler 38 WBN2HTX 0700185 CCSHEAT EXCHANGERB Operational Operational FlowpathtosupportSIPlubeoilcooler 39 WBN1HTX 0740030A RHRHEAT EXCHANGER1A Operational Operational RWSTgravityfeedpath FlowpathtosupportSIPlubeoilcooler 40 WBN2HTX 0740031A RHRHEAT EXCHANGER2A Operational Operational RWSTgravityfeedpath FlowpathtosupportSIPlubeoilcooler 41 WBN1INV 2350001D 120VACVital Inverter1I Operational Operational

42 WBN2INV 2350001D 120VACVital Inverter2I Operational Operational

43 WBN1INV 2350002E 120VACVital Inverter1II Operational Operational

44 WBN2INV 2350002E 120VACVital Inverter2II Operational Operational

45 WBN1INV 2350003F 120VACVital Inverter1III Operational Operational

46 WBN2INV 2350003F 120VACVital Inverter2III Operational Operational

47 WBN1INV 2350004G 120VACVital Inverter1IV Operational Operational

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PageA6 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 48 WBN2INV 2350004G 120VACVital Inverter2IV Operational Operational

49 WBN1MCC 213A001A 480VReactor MOVBoard1A1 A

Operational Operational FCV6380and118ColdLeg1and3Accumulator Isolation 50 WBN2MCC 213A001A 480VReactor MOVBoard2A1 A

Operational Operational FCV6380and118ColdLeg1and3Accumulator Isolation 51 WBN1MCC 213B001B 480VReactor MOVBoard1B1 B

Operational Operational FCV6398and67ColdLeg2and4Accumulator Isolation 52 WBN2MCC 213B001B 480VReactor MOVBoard2B1 B

Operational Operational FCV6398and67ColdLeg2and4Accumulator Isolation 53 WBN1MCC 214A001A Cont&AuxBldg VentBoard1A1 A

Operational Operational H2ignitersU1A 54 WBN2MCC 214B001B Cont&AuxBldg VentBoard2B1 B

Operational Operational H2ignitersU2B 55 WBN1MCC 214A002A Cont&AuxBldg VentBoard1A2 A

Operational Operational 2IP&1HPFLEXPump.OIPFigureA323 56 WBN2MCC 214B002B Cont&AuxBldg VentBoard2B2 B

Operational Operational 2IP&2HPFLEXPump.OIPFigureA323 57 WBN1OXF 212A001A 480V Transformer 1A1A Operational Operational

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PageA7 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 58 WBN2OXF 212A001A 480V Transformer 2A1A Operational Operational

59 WBN1OXF 212A002A 480V Transformer 1A2A Operational Operational OIPFigureA324and26,PrimaryPath 60 WBN2OXF 212B002B 480V Transformer 2B2B Operational Operational OIPFigureA324and26,PrimaryPath 61 WBN1PMP 0620108A Centrifugal ChargingPump 1AA Operational Operational PumpoilcoolerinflowpathtosupportSIPlubeoil cooler 62 WBN2PMP 0620108A Centrifugal ChargingPump 2AA Operational Operational Pump0ilcoolerinflowpathtosupportSIPlubeoil cooler 63 WBN1PMP 0630010A SAFETY INJECTIONPUMP 1AA Operational Operational OIPFigureA325PrimaryPath 64 WBN2PMP 0630010A SAFETY INJECTIONPUMP 2AA Operational Operational OIPFigureA325PrimaryPath 65 WBN1PMP 0700046A Component CoolingSystem Pump1AA Operational Operational supportSIPlubeoilcooler 66 WBN2PMP 0700059A Component CoolingSystem Pump2AA Operational Operational supportSIPlubeoilcooler 67 WBN1PMP 0740010A RHRPUMP1AA Operational Operational sealwaterheatexchangerinflowpath forSIPlubeoilcooler

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PageA8 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 68 WBN2PMP 0740020B RHRPUMP2BB Operational Operational sealwaterheatexchangerinflowpath forSIPlubeoilcooler 69 WBN1PNL 276L011A SteamGenerator LevelControl Panel Operational Operational AuxiliaryControlRoom 70 WBN2PNL 276L011A SteamGenerator LevelControl Panel Operational Operational AuxiliaryControlRoom 71 WBN1PNL 276L011B SteamGenerator LevelControl Panel Operational Operational AuxiliaryControlRoom 72 WBN2PNL 276L011B SteamGenerator LevelControl Panel Operational Operational AuxiliaryControlRoom 73 WBN1PNL 278M003 UNITCONT.

BOARDPNL1M 3

Operational Operational MainControlRoomPanelsM1throughM6

74 WBN2PNL 278M003 UNITCONT.

BOARDPNL2M 3

Operational Operational MainControlRoomPanelsM1throughM6

75 WBN1PNL 278M004 UNITCONT.

BOARDPNL1M 4

Operational Operational MainControlRoomPanelsM1throughM6 76 WBN2PNL 278M004 UNITCONT.

BOARDPNL2M 4

Operational Operational MainControlRoomPanelsM1throughM6 77 WBN1PNL 278M010 TEMPERATURE MONITORING Operational Operational MainControlRoomPanel

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PageA9 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 78 WBN2PNL 278M010 TEMPERATURE MONITORING Operational Operational MainControlRoomPanel 79 WBN1,2 TANK18 38,41 7DayFuelOil SupDslGen Available Available 1TANK1838DGA,1TANK1841DG3B 2TANK1838DG3A,2TANK1841DGB 80 WBN1TANK 0630046 RefuelingWater StorageTank Operational Operational CoolwithoutSG&RCSinventory 81 WBN2TANK 0630046 RefuelingWater StorageTank Operational Operational CoolwithoutSG&RCSinventory 82 WBN1TANK 0700001 Component CoolingWater SurgeTank Operational Operational FlowpathtosupportSIPlubeoilcooler 83 WBN2TANK 0700001 Component CoolingWater SurgeTank Operational Operational FlowpathtosupportSIPlubeoilcooler 84 WBN1FCV 0620063A CVCSSEAL WATERRETURN HEADERISOL Operational Operational ECA0.0App.AisolateRCPsealreturn 85 WBN2FCV 0620063A CVCSSEAL WATERRETURN HEADERISOL Operational Operational ECA0.0AppAisolateRCPsealreturn 86 WBN1FCV 0630067 Accumulator IsolationValve 4

Operational Operational 480VRMOVBdESELItem#51 87 WBN2FCV 0630067 Accumulator IsolationValve 4

Operational Operational 480VRMOVBdESELItem#52 88 WBN1FCV 0630080 Accumulator IsolationValve3 Operational Operational 480VRMOVBdESELItem#49

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PageA10 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 89 WBN2FCV 0630080 Accumulator IsolationValve3 Operational Operational 480VRMOVBdESELItem#50 90 WBN1FCV 0670083 LWRCNTMTA CLRSSUPCIV Open Closed FSI5.05AppendixA 91 WBN1FCV 0630098 Accumulator IsolationValve2 Operational Operational 480VRMOVBdESELItem#51 92 WBN2FCV 0630098 Accumulator IsolationValve2 Operational Operational 480VRMOVBdESELItem#52 93 WBN1FCV 0630118 Accumulator IsolationValve1 Operational Operational 480VRMOVBdESELItem#49 94 WBN2FCV 0630118 Accumulator IsolationValve1 Operational Operational 480VRMOVBdESELItem#50 95 WBN2FCV 0670083 LWRCNTMTA CLRSSUPCIV Open Closed FSI5.05App.A:alignERCWheader 96 WBN1FCV 0670091 LWRCNTMTC CLRSSUPCIV Open Closed FSI5.05App.A:alignERCWheader 97 WBN2FCV 0670091 LWRCNTMTC CLRSSUPCIV Open Closed FSI5.05App.A:alignERCWheader 98 WBN1FCV 0670099 LWRCNTMTB CLRSSUPCIV Open Closed FSI5.05App.A:alignERCWheader 99 WBN2FCV 0670099 LWRCNTMTB CLRSSUPCIV Open Closed FSI5.05App.A:alignERCWheader 100 WBN1FCV 0670107 LWRCNTMTD CLRSSUPCIV Open Closed FSI5.05App.A:alignERCWheader 101 WBN2FCV 0670107 LWRCNTMTD CLRSSUPCIV Open Closed FSI5.05App.A:alignERCWheader 102 WBN1FCV 0670130 UPRCNTMTCLR ASUPCIV Open Closed FSI5.05App.A:alignERCWheader

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PageA11 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 103 WBN2FCV 0670130 UPRCNTMTCLR ASUPCIV Open Closed FSI5.05App.A:alignERCWheader 104 WBN1FCV 0670133 UPRCNTMTCLR CSUPCIV Open Closed FSI5.05App.A:alignERCWheader 105 WBN2FCV 0670133 UPRCNTMTCLR CSUPCIV Open Closed FSI5.05App.A:alignERCWheader 106 WBN1FCV 0670138 UPRCNTMTCLR BSUPCIV Open Closed FSI5.05App.A:alignERCWheader 107 WBN2FCV 0670138 UPRCNTMTCLR BSUPCIV Open Closed FSI5.05App.A:alignERCWheader 108 WBN1FCV 0670141 UPRCNTMTCLR DSUPCIV Open Closed FSI5.05App.A:alignERCWheader 109 WBN2FCV 0670141 UPRCNTMTCLR DSUPCIV Open Closed FSI5.05App.A:alignERCWheader 110 WBN2FCV 0670143 CCSHXDISCHto HDRB Open Closed FSI5.05App.A:alignERCWheader 111 WBN1FCV 0670143 CCSHXDISCHto HDRB Open Closed FSI5.05App.A:alignERCWheader 112 WBN0FCV 0670144 CCSHXCDISCH toHDRA Operational Operational FS15.05step16 113 WBN2FCV 0680332B PRESSURIZER PORVBLOCK VALVE Open Open 0FSI8,TrainB 114 WBN1FCV 0680333 PRESSURIZER PORVBLOCK VALVE Open Open 0FSI8,TrainA 115 WBN1FCV 0700090A RCPumpTherm BarrierRet CNTNMTIsol Operational Operational ECA0.0App.AIsolatethermalbarrier

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PageA12 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 116 WBN2FCV 0700090A RCPumpTherm BarrierRet CNTNMTIsol Operational Operational ECA0.0App.AIsolatethermalbarrier 117 WBN1FCV 0700133A RCThermal BarrierContIsol Valve Operational Operational ECA0.0App.AIsolatethermalbarrier 118 WBN2FCV 0700133A RCThermal BarrierContIsol Valve Operational Operational ECA0.0App.AIsolatethermalbarrier 119 WBN2LCV 0020173B TDAFWPUMP SG#2Level Control Operational Operational FailsopenonlossofACpowerorcontrolair.

BackupN2supplybottlesavailable.

Manualoperationwithhandwheelisavailable.

120 WBN1LCV 0030172A TDAFWPUMP SG#3Level Control Operational Operational FailsopenonlossofACpowerorcontrolair.

BackupN2supplybottlesavailable.

Manualoperationwithhandwheelisavailable.

121 WBN2LCV 0030172A TDAFWPUMP SG#3Level Control Operational Operational FailsopenonlossofACpowerorcontrolair.

BackupN2supplybottlesavailable.

Manualoperationwithhandwheelisavailable.

122 WBN1LCV 0030173B TDAFWPUMP SG#2Level Control Operational Operational FailsopenonlossofACpowerorcontrolair.

BackupN2supplybottlesavailable.

Manualoperationwithhandwheelisavailable.

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PageA13 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 123 WBN1LCV 0030174B TDAFWPUMP SG#1Level Control Operational Operational FailsopenonlossofACpowerorcontrolair.

BackupN2supplybottlesavailable.

Manualoperationwithhandwheelisavailable.

124 WBN2LCV 0030174B TDAFWPUMP SG#1Level Control Operational Operational FailsopenonlossofACpowerorcontrolair.

BackupN2supplybottlesavailable.

Manualoperationwithhandwheelisavailable.

125 WBN1LCV 0030175A TDAFWPUMP SG#4Level Control Operational Operational FailsopenonlossofACpowerorcontrolair.

BackupN2supplybottlesavailable.

Manualoperationwithhandwheelisavailable.

126 WBN2LCV 0030175A TDAFWPUMP SG#4Level Control Operational Operational FailsopenonlossofACpowerorcontrolair.

BackupN2supplybottlesavailable.

Manualoperationwithhandwheelisavailable.

127 WBN1PCV 0010005T SG1MainSTM HDRPWRRelief ControlValve Operational Operational BackupN2supplybottlesavailable; Manualoperationwithhandwheelisavailable0FSI7.

128 WBN2PCV 0010005T SG1MainSTM HDRPWRRelief ControlValve Operational Operational BackupN2supplybottlesavailable; Manualoperationwithhandwheelisavailable0FSI7.

129 WBN1PCV 0010012T SG2MainSTM HDRPWRRelief ControlValve Operational Operational BackupN2supplybottlesavailable; Manualoperationwithhandwheelisavailable0FSI7.

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PageA14 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 130 WBN2PCV 0010012T SG2MainSTM HDRPWRRelief ControlValve Operational Operational BackupN2supplybottlesavailable; Manualoperationwithhandwheelisavailable0FSI7.

