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: Difference between revisions

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{{#Wiki_filter:Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 CNL-14-212 December 30, 2014 10 CFR 50.4 10 CFR 50.54(f)
{{#Wiki_filter: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
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
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:==
==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
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:==
==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)
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.
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.
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.
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.
I declare under penalty of perjury that the foregoing is true and correct. Executed on the 30th day of December 2014.
Respectfully, Digitally signed by J. W. Shea DN: cn=J. W. Shea, o=Tennessee J. W. Shea    Valley Authority, ou=Nuclear Licensing, email=jwshea@tva.gov, c=US Date: 2014.12.30 11:50:55 -05'00' J. W. Shea Vice President, Nuclear Licensing
Respectfully, J. W. Shea Vice President, Nuclear Licensing  


==Enclosure:==
==Enclosure:==
Expedited Seismic Evaluation Process (ESEP) Report for Watts Bar Nuclear Plant cc (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
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
ENCLOSURE EXPEDITED SEISMIC EVALUATION PROCESS (ESEP) REPORT FOR WATTS BAR NUCLEAR PLANT  


Watts Bar Nuclear Plant ESEP Report EXPEDITED SEISMIC EVALUATION PROCESS (ESEP) REPORT FOR WATTS BAR NUCLEAR PLANT
WattsBarNuclearPlantESEPReport


Watts Bar Nuclear Plant ESEP Report Table of Contents Page LIST OF TABLES ............................................................................................................................................ 4 LIST OF FIGURES .......................................................................................................................................... 5 1.0   PURPOSE AND OBJECTIVE ............................................................................................................... 6 2.0   BRIEF  
EXPEDITEDSEISMICEVALUATION PROCESS(ESEP)REPORTFOR WATTSBARNUCLEARPLANT
 
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TableofContents Page LISTOFTABLES............................................................................................................................................4 LISTOFFIGURES..........................................................................................................................................5 1.0 PURPOSEANDOBJECTIVE...............................................................................................................6 2.0 BRIEF


==SUMMARY==
==SUMMARY==
OF THE FLEX SEISMIC IMPLEMENTATION STRATEGIES ...................................... 6 3.0   EQUIPMENT SELECTION PROCESS AND ESEL.................................................................................. 8 3.1     Equipment Selection Process and ESEL .............................................................................. 8 3.1.1         ESEL Development ............................................................................................... 9 3.1.2         PowerOperated Valves ....................................................................................... 9 3.1.3         Pull Boxes ........................................................................................................... 10 3.1.4         Termination Cabinets......................................................................................... 10 3.1.5         Critical Instrumentation Indicators .................................................................... 10 3.1.6         Phase 2 and 3 Piping Connections ..................................................................... 10 3.2       Justification for Use of Equipment that is not the Primary Means for FLEX Implementation ................................................................................................................ 11 4.0   GROUND MOTION RESPONSE SPECTRUM (GMRS) ...................................................................... 11 4.1     Plot of GMRS Submitted by the Licensee ......................................................................... 11 4.2     Comparison to SSE ............................................................................................................ 13 5.0   REVIEW LEVEL GROUND MOTION (RLGM) ................................................................................... 14 5.1     Description of RLGM Selected .......................................................................................... 14 5.2     Method to Estimate InStructure Response Spectra (ISRS) .............................................. 15 6.0   SEISMIC MARGIN EVALUATION APPROACH ................................................................................. 16 6.1     Summary of Methodologies Used .................................................................................... 16 6.2     HCLPF Screening Process .................................................................................................. 17 6.3     Seismic Walkdown Approach ........................................................................................... 18 6.3.1         Walkdown Approach.......................................................................................... 18 6.3.2         Application of Previous Walkdown Information ............................................... 19 6.3.3         Significant Walkdown Findings .......................................................................... 19 6.4     HCLPF Calculation Process ................................................................................................ 20 6.5     Functional Evaluations of Relays ...................................................................................... 21 6.6     Tabulated ESEL HCLPF Values (Including Key Failure Modes) .......................................... 21 7.0   INACCESSIBLE ITEMS ..................................................................................................................... 21 7.1     Identification of ESEL items inaccessible for walkdowns ................................................. 21 7.2     Planned Walkdown / Evaluation Schedule / Close Out .................................................... 22 8.0   ESEP CONCLUSIONS AND RESULTS ............................................................................................... 22 8.1     Supporting Information .................................................................................................... 22
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)


Watts Bar Nuclear Plant ESEP Report Table of Contents (continued)
Page 8.2 IdentificationofPlannedModifications...........................................................................23 8.3 ModificationImplementationSchedule...........................................................................23 8.4 SummaryofRegulatoryCommitments............................................................................24
Page 8.2   Identification of Planned Modifications ........................................................................... 23 8.3   Modification Implementation Schedule ........................................................................... 23 8.4   Summary of Regulatory Commitments ............................................................................ 24


==9.0 REFERENCES==
==9.0 REFERENCES==
.................................................................................................................................. 25
..................................................................................................................................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


Watts Bar Nuclear Plant ESEP Report List of Tables Page TABLE 41: GMRS FOR WATTS BAR NUCLEAR PLANT .............................................................................. 11 TABLE 42: SSE FOR WATTS BAR NUCLEAR PLANT .................................................................................. 13 TABLE 51: RLGM FOR WATTS BAR NUCLEAR PLANT .............................................................................. 14 TABLE A1: EXPEDITED SEISMIC EQUIPMENT LIST (ESEL) FOR SEQUOYAH NUCLEAR PLANT ................ A2 TABLE B1: ESEP HCLPF VALUES AND FAILURE MODES FOR WATTS BAR NUCLEAR PLANT .................. B2 Page 4
List of Figures Page FIGURE41:GMRSFORWATTSBARNUCLEARPLANT............................................................................12 FIGURE42:GMRSTOSSECOMPARISONFORWATTSBARNUCLEARPLANT........................................13 FIGURE51:RLGMFORWATTSBARNUCLEARPLANT............................................................................15 FIGURE52:NUREG/CR0098(0.5)VERSUSWATTSBARNUCLEARPLANTSSE......................................16


Watts Bar Nuclear Plant ESEP Report List of Figures Page FIGURE 41: GMRS FOR WATTS BAR NUCLEAR PLANT ............................................................................ 12 FIGURE 42: GMRS TO SSE COMPARISON FOR WATTS BAR NUCLEAR PLANT ........................................ 13 FIGURE 51: RLGM FOR WATTS BAR NUCLEAR PLANT ............................................................................ 15 FIGURE 52: NUREG/CR0098 (0.5) VERSUS WATTS BAR NUCLEAR PLANT SSE ...................................... 16 Page 5
WattsBarNuclearPlantESEPReport