131 WBN1PCV 0010023T SG3MainSTM HDRPWRRelief ControlValve Operational Operational BackupN2supplybottlesavailable; Manualoperationwithhandwheelisavailable0FSI7.

132 WBN2PCV 0010023T SG3MainSTM HDRPWRRelief ControlValve Operational Operational BackupN2supplybottlesavailable; Manualoperationwithhandwheelisavailable0FSI7.

133 WBN1PCV 0010030T SG4MainSTM HDRPWRRelief ControlValve Operational Operational BackupN2supplybottlesavailable; Manualoperationwithhandwheelisavailable0FSI7.

134 WBN2PCV 0010030T SG4MainSTM HDRPWRRelief ControlValve Operational Operational BackupN2supplybottlesavailable; Manualoperationwithhandwheelisavailable0FSI7.

135 WBN2PCV 0680334 PRESSURIZER PORV Closed Operational 0FSI8,125VDCVitalBatteryBoardII 136 WBN1PCV 0680340A PRESSURIZER PORV Closed Operational 0FSI8,125VDCVitalBatteryBoardI 137 WBN1SFV 0010512 SteamGenerator

1. 3MainSteam SafetyValve Closed Operational

138 WBN2SFV 0010512 SteamGenerator

1. 3MainSteam SafetyValve Closed Operational

139 WBN1SFV 0010517 SteamGenerator

1. 2MainSteam SafetyValve Closed Operational

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PageA15 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 140 WBN2SFV 0010517 SteamGenerator

1. 2MainSteam SafetyValve Closed Operational

141 WBN1SFV 0010522 SteamGenerator

1. 1MainSteam SafetyValve Closed Operational

142 WBN2SFV 0010522 SteamGenerator

1. 1MainSteam SafetyValve Closed Operational

143 WBN1SFV 0010527 SteamGenerator

1. 4MainSteam SafetyValve Closed Operational

144 WBN2SFV 0010527 SteamGenerator

1. 4MainSteam SafetyValve Closed Operational

145 WBN1FAN 0300038 ContainmentAir ReturnFanAA Operational Operational 480VSDBdA1A,ESEL#25.

146 WBN2FAN 0300039 ContainmentAir ReturnFanBB Operational Operational 480VSDBdB2B,ESEL#28 147 WBN1EI235 001/A1 ACOUTPUT AMMETER INVERTER1I Operational Operational 0FSI7.125Vvitalbatteryboardvoltage 148 WBN1BD 2350001D 120VACVital Instrument PowerBoard1I Operational Operational

149 WBN1EI235 002/A1 ACOUTPUT AMMETER INVERTER1II Operational Operational 0FSI7.125Vvitalbatteryboardvoltage

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PageA16 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 150 WBN1BD 2350002E 120VACVital Instrument PowerBoard1II Operational Operational

151 WBN1BD 2350003F 120VACVital Instrument PowerBoard1III Operational Operational

152 WBN1BD 2350004G 120VACVital Instrument PowerBoard1 IV Operational Operational

153 WBN1CLR 0620108AA CCP1AALUBE OILCOOLER Operational Operational FlowpathtosupportSIPlubeoilcooler 154 WBN1CLR 0620108BA CCP1AAGEAR OILCOOLER Operational Operational FlowpathtosupportSIPlubeoilcooler 155 WBN1CLR 0630010 SAFETY INJECTIONPUMP 1AALUBEOIL COOLER Operational Operational FlowpathtosupportSIPlubeoilcooler 156 WBN1CLR 0720027 CNTMTSPRAY PUMP1AAOIL COOLER Operational Operational FlowpathtosupportSIPlubeoilcooler 157 WBN1HTX 0740010A RHRPUMP1AA SEALWATER HEAT EXCHANGER Operational Operational FlowpathtosupportSIPlubeoilcooler 158 WBN1XS 0030172AA STMGEN#3TRF SW Operational Operational AuxiliaryControlRoompanelL11A 159 WBN1XS 0030175AA STMGEN#4TRF SW Operational Operational AuxiliaryControlRoompanelL11A

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PageA17 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 160 WBN1XS 0030173AB STMGEN#2TRF SW Operational Operational AuxiliaryControlRoompanelL11B 161 WBN1XS 0030174AB STMGEN#1TRF SW Operational Operational AuxiliaryControlRoompanelL11B 162 WBN1XI046 57 TURBAFWP DEMAND Operational Operational MainControlRoompanelM3 163 WBN1FIC 0460057AS AUXFPTFLOW IND CONTROLLER Operational Operational MainControlRoompanelM4 164 WBN1HS 0460056AS TDAFWPMP Trip/Throttle Valve Handswitch AUTOMAN REMOTESP FORFIC4657B Operational Operational MainControlRoompanelM4 165 WBN1SI046 0056AS AFWTAS SPEED Operational Operational MainControlRoompanelM4 166 WBN1XI046 0054A AFWTAS MOPPOSITION Operational Operational MainControlRoompanelM4 167 WBN1XI068 0100 PlasmaDisplay Operational Operational ICCMTrainAUnit1MainControlRoom 168 WBN1XS 0680101 PlasmaDisplay KeyPad Operational Operational ICCMTrainAUnit1MainControlRoom 169 WBN1HS 068340AA RCSPRZRPWR RELIEFVALVE Operational Operational MainControlRoompanelM5 170 WBN2CPU 0946000 CommonQ Operator ModuleNode Box Operational Operational CommonQTrainBunit2MainControlRoom

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PageA18 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 171 WBN2FOC 0944001A CommonQfirst modem Operational Operational CommonQTrainBunit2MainControlRoom 172 WBN1HIC 068397 RXHEADVENT FLOWCONTROL Operational Operational MainControlRoompanelM6 173 WBN2HS 0630010A SISPUMPAA MOTOR Operational Operational MainControlRoompanelM6 174 WBN1HS 0630010A SISPUMPAA MOTOR Operational Operational MainControlRoompanelM6 175 WBN1HS 0300038A AIRRETFANAA ON/OFF Operational Operational MainControlRoompanelM9 176 WBN2HS 0300039B AIRRETFANBB ON/OFF Operational Operational MainControlRoompanelM9 177 WBN2EI235 001/A1 ACOUTPUT AMMETER INVERTER2I Operational Operational 125VVitalBatteryBoardVoltage 178 WBN2BD 2350001D 120VACVital Instrument PowerBoard2I Operational Operational

179 WBN2BD 2350002E 120VACVital Instrument PowerBoard2II Operational Operational

180 WBN2EI235 002/A1 ACOUTPUT AMMETER INVERTER2II Operational Operational 125VVitalBatteryBoardVoltage 181 WBN2BD 2350003F 120VACVital Instrument PowerBoard2III Operational Operational

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PageA19 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 182 WBN2BD 2350004G 120VACVital Instrument PowerBoard2 IV Operational Operational

183 WBN2CLR 0620108AA CCP2AALUBE OILCOOLER Operational Operational FlowpathtosupportSIPlubeoilcooler 184 WBN2CLR 0620108BA CCP2AAGEAR OILCOOLER Operational Operational FlowpathtosupportSIPlubeoilcooler 185 WBN2CLR 0630010 SAFETY INJECTIONPUMP 2AALUBEOIL COOLER Operational Operational FlowpathtosupportSIPlubeoilcooler 186 WBN2CLR 0720027 CNTMTSPRAY PUMP2AAOIL COOLER Operational Operational FlowpathtosupportSIPlubeoilcooler 187 WBN2HTX 0740010A RHRPUMP2AA SEALWATER HEAT EXCHANGER Operational Operational FlowpathtosupportSIPlubeoilcooler 188 WBN2XS 0030172AA STMGEN#3TRF SW Operational Operational AuxiliaryControlRoompanelL11A 189 WBN2XS 0030175AA STMGEN#4TRF SW Operational Operational AuxiliaryControlRoompanelL11A 190 WBN2XS 0030173AB STMGEN#2TRF SW Operational Operational AuxiliaryControlRoompanelL11B 191 WBN2XS 0030174AB STMGEN#1TRF SW Operational Operational AuxiliaryControlRoompanelL11B 192 WBN2XI046 57 TURBAFWP DEMAND Operational Operational MainControlRoomPanelM3

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PageA20 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 193 WBN2FIC 0460057AS AUXFPTFLOW IND CONTROLLER Operational Operational MainControlRoompanelM4 194 WBN2HS 0460056AS TDAFWPMP Trip/Throttle Valve Handswitch AUTOMAN REMOTESP FORFIC4657B Operational Operational MainControlRoompanelM4 195 WBN2SI046 0056AS AFWTAS SPEED Operational Operational MainControlRoompanelM4 196 WBN2XI046 0054A AFWTAS MOPPOSITION Operational Operational MainControlRoompanelM4 197 WBN2HS 068333A RCSPRZRREL FLOWCONTROL Operational Operational MainControlRoompanelM5 198 WBN2HIC 068397 RXHEADVENT FLOWCONTROL Operational Operational MainControlRoompanelM6 199 WBN2MON 0680110 PlasmaTouch ScreenDisplay Operational Operational CommonQTrainBUnit2MainControlRoom 200 WBN2BD 211AA 6.9kVShutdown Board2AA Operational Operational PrimaryPathOIPFigureA325 201 WBN2 ACUM063 0001 SISAccumulator Tank1 Operational Operational

202 WBN2 ACUM063 0002 SISAccumulator Tank2 Operational Operational

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PageA21 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 203 WBN2 ACUM063 0003 SISAccumulator Tank3 Operational Operational

204 WBN2 ACUM063 0004 SISAccumulator Tank4 Operational Operational

205 WBN1HIC 068396 RXHEADVENT FLOWCONTROL Operational Operational 0FSI8 206 WBN1PNL 099R2D Reactor ProtectionI ProcessSystem Operational Operational

207 WBN1PNL 099R46A SolidState Protection SystemTrainA Operational Operational

208 WBN1PNL 099R49B SolidState Protection SystemTrainB Operational Operational

209 WBN1PNL 099R6E Reactor ProtectionII ProcessSystem Operational Operational

210 WBN1PMP 0720027A Containment SprayPump1AA Operational Operational sealwaterHXinflowpathtosupportSIPoilcooler 211 WBN2PI001 0027D MAINSTEAM LOOP4 PRESSURE (typicalforeach SG)

Operational Operational LocalPanel2L381 212 WBN2HS 0460056BS TDAFWPMP TRIP/THV2FCV 151POSCNTL Operational Operational junctionbox2238TDAFWPRoom

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PageA22 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 213 WBN2PS 0020321 PressureSwitch toopenU2AOV 2FCV36386 fromAFW SupplyTank upon lowpressurein U1Condensate supplypiping.

Operational Operational

214 WBN1,2FSV 0036386 Solenoidvalveto openAFW SupplyTank insolationValve 1,2FCV36386 Operational Operational

215 WBN1FT63 151 SafetyInjection PumpFlow Operational Operational FT63151onrackL655 (refertoM6forFI63151) 216 WBN2FT63 20 SafetyInjection PumpFlow Operational Operational FT6320onrackL472 (refertoM6forFI6320) 217 WBN1PI001 0027D MAINSTEAM LOOP4 PRESSURE (typicalforeach SG)

Operational Operational Typicalforeachsteamgenerator.

LocalPanelL381,ESEL#247and248.

218 WBN1HS 0460056BS TDAFWPMP TRIP/THV1FCV 151POSCNTL Operational Operational junctionbox2238TDAFWPRoom 219 WBN0SW

3600103C, 203C FuelOilXFR Pump Disconnect Switch Standby Operational

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PageA23 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 220

Notused 221 WBN0PMP 360103,203 FuelOilSystem TransferPump Standby Operational

222 WBN0LIT 003227 LevelIndicating Transmitterfor theAFWSupply Tankand High/LowLevel Alarms Operational Operational YardAFWSupplyTankValveVault 223 WBN0FU1 3600103A PrimaryCntrl FuseforFuelOil PumpAStarter Standby Operational 0SW3600003A/1 224 WBN0FU1 3600103B SecondaryCntrl FuseforFuelOil PumpAStarter Standby Operational 0SW3600003A/1 225 WBN0FU1 3600103C PrimaryCntrl FuseforFuelOil PumpAStarter Standby Operational 0SW3600003A/1 226 WBN0FUDS 360FP/AM 480VFLEXMain PanelAMain Disconnect Standby Operational PNL360FP/A 227 WBN0FUDS 360FP/BM 480vFLEXMain PanelBMain Disconnect Standby Operational PNL360FP/B 228 WBN0XSW 2360004S 480vACVital TransferSwitch IV Operational Operational

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PageA24 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 229 WBN0XSW 2360003S 480vACVital TransferSwitch III Operational Operational

230 WBN0XSW 2360002S 480vACVital TransferSwitchII Operational Operational

231 WBN0XSW 2360001S 480vACVital TransferSwitchI Operational Operational

232 WBN0GNGC 360DG/A,B 480VFLEXDG Neutral Grounding ResistorBox Standby Operational

233 WBN0BKR 360DG/A,B 480VFLEXDG CircuitBreaker Standby Operational

234 WBN1HTR 268various Hydrogen IgnitersGroupA 34igniters Operational Operational 1SI2681Alistslocationsofigniters 235 WBN2HTR 268various Hydrogen IgnitersGroupB 34igniters Operational Operational 2SI2681Blistslocationsofigniters 236 WBN0RFV 0030005 Conservation ventvalvefor theAFWSupply Tank.