Watts Bar Nuclear Plant ESEP Report 1.0     PURPOSE AND OBJECTIVE Following the accident at the Fukushima DaiIchi Nuclear Power Plant (NPP) resulting from the March 11, 2011, Great Tohoku Earthquake and subsequent tsunami, the Nuclear Regulatory Commission (NRC) established a NearTerm Task Force (NTTF) to conduct a systematic review of NRC processes and regulations and to determine if the agency should make additional improvements to its regulatory system. The NTTF developed a set of recommendations intended to clarify and strengthen the regulatory framework for protection against natural phenomena. Subsequently, the NRC issued a 50.54(f) letter on March 12, 2012 [1], requesting information to assure that these recommendations are addressed by all United States of America (U.S.) NPPs. The 50.54(f) letter requests that licensees and holders of construction permits under 10 CFR Part 50 reevaluate the seismic hazards at their sites against presentday United States NRC requirements and guidance. Depending on the comparison between the reevaluated seismic hazard and the current design basis, further risk assessment may be required. Risk assessment approaches acceptable to the staff include a Seismic Probabilistic Risk Assessment (SPRA), or a Seismic Margin assessment (SMA). Based upon the risk assessment results, the NRC staff will determine whether additional regulatory actions are necessary.
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.
This Report describes the Expedited Seismic Evaluation Process (ESEP) undertaken for the Watts Bar NPP, Unit 1 and Unit 2 (WBNP). The intent of the ESEP is to perform an interim action in response to the NRCs 50.54(f) letter [1] to demonstrate Seismic Margin through a review of a subset of the plant equipment that can be relied upon to protect the Reactor Core following beyond design basis seismic events.
ThisReportdescribestheExpeditedSeismicEvaluationProcess(ESEP)undertakenfortheWattsBar NPP,Unit1andUnit2(WBNP).TheintentoftheESEPistoperformaninterimactioninresponseto theNRCs50.54(f)letter[1]todemonstrateSeismicMarginthroughareviewofasubsetoftheplant equipmentthatcanbereliedupontoprotecttheReactorCorefollowingbeyonddesignbasisseismic events.
The ESEP is implemented using the methodologies in the NRC endorsed guidance in Electric Power Research Institute (EPRI) 3002000704, Seismic Evaluation Guidance: Augmented Approach for the Resolution of Fukushima NTTF Recommendation 2.1: Seismic [2].
TheESEPisimplementedusingthemethodologiesintheNRCendorsedguidanceinElectricPower ResearchInstitute(EPRI)3002000704,SeismicEvaluationGuidance:AugmentedApproachforthe ResolutionofFukushimaNTTFRecommendation2.1:Seismic[2].
The objective of this Report is to provide summary information describing the ESEP evaluations and results. The level of detail provided in the Report is intended to enable NRC to understand the inputs used, the evaluations performed, and the decisions made as a result of the interim evaluations.
TheobjectiveofthisReportistoprovidesummaryinformationdescribingtheESEPevaluationsand results.ThelevelofdetailprovidedintheReportisintendedtoenableNRCtounderstandtheinputs used,theevaluationsperformed,andthedecisionsmadeasaresultoftheinterimevaluations.
2.0     BRIEF  
2.0 BRIEF


==SUMMARY==
==SUMMARY==
OF THE FLEX SEISMIC IMPLEMENTATION STRATEGIES The Watts Bar Nuclear Plant FLEX response strategies for Reactor Core Cooling and Heat Removal, Reactor Inventory Control/Longterm Subcriticality, and Containment Function are summarized below.
OFTHEFLEXSEISMICIMPLEMENTATIONSTRATEGIES TheWattsBarNuclearPlantFLEXresponsestrategiesforReactorCoreCoolingandHeatRemoval, ReactorInventoryControl/LongtermSubcriticality,andContainmentFunctionaresummarizedbelow.
This summary is derived from the WBNP Overall Integrated Plan (OIP) in Response to the March 12, 2012, Commission Order EA12049 [3].
ThissummaryisderivedfromtheWBNPOverallIntegratedPlan(OIP)inResponsetotheMarch12, 2012,CommissionOrderEA12049[3].
For At Power Conditions Core Cooling and Heat Removal Reactor core cooling and heat removal is achieved via steam release from the Steam Generators (SGs) with SG makeup from the Turbine Driven Auxiliary Feedwater Pump (TDAFWP) during FLEX Phase 1 with suction from the Auxiliary Feedwater Storage Tank. Local control and operation of the SG Atmospheric Relief Valves (ARVs) and the TDAFWP system is available and proceduralized so that operation from the main control room is not required.
ForAtPowerConditions CoreCoolingandHeatRemoval ReactorcorecoolingandheatremovalisachievedviasteamreleasefromtheSteamGenerators(SGs) withSGmakeupfromtheTurbineDrivenAuxiliaryFeedwaterPump(TDAFWP)duringFLEXPhase1 withsuctionfromtheAuxiliaryFeedwaterStorageTank.LocalcontrolandoperationoftheSG AtmosphericReliefValves(ARVs)andtheTDAFWPsystemisavailableandproceduralizedsothat operationfromthemaincontrolroomisnotrequired.
To provide an unlimited supply of water for core cooling during Phase 2, portable LP FLEX Pumps will be staged at the Intake Pump Station (IPS) and take suction from the intake channel and discharge to Page 6
ToprovideanunlimitedsupplyofwaterforcorecoolingduringPhase2,portableLPFLEXPumpswill bestagedattheIntakePumpStation(IPS)andtakesuctionfromtheintakechannelanddischargeto
 
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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.
 
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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.
 
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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.
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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)
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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


Watts Bar Nuclear Plant ESEP Report four emergency raw cooling water (ERCW) FLEX connections inside the IPS. They will be used to pressurize the ERCW headers which can then be used for direct supply to the TDAFWP suction.
WattsBarNuclearPlantESEPReport
When the TDAFWP becomes unavailable due to reduction in available steam pressure, a permanently installed IP FLEX pump will be used to continue to supply feedwater to the SGs. Suction would be from an ERCW FLEX connection on AB elevation (EL) 737 feet (ft). The discharge is routed by hose to the TDAFWP discharge FLEX connections on EL 729 ft in the South MSVV.
For Phase 3, WBNP will continue the Phase 2 coping strategies.
Reactor Inventory control For Phase 1, Reactor Coolant System (RCS) makeup will be provided by the cold leg accumulators. RCS depressurization and cool down will be initiated as soon as possible to reduce the Reactor Coolant Pump (RCP) seal leakage rate.
In Phase 2, RCS makeup will be provided by repowering existing Safety Injection (SI) pumps and using the pumps to inject borated water as needed into the RCS. The SI pumps will be repowered with a 3 MWe FLEX Diesel Generator. The SI pumps can be manually controlled with hand switches on Main Control Room Panel M6. The source of RCS makeup will be the Refueling Water Storage Tank (RWST).
Component Cooling System (CCS) pumps will be repowered using the 3 MWe FLEX diesel generators to provide cooling water to the SI pump oil cooler.
Later in Phase 2, when the RCS is depressurized sufficiently, a permanently installed HP FLEX pump will be used to inject borated water into the RCS through SI piping. These pumps would be aligned with a suction hose from RWST FLEX connections located on AB EL 692 ft and a discharge hose routed to a SIP discharge FLEX header connection on AB EL 692 ft. The HP FLEX Pumps are fed from and operated from the 480v C&A Vent Boards 1A22 and 2B22.
For Phase 3, WBNP will continue the Phase 2 coping strategies.
Containment Function There are no Phase 1 FLEX actions to maintain containment integrity. The primary Phase 2 FLEX strategy for containment integrity entails repowering one train of hydrogen igniters. For Phase 2, a Containment Air Return Fan inside of containment can be repowered.
For Phase 3, WBNP will continue the Phase 2 coping strategies.
Support Systems Key reactor parameters to be monitored during FLEX implementation are measured and indicated by instrumentation that is powered by the 125V DC vital battery. During Phase 1, the vital batteries provide power to needed instrumentation through the vital battery boards, vital inverters and vital instrument power boards.
During Phase 2, power to vital instrumentation will be maintained by supplying 480V AC power to the vital battery chargers through new, fused, FLEX distribution panels, which will be connected directly to the battery chargers. 480V AC power will be supplied to the distribution panels by prestaged, 480V AC FLEX diesel generators located on the roof of the Auxiliary Building.
During the early portions of Phase 2, the 6.9kV switchgear and 6.9kV Shutdown Boards will be energized with a prestaged 3 MWe FLEX diesel generator located in the FLEX building. This will allow reenergizing the SI pumps for inventory control.
Page 7