Operational Operational

237 WBN1FCV 0010052 TDAux FeedwaterPmp GovernorValve Operational Operational

238 WBN2FCV 0010052 TDAux FeedwaterPmp GovernorValve Operational Operational

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PageA25 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 239 WBN0PI003 1

Pressure indicatorforthe AFWSupplyTank Operational Operational YardAFWSupplyTankValveVault 240 WBN1PS 0020320 PressureSwitch toopenU1AOV 1FCV36386 fromAFW SupplyTank uponlow pressureinU1 Condensate supplypiping.

Operational Operational

241 WBN0BD 3600003A,3B 3MWDiesel Generator6.9KV Switchgear Standby Operational 3APrimaryU1,3BPrimaryU2OIPFigureA324and 26.

3APrimaryU1andU2OIPfigureA325.

242 WBN2DXF 2680002B Hydrogen Mitigation Transformer Operational Operational C&AVTBD2B1B,ESEL#54 243 WBN1DXF 2680001A Hydrogen Mitigation Transformer Operational Operational C&AVTBD1A1A,ESEL#53 244 WBN0DXF 360DG/AP, BP 480VFLEXDG2 KVASealed XFMR Standby Operational

245 WBN0XFMR 3603A/1, 3B/1 6900V3MW FLEXDieselGEN 20KVADryType Transformer Standby Operational

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PageA26 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 246 WBN0XFMR 3603A/2, 3B/2 6900V3MW FLEXDieselGEN 5KVADryType Transformer Standby Operational

247 WBN1PNL 276L381 TDAFWPControl Panel Operational Operational

248 WBN2PNL 276L381 TDAFWPControl Panel Operational Operational

249 WBN0PNL 360DG/A,B1 FuelOilTransfer PumpControl Panel Standby Operational

250 WBN0XSW 2360001AS 125VVitalBatt CHGRI480V FLEXTransfer Switch Standby Operational OIPFigureA322 251 WBN0XSW 2360002AS 125VVitalBatt CHGR2480V FLEXTransfer Switch Standby Operational OIPFigureA322 252 WBN0XSW 2360003AS 125VVitalBatt CHGR3480V FLEXTransfer Switch Standby Operational OIPFigureA322 253 WBN0XSW 2360004AS 125VVitalBatt CHGR4480V FLEXTransfer Switch Standby Operational OIPFigureA322 254 WBN0PNL 360FP/A 480VFLEXFuse PanelA Standby Operational OIPFigureA322

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PageA27 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 255 WBN0PNL 360FP/B 480VFLEXFuse PanelB Standby Operational OIPFigureA322 256 WBN1PNL 276L326S AUXFW TURBINESPEED CONTROLPANEL Operational Operational

257 WBN2PNL 276L326S AUXFW TURBINESPEED CONTROLPANEL Operational Operational

258 WBN0RES 360003A,3B 3MWDiesel Generator Neutral Grounding Resistor Standby Operational

259 WBN1PNL 276L381A AUXFEEDWATER CONTROL Operational Operational

260 WBN2PNL 276L381A AUXFEEDWATER CONTROL Operational Operational

261 WBN0XSW 360HPCS FLEXCOMMON SPAREHPPUMP TRANSFER SWITCH Standby Operational

262 WBN1XSW 82A DG1AATransfer SwitchTO6.9KV SDBD1AA Operational Operational Kirkkey,EDGXFSW1AA PrimaryPathOIPFigureA324,25,26 WalkdownIDforthisUNIDisWBN1XSW82A/2A 263 WBN2XSW 82A DG2AATransfer SwitchTO6.9KV SDBD2AA Operational Operational Kirkkey,EDGXSW2AA PrimaryPathOIPFigureA325 WalkdownIDforthisUNIDisWBN2XSW82A/2A

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PageA28 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 264 WBN1XSW 82B DG1BBTransfer SwitchDGCSto SDBD1BB Operational Operational Kirkkey 265 WBN2XSW 82B DG2BBTransfer SwitchDGCSto SDBD2BB Operational Operational Kirkkey,EDGXFSW2BB PrimaryPathOIPFigureA325and26 266 WBN0FUDS 360DG/AP2, BP2 480VFLEXDG Pump Disconnect Switch Standby Operational

267 WBN0STR 3600103,203 3MWFLEXDiesel GENPMP Starter Standby Operational

268 WBN0SW 3600003A/1, 3B/1 6900V3MW FLEXDieselGEN Fused Disconnect Switch Standby Operational

269 WBN1TE 0680380E ReactorLevel CaptubeTemp Comp Operational Operational CommonQTrainBUnit2 270 WBN2PNL 276L340 ReactorVessel instrumentation SystemIIPanel Operational Operational

271 WBN1PNL 276L388 ReactorVessel instrumentation SystemIPanel Operational Operational

272 WBN2TE 0680380E ReactorLevel CaptubeTemp Comp Operational Operational CommonQTrainBUnit2

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PageA29 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 273 WBN0LI3 227 AFWSupplyTank LevelIndicator Operational Operational

274 WBN1LI63 51 RWSTLevel Operational Operational LT6351onrackL435 (refertoM6forLI6351) 275 WBN2LI63 51 RWSTLevel Operational Operational LT6351onrackL435 (refertoM6forLI6351) 276 WBN1LPF3 142 TDAFWPump Flow Operational Operational FT3142onrackL656 (refertoM4forFI3142) 277 WBN2LPF3 142 TDAFWPump Flow Operational Operational FT3142onrackL215 (refertoM4forFI3142) 278 WBN1LPF3 147B AFWFlowS/G3 Operational Operational FT3147onrackL341 (refertoM3forFI3147) 279 WBN2LPF3 147B AFWFlowS/G3 Operational Operational FT3147onrackL912 (refertoM3forFI3147) 280 WBN1LPF3 155A AFWFlowS/G2 Operational Operational FT3155onrackL217 (refertoM3forFI3155) 281 WBN2LPF3 155A AFWFlowS/G2 Operational Operational FT3155onrackL193 (refertoM3forFI3155) 282 WBN1LPF3 163B AFWFlowS/G1 Operational Operational FT3163onrackL654 (refertoM3forFI3163) 283 WBN2LPF3 163B AFWFlowS/G1 Operational Operational FT3163onrackL654 (refertoM3forFI3163) 284 WBN1LPF3 170A AFWFlowS/G4 Operational Operational FT3170onrackL216 (refertoM3forFI3170) 285 WBN2LPF3 170A AFWFlowS/G4 Operational Operational FT3170onrackL216 (refertoM3forFI3170) 286 WBN1LPL3 111 S/GWRLevel Loop4 Operational Operational LT3111onrackL183 (refertoM4forLI3111)

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PageA30 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 287 WBN2LPL3 111 S/GWRLevel Loop4 Operational Operational LT3111onrackL183 (refertoM4forLI3111) 288 WBN1LPL3 148 S/GNRLevel Loop3 Operational Operational LT3148onrackL182 (refertoM3forLI3148) 289 WBN2LPL3 148 S/GNRLevel Loop3 Operational Operational LT3148onrackL182 (refertoM3forLI3148) 290 WBN1LPL3 156 S/GNRLevel Loop2 Operational Operational LT3156onrackL597 (refertoM3forLI3148) 291 WBN2LPL3 156 S/GNRLevel Loop2 Operational Operational LT3156onrackL597 (refertoM3forLI3148) 292 WBN1LPL3 164 S/GNRLevel Loop1 Operational Operational LT3164onrackL183 (refertoM3forLI3164) 293 WBN2LPL3 164 S/GNRLevel Loop1 Operational Operational LT3164onrackL183 (refertoM3forLI3164) 294 WBN1LPL3 171 S/GNRLevel Loop4 Operational Operational LT3171onrackL183 (refertoM3forLI3171) 295 WBN2LPL3 171 S/GNRLevel Loop4 Operational Operational LT3171onrackL183 (refertoM3forLI3171) 296 WBN1LPL3 43 S/GWRLevel Loop1 Operational Operational LT343onrackL183 (refertoM4forLI343) 297 WBN2LPL3 43 S/GWRLevel Loop1 Operational Operational LT343onrackL183 (refertoM4forLI343) 298 WBN1LPL3 56 S/GWRLevel Loop1 Operational Operational LT356onrackL182 (refertoM4forLI356) 299 WBN2LPL3 56 S/GWRLevel Loop2 Operational Operational LT356onrackL182 (refertoM4forLI356) 300 WBN1LPL3 98 S/GWRLevel Loop3 Operational Operational LT398onrackL182 (refertoM4forLI398)

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PageA31 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 301 WBN2LPL3 98 S/GWRLevel Loop3 Operational Operational LT398onrackL182 (refertoM4forLI398) 302 WBN1LPL 68335 PZRLevel Operational Operational LT68335onrackL660(refertoM4forLI68335) 303 WBN2LPL 68335 PZRLevel Operational Operational LT68335onrackL660 (refertoM4forLI68335) 304 WBN0LPL 7842 SFPLevel Operational Operational LT7842onrackL945 (referto2M10forLI7842) 305 WBN1LPN 92131 NuclearFlux Operational Operational detectorthroughamplifierandopticalisolator toindicatoronM13 306 WBN2LPN 92132 NuclearFlux Operational Operational detectorthroughamplifierandopticalisolator toindicatoronM13 307 WBN1LPP1 20A S/GPressure Loop3 Operational Operational PT120onrackL194 (refertoM4forPI120) 308 WBN2LPP1 20A S/GPressure Loop3 Operational Operational PT120onrackL194 (refertoM4forPI120) 309 WBN1LPP1 27B S/GPressure Loop4 Operational Operational PT127onrackL700 (refertoM4forPI127) 310 WBN2LPP1 27B S/GPressure Loop4 Operational Operational PT127onrackL196 (refertoM4forPI127) 311 WBN1LPP1 2A S/GPressure Loop1 Operational Operational PT12onrackL196 (refertoM4forPI12) 312 WBN2LPP1 2A S/GPressure Loop1 Operational Operational PT12onrackL196 (refertoM4forPI12) 313 WBN1LPP1 9A S/GPressure Loop2 Operational Operational PT19onrackL697 (refertoM4forPI19) 314 WBN2LPP1 9A S/GPressure Loop2 Operational Operational PT19onrackL194 (refertoM4forPI19)

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PageA32 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 315 WBN1LPP 6868 RCSWRPressure Operational Operational PT6868onrackL384 (refertoM6forPT6868) 316 WBN2LPP 6866 RCSWRPressure Operational Operational PT6866onrackL360 (refertoM6forPT6866A) 317 WBN1LPPD 30310 Containment Pressure Operational Operational PT30310onrackL188 (refertoM9forPI30310) 318 WBN2LPPD 30310 Containment Pressure Operational Operational PT30310onrackL188 (refertoM9forPI30310) 319 WBN1LPT 301032 Containment Temperature Operational Operational PNLR143 (refertoM6forTI301032) 320 WBN2LPT 301032 Containment Temperature Operational Operational PNLR143 (refertoM6forTI301032) 321 WBN1LPT 681 RCSWRThot Loop1 Operational Operational PNL099R2 (refertoM5forTI681) 322 WBN2LPT 681 RCSWRThot Loop1 Operational Operational PNL099R2 (refertoM5forTI681) 323 WBN1LPT 6818 RCSWRTcold Loop1 Operational Operational PNL099R2 (refertoM5forTI6818) 324 WBN2LPT 6818 RCSWRTcold Loop1 Operational Operational PNL099R2 (refertoM5forTI6818) 325 WBN1LPT 6841 RCSWRTcold Loop2 Operational Operational PNL099R2 (refertoM5forTI6841) 326 WBN2LPT 6841 RCSWRTcold Loop2 Operational Operational PNL099R2 (refertoM5forTI6841) 327 WBN1LPT 6860 RCSWRTcold Loop3 Operational Operational PNL099R6 (refertoM5forTI6860) 328 WBN2LPT 6860 RCSWRTcold Loop3 Operational Operational PNL099R6 (refertoM5forTI6860)

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PageA33 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 329 WBN1LPT 6883 RCSWRTcold Loop4 Operational Operational PNL099R6 (refertoM5forTI6883) 330 WBN2LPT 6883 RCSWRTcold Loop4 Operational Operational PNL099R6 (refertoM5forTI6883) 331 WBN1PNL 276L1000 PORVANDAFW LCVSTMGEN3

&4PNL Operational Operational FLEXNitrogenControlStation 332 WBN2PNL 276L1000 PORVANDAFW LCVSTMGEN3

&4PNL Operational Operational FLEXNitrogenControlStation 333 WBN1PNL 276L1001 PORVANDAFW LCVSTMGEN1

&2PNL Operational Operational FLEXNitrogenControlStation 334 WBN2PNL 276L1001 PORVANDAFW LCVSTMGEN1

&2PNL Operational Operational FLEXNitrogenControlStation 335 WBN1PNL 0940008AJ Incore Thermocouple MonSysJbox

ICCMTrainAUnit1 336 WBN1PNL 0940008BJ Incore Thermocouple MonSysJbox

ICCMTrainBUnit1 337 WBN0DPL 3600003A/1, 3B/1 480Volt Distribution Panel Standby Operational

338 WBN0DPL 3600003A/2, 3B/2 120/240VAC Panelboard Standby Operational

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PageA34 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 339 WBN2DPL 2680002B Hydrogen Mitigation Distribution Panel Operational Operational

340 WBN1DPL 2680001A Hydrogen Mitigation Distribution Panel Operational Operational

341 WBN0FUSD 360DG/AP1, BP1 480VFLEXDG PumpFusible DiscSwitch Standby Operational

342 WBN0DG

360000A, 000B 480VFLEX/ESBO 225KVADiesel Generator Standby Operational DGAPrimarytoBatteryBoards1and3 DGBPrimarytoBatteryBoards2and4;OIPfigA322.