Watts Bar Nuclear Plant ESEP Report For Phase 3, WBNP will continue the Phase 2 coping strategies.
Page16
For Shutdown Conditions Reactor core cooling and heat removal with SGs not available is provided during Phase 1 by heating up and boiling of the RCS coolant inventory.
RCS inventory during Phase 1 may be maintained by gravity feed from the RWST at each unit. The ability of the RWST at each unit to provide a gravity feed to the RCS is limited by the RWST fluid height, line losses through the gravity feed path, and pressure within the RCS.
If it is determined that gravity feed is not effective to cool the RCS and prevent fuel damage, Watts Bar has taken actions to proceduralize administrative controls to prestage FLEX equipment prior to entering a condition where the SGs cannot provide adequate core cooling.
With SGs unavailable the transition to Phase 2 strategies will be required as inventory is lost from the RCS. Prior to loss of gravity feed from the RWST, the permanently installed 480v motor driven Mode 5
& 6 IP FLEX pump must be aligned to take suction from the RWST and deliver the coolant to the RCS via the Safety Injection System FLEX connections. Power supply and control are from the 480v C&A Vent Boards. Sufficient flushing flow will be needed to prevent boron precipitation.
Reactor core cooling with SGs not available is adequately maintained via the Phase 2 strategy.
For Phase 3, WBNP will continue the Phase 2 coping strategies.
WBNP will follow the guidance contained within the Nuclear Energy Institute (NEI) position paper dated September 18, 2013, entitled Position Paper: Shutdown/Refueling Modes (ADAMS No.
ML13273A514) [23].
3.0      EQUIPMENT SELECTION PROCESS AND ESEL The selection of equipment for the Expedited Seismic Equipment List (ESEL) followed the guidelines of EPRI 3002000704 [2]. The ESEL for Unit 1 and Unit 2 in presented in Attachments A. Information presented in Attachment A is drawn from [25].
3.1      Equipment Selection Process and ESEL The selection of equipment to be included on the ESEL was based on installed plant equipment credited in the FLEX strategies during Phase 1, 2, and 3 mitigation of a Beyond Design Basis External Event (BDBEE), as outlined in the WBNP OIP in Response to the March 12, 2012, Commission Order EA 12049 [3]. The OIP provides the WBNP FLEX mitigation strategy and serves as the basis for equipment selected for the ESEP.
The scope of installed plant equipment includes equipment relied upon for the FLEX strategies to sustain the critical functions of core cooling and containment integrity consistent with the Watts Bar OIP [3]. FLEX mitigation recovery actions are excluded from the ESEP scope per EPRI 3002000704 [2].
The overall list of planned FLEX modifications and the scope for consideration herein is limited to those required to support core cooling, reactor coolant inventory and subcriticality, and containment integrity functions. Portable and prestaged FLEX equipment (not permanently installed) are excluded from the ESEL per EPRI 3002000704.
The ESEL component selection follows the EPRI guidance outlined in Section 3.2 of EPRI 3002000704.
Page 8


Watts Bar Nuclear Plant ESEP Report
Figure52:NUREG/CR0098(0.5g)versusWattsBarNuclearPlantSSE 6.0 SEISMICMARGINEVALUATIONAPPROACH ItisnecessarytodemonstratethatESELitemshavesufficientseismiccapacitytomeetorexceedthe demandcharacterizedbytheRLGM.TheseismiccapacityischaracterizedasthePGAforwhichthere isaHCLPF.ThePGAisassociatedwithaspecificspectralshape,inthiscasethe5%dampedRLGM spectralshape.TheHCLPFcapacitymustbeequaltoorgreaterthantheRLGMPGA.Thecriteriafor seismiccapacitydeterminationaregiveninSection5ofEPRI3002000704[2].
: 1. The scope of components is limited to that required to accomplish the core cooling and containment safety functions identified in Table 32 of EPRI 3002000704 [2]. The instrumentation monitoring requirements for core cooling/containment safety functions are limited to those outlined in the EPRI 3002000704 guidance, and are a subset of those outlined in the Watts Bar OIP [3].
TherearetwobasicapproachesfordevelopingHCLPFcapacities:
: 2. The scope of components is limited to installed plant equipment and FLEX connections necessary to implement the Watts Bar, as described in Section 2.
: 1.
: 3. The scope of components assumes the credited FLEX connection modifications are implemented, and are limited to those required to support a single FLEX success path (i.e.,
Deterministicapproachusingtheconservativedeterministicfailuremargin(CDFM) methodologyofEPRINP6041SL,AMethodologyforAssessmentofNuclearPower PlantSeismicMargin(Revision1)[8].
either Primary or Backup/Alternate).
: 2.
: 4. The Primary FLEX success path is to be specified. Selection of the Backup/Alternate FLEX success path must be justified.
ProbabilisticapproachusingthefragilityanalysismethodologyofEPRITR103959, MethodologyforDevelopingSeismicFragilities[10].
: 5. Phase 3 coping strategies are included in the ESEP scope, whereas recovery strategies are excluded.
6.1 SummaryofMethodologiesUsed WBNPperformedaSMAforUnit1in1998[11]andcompletedanIPEEEFinalReportforUnit2in2014
: 6. Structures, systems, and components excluded per the EPRI 3002000704 guidance are:
[21].TheSMAconsistedofscreeningwalkdowns,functionalevaluation,andHCLPFanchorage calculations.ThescreeningwalkdownsusedthescreeningtablesfromChapter2ofEPRINP6041[8].
Structures (e.g. containment, reactor building, control building, auxiliary building, etc.).
ThewalkdownswereconductedbyengineerstrainedinEPRINP6041(theengineersattendedtheEPRI SMAAddOncourseinadditiontotheSeismicQualificationUtilityGroup(SQUG)WalkdownScreening andSeismicEvaluationTrainingCourse),andweredocumentedonScreeningEvaluationWorkSheets fromEPRINP6041.AnchoragecapacitycalculationsusedtheCDFMcriteriafromEPRINP6041.
Piping, cabling, conduit, HVAC, and their supports.
SeismicdemandwastheIPEEEReviewLevelEarthquake(RLE)forSMA(medianNUREG/CR0098[6]
Manual valves and rupture disks.
groundresponsespectrumforrockanchoredto0.3gPGA).
Poweroperated valves not required to change state as part of the FLEX mitigation strategies.
0.00E+00 2.00E01 4.00E01 6.00E01 8.00E01 1.00E+00 1.20E+00 0.1 1
Nuclear steam supply system components (e.g. RPV and internals, reactor coolant pumps and seals, etc.).
10 100 Acceleration(g)
: 7. For cases in which neither train was specified as a primary or backup strategy, then only one train component (generally A train) is included in the ESEL.
Frequency(Hz)
3.1.1 ESEL Development The ESEL was developed by reviewing the WBNP OIP [3] to determine the major equipment involved in the FLEX strategies. Further reviews of plant drawings (e.g., Process and Instrumentation Diagrams (P&IDs) and Electrical OneLine Diagrams) were performed to identify the boundaries of the flow paths to be used in the FLEX strategies and to identify specific components in the flow paths needed to support implementation of the FLEX strategies.
RLENUREG/CR0098 (0.5g)
Boundaries were established at an electrical or mechanical isolation device (e.g., isolation amplifier, valve, etc.) in branch circuits/branch lines off the defined strategy electrical or fluid flowpath. P&IDs were the primary reference documents used to identify mechanical components and instrumentation.
RLGM=2xSSE WBNSSE(0.18g)
The flow paths used for FLEX strategies were selected and specific components were identified using detailed equipment and instrument drawings, piping isometrics, electrical schematics and oneline drawings, system descriptions, design basis documents, etc., as necessary.
3.1.2 PowerOperated Valves Page 33 of EPRI 3002000704 [2] notes that power operated valves not required to change state as part of the FLEX mitigation strategies are excluded from the ESEL. Page 32 also notes that functional Page 9


Watts Bar Nuclear Plant ESEP Report failure modes of electrical and mechanical portions of the installed Phase 1 equipment should be considered (e.g. Auxiliary Feedwater (AFW) trips). To address this concern, the following guidance is applied in the Watts Bar ESEL for functional failure modes associated with power operated valves:
WattsBarNuclearPlantESEPReport
Power operated valves that remain energized during the ELAP events (such as DC powered valves), were included on the ESEL.
Power operated valves not required to change state as part of the FLEX mitigation strategies were not included on the ESEL. The seismic event also causes the ELAP event; therefore, the valves are incapable of spurious operation as they would be deenergized.
Power operated valves not required to change state as part of the FLEX mitigation strategies during Phase 1, and are reenergized and operated during subsequent Phase 2 and 3 strategies, were not evaluated for spurious valve operation as the seismic event that caused the ELAP has passed before the valves are repowered.
3.1.3 Pull Boxes Pull boxes were deemed unnecessary to add to the ESELs as these components provide completely passive locations for pulling or installing cables. No breaks or connections in the cabling are included in pull boxes. Pull boxes were considered part of conduit and cabling, which are excluded in accordance with EPRI 3002000704 [2].
3.1.4 Termination Cabinets Termination cabinets, including cabinets necessary for FLEX Phase 2 and 3 connections, provide consolidated locations for permanently connecting multiple cables. The termination cabinets and the internal connections provide a completely passive function; however, the cabinets are included in the ESEL to ensure industry knowledge on panel/anchorage failure vulnerabilities is addressed.
3.1.5 Critical Instrumentation Indicators Critical indicators and recorders are typically physically located on panels/cabinets and are included as separate components; however, seismic evaluation of the instrument indication may be included in the panel/cabinet seismic evaluation (ruleofthebox).
3.1.6 Phase 2 and 3 Piping Connections Item 2 in Section 3.1 above notes that the scope of equipment in the ESEL includes .FLEX connections necessary to implement the WBNP OIP [3] as described in section 2. Item 3 in Section 3.1 also notes that The scope of components assumes the credited FLEX connection modifications are implemented, and are limited to those required to support a single FLEX success path (i.e., either Primary or Backup/Alternate). Item 6 in Section 3.1 above goes on to explain that Piping, cabling, HVAC, and their supports are excluded from the ESEL scope in accordance with EPRI 3002000704 [2].
Therefore, piping and pipe supports associated with FLEX Phase 2 and Phase 3 connections are excluded from the scope of the ESEP evaluation. However, any active valves in FLEX Phase 2 and Phase 3 connection flow path are included in the ESEL.
Page 10


Watts Bar Nuclear Plant ESEP Report 3.2    Justification for Use of Equipment that is not the Primary Means for FLEX Implementation The WBNP ESEL is based on the primary means of implementing the FLEX strategy. Therefore, no additional justification is required.
Page17 AftersubmittaloftheIPEEEReportstotheNRCandconsideringinsightsintotheseismicruggednessof WBNequipmentobtainedfromtheIPEEEreports,WBNperformedupdatedHCLPFcapacity evaluations.TheupdatedHCLPFcapacityevaluationsfocusedonremovingexcessconservatismand determiningHCLPFcapacityinamoreaccuratemanner.TheupdatedHCLPFevaluationsdocumenta minimumHCLPFof0.5gforcomponentsontheIPEEESSEL[12].
4.0     GROUND MOTION RESPONSE SPECTRUM (GMRS) 4.1    Plot of GMRS Submitted by the Licensee The Safe Shutdown Earthquake (SSE) control point is defined at the reactor building (RB) foundation level at elevation 684 ft and is the deepest structure foundation control point. Table 41 shows the GMRS accelerations for a range of frequencies. The GMRS at the control point elevation is shown in Figure 41 [4].
ConsideringinsightsfromtheupdatedHCLPFevaluations,aminimumHCLPFof0.5gwasselectedas theRLEfortheSMAintheESEP.Figure52showsthemedianNUREG/CR0098(0.5g)ground responsespectrumselectedastheRLEfortheSMAintheESEP,comparedtotherequiredESEPRLGM responsespectrum.ThefigureshowsthattheselectedESEPRLEenvelopstherequiredESEPRLGMat allfrequencies.
Table 41 GMRS for Watts Bar Nuclear Plant 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 Page 11
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


Watts Bar Nuclear Plant ESEP Report Table 41 GMRS for Watts Bar Nuclear Plant (Continued)
WattsBarNuclearPlantESEPReport
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 GMRS at Control point for Watts Bar Nuclear Plant, 5%
Damping 8.00E01 7.00E01 6.00E01 Acceleration (g) 5.00E01 4.00E01 3.00E01 2.00E01 1.00E01 0.00E+00 0.1                1                    10                100 Frequency (Hz)
Figure 41: GMRS for Watts Bar Nuclear Plant Page 12