343 WBN0DG 3600003A,3B 6900V3MW DieselGenerator

Standby Operational 3APrimaryU1,3BPrimaryU2OIPFigureA324,26.

3AprimaryU1andU2OIPFigureA325.

344 WBN1PMP 0030001AS TDAux FeedwaterPump 1AS Operational Operational AutomaticstartonLOOP 345 WBN2PMP 0030002AS TDAux FeedwaterPump 2AS Operational Operational AutomaticstartonLOOP 346 WBN0PMP 360DG/A1,B1 FuelOilTransfer Pump Standby Operational

347 WBN1PMP 360HP01 HPFLEXPump Standby Operational OIPFigureA323.

348 WBN2PMP 360HP01 HPFLEXPump Standby Operational OIPFigureA323.

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PageA35 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 349 WBN1PMP 360IP01 FLEXIPPUMP01 Standby Operational OIPFigureA34,A323.

350 WBN2PMP 360IP01 FLEXIPPUMP01 Standby Operational OIPFigureA34,A323 351 WBN1PMP 360IP02 FLEXIPPUMP02 Standby Operational OIPFigureA311,Mode5&6RCSMakeup.

OIPFigureA323 352 WBN2PMP 360IP02 FLEXIPPUMP02 Standby Operational OIPFigureA311.Mode5&6RCSMakeup OIPFigureA323.

353 WBN1FCV 0036386 FCVSHARED AFWTANK OUTLETPIPETO U1CONDENSATE Closed Open

354 WBN2FCV 0036386 FCVFORAFW SupplyTank OutletPipingto U2Condensate Closed Open

355 WBN0FCV 0700194B SFPHEAT EXCHANGERB CCSSUPPLY Operational Operational BoundaryValveforFlowpathtosupportSIP lubeoilcooler 356 WBN0FCV 0700197A SFPHEAT EXCHANGERA CCSSUPPLY Operational Operational BoundaryValveforFlowpathtosupportSIPlubeoil cooler 357 WBN0FCV 0670205 StaSer&CntlAir CmprSupplyHdr AIsolvalve Open Closed FSI5.05AppendixA alignERCWheader

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PageA36 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 358 WBN0FCV 0670208 StaSer&CntlAir CmprSupplyHdr BIsolvalve Open Closed FSI5.05AppendixA alignERCWheader 359 WBN1FCV 001051 TDAux FeedwaterPmp Trip&Throttle Valve Operational Operational normalpowersupply:125VVitalBatteryBoardIII 360 WBN2FCV 001051 TDAux FeedwaterPmp Trip&Throttle Valve Operational Operational normalpowersupply:125VVitalBatteryBoardI 361 WBN2FCV 0030179AB ERCWHeaderB TDAFWPMP SUCT(PS144)

Operational Operational switchovertoERCWheader.480VRMOVBD2B2B orhandwheel 362 WBN2FCV 0030136AA ERCWHeaderA TDAFWPMP SUCT(PS139)

Operational Operational switchovertoERCWheader.480VRMOVBD2A2A orhandwheel 363 WBN2FCV 0030136BA ERCWHeaderA TDAFWPMP SUCT Operational Operational switchovertoERCWheader.480VRMOVBD2A2A orhandwheel 364 WBN2FCV 0030179BB ERCWHeaderB TDAFWPMP SUCT Operational Operational switchovertoERCWheader.480VRMOVBD2B2B orhandwheel 365 WBN1FCV 0030136AA ERCWHeaderA TDAFWPMP SUCT(PS139)

Operational Operational switchovertoERCWheader.480VRMOVBD1A2A orhandwheel 366 WBN1FCV 0030136BA ERCWHeaderA TDAFWPMP SUCT Operational Operational switchovertoERCWheader.480VRMOVBD1A2A orhandwheel

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PageA37 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 367 WBN1FCV 0030179AB ERCWHeaderB TDAFWPMP SUCT(PS144)

Operational Operational switchovertoERCWheader.480VRMOVBD1B2B orhandwheel 368 WBN1FCV 0030179BB ERCWHeaderB TDAFWPMP SUCT Operational Operational switchovertoERCWheader.480VRMOVBD1B2B orhandwheel 369 WBN1FCV 0670147A CCSHXCSUP FROMHDR1A Admin locked closed Open FSI5.05AppendixA alignERCWheader 370 WBN1FCV 0670458A CCSHXCSUP FROMHDR1B Admin locked closed Open FSI5.05AppendixA alignERCWheader 371 WBN1TANK 30402A N2TANKNO.1 SUPPLYTO1 LCV0030173B Operational Operational

372 WBN1TANK 0010405A N2TANKNO.1 SUPTO1PCV 0010012B Operational Operational

373 WBN2TANK 0010405A N2TANKNO.1 SUPTO2PCV 0010012B Operational Operational

374 WBN1TANK 0010405B N2TANKNO.2 SUPTO1PCV 0010012B Operational Operational

375 WBN2TANK 0010405B N2TANKNO.2 SUPTO2PCV 0010012B Operational Operational

376 WBN1TANK 0010406A N2TANKNO.1 SUPTO1PCV 0010030B Operational Operational

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PageA38 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 377 WBN2TANK 0010406A N2TANKNO.1 SUPTO2PCV 0010030B Operational Operational

378 WBN1TANK 0010406B N2TANKNO.2 SUPTO1PCV 0010030B Operational Operational

379 WBN2TANK 0010406B N2TANKNO.2 SUPTO2PCV 0010030B Operational Operational

380 WBN1TANK 0010407A N2TANKNO.1 SUPTO1PCV 0010023A Operational Operational

381 WBN2TANK 0010407A N2TANKNO.1 SUPTO2PCV1 0023A Operational Operational

382 WBN1TANK 0010407B N2TANKNO.2 SUPTO1PCV 0010023A Operational Operational

383 WBN2TANK 0010407B N2TANKNO.2 SUPTO2PCV1 0023A Operational Operational

384 WBN1TANK 0010408A N2TANKNO.1 SUPTO1PCV 0010005A Operational Operational

385 WBN2TANK 0010408A N2TANKNO.1 SUPTO2PCV 0010005A Operational Operational

386 WBN1TANK 0010408B N2TANKNO.2 SUPTO1PCV 0010005A Operational Operational

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PageA39 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 387 WBN2TANK 0010408B N2TANKNO.1 SUPTO2PCV 0010005A Operational Operational

388 WBN2TANK 30402A N2TANKNO.1 SUPPLYTO2 LCV0030173B Operational Operational

389 WBN1TANK 30402B N2TANKNO.2 SUPPLYTO1 LCV0030173B Operational Operational

390 WBN2TANK 30402B N2TANKNO.2 SUPPLYTO2 LCV0030173B Operational Operational

391 WBN1TANK 30402C N2TANKNO.1 SUPPLYTO1 LCV0030174B Operational Operational

392 WBN2TANK 30402C N2TANKNO.1 SUPPLYTO2 LCV0030174B Operational Operational

393 WBN1TANK 30402D N2TANKNO.2 SUPPLYTO1 LCV0030174B Operational Operational

394 WBN2TANK 30402D N2TANKNO.2 SUPPLYTO2 LCV0030174B Operational Operational

395 WBN1TANK 30403A N2TANKNO.1 SUPTO1LCV 0030172A Operational Operational

396 WBN2TANK 30403A N2TANKNO.1 SUPTO2LCV3 172A Operational Operational

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PageA40 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 397 WBN1TANK 30403B N2TANKNO.2 SUPTO1LCV 003172A Operational Operational

398 WBN2TANK 30403B N2TANKNO.2 SUPTO2LCV3 172A Operational Operational

399 WBN1TANK 30403C N2TANKNO.1 SUPTO1LCV 0030175A Operational Operational

400 WBN2TANK 30403C N2TANKNO.1 SUPTO2LCV3 175A Operational Operational

401 WBN1TANK 30403D N2TANKNO.2 SUPTO1LCV 0030175A Operational Operational

402 WBN2TANK 30403D N2TANKNO.2 SUPTO2LCV3 175A Operational Operational

403 WBN0TANK 0030226 AFWSupplyTank 500,000gallons Operational Operational

404 WBN0TANK 360113,213 6900V3MW FLEXDGFuelOil StorageTank Standby Operational

405 WBN1CLR 0030001B TDAuxFWPMP OilCooler Operational Operational

406 WBN2CLR 0030001B TDAuxFWPMP OilCooler Operational Operational

407 WBN2RLY 0460057S TransferSwin AuxPosIsolRly Operational Operational T351/TycoPotter&Brumfield

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PageA41 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 408 WBN2RLY 046B002/1S B21RelayAFPT Trip&Throttle VlvPhotoIso Operational Operational StruthersDunn 409 WBN2RLY 046B002/2S B22RelayAFPT Trip&Throttle VlvPhotoIso Operational Operational StruthersDunn 410 WBN2RLY 046B002/3S B23RelayAFPT SpeedControl InstrPwr Operational Operational P297/Potter&Brumfield 411 WBN2RLY 046BAS BA&BBRelay AFPTSpeed ControlBuffer Relay Operational Operational A160/AllenBradleyCo.

412 WBN2RLY 046BA1S BA1RelayAFPT SpeedControl Buffer Operational Operational A160/AllenBradleyCo.

413 WBN2RLY 046BBS BA&BBRelay AFPTSpeed ControlBuffer Relay Operational Operational A160/AllenBradleyCo.

414 WBN2RLY 046R/AA AuxFWPump VlvSepRelay Operational Operational W120/WestinghouseElecCorp.

415 WBN2RLY 046R/BB AuxFWPump VlvSepRelay Operational Operational W120/WestinghouseElecCorp.

416 WBN2RLY 046R1S AFPTACCReset Relay Operational Operational A160/AllenBradleyCo.

417 WBN2RLY 046R2S AFPTACCReset Relay Operational Operational A160/AllenBradleyCo.

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PageA42 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 418 WBN2RLY 046R4A AFPTSUPXfer FCV115,16&

51SepRelayTR A

Operational Operational AllenBradleyCo.

419 WBN2RLY 046R5A AuxFeedPump TrbStmSupply XferSepRelayTR A

Operational Operational Agastat 420 WBN2RLY 046RA1A Turb/MtrDriven AuxFWPump VlvsAuxRelay Operational Operational W120/WestinghouseElecCorp.

421 WBN2RLY 046RA2A Turb/MtrDriven AuxFWPump VlvSSEPRelay Operational Operational W120/WestinghouseElecCorp.

422 WBN2RLY 046RASS AFPTPump2 FCV151MtrDr Vlv2LCV3156

&164 Operational Operational W120/WestinghouseElecCorp.

423 WBN2RLY 046RB1B Turb/MtrDriven AuxFWPump VlvsAuxRelay Operational Operational W120/WestinghouseElecCorp.

424 WBN2RLY 046RB2B TurbDrivenAux FWPumpVlv SEPRelay Operational Operational W120/WestinghouseElecCorp.

425 WBN2RLY 046RBSS AFPTPump2 FCV151MtrDr Vlv2LCV3171

&148 Operational Operational W120/WestinghouseElecCorp.

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PageA43 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 426 WBN2RLY 046SSTS AFPTSUPXfer FCV115,16&

51SepRelay Operational Operational A160/AllenBradleyCo.

427 WBN1RLY 0460057S TransferSwin AuxPosIsolRly Operational Operational T351/TycoPotter&Brumfield 428 WBN1RLY 046B002/1S B21RelayAFPT Trip&Throttle VlvPhotoIso Operational Operational StruthersDunn 429 WBN1RLY 046B002/2S B22RelayAFPT Trip&Throttle VlvPhotoIso Operational Operational StruthersDunn 430 WBN1RLY 046B002/3S B23RelayAFPT SpeedControl InstrPwr Operational Operational P297/Potter&Brumfield 431 WBN1RLY 046BAS BA&BBRelay AFPTSpeed ControlBuffer Relay Operational Operational A160/AllenBradleyCo.

432 WBN1RLY 046BA1S BA1RelayAFPT SpeedControl Buffer Operational Operational A160/AllenBradleyCo.

433 WBN1RLY 046BBS BA&BBRelay AFPTSpeed ControlBuffer Relay Operational Operational A160/AllenBradleyCo.

434 WBN1RLY 046R/AA AuxFWPump VlvSepRelay Operational Operational W120/WestinghouseElecCorp.

435 WBN1RLY 046R/BB AuxFWPump VlvSepRelay Operational Operational W120/WestinghouseElecCorp.

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PageA44 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 436 WBN1RLY 046R1S AFPTACCReset Relay Operational Operational A160/AllenBradleyCo.

437 WBN1RLY 046R2S AFPTACCReset Relay Operational Operational A160/AllenBradleyCo.

438 WBN1RLY 046R4A AFPTSUPXfer FCV115,16&

51SepRelayTR A

Operational Operational AllenBradleyCo.

439 WBN1RLY 046R5A AuxFeedPump TrbStmSupply XferSepRelayTR A

Operational Operational Agastat 440 WBN1RLY 046RA1A Turb/MtrDriven AuxFWPump VlvsAuxRelay Operational Operational W120/WestinghouseElecCorp.

441 WBN1RLY 046RA2A Turb/MtrDriven AuxFWPump VlvSSEPRelay Operational Operational W120/WestinghouseElecCorp.

442 WBN1RLY 046RASS AFPTPump2 FCV151MtrDr Vlv2LCV3156

&164 Operational Operational W120/WestinghouseElecCorp.

443 WBN1RLY 046RB1B Turb/MtrDriven AuxFWPump VlvsAuxRelay Operational Operational W120/WestinghouseElecCorp.

444 WBN1RLY 046RB2B TurbDrivenAux FWPumpVlv SEPRelay Operational Operational W120/WestinghouseElecCorp.

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PageA45 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 445 WBN1RLY 046RBSS AFPTPump2 FCV151MtrDr Vlv2LCV3171

&148 Operational Operational W120/WestinghouseElecCorp.

446 WBN1RLY 046SSTS AFPTSUPXfer FCV115,16&

51SepRelay Operational Operational A160/AllenBradleyCo.

447 WBN1STR 0460056AS TDAFW Trip/Throttle MotorStarter Operational Operational

448 WBN2STR 0460056AS TDAFW Trip/Throttle MotorStarter Operational Operational

449 WBN1FSV 0680394 ReactorVessel HeadVentIsol Operational Operational 125vDCVitalBatteryBdI 450 WBN1FSV 0680397 RVHVThrottle Valve Operational Operational 125vDCVitalBatteryBdI 451 WBN2FSV 0680395 RVHVIsolation Valve Operational Operational 125vDCVitalBatteryBdII 452 WBN2FSV 0680396 RVHVThrottle Valve Operational Operational 125vDCVitalBatteryBdII

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PageB1 ATTACHMENTBESEPHCLPFVALUESANDFAILUREMODESTABULATION FORWATTSBARNUCLEARPLANT

WattsBarNuclearPlantESEPReport

PageB2 TableB1:ESEPHCLPFVALUESANDFAILUREMODESFORWATTSBARNUCLEARPLANT

Item UNID Description Notes/Comments Failure Mode HCLPF(g) 1 WBN1 PNL099 R48A SolidState ProtectionSystem TrainA

Screened

>0.5 2

WBN2 PNL099 R50B SolidState ProtectionSystem TrainB

Screened

>0.5 3

WBN2 PNL099 R2D Reactor ProtectionI ProcessSystem

Screened

>0.5 4

WBN2 PNL099 R48A SolidState ProtectionSystem TrainA

Screened

>0.5 5

WBN1 PNL099 R50B SolidState ProtectionSystem TrainB

Screened

>0.5 6

WBN2 PNL099 R6E Reactor ProtectionII ProcessSystem

Screened

>0.5 7

WBN1 PNL275 R179A ICCMSystem TrainACH1

Screened

>0.5 8

WBN2 PNL275 R179A CommonQPAMS PanelTrainA

Screened

>0.5 9

WBN1 PNL275 R180B ICCMSystem TrainBCH2

Screened

>0.5 10 WBN2 PNL275 R180B CommonQPAMS PanelTrainB

Screened

>0.5 11 WBN2 HIC068 396 RXHEADVENT FLOWCONTROL

Screened

>0.5 12 WBN2 PNL099 R46A SolidState ProtectionSystem TrainA

Screened

>0.5 13 WBN2 PNL099 R49B SolidState ProtectionSystem TrainB

Screened

>0.5

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PageB3 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 14 WBN2 PNL099 R6E Reactor ProtectionII ProcessSystem

Screened

>0.5 15 WBN1 ACUM 0630001 SISAccumulator Tank1

Screened

>0.5 16 WBN1 ACUM 0630002 SISAccumulator Tank2

Screened

>0.5 17 WBN1 ACUM 0630003 SISAccumulator Tank3

Screened

>0.5 18 WBN1 ACUM 0630004 SISAccumulator Tank4

Screened

>0.5 19 WBN0 BAT236 0001D 125VVital BatteryI

Screened

>0.5 20 WBN0 BAT236 0002E 125VVital BatteryII

Screened

>0.5 21 WBN0 BAT236 0003F 125VVital BatteryIII

Screened

>0.5 22 WBN0 BAT236 0004G 125VVital BatteryIV

Screened

>0.5 23 WBN1 BD211 AA 6.9KVshutdown Board1AA

Screened

>0.5 24 WBN2 BD211 BB 6.9KVshutdown Board2BB

Screened

>0.5 25 WBN1 BD212 A001A 480VShutdown Board1A1A

Screened

>0.5 26 WBN2 BD212 A001A 480VShutdown Board2A1A

Screened

>0.5 27 WBN1 BD212 A002A 480VShutdown Board1A2A

Screened

>0.5

WattsBarNuclearPlantESEPReport

PageB4 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 28 WBN2 BD212 B002B 480VShutdown Board2B2B

Screened

>0.5 29 WBN0 BD236 0001D 125VVitalBattery BoardI

Screened

>0.5 30 WBN0 BD236 0002E 125VVitalBattery BoardII

Screened

>0.5 31 WBN0 BD236 0003F 125VVitalBattery BoardIII

Screened

>0.5 32 WBN0 BD236 0004G 125VVitalBattery BoardIV

Screened

>0.5 33 WBN0 CHGR 236 0001D 125VVital BatteryChargerI

Screened

>0.5 34 WBN0 CHGR 236 0002/E 125VVital BatteryChargerII

Screened

>0.5 35 WBN0 CHGR 236 0003/F 125VVital BatteryChargerIII

Screened

>0.5 36 WBN0 CHGR 236 0004/G 125VVital BatteryCharger IV

Screened

>0.5 37 WBN1 HTX070 0185 CCSHEAT EXCHANGERA

Screened

>0.5 38 WBN2 HTX070 0185 CCSHEAT EXCHANGERB

Screened

>0.5 39 WBN1 HTX074 0030A RHRHEAT EXCHANGER1A

Screened

>0.5

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PageB5 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 40 WBN2 HTX074 0031A RHRHEAT EXCHANGER2A

Screened

>0.5 41 WBN1 INV235 0001D 120VACVital Inverter1I

Screened

>0.5 42 WBN2 INV235 0001D 120VACVital Inverter2I

Screened

>0.5 43 WBN1 INV235 0002E 120VACVital Inverter1II

Screened

>0.5 44 WBN2 INV235 0002E 120VACVital Inverter2II

Screened

>0.5 45 WBN1 INV235 0003F 120VACVital Inverter1III

Screened

>0.5 46 WBN2 INV235 0003F 120VACVital Inverter2III

Screened

>0.5 47 WBN1 INV235 0004G 120VACVital Inverter1IV

Screened

>0.5 48 WBN2 INV235 0004G 120VACVital Inverter2IV

Screened

>0.5 49 WBN1 MCC 213 A001A 480VReactor MOVBoard1A1A

Screened

>0.5 50 WBN2 MCC 213 A001A 480VReactor MOVBoard2A1A

Screened

>0.5 51 WBN1 MCC 213 B001B 480VReactor MOVBoard1B1B

Screened

>0.5

WattsBarNuclearPlantESEPReport

PageB6 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 52 WBN2 MCC 213 B001B 480VReactor MOVBoard2B1B

Screened

>0.5 53 WBN1 MCC 214 A001A Cont&AuxBldg VentBoard1A1 A

Screened

>0.5 54 WBN2 MCC 214 B001B Cont&AuxBldg VentBoard2B1B

Screened

>0.5 55 WBN1 MCC 214 A002A Cont&AuxBldg VentBoard1A2 A

Screened

>0.5 56 WBN2 MCC 214 B002B Cont&AuxBldg VentBoard2B2B

Screened

>0.5 57 WBN1 OXF212 A001A 480V Transformer1A1 A

Screened

>0.5 58 WBN2 OXF212 A001A 480V Transformer2A1 A

Screened

>0.5 59 WBN1 OXF212 A002A 480V Transformer1A2 A

Screened

>0.5 60 WBN2 OXF212 B002B 480V Transformer2B2 B

Screened

>0.5 61 WBN1 PMP 062 0108A Centrifugal ChargingPump 1AA

Screened

>0.5 62 WBN2 PMP 062 0108A Centrifugal ChargingPump 2AA

Screened

>0.5

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PageB7 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 63 WBN1 PMP 063 0010A SAFETY INJECTIONPUMP 1AA

Screened

>0.5 64 WBN2 PMP 063 0015A SAFETY INJECTIONPUMP 2AA

Screened

>0.5 65 WBN1 PMP 070 0046A Component CoolingSystem Pump1AA

Screened

>0.5 66 WBN2 PMP 070 0059A Component CoolingSystem Pump2AA

Screened

>0.5 67 WBN1 PMP 074 0010A RHRPUMP1AA

Screened

>0.5 68 WBN2 PMP 074 0020B RHRPUMP2BB

Screened

>0.5 69 WBN1 PNL276 L011A SteamGenerator LevelControl Panel

Screened

>0.5 70 WBN2 PNL276 L011A SteamGenerator LevelControl Panel

Screened

>0.5 71 WBN1 PNL276 L011B SteamGenerator LevelControl Panel

Screened

>0.5 72 WBN2 PNL276 L011B SteamGenerator LevelControl Panel

Screened

>0.5 73 WBN1 PNL278 M003 UNITCONT.

BOARDPNL1M3

Screened

>0.5 74 WBN2 PNL278 M003 UNITCONT.

BOARDPNL2M3

Screened

>0.5

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PageB8 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 75 WBN1 PNL278 M004 UNITCONT.

BOARDPNL1M4

Screened

>0.5 76 WBN2 PNL278 M004 UNITCONT.

BOARDPNL2M4

Screened

>0.5 77 WBN1 PNL278 M010 TEMPERATURE MONITORING

Screened

>0.5 78 WBN2 PNL278 M010 TEMPERATURE MONITORING

Screened

>0.5 79 WBN1,2 TANK 018 0038,41 7DayFuelOilSup DslGen

Screened

>0.5 80 WBN1 TANK 0630046 RefuelingWater StorageTank

Screened

>0.5 81 WBN2 TANK 0630046 RefuelingWater StorageTank

Screened

>0.5 82 WBN1 TANK 0700001 Component CoolingWater SurgeTank

Screened

>0.5 83 WBN2 TANK 0700001 Component CoolingWater SurgeTank

Screened

>0.5 84 WBN1 FCV062 0063A CVCSSEAL WATERRETURN HEADERISOL

Screened

>0.5 85 WBN2 FCV062 0063A CVCSSEAL WATERRETURN HEADERISOL

Screened

>0.5 86 WBN1 FCV063 0067 Accumulator IsolationValve4

Screened

>0.5 87 WBN2 FCV063 0067 Accumulator IsolationValve4

Screened

>0.5

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PageB9 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 88 WBN1 FCV063 0080 Accumulator IsolationValve3

Screened

>0.5 89 WBN2 FCV063 0080 Accumulator IsolationValve3

Screened

>0.5 90 WBN1 FCV067 0083 LWRCNTMTA CLRSSUPCIV

Screened

>0.5 91 WBN1 FCV063 0098 Accumulator IsolationValve2

Screened

>0.5 92 WBN2 FCV063 0098 Accumulator IsolationValve2

Screened

>0.5 93 WBN1 FCV063 0118 Accumulator IsolationValve1

Screened

>0.5 94 WBN2 FCV063 0118 Accumulator IsolationValve1

Screened

>0.5 95 WBN2 FCV067 0083 LWRCNTMTA CLRSSUPCIV

Screened

>0.5 96 WBN1 FCV067 0091 LWRCNTMTC CLRSSUPCIV

Screened

>0.5 97 WBN2 FCV067 0091 LWRCNTMTC CLRSSUPCIV

Screened

>0.5 98 WBN1 FCV067 0099 LWRCNTMTB CLRSSUPCIV

Screened

>0.5 99 WBN2 FCV067 0099 LWRCNTMTB CLRSSUPCIV

Screened

>0.5 100 WBN1 FCV067 0107 LWRCNTMTD CLRSSUPCIV

Screened

>0.5 101 WBN2 FCV067 0107 LWRCNTMTD CLRSSUPCIV

Screened

>0.5

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PageB10 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 102 WBN1 FCV067 0130 UPRCNTMTCLR ASUPCIV