Watts Bar Nuclear Plant ESEP Report 4.2    Comparison to SSE The SSE was developed in accordance with 10 CFR Part 100 Appendix A through an evaluation of the maximum earthquake potential for the region surrounding the site. The SSE horizontal spectrum at the WBNP site derives from the maximum historic earthquake reported in the site province (the 1897 Giles County event) placed adjacent to the Site. The SSE response spectrum is characterized by a peak ground acceleration (PGA) of 0.18 acceleration of gravity (g) and a shape that conforms to a modified Newmark spectrum [6], which is similar to the Regulatory Guide (RG) 1.60 spectral shape. Figure 42 compares the GMRS to the SSE and illustrates that the GMRS exceeds the SSE in the frequency range above 4.5 Hertz (Hz). The maximum ratio of GMRS to SSE between 1 Hz and 10 Hz occurs at a frequency of 10 Hz and that ratio is approximately 2.0.
Page18 havebeenscreenedbytheupdatedIPEEEevaluation[12]asdiscussedabove,andallprobesorsensors willbeboxed/mountedwiththeirrespectivecomponent.
Table 42: SSE for Watts Bar Nuclear Plant 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 GMRS to SEE Comparison for Watts Bar Nuclear Plant, 5%
6.3 SeismicWalkdownApproach 6.3.1 WalkdownApproach WalkdownswereperformedinaccordancewiththecriteriaprovidedinSection5ofEPRI3002000704
Damping 9.00E01 8.00E01 7.00E01 Acceleration (g) 6.00E01 5.00E01 4.00E01                                                              Watts Bar GMRS 3.00E01                                                              WBN SSE (0.18g) 2.00E01 1.00E01 0.00E+00 0.1            1                    10      100 Frequency (Hz)
[2],whichreferstoEPRINP6041[8]fortheSMAprocess.Pages226through230ofEPRINP6041
Figure 42: GMRS to SSE Comparison for Watts Bar Nuclear Plant Page 13
[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.


Watts Bar Nuclear Plant ESEP Report 5.0    REVIEW LEVEL GROUND MOTION (RLGM) 5.1    Description of RLGM Selected Section 4 of EPRI 3002000704 [2] presents two approaches for developing the RLGM to be used in the ESEP:
WattsBarNuclearPlantESEPReport
: 1. The RLGM may be derived by linearly scaling the SSE by the maximum ratio of the GMRS/SSE between the 1 and 10 Hz range (not to exceed 2x SSE). Instructure RLGM seismic motions would be derived using existing SSE based instructure response spectra (ISRS) with the same scale factor.
: 2. Alternately, licensees who have developed appropriate structural/soilstructure interaction (SSI) models capable of calculating ISRS based on site GMRS/uniform hazard response spectrum (UHRS) input may opt to use these ISRS in lieu of scaled SSE ISRS.
Based on a review of tabulated data in Table 41 and the SSE values in Table 42, in the range between 1 and 10 Hz the maximum ratio of GMRS to the SSE is calculated to be:
SFmax = SAGMRS(10 HZ)/SA SSE 10Hz) = 0.726g/0.36g = 2.02 Since the computed scale factor is greater than 2.0, the RLGM would be set a level of 2x SSE. This is shown in Table 51 and Figure 51.
Table 51 RLGM for Watts Bar Nuclear Plant 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 Page 14


Watts Bar Nuclear Plant ESEP Report RLGM for Watts Bar Nuclear Plant 1.00E+00 9.00E01 8.00E01 7.00E01 Acceleration (g) 6.00E01 5.00E01 Watts Bar GMRS 4.00E01 RLGM= 2x SSE 3.00E01 2.00E01 1.00E01 0.00E+00 0.1            1                    10    100 Frequency (Hz)
Page19 AttachmentAwasconsolidatedfromthe452componentsintoawalkdownlistcontaining210 components.Consolidatedfromthislistarecomponentsinthepreviouslycreditedwalkdownsand componentsthataremountedonorboxedintoothercomponents.Thedetailsofthesewalkdown aresummarizedinESEPWalkdownPackage[19].
Figure 51: RLGM for Watts Bar Nuclear Plant 5.2    Method to Estimate InStructure Response Spectra (ISRS)
6.3.2 ApplicationofPreviousWalkdownInformation PreviousseismicwalkdownswereusedtosupporttheESEPseismicevaluations.Someofthe componentsontheESELwereincludedintheNTTF2.3seismicwalkdowns[18].Thosewalkdowns wererecentenoughthattheydidnotneedtoberepeatedfortheESEP.
EPRI SMA Methodology recommends that median centered response should be used in HCLPF calculations. The ISRS used in the updated IPEEE [12] are based on the NUREG0098 median shape for rock with a PGA of 0.5g. As shown on Figure 52 this shape is similar to the SSE spectrum. This figure also illustrates that the updated IPEEE [12] RLE spectrum with a PGA of 0.5g envelops the RLGM over the entire range of frequencies. Therefore, the median centered ISRS developed in the updated IPEEE
SeveralESELitemswerepreviouslywalkeddownduringtheWBNPUnit1and2SeismicIPEEEprogram.
[12] represent the seismic demand on which the HCLPF values reported here are based.
Additionally,previouswalkdownsperformedaspartoftheUnit1andUnit2IntegratedInteraction Program(IIP)andEquipmentSeismicQualification(ESQ)ProgramsasreferencedintheWBNUnit1 andUnit2IPEEEreportsarealsocredited.Thosewalkdownresultswerereviewedandthefollowing stepsweretakentoconfirmthatthepreviouswalkdownconclusionsremainedvalid.
Page 15
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.


Watts Bar Nuclear Plant ESEP Report 1.20E+00 1.00E+00 8.00E01 Acceleration (g)
WattsBarNuclearPlantESEPReport
RLE  NUREG/CR0098 (0.5g) 6.00E01 RLGM= 2x SSE 4.00E01 WBN SSE (0.18g) 2.00E01 0.00E+00 0.1        1            10          100 Frequency (Hz)
Figure 52: NUREG/CR0098 (0.5g) versus Watts Bar Nuclear Plant SSE 6.0    SEISMIC MARGIN EVALUATION APPROACH It is necessary to demonstrate that ESEL items have sufficient seismic capacity to meet or exceed the demand characterized by the RLGM. The seismic capacity is characterized as the PGA for which there is a HCLPF. The PGA is associated with a specific spectral shape, in this case the 5%damped RLGM spectral shape. The HCLPF capacity must be equal to or greater than the RLGM PGA. The criteria for seismic capacity determination are given in Section 5 of EPRI 3002000704 [2].
There are two basic approaches for developing HCLPF capacities:
: 1.                      Deterministic approach using the conservative deterministic failure margin (CDFM) methodology of EPRI NP6041SL, A Methodology for Assessment of Nuclear Power Plant Seismic Margin (Revision 1) [8] .
: 2.                      Probabilistic approach using the fragility analysis methodology of EPRI TR103959, Methodology for Developing Seismic Fragilities [10] .
6.1    Summary of Methodologies Used WBNP performed a SMA for Unit 1 in 1998 [11] and completed an IPEEE Final Report for Unit 2 in 2014
[21]. The SMA consisted of screening walkdowns, functional evaluation, and HCLPF anchorage calculations. The screening walkdowns used the screening tables from Chapter 2 of EPRI NP6041 [8].
The walkdowns were conducted by engineers trained in EPRI NP 6041 (the engineers attended the EPRI SMA AddOn course in addition to the Seismic Qualification Utility Group (SQUG) Walkdown Screening and Seismic Evaluation Training Course), and were documented on Screening Evaluation Work Sheets from EPRI NP6041. Anchorage capacity calculations used the CDFM criteria from EPRI NP6041.
Seismic demand was the IPEEE Review Level Earthquake (RLE) for SMA (median NUREG/CR0098 [6]
ground response spectrum for rock anchored to 0.3g PGA).
Page 16