Screened

>0.5 103 WBN2 FCV067 0130 UPRCNTMTCLR ASUPCIV

Screened

>0.5 104 WBN1 FCV067 0133 UPRCNTMTCLRC SUPCIV

Screened

>0.5 105 WBN2 FCV067 0133 UPRCNTMTCLRC SUPCIV

Screened

>0.5 106 WBN1 FCV067 0138 UPRCNTMTCLRB SUPCIV

Screened

>0.5 107 WBN2 FCV067 0138 UPRCNTMTCLRB SUPCIV

Screened

>0.5 108 WBN1 FCV067 0141 UPRCNTMTCLR DSUPCIV

Screened

>0.5 109 WBN2 FCV067 0141 UPRCNTMTCLR DSUPCIV

Screened

>0.5 110 WBN2 FCV067 0143 CCSHXDISCHto HDRB

Screened

>0.5 111 WBN1 FCV067 0143 CCSHXDISCHto HDRB

Screened

>0.5 112 WBN0 FCV067 0144 CCSHXCDISCHto HDRA

Screened

>0.5 113 WBN2 FCV068 0332B PRESSURIZER PORVBLOCK VALVE

Screened

>0.5 114 WBN1 FCV068 0333 PRESSURIZER PORVBLOCK VALVE

Screened

>0.5 115 WBN1 FCV070 0090A RCPumpTherm BarrierRet CNTNMTIsol

Screened

>0.5

WattsBarNuclearPlantESEPReport

PageB11 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 116 WBN2 FCV070 0090A RCPumpTherm BarrierRet CNTNMTIsol

Screened

>0.5 117 WBN1 FCV070 0133A RCThermal BarrierContIsol Valve

Screened

>0.5 118 WBN2 FCV070 0133A RCThermal BarrierContIsol Valve

Screened

>0.5 119 WBN2 LCV002 0173B TDAFWPUMPSG

1. 2LevelControl

Screened

>0.5 120 WBN1 LCV003 0172A TDAFWPUMPSG

1. 3LevelControl

Screened

>0.5 121 WBN2 LCV003 0172A TDAFWPUMPSG

1. 3LevelControl

Screened

>0.5 122 WBN1 LCV003 0173B TDAFWPUMPSG

1. 2LevelControl

Screened

>0.5 123 WBN1 LCV003 0174B TDAFWPUMPSG

1. 1LevelControl

Screened

>0.5 124 WBN2 LCV003 0174B TDAFWPUMPSG

1. 1LevelControl

Screened

>0.5 125 WBN1 LCV003 0175A TDAFWPUMPSG

1. 4LevelControl

Screened

>0.5

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PageB12 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 126 WBN2 LCV003 0175A TDAFWPUMPSG

1. 4LevelControl

Screened

>0.5 127 WBN1 PCV001 0005T SG1MainSTM HDRPWRRelief ControlValve

Screened

>0.5 128 WBN2 PCV001 0005T SG1MainSTM HDRPWRRelief ControlValve

Screened

>0.5 129 WBN1 PCV001 0012T SG2MainSTM HDRPWRRelief ControlValve

Screened

>0.5 130 WBN2 PCV001 0012T SG2MainSTM HDRPWRRelief ControlValve

Screened

>0.5 131 WBN1 PCV001 0023T SG3MainSTM HDRPWRRelief ControlValve

Screened

>0.5 132 WBN2 PCV001 0023T SG3MainSTM HDRPWRRelief ControlValve

Screened

>0.5 133 WBN1 PCV001 0030T SG4MainSTM HDRPWRRelief ControlValve

Screened

>0.5 134 WBN2 PCV001 0030T SG4MainSTM HDRPWRRelief ControlValve

Screened

>0.5 135 WBN2 PCV068 0334 PRESSURIZER PORV

Screened

>0.5 136 WBN1 PCV068 0340A PRESSURIZER PORV

Screened

>0.5 137 WBN1 SFV001 0512 SteamGenerator

1. 3MainSteam SafetyValve

Screened

>0.5 138 WBN2 SFV001 0512 SteamGenerator

1. 3MainSteam SafetyValve

Screened

>0.5

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PageB13 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 139 WBN1 SFV001 0517 SteamGenerator

1. 2MainSteam SafetyValve

Screened

>0.5 140 WBN2 SFV001 0517 SteamGenerator

1. 2MainSteam SafetyValve

Screened

>0.5 141 WBN1 SFV001 0522 SteamGenerator

1. 1MainSteam SafetyValve

Screened

>0.5 142 WBN2 SFV001 0522 SteamGenerator

1. 1MainSteam SafetyValve

Screened

>0.5 143 WBN1 SFV001 0527 SteamGenerator

1. 4MainSteam SafetyValve

Screened

>0.5 144 WBN2 SFV001 0527 SteamGenerator

1. 4MainSteam SafetyValve

Screened

>0.5 145 WBN1 FAN030 0038 ContainmentAir ReturnFanAA

Screened

>0.5 146 WBN2 FAN030 0039 ContainmentAir ReturnFanBB

Screened

>0.5 147 WBN1 EI235 001/A1 ACOUTPUT AMMETER INVERTER1I

Screened

>0.5 148 WBN1 BD235 0001D 120VACVital InstrumentPower Board1I

Screened

>0.5 149 WBN1 EI235 002/A1 ACOUTPUT AMMETER INVERTER1II

Screened

>0.5 150 WBN1 BD235 0002E 120VACVital InstrumentPower Board1II

Screened

>0.5 151 WBN1 BD235 0003F 120VACVital InstrumentPower Board1III

Screened

>0.5 152 WBN1 BD235 0004G 120VACVital InstrumentPower Board1IV

Screened

>0.5

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PageB14 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 153 WBN1 CLR062 0108AA CCP1AALUBE OILCOOLER

Screened

>0.5 154 WBN1 CLR062 0108BA CCP1AAGEAR OILCOOLER

Screened

>0.5 155 WBN1 CLR063 0010 SAFETY INJECTIONPUMP 1AALUBEOIL COOLER

Screened

>0.5 156 WBN1 CLR072 0027 CNTMTSPRAY PUMP1AAOIL COOLER

Screened

>0.5 157 WBN1 HTX074 0010A RHRPUMP1AA SEALWATER HEATEXCHANGER

Screened

>0.5 158 WBN1 XS003 0172AA STMGEN#3TRF SW

Screened

>0.5 159 WBN1 XS003 0175AA STMGEN#4TRF SW

Screened

>0.5 160 WBN1 XS003 0173AB STMGEN#2TRF SW

Screened

>0.5 161 WBN1 XS003 0174AB STMGEN#1TRF SW

Screened

>0.5 162 WBN1 XI04657 TURBAFWP DEMAND

Screened

>0.5 163 WBN1 FIC046 0057AS AUXFPTFLOW INDCONTROLLER

Screened

>0.5 164 WBN1 HS046 0056AS TDAFWPMP Trip/Throttle ValveHandswitch AUTOMAN REMOTESP FORFIC4657B

Screened

>0.5 165 WBN1 SI046 0056AS AFWTAS SPEED

Screened

>0.5

WattsBarNuclearPlantESEPReport

PageB15 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 166 WBN1 XI046 0054A AFWTAS MOPPOSITION

Screened

>0.5 167 WBN1 XI068 0100 PlasmaDisplay

Screened

>0.5 168 WBN1 XS068 0101 PlasmaDisplay KeyPad

Screened

>0.5 169 WBN1 HS068 340AA RCSPRZRPWR RELIEFVALVE

Screened

>0.5 170 WBN2 CPU094 6000 CommonQ OperatorModule NodeBox

Screened

>0.5 171 WBN2 FOC094 4001A CommonQfirst modem

Screened

>0.5 172 WBN1 HIC068 397 RXHEADVENT FLOWCONTROL

Screened

>0.5 173 WBN2 HS063 0010A SISPUMPAA MOTOR

Screened

>0.5 174 WBN1 HS063 0010A SISPUMPAA MOTOR

Screened

>0.5 175 WBN1 HS030 0038A AIRRETFANAA ON/OFF

Screened

>0.5 176 WBN2 HS030 0039B AIRRETFANBB ON/OFF

Screened

>0.5 177 WBN2 EI235 001/A1 ACOUTPUT AMMETER INVERTER2I

Screened

>0.5 178 WBN2 BD235 0001D 120VACVital InstrumentPower Board2I

Screened

>0.5 179 WBN2 BD235 0002E 120VACVital InstrumentPower Board2II

Screened

>0.5

WattsBarNuclearPlantESEPReport

PageB16 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 180 WBN2 EI235 002/A1 ACOUTPUT AMMETER INVERTER2II

Screened

>0.5 181 WBN2 BD235 0003F 120VACVital InstrumentPower Board2III

Screened

>0.5 182 WBN2 BD235 0004G 120VACVital InstrumentPower Board2IV

Screened

>0.5 183 WBN2 CLR062 0108AA CCP2AALUBE OILCOOLER

Screened

>0.5 184 WBN2 CLR062 0108BA CCP2AAGEAR OILCOOLER

Screened

>0.5 185 WBN2 CLR063 0010 SAFETY INJECTIONPUMP 2AALUBEOIL COOLER

Screened

>0.5 186 WBN2 CLR072 0027 CNTMTSPRAY PUMP2AAOIL COOLER

Screened

>0.5 187 WBN2 HTX074 0010A RHRPUMP2AA SEALWATER HEATEXCHANGER

Screened

>0.5 188 WBN2 XS003 0172AA STMGEN#3TRF SW

Screened

>0.5 189 WBN2 XS003 0175AA STMGEN#4TRF SW

Screened

>0.5 190 WBN2 XS003 0173AB STMGEN#2TRF SW

Screened

>0.5 191 WBN2 XS003 0174AB STMGEN#1TRF SW

Screened

>0.5 192 WBN2 XI04657 TURBAFWP DEMAND

Screened

>0.5 193 WBN2 FIC046 0057AS AUXFPTFLOW INDCONTROLLER

Screened

>0.5

WattsBarNuclearPlantESEPReport

PageB17 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 194 WBN2 HS046 0056AS TDAFWPMP Trip/Throttle ValveHandswitch AUTOMAN REMOTESP FORFIC4657B

Screened

>0.5 195 WBN2 SI046 0056AS AFWTAS SPEED

Screened

>0.5 196 WBN2 XI046 0054A AFWTAS MOPPOSITION

Screened

>0.5 197 WBN2 HS068 333A RCSPRZRREL FLOWCONTROL

Screened

>0.5 198 WBN2 HIC068 397 RXHEADVENT FLOWCONTROL

Screened

>0.5 199 WBN2 MON 0680110 PlasmaTouch ScreenDisplay

Screened

>0.5 200 WBN2 BD211A 6.9KVshutdown Board2AA

Screened

>0.5 201 WBN2 ACUM 0630001 SISAccumulator Tank1

Screened

>0.5 202 WBN2 ACUM 0630002 SISAccumulator Tank2

Screened

>0.5 203 WBN2 ACUM 0630003 SISAccumulator Tank3

Screened

>0.5 204 WBN2 ACUM 0630004 SISAccumulator Tank4

Screened

>0.5 205 WBN1 HIC068 396 RXHEADVENT FLOWCONTROL

Screened

>0.5 206 WBN1 PNL099 R2D Reactor ProtectionI ProcessSystem

Screened

>0.5

WattsBarNuclearPlantESEPReport

PageB18 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 207 WBN1 PNL099 R46A SolidState ProtectionSystem TrainA

Screened

>0.5 208 WBN1 PNL099 R49B SolidState ProtectionSystem TrainB

Screened

>0.5 209 WBN1 PNL099 R6E Reactor ProtectionII ProcessSystem

Screened

>0.5 210 WBN1 PMP 072 0027A Containment SprayPump1AA

Screened

>0.5 211 WBN2 PI001 0027D MAINSTEAM LOOP4 PRESSURE (typicalforeach SG)

Anchorage 0.56 212 WBN2 HS046 0056BS TDAFWPMP TRIP/THV2FCV 151POSCNTL

Functionality 0.57 213 WBN2 PS002 0321 PressureSwitch toopenU2AOV 2FCV36386 fromAFWSupply Tankupon lowpressurein U1Condensate supplypiping.

Functionality 0.83 214 WBN1,2 FSV003 6386 Solenoidvalveto openAFWSupply Tankinsolation Valve1,2FCV3 6386

Functionality 0.83 215 WBN1 FT63 151 SafetyInjection PumpFlow

Anchorage

>0.5 216 WBN2 FT6320 SafetyInjection PumpFlow

Anchorage

>0.5

WattsBarNuclearPlantESEPReport

PageB19 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 217 WBN1 PI001 0027D MAINSTEAM LOOP4 PRESSURE (typicalforeach SG)

Anchorage 0.56 218 WBN1 HS046 0056BS TDAFWPMP TRIP/THV1FCV 151POSCNTL

Functionality 0.57 219 WBN0 SW360

103C, 203C FuelOilTransfer PmpDisconnect SW HCLPFassociated withItem#404 FuelOilStorage Tank.Ruleofbox.

Anchorage 0.66 220

NotUsed

221 WBN0 PMP

360103, 203 FuelOilSystem TransferPump HCLPFassociated withItem#404 FuelOilStorage Tank.Ruleofbox.