Watts Bar Nuclear Plant ESEP Report After submittal of the IPEEE Reports to the NRC and considering insights into the seismic ruggedness of WBN equipment obtained from the IPEEE reports, WBN performed updated HCLPF capacity evaluations. The updated HCLPF capacity evaluations focused on removing excess conservatism and determining HCLPF capacity in a more accurate manner. The updated HCLPF evaluations document a minimum HCLPF of 0.5g for components on the IPEEE SSEL [12].
Page20 WBN2MCC213A1-MotorControlCenter(MCC)hasinteractionissuewithanoverhead cabletraysupport.ThisMCCwasreviewedundertheIPEEEevaluationfortheplantandall potentialinteractionswereresolvedforRLGM[21].
Considering insights from the updated HCLPF evaluations, a minimum HCLPF of 0.5 g was selected as the RLE for the SMA in the ESEP. Figure 52 shows the median NUREG/CR0098 (0.5g) ground response spectrum selected as the RLE for the SMA in the ESEP, compared to the required ESEP RLGM response spectrum. The figure shows that the selected ESEP RLE envelops the required ESEP RLGM at all frequencies.
WBN1PNL276L1000-Twoanchorboltsprojectfromtheflooraboutaninchhigherthanthe typicalinstallation.Embedmentadequacyfortheseboltsisaddressedandithasbeenverified thattheminimumembedmentfortheanchorshasbeenmet.
6.2    HCLPF Screening Process The screening capacity in EPRI NP6041 [8] Table 24 based on ground peak spectral accelerations of 1.2g exceeds the RLGM peak spectral acceleration. The anchorage capacity calculations were based on floor response spectra generated for the RLE. Therefore, equipment for which the screening caveats were met and for which the anchorage capacity exceeds the RLE seismic demand associated with the PGA of 0.5g can be screened out from ESEP seismic capacity determination because the HCLPF capacity exceeds the RLGM.
ThefindingsandotherinformationdevelopedfromtheESEPwalkdownaresummarizedinESEP WalkdownPackage[19].Basedonwalkdownresults,HCLPFcapacityevaluationswererecommended forthefollowingtwelve(12)components.
The combined Unit 1 and Unit 2 ESEL includes 452 items. Of these, 87 are valves, both poweroperated and relief. In accordance with Table 24 of EPRI NP6041 [8], active valves may be assigned a functional capacity of 1.2g peak spectral acceleration, and anchorage is not a failure mode if evaluation recommended for motoroperated valves in piping lines of 2 inches diameter or less is performed.
MotorControlCentersandSwitchgear Transformers ControlandInstrumentationPanels InstrumentRacks DistributionPanels EngineGenerators HorizontalPumps AirOperatedValves MotorOperatedValves VerticalTanksandHeatExchangers HorizontalTanksandHeatExchangers Relays 6.4 HCLPFCalculationProcess ESELitemsnotincludedinthepreviousupdatedIPEEEevaluationsatWBNPwereevaluatedusingthe criteriainEPRINP6041[8].Thoseevaluationsincludedthefollowingsteps:
Therefore, valves on the ESEL may be screened out from ESEP seismic capacity determination, subject to the caveat regarding large extended operators on small diameter piping. Poweroperated valves were addressed in the WBNP Unit 1 and 2 IPEEE SMA. In the SMA, the valves were found to meet EPRI NP6041 Figures F25 and F26 (thus meeting the 1.2g peak spectral acceleration screening criteria) or to exceed the RLE floor response spectra on the basis of vendor seismic qualification reports.
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.
The IPEEE SMA reviews covered 449 valves in Unit 1, and 27 valves described as Unit 0. This review focused on motoroperated valves on small diameter piping and valves at high elevations in the plant.
Relief valves were not included in the IPEEE review except for the poweroperated relief valves, which met the criteria. Springoperated relief valves are considered to meet the EPRI NP6041 1.2g peak spectral acceleration screening criteria without explicit review. On the basis of the above, the ESEL valves may be screened out from ESEP seismic capacity determination.
The nonvalve components in the ESEL are generally screened based on the SMA results. If the SMA showed that the component met the EPRI NP6041 screening caveats and the CDFM capacity exceeded the RLE demand, the component can be screened out from the ESEP capacity determination.
Individual instrumentation items are generically associated with instrument racks and instrument panels. These will be assigned HCLPF values based on similar assemblies evaluated in the IPEEE.
The ESEL includes an instrument loop for parameters monitored during the FLEX implementation. A typical loop consists of a probe or sensor, an indicator and/or transmitter on a local rack, a cabinet in the Auxiliary Instrument Room, an indicator in the Main Control Room, and an indicator in the Aux Control Room. Panels in the Main Control Room, Aux Control Room, and the Aux Instrument Room Page 17


Watts Bar Nuclear Plant ESEP Report have been screened by the updated IPEEE evaluation [12] as discussed above, and all probes or sensors will be boxed/mounted with their respective component.
WattsBarNuclearPlantESEPReport
6.3    Seismic Walkdown Approach 6.3.1 Walkdown Approach Walkdowns were performed in accordance with the criteria provided in Section 5 of EPRI 3002000704
[2], which refers to EPRI NP6041 [8] for the SMA process. Pages 226 through 230 of EPRI NP6041
[8] describe the seismic walkdown criteria, including the following key criteria.
The SRT [Seismic Review Team] should walk by 100% of all components which are reasonably accessible and in nonradioactive or low radioactive environments. Seismic capability assessment of components which are inaccessible, in highradioactive environments, or possibly within contaminated containment, will have to rely more on alternate means such as photographic inspection, more reliance on seismic reanalysis, and possibly, smaller inspection teams and more hurried inspections. A 100%
walk by does not mean complete inspection of each component, nor does it mean requiring an electrician or other technician to deenergize and open cabinets or panels for detailed inspection of all components. This walkdown is not intended to be a QA or QC review or a review of the adequacy of the component at the SSE level.
If the SRT has a reasonable basis for assuming that the group of components are similar and are similarly anchored, then it is only necessary to inspect one component out of this group. The similaritybasis should be developed before the walkdown during the seismic capability preparatory work (Step 3) by reference to drawings, calculations, or specifications. The one component or each type which is selected should be thoroughly inspected which probably does mean deenergizing and opening cabinets or panels for this very limited sample. Generally, a spare representative component can be found so as to enable the inspection to be performed while the plant is in operation. At least for the one component of each type which is selected, anchorage should be thoroughly inspected.
The walkdown procedure should be performed in an ad hoc manner. For each class of components the SRT should look closely at the first items and compare the field configurations with the construction drawings and/or specifications. If a onetoone correspondence is found, then subsequent items do not have to be inspected in as great a detail. Ultimately the walkdown becomes a walk by of the component class as the SRT becomes confident that the construction pattern is typical. This procedure for inspection should be repeated for each component class; although, during the actual walkdown the SRT may be inspecting several classes of components in parallel. If serious exceptions to the drawings or questionable construction practices are found then the system or component class must be inspected in closer detail until the systematic deficiency is defined.
The 100% walk by is to look for outliers, lack of similarity, anchorage which is different from that shown on drawings or prescribed in criteria for that component, potential SI [Seismic Interaction]
problems, situations that are at odds with the team members past experience, and any other areas of serious seismic concern. If any such concerns surface, then the limited sample size of one component of each type for thorough inspection will have to be increased. The increase in sample size which should be inspected will depend upon the number of outliers and different anchorages, etc., which are observed. It is up to the SRT to ultimately select the sample size since they are the ones who are responsible for the seismic adequacy of all elements which they screen from the margin review.
Appendix D gives guidance for sampling selection.
Page 18


Watts Bar Nuclear Plant ESEP Report Attachment A was consolidated from the 452 components into a walkdown list containing 210 components. Consolidated from this list are components in the previously credited walkdowns and components that are mounted on or boxed into other components. The details of these walkdown are summarized in ESEP Walkdown Package [19].
Page21 6.5 FunctionalEvaluationsofRelays ESEPconsiderscabinetsandequipmentcontrolscontainingrelays,contactors,switches,circuit breakersandotherelectricalandinstrumentationcomponentsthatcouldbeaffectedbyhigh frequencyearthquakemotionsandthatimpactoperationofequipmentintheESEL.
6.3.2 Application of Previous Walkdown Information Previous seismic walkdowns were used to support the ESEP seismic evaluations. Some of the components on the ESEL were included in the NTTF 2.3 seismic walkdowns [18]. Those walkdowns were recent enough that they did not need to be repeated for the ESEP.
AfocusedscopeSMAwasperformedtosupporttheIPEEEforWBNPassummarizedintheFebruary 1998WBNPUnit1IPEEEsubmittal[11]andtheNovember2014WBNPUnit2IPEEEFinalReport[21].
Several ESEL items were previously walked down during the WBNP Unit 1 and 2 Seismic IPEEE program.
Therelayevaluationforafocusedscopeplantislimitedtoareviewoflowseismicruggednessrelays (badactorrelays).Therelayevaluationdocumentedthattherearenolowseismicruggednessrelays usedinapplicationswhichqualifythemasessentialrelays.
Additionally, previous walkdowns performed as part of the Unit 1 and Unit 2 Integrated Interaction Program (IIP) and Equipment Seismic Qualification (ESQ) Programs as referenced in the WBN Unit 1 and Unit 2 IPEEE reports are also credited. Those walkdown results were reviewed and the following steps were taken to confirm that the previous walkdown conclusions remained valid.
In2013,aspartoftheadditionalevaluationstodocumentaHCLPFof0.5g,arelayseismicfunctionality evaluationwasperformedforUnit1and2.Thepurposeoftherelayfunctionalityevaluationwasto verifythatsafeshutdownsystemsmodeledintheWBNIPEEEwouldnotbepreventedfrom performingtheirsafeshutdownfunctionsbecauseofrelay(contact)chatterduringtheperiodof strongmotion.Therelayevaluationfoundthatrelay(contact)chatterduringtheperiodofstrong motionwouldnotpreventsafeshutdownsystemsintheWBNIPEEEfromperformingtheirsafe shutdownfunctions[22].
A walk by was performed to confirm that the equipment material condition and configuration is consistent with the walkdown conclusions and that no new significant interactions related to block walls or piping attached to tanks exist.
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.
If the ESEL item was screened out based on the previous walkdown, that screening evaluation was reviewed and reconfirmed for the ESEP.
6.6 TabulatedESELHCLPFValues(IncludingKeyFailureModes)
The construction work on WBN2 is currently ongoing. However, the construction and equipment installation is sufficiently complete so that a seismic margins walkdown of items of equipment that are unique to the WBN2 ESEL could be performed. This walkdown was recently completed as part of the ESEP in accordance with the requirements of the EPRI SMA methodology.
TabulatedESELHCLPFvaluesareprovidedinAttachmentBforUnit1andUnit2items,aswellasfor itemscommontobothunits.Thefollowingnotesapplytotheinformationinthetables.
6.3.3 Significant Walkdown Findings Consistent with the guidance from NP6041 [8], no significant outliers or anchorage concerns were identified during the WBNP seismic walkdowns. The following findings were noted during the walkdowns, but are not considered significant.
ForitemsscreenedoutusingNP6041[8]screeningtables,thescreeninglevelisprovidedas
Several block walls were identified in the proximity of ESEL equipment. These block walls were also identified during the IPEEE walkdown and assessed for their structural adequacy to withstand the seismic loads resulting from the RLE. Per IPEEE, all block walls at Watts Bar exceed the HCLPF limit of the ESEP and are adequate [21].
>RLGM(0.5g)andthefailuremodeislistedasScreened,(unlessthecontrollingHCLPFvalue isgovernedbyanchorage).
WBN2DPL2681 - Panel is adjacent to block wall (corresponding Unit 1 panel is not near wall). As stated above, this block wall is adequate.
ForitemswhereanchoragecontrolstheHCLPFvalue,theHCLPFvalueislistedinthetableand thefailuremodeisnotedasanchorage.
WBN0XSW2361/AS, WBN0XSW2362/AS, and WBN0XSW2363/AS - Panels are mounted on partition walls. The partition walls are load rated and considered part of building structure, thus the walls are not considered part of the scope for the ESEL.
7.0 INACCESSIBLEITEMS 7.1 IdentificationofESELitemsinaccessibleforwalkdowns AsconcludedbyESEPWalkdownPackage[19],noitemsontheESELwerejudgedtorequireany furtherwalkdownstosatisfytheESEPevaluation
WBN0PNL360FP/A, and FP/B - Both panels are in contact with, but not tied to, a cable tray support above. These interactions are judged to be credible, but not significant by the SRT.
Page 19