Anchorage 0.66 222 WBN0 LIT003 227 LevelIndicating Transmitterfor theAFWSupply Tankand High/LowLevel Alarms

Anchorage 0.51 223 WBN0 FU1360 0103A PrimaryCntrl FuseforFuelOil PumpAStarter HCLPFassociated withItem#267, andconservatively assignedas0.5g.

Ruleofbox.

Anchorage 0.5 224 WBN0 FU1360 0103B SecondaryCntrl FuseforFuelOil PumpAStarter HCLPFassociated withItem#267, andconservatively assignedas0.5g.

Ruleofbox.

Anchorage 0.5 225 WBN0 FU1360 0103C PrimaryCntrl FuseforFuelOil PumpAStarter HCLPFassociated withItem#267, andconservatively assignedas0.5g.

Ruleofbox.

Anchorage 0.5 226 WBN0 FUDS 360 FP/AM 480VFLEXMain PanelAMain Disconnect

Functionality 0.57

WattsBarNuclearPlantESEPReport

PageB20 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 227 WBN0 FUDS 360 FP/BM 480vFLEXMain PanelBMain Disconnect

Functionality 0.57 228 WBN0 XSW236 0004S 480vACVital TransferSwitchIV

Functionality 0.50 229 WBN0 XSW236 0003S 480vACVital TransferSwitchIII

Functionality 0.50 230 WBN0 XSW236 0002S 480vACVital TransferSwitchII

Functionality 0.50 231 WBN0 XSW236 0001S 480vACVital TransferSwitchI

Functionality 0.50 232 WBN0 GNGC 360 DG/A,B 480VFLEXDG Neutral Grounding ResistorBox HCLPFassigned basedonJunction Boxsubgroup fromHCLPFcalc Functionality 0.57 233 WBN0 BKR360 DG/A,B 480VFLEXDG CircuitBreaker

Functionality 0.57 234 WBN1 HTR268 various HydrogenIgniters GroupA34 igniters

screened (rugged) 0.5 235 WBN2 HTR268 various HydrogenIgniters GroupB34 igniters

screened (rugged) 0.5 236 WBN0 RFV003 0005 Conservationvent valvefortheAFW SupplyTank.

screened (Table2.4) 0.5 237 WBN1 FCV001 0052 TDAuxFeedwater PmpGovernor Valve

screened 0.5 238 WBN2 FCV001 0052 TDAuxFeedwater PmpGovernor Valve

screened 0.5 239 WBN0 PI0031 Pressureindicator fortheAFW SupplyTank

screened (rugged) 0.5

WattsBarNuclearPlantESEPReport

PageB21 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 240 WBN1 PS002 0320 PressureSwitch toopenU1AOV 1FCV36386 fromAFWSupply Tankuponlow pressureinU1 Condensate supplypiping.

screened (rugged) 0.5 241 WBN0 BD360

0003A, 3B 3MWDiesel Generator6.9KV Switchgear

Functionality 0.68 242 WBN2 DXF268 0002B Hydrogen Mitigation Transformer

Anchorage 0.51 243 WBN1 DXF268 0001A Hydrogen Mitigation Transformer

Anchorage 0.51 244 WBN0 DXF360 DG/AP, BP 480VFLEXDG2 KVASealedXFMR

Functionality 0.57 245 WBN0 XFMR 360 3A/1, 3B/1 6900V3MWFLEX DieselGEN20 KVADryType Transformer

Functionality 0.58 246 WBN0 XFMR 360 3A/2, 3B/2 6900V3MWFLEX DieselGEN5KVA DryType Transformer

Functionality 0.57 247 WBN1 PNL276 L381 TDAFWPControl Panel

Anchorage 0.56 248 WBN2 PNL276 L381 TDAFWPControl Panel

Anchorage 0.56 249 WBN0 PNL360 DG/A1 FuelOilTransfer PumpControl Panel

Functionality 0.65

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PageB22 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 250 WBN0 XSW236 0001AS 125VVitalBatt CHGRI480V FLEXTransfer Switch

Functionality 0.58 251 WBN0 XSW236 0002AS 125VVitalBatt CHGR2480V FLEXTransfer Switch

Functionality 0.58 252 WBN0 XSW236 0003AS 125VVitalBatt CHGR3480V FLEXTransfer Switch

Functionality 0.58 253 WBN0 XSW236 0004AS 125VVitalBatt CHGR4480V FLEXTransfer Switch

Functionality 0.58 254 WBN0 PNL360 FP/A 480VFLEXFuse PanelA

Functionality 0.57 255 WBN0 PNL360 FP/B 480VFLEXFuse PanelB

Functionality 0.57 256 WBN1 PNL276 L326S AUXFWTURBINE SPEEDCONTROL PANEL

Functionality 0.85 257 WBN2 PNL276 L326S AUXFWTURBINE SPEEDCONTROL PANEL

Functionality 0.85 258 WBN0 RES360 003A,3B 3MWDiesel Generator Neutral Grounding Resistor

Functionality 0.79 259 WBN1 PNL276 L381A AUXFEEDWATER CONTROL

Functionality 0.57 260 WBN2 PNL276 L381A AUXFEEDWATER CONTROL

Functionality 0.57

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PageB23 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 261 WBN0 XSW360 HPCS FLEXCOMMON SPAREHPPUMP TRANSFER SWITCH

Functionality 0.57 262 WBN1 XSW82 A

DG1AATransfer SwitchTO6.9KV SDBD1AA

Functionality 0.57 263 WBN2 XSW82 A

DG2AATransfer SwitchTO6.9KV SDBD2AA

Functionality 0.57 264 WBN1 XSW82 B

DG1BBTransfer SwitchDGtoSD BD1BB

Functionality 0.57 265 WBN2 XSW82 B

DG2BBTransfer SwitchDGtoSD BD2BB

Functionality 0.57 266 WBN0 FUDS 360 DG/AP2, BP2 480VFLEXDG PumpDisconnect Switch

Functionality 0.57 267 WBN0 STR360

0103, 203 3MWFLEXDiesel GENPMPStarter

Anchorage 0.54 268 WBN0 SW360 0003A/1, 3B/1 6900V3MWFLEX DieselGENFused DisconnectSwitch

Anchorage 0.5 269 WBN1 TE068 0380E ReactorLevelCap tubeTempComp

Anchorage

>0.5 270 WBN2 PNL276 L340 ReactorVessel instrumentation SystemIIPanel HCLPFassigned basedon Instruments mountedon unitstrutsubgroup fromHCLPFcalc Anchorage 0.52

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PageB24 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 271 WBN1 PNL276 L388 ReactorVessel instrumentation SystemIPanel HCLPFassigned basedon Instruments mountedon unitstrutsubgroup fromHCLPFcalc Anchorage 0.52 272 WBN2 TE068 0380E ReactorLevelCap tubeTempComp

Anchorage

>0.5 273 WBN0 LI3227 AFWSupplyTank LevelIndicator

Anchorage

>0.5 274 WBN1 LI6351 RWSTLevel

Anchorage

>0.5 275 WBN2 LI6351 RWSTLevel

Anchorage

>0.5 276 WBN1 LPF3 142 TDAFWPump Flow

Anchorage

>0.5 277 WBN2 LPF3 142 TDAFWPump Flow

Anchorage

>0.5 278 WBN1 LPF3 147B AFWFlowS/G3

Anchorage

>0.5 279 WBN2 LPF3 147B AFWFlowS/G3

Anchorage

>0.5 280 WBN1 LPF3 155A AFWFlowS/G2

Anchorage

>0.5 281 WBN2 LPF3 155A AFWFlowS/G2

Anchorage

>0.5 282 WBN1 LPF3 163B AFWFlowS/G1

Anchorage

>0.5 283 WBN2 LPF3 163B AFWFlowS/G1

Anchorage

>0.5 284 WBN1 LPF3 170A AFWFlowS/G4

Anchorage

>0.5

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PageB25 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 285 WBN2 LPF3 170A AFWFlowS/G4

Anchorage

>0.5 286 WBN1 LPL3111 S/GWRLevel Loop4

Anchorage

>0.5 287 WBN2 LPL3111 S/GWRLevel Loop4

Anchorage

>0.5 288 WBN1 LPL3148 S/GNRLevelLoop 3

Anchorage

>0.5 289 WBN2 LPL3148 S/GNRLevelLoop 3

Anchorage

>0.5 290 WBN1 LPL3156 S/GNRLevelLoop 2

Anchorage

>0.5 291 WBN2 LPL3156 S/GNRLevelLoop 2

Anchorage

>0.5 292 WBN1 LPL3164 S/GNRLevelLoop 1

Anchorage

>0.5 293 WBN2 LPL3164 S/GNRLevelLoop 1

Anchorage

>0.5 294 WBN1 LPL3171 S/GNRLevelLoop 4

Anchorage

>0.5 295 WBN2 LPL3171 S/GNRLevelLoop 4

Anchorage

>0.5 296 WBN1 LPL343 S/GWRLevel Loop1

Anchorage

>0.5 297 WBN2 LPL343 S/GWRLevel Loop1

Anchorage

>0.5 298 WBN1 LPL356 S/GWRLevel Loop1

Anchorage

>0.5 299 WBN2 LPL356 S/GWRLevel Loop2

Anchorage

>0.5 300 WBN1 LPL398 S/GWRLevel Loop3

Anchorage

>0.5 301 WBN2 LPL398 S/GWRLevel Loop3

Anchorage

>0.5 302 WBN1 LPL68 335 PZRLevel

Anchorage

>0.5 303 WBN2 LPL68 335 PZRLevel

Anchorage

>0.5

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PageB26 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 304 WBN0 LPL7842 SFPLevel

Anchorage

>0.5 305 WBN1 LPN92 131 NuclearFlux

Anchorage

>0.5 306 WBN2 LPN92 132 NuclearFlux

Anchorage

>0.5 307 WBN1 LPP1 20A S/GPressureLoop 3

Anchorage

>0.5 308 WBN2 LPP1 20A S/GPressureLoop 3

Anchorage

>0.5 309 WBN1 LPP1 27B S/GPressureLoop 4

Anchorage

>0.5 310 WBN2 LPP1 27B S/GPressureLoop 4

Anchorage

>0.5 311 WBN1 LPP12A S/GPressureLoop 1

Anchorage

>0.5 312 WBN2 LPP12A S/GPressureLoop 1

Anchorage

>0.5 313 WBN1 LPP19A S/GPressureLoop 2

Anchorage

>0.5 314 WBN2 LPP19A S/GPressureLoop 2

Anchorage

>0.5 315 WBN1 LPP68 68 RCSWRPressure

Anchorage

>0.5 316 WBN2 LPP68 66 RCSWRPressure

Anchorage

>0.5 317 WBN1 LPPD30 310 Containment Pressure

Anchorage

>0.5 318 WBN2 LPPD30 310 Containment Pressure

Anchorage

>0.5

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PageB27 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 319 WBN1 LPT30 1032 Containment Temperature

Anchorage

>0.5 320 WBN2 LPT30 1032 Containment Temperature

Anchorage

>0.5 321 WBN1 LPT681 RCSWRThotLoop 1

Anchorage

>0.5 322 WBN2 LPT681 RCSWRThotLoop 1

Anchorage

>0.5 323 WBN1 LPT68 18 RCSWRTcoldLoop 1

Anchorage

>0.5 324 WBN2 LPT68 18 RCSWRTcoldLoop 1

Anchorage

>0.5 325 WBN1 LPT68 41 RCSWRTcoldLoop 2

Anchorage

>0.5 326 WBN2 LPT68 41 RCSWRTcoldLoop 2

Anchorage

>0.5 327 WBN1 LPT68 60 RCSWRTcoldLoop 3

Anchorage

>0.5 328 WBN2 LPT68 60 RCSWRTcoldLoop 3

Anchorage

>0.5 329 WBN1 LPT68 83 RCSWRTcoldLoop 4

Anchorage

>0.5 330 WBN2 LPT68 83 RCSWRTcoldLoop 4

Anchorage

>0.5 331 WBN1 PNL276 L1000 PORVANDAFW LCVSTMGEN3&

4PNL

Anchorage 0.52 332 WBN2 PNL276 L1000 PORVANDAFW LCVSTMGEN3&

4PNL

Anchorage 0.52

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PageB28 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 333 WBN1 PNL276 L1001 PORVANDAFW LCVSTMGEN1&

2PNL

Anchorage 0.52 334 WBN2 PNL276 L1001 PORVANDAFW LCVSTMGEN1&

2PNL

Anchorage 0.52 335 WBN1 PNL094 0008AJ Incore Thermocouple MonSysJbox

Anchorage 0.52 336 WBN1 PNL094 0008BJ Incore Thermocouple MonSysJbox

Anchorage 0.52 337 WBN0 DPL360 0003A/1, 3B/1 480Volt DistributionPanel

Functionality 0.68 338 WBN0 DPL360 0003A/2, 3B/2 120/240VAC Panelboard

Functionality 0.68 339 WBN2 DPL268 0002B Hydrogen Mitigation DistributionPanel

Functionality 0.57 340 WBN1 DPL268 0001A Hydrogen Mitigation DistributionPanel

Functionality 0.57 341 WBN0 FUSD 360 DG/AP1, BP1 480VFLEXDG PumpFusible DiscSwitch