Watts Bar Nuclear Plant ESEP Report WBN2MCC213A1 - Motor Control Center (MCC) has interaction issue with an overhead cable tray support. This MCC was reviewed under the IPEEE evaluation for the plant and all potential interactions were resolved for RLGM [21].
WattsBarNuclearPlantESEPReport
WBN1PNL276L1000 - Two anchor bolts project from the floor about an inch higher than the typical installation. Embedment adequacy for these bolts is addressed and it has been verified that the minimum embedment for the anchors has been met.
The findings and other information developed from the ESEP walkdown are summarized in ESEP Walkdown Package [19]. Based on walkdown results, HCLPF capacity evaluations were recommended for the following twelve (12) components.
Motor Control Centers and Switchgear Transformers Control and Instrumentation Panels Instrument Racks Distribution Panels Engine Generators Horizontal Pumps Air Operated Valves Motor Operated Valves Vertical Tanks and Heat Exchangers Horizontal Tanks and Heat Exchangers Relays 6.4    HCLPF Calculation Process ESEL items not included in the previous updated IPEEE evaluations at WBNP were evaluated using the criteria in EPRI NP6041 [8]. Those evaluations included the following steps:
Performing seismic capability walkdowns for equipment not included in previous seismic walkdowns (SQUG, IPEEE, or NTTF 2.3) to evaluate the equipment installed plant conditions Performing screening evaluations using the screening tables in EPRI NP6041 as described in Section 6.2 Performing HCLPF calculations considering various failure modes that include both structural failure modes (e.g., anchorage, load path, etc.) and functional failure modes All HCLPF calculations were performed using the CDFM methodology and are documented in the Summary of HCLPF Calculations for WBNP ESEP [20]. The HCLPF capacities for functionality are based on the comparison of the demand (ISRS) with EPRI 6041 [8] screening level HCLPFs, GERS, or test response spectra. ESEL items not included in the previous updated IPEEE evaluations have HCLPF 0.5g.
Page 20


Watts Bar Nuclear Plant ESEP Report 6.5    Functional Evaluations of Relays ESEP considers cabinets and equipment controls containing relays, contactors, switches, circuit breakers and other electrical and instrumentation components that could be affected by high frequency earthquake motions and that impact operation of equipment in the ESEL.
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.
A focused scope SMA was performed to support the IPEEE for WBNP as summarized in the February 1998 WBNP Unit 1 IPEEE submittal [11] and the November 2014 WBNP Unit 2 IPEEE Final Report [21].
8.0 ESEPCONCLUSIONSANDRESULTS 8.1 SupportingInformation WBNPhasperformedtheESEPasaninterimactioninresponsetotheNRCs50.54(f)letter[1].Itwas performedusingthemethodologiesintheNRCendorsedguidanceinEPRI3002000704[2].
The relay evaluation for a focusedscope plant is limited to a review of low seismic ruggedness relays (bad actor relays). The relay evaluation documented that there are no low seismic ruggedness relays used in applications which qualify them as essential relays.
TheESEPprovidesanimportantdemonstrationofSeismicMarginandexpeditesplantsafety enhancementsthroughevaluationsandpotentialneartermmodificationsofplantequipmentthatcan bereliedupontoprotecttheReactorCorefollowingbeyonddesignbasisseismicevents.
In 2013, as part of the additional evaluations to document a HCLPF of 0.5g, a relay seismic functionality evaluation was performed for Unit 1 and 2. The purpose of the relay functionality evaluation was to verify that safe shutdown systems modeled in the WBN IPEEE would not be prevented from performing their safe shutdown functions because of relay (contact) chatter during the period of strong motion. The relay evaluation found that relay (contact) chatter during the period of strong motion would not prevent safe shutdown systems in the WBN IPEEE from performing their safe shutdown functions [22].
TheESEPispartoftheoverallWBNPresponsetotheNRCs50.54(f)letter[1].OnMarch12,2014,NEI submittedtotheNRCresultsofastudy[13]ofseismiccoredamageriskestimatesbasedonupdated seismichazardinformationasitappliestooperatingnuclearreactorsintheCentralandEasternUnited States(CEUS).Thestudyconcludedthatsitespecificseismichazardsshowthatthere[]hasnot beenanoverallincreaseinseismicriskforthefleetofU.S.plantsbasedonthereevaluatedseismic hazards.Assuch,thecurrentseismicdesignofoperatingreactorscontinuestoprovideasafety margintowithstandpotentialearthquakesexceedingtheseismicdesignbasis.
For the WBNP ESEP Analysis, an evaluation was performed to identify components that are (1) needed for FLEX implementation, (2) not on the IPEEE SSEL, and (3) that have the potential for relay chatter issues. The evaluation identified two sets of components. The first set is System 46 relays associated with the auxiliary feedwater system. A HCLPF was calculated for the relays and in all cases, the HCLFP 0.5g [20]. The second set is the FCV117 and FCV118 steam isolation valves that can isolate the steam supply to the TDAFW pump. In the event of a steam line break, both of these valves can receive a close signal if high temperature is detected in the TDAFW pump room. However, because these valves are motor operated valves (MOV), with a Loss of Offsite Power (LOOP) the valves will not isolate even with a spurious close signal. Therefore, these valves do not present a problem for successful FLEX implementation.
TheNRCsMay9,2014NTTF2.1ScreeningandPrioritizationletter[15]concludedthatthefleetwide seismicriskestimatesareconsistentwiththeapproachandresultsusedintheGl199safety/risk assessment.TheletteralsostatedthatAsaresult,thestaffhasconfirmedthattheconclusions reachedinGl199safety/riskassessmentremainvalidandthattheplantscancontinuetooperate whileadditionalevaluationsareconducted.
6.6    Tabulated ESEL HCLPF Values (Including Key Failure Modes)
AnassessmentofthechangeinseismicriskforWBNPwasincludedinthefleetriskevaluation submittedintheMarch12,2014NEIletter[13]therefore,theconclusionsintheNRCsMay9letter
Tabulated ESEL HCLPF values are provided in Attachment B for Unit 1 and Unit 2 items, as well as for items common to both units. The following notes apply to the information in the tables.
[15]alsoapplytoWBNP.
For items screened out using NP 6041 [8] screening tables, the screening level is provided as
Inaddition,theMarch12,2014NEIletter[13]providedanattachedPerspectivesontheSeismic CapacityofOperatingPlants,which(1)assessedanumberofqualitativereasonswhythedesignof SSCsinherentlycontainmarginbeyondtheirdesignlevel,(2)discussedindustrialseismicexperience databasesofperformanceofindustryfacilitycomponentssimilartonuclearSSCs,and(3)discussed earthquakeexperienceatoperatingplants.
        >RLGM (0.5g) and the failure mode is listed as Screened, (unless the controlling HCLPF value is governed by anchorage).
For items where anchorage controls the HCLPF value, the HCLPF value is listed in the table and the failure mode is noted as anchorage.
7.0    INACCESSIBLE ITEMS 7.1    Identification of ESEL items inaccessible for walkdowns As concluded by ESEP Walkdown Package [19], no items on the ESEL were judged to require any further walkdowns to satisfy the ESEP evaluation Page 21


Watts Bar Nuclear Plant ESEP Report 7.2    Planned Walkdown / Evaluation Schedule / Close Out Unit 1 Containment was not accessible during the walk by verifications. The ESEL components inside the Unit 1 Containment are the same as those inside the Unit 2 Containment. Detailed closeup inspection