Functionality 0.57 342 WBN0 DG360

000A, 000B 480VFLEX/ESBO 225KVADiesel Generator

Functionality 0.57 343 WBN0 DG360

0003A, 3B 6900V3MW DieselGenerator

Anchorage 0.87

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PageB29 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 344 WBN1 PMP 003 0001AS TDAuxFeedwater Pump1AS

Anchorage 0.59 345 WBN2 PMP 003 0002AS TDAuxFeedwater Pump2AS

Anchorage 0.59 346 WBN0 PMP 360 DG/A1, B1 FuelOilTransfer Pump

Functionality 0.57 347 WBN1 PMP 360HP01 HPFLEXPump

Functionality 0.5 348 WBN2 PMP 360HP01 HPFLEXPump

Functionality 0.5 349 WBN1 PMP 360IP01 FLEXIPPUMP01

Functionality 0.5 350 WBN2 PMP 360IP01 FLEXIPPUMP01

Functionality 0.5 351 WBN1 PMP 360IP02 FLEXIPPUMP02

Functionality 0.5 352 WBN2 PMP 360IP02 FLEXIPPUMP02

Functionality 0.5 353 WBN1 FCV003 6386 FCVSHAREDAFW TANKOUTLET PIPETOU1 CONDENSATE

Functionality 0.83 354 WBN2 FCV003 6386 FCVFORAFW SupplyTank OutletPipingto U2Condensate

Functionality 0.83 355 WBN0 FCV070 0194B SFPHEAT EXCHANGERB CCSSUPPLY

Functionality 0.69

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PageB30 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 356 WBN0 FCV070 0197A SFPHEAT EXCHANGERA CCSSUPPLY

Functionality 0.69 357 WBN0 FCV067 0205 StaSer&CntlAir CmprSupplyHdr AIsolvalve

Functionality 0.83 358 WBN0 FCV067 0208 StaSer&CntlAir CmprSupplyHdr BIsolvalve

Functionality 0.83 359 WBN1 FCV001 051 TDAuxFeedwater PmpTrip&

ThrottleValve

Functionality 0.7 360 WBN2 FCV001 051 TDAuxFeedwater PmpTrip&

ThrottleValve

Functionality 0.7 361 WBN2 FCV003 0179AB ERCWHeaderB TDAFWPMP SUCT(PS144)

Functionality 1.14 362 WBN2 FCV003 0136AA ERCWHeaderA TDAFWPMP SUCT(PS139)

Functionality 1.14 363 WBN2 FCV003 0136BA ERCWHeaderA TDAFWPMP SUCT

Functionality 1.14 364 WBN2 FCV003 0179BB ERCWHeaderB TDAFWPMP SUCT

Functionality 1.14 365 WBN1 FCV003 0136AA ERCWHeaderA TDAFWPMP SUCT(PS139)

Functionality 1.14 366 WBN1 FCV003 0136BA ERCWHeaderA TDAFWPMP SUCT

Functionality 1.14 367 WBN1 FCV003 0179AB ERCWHeaderB TDAFWPMP SUCT(PS144)

Functionality 1.14 368 WBN1 FCV003 0179BB ERCWHeaderB TDAFWPMP SUCT

Functionality 1.14 369 WBN1 FCV067 0147A CCSHXCSUP FROMHDR1A

Functionality 0.92

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PageB31 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 370 WBN1 FCV067 0458A CCSHXCSUP FROMHDR1B

Functionality 0.92 371 WBN1 TANK3 0402A N2TANKNO.1 SUPPLYTO1LCV 0030173B

Anchorage 0.63 372 WBN1 TANK 001 0405A N2TANKNO.1 SUPTO1PCV 0010012B

Anchorage 0.63 373 WBN2 TANK 001 0405A N2TANKNO.1 SUPTO2PCV 0010012B

Anchorage 0.63 374 WBN1 TANK 001 0405B N2TANKNO.2 SUPTO1PCV 0010012B

Anchorage 0.63 375 WBN2 TANK 001 0405B N2TANKNO.2 SUPTO2PCV 0010012B

Anchorage 0.63 376 WBN1 TANK 001 0406A N2TANKNO.1 SUPTO1PCV 0010030B

Anchorage 0.63 377 WBN2 TANK 001 0406A N2TANKNO.1 SUPTO2PCV 0010030B

Anchorage 0.63 378 WBN1 TANK 001 0406B N2TANKNO.2 SUPTO1PCV 0010030B

Anchorage 0.63 379 WBN2 TANK 001 0406B N2TANKNO.2 SUPTO2PCV 0010030B

Anchorage 0.63 380 WBN1 TANK 001 0407A N2TANKNO.1 SUPTO1PCV 0010023A

Anchorage 0.63

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PageB32 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 381 WBN2 TANK 001 0407A N2TANKNO.1 SUPTO2PCV1 0023A

Anchorage 0.63 382 WBN1 TANK 001 0407B N2TANKNO.2 SUPTO1PCV 0010023A

Anchorage 0.63 383 WBN2 TANK 001 0407B N2TANKNO.2 SUPTO2PCV1 0023A

Anchorage 0.63 384 WBN1 TANK 001 0408A N2TANKNO.1 SUPTO1PCV 0010005A

Anchorage 0.63 385 WBN2 TANK 001 0408A N2TANKNO.1 SUPTO2PCV 0010005A

Anchorage 0.63 386 WBN1 TANK 001 0408B N2TANKNO.2 SUPTO1PCV 0010005A

Anchorage 0.63 387 WBN2 TANK 001 0408B N2TANKNO.1 SUPTO2PCV 0010005A

Anchorage 0.63 388 WBN2 TANK3 0402A N2TANKNO.1 SUPPLYTO2LCV 0030173B

Anchorage 0.63 389 WBN1 TANK3 0402B N2TANKNO.2 SUPPLYTO1LCV 0030173B

Anchorage 0.63 390 WBN2 TANK3 0402B N2TANKNO.2 SUPPLYTO2LCV 0030173B

Anchorage 0.63 391 WBN1 TANK3 0402C N2TANKNO.1 SUPPLYTO1LCV 0030174B

Anchorage 0.63

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PageB33 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 392 WBN2 TANK3 0402C N2TANKNO.1 SUPPLYTO2LCV 0030174B

Anchorage 0.63 393 WBN1 TANK3 0402D N2TANKNO.2 SUPPLYTO1LCV 0030174B

Anchorage 0.63 394 WBN2 TANK3 0402D N2TANKNO.2 SUPPLYTO2LCV 0030174B

Anchorage 0.63 395 WBN1 TANK3 0403A N2TANKNO.1 SUPTO1LCV 0030172A

Anchorage 0.63 396 WBN2 TANK3 0403A N2TANKNO.1 SUPTO2LCV3 172A

Anchorage 0.63 397 WBN1 TANK3 0403B N2TANKNO.2 SUPTO1LCV 003172A

Anchorage 0.63 398 WBN2 TANK3 0403B N2TANKNO.2 SUPTO2LCV3 172A

Anchorage 0.63 399 WBN1 TANK3 0403C N2TANKNO.1 SUPTO1LCV 0030175A

Anchorage 0.63 400 WBN2 TANK3 0403C N2TANKNO.1 SUPTO2LCV3 175A

Anchorage 0.63 401 WBN1 TANK3 0403D N2TANKNO.2 SUPTO1LCV 0030175A

Anchorage 0.63 402 WBN2 TANK3 0403D N2TANKNO.2 SUPTO2LCV3 175A

Anchorage 0.63 403 WBN0 TANK 0030226 AFWSupplyTank 500,000gallons

Anchorage 0.51 404 WBN0 TANK

360113, 213 6900V3MWFLEX DGFuelOil StorageTank

Anchorage 0.66

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PageB34 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 405 WBN1 CLR003 0001B TDAuxFWPMP OilCooler

Functionality 3

406 WBN2 CLR003 0001B TDAuxFWPMP OilCooler

Functionality 3

407 WBN2 RLY046 0057S TransferSwin AuxPosIsolRly

Chatter 1.55 408 WBN2 RLY046 B002/1S B21RelayAFPT Trip&Throttle VlvPhotoIso

Chatter 1.3 409 WBN2 RLY046 B002/2S B22RelayAFPT Trip&Throttle VlvPhotoIso

Chatter 1.3 410 WBN2 RLY046 B002/3S B23RelayAFPT SpeedControl InstrPwr

Chatter 1.55 411 WBN2 RLY046 BAS BA&BBRelay AFPTSpeed ControlBuffer Relay

Chatter 1.79 412 WBN2 RLY046 BA1S BA1RelayAFPT SpeedControl Buffer

Chatter 1.79 413 WBN2 RLY046 BBS BA&BBRelay AFPTSpeed ControlBuffer Relay

Chatter 1.79 414 WBN2 RLY046 R/AA AuxFWPumpVlv SepRelay

Chatter 1.4 415 WBN2 RLY046 R/BB AuxFWPumpVlv SepRelay

Chatter 1.4 416 WBN2 RLY046 R1S AFPTACCReset Relay

Chatter 1.79 417 WBN2 RLY046 R2S AFPTACCReset Relay

Chatter 1.79

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PageB35 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 418 WBN2 RLY046 R4A AFPTSUPXfer FCV115,16&

51SepRelayTRA Chatter 1.79 419 WBN2 RLY046 R5A AuxFeedPump TrbStmSupply XferSepRelayTR A

Chatter 1.62 420 WBN2 RLY046 RA1A Turb/MtrDriven AuxFWPump VlvsAuxRelay

Chatter 1.4 421 WBN2 RLY046 RA2A Turb/MtrDriven AuxFWPumpVlv SSEPRelay

Chatter 1.4 422 WBN2 RLY046 RASS AFPTPump2 FCV151MtrDr Vlv2LCV3156&

164

Chatter 1.4 423 WBN2 RLY046 RB1B Turb/MtrDriven AuxFWPump VlvsAuxRelay

Chatter 1.4 424 WBN2 RLY046 RB2B TurbDrivenAux FWPumpVlvSEP Relay

Chatter 1.4 425 WBN2 RLY046 RBSS AFPTPump2 FCV151MtrDr Vlv2LCV3171&

148

Chatter 1.4 426 WBN2 RLY046 SSTS AFPTSUPXfer FCV115,16&

51SepRelay

Chatter 1.79 427 WBN1 RLY046 0057S TransferSwin AuxPosIsolRly

Chatter 1.55 428 WBN1 RLY046 B002/1S B21RelayAFPT Trip&Throttle VlvPhotoIso

Chatter 1.3 429 WBN1 RLY046 B002/2S B22RelayAFPT Trip&Throttle VlvPhotoIso

Chatter 1.3 430 WBN1 RLY046 B002/3S B23RelayAFPT SpeedControl InstrPwr

Chatter 1.55

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PageB36 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 431 WBN1 RLY046 BAS BA&BBRelay AFPTSpeed ControlBuffer Relay

Chatter 1.79 432 WBN1 RLY046 BA1S BA1RelayAFPT SpeedControl Buffer

Chatter 1.79 433 WBN1 RLY046 BBS BA&BBRelay AFPTSpeed ControlBuffer Relay

Chatter 1.79 434 WBN1 RLY046 R/AA AuxFWPumpVlv SepRelay

Chatter 1.4 435 WBN1 RLY046 R/BB AuxFWPumpVlv SepRelay

Chatter 1.4 436 WBN1 RLY046 R1S AFPTACCReset Relay

Chatter 1.79 437 WBN1 RLY046 R2S AFPTACCReset Relay

Chatter 1.79 438 WBN1 RLY046 R4A AFPTSUPXfer FCV115,16&

51SepRelayTRA Chatter 1.79 439 WBN1 RLY046 R5A AuxFeedPump TrbStmSupply XferSepRelayTR A

Chatter 1.62 440 WBN1 RLY046 RA1A Turb/MtrDriven AuxFWPump VlvsAuxRelay

Chatter 1.4 441 WBN1 RLY046 RA2A Turb/MtrDriven AuxFWPumpVlv SSEPRelay

Chatter 1.4 442 WBN1 RLY046 RASS AFPTPump2 FCV151MtrDr Vlv2LCV3156&

164

Chatter 1.4

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PageB37 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 443 WBN1 RLY046 RB1B Turb/MtrDriven AuxFWPump VlvsAuxRelay

Chatter 1.4 444 WBN1 RLY046 RB2B TurbDrivenAux FWPumpVlvSEP Relay

Chatter 1.4 445 WBN1 RLY046 RBSS AFPTPump2 FCV151MtrDr Vlv2LCV3171&

148

Chatter 1.4 446 WBN1 RLY046 SSTS AFPTSUPXfer FCV115,16&

51SepRelay

Chatter 1.79 447 WBN1 STR046 0056AS TDAFW Trip/Throttle MotorStarter

Functionality 0.57 448 WBN2 STR046 0056AS TDAFW Trip/Throttle MotorStarter

Functionality 0.57 449 WBN1 FSV68 394 ReactorVessel HeadVent IsolationValve

Screened

>0.5 450 WBN1 FSV68 397 ReactorVessel HeadVent ThrottleValve

Screened

>0.5 451 WBN2 FSV68 395 ReactorVessel HeadVent IsolationValve

Screened

>0.5 452 WBN2 FSV68 396 ReactorVessel HeadVent ThrottleValve

Screened

>0.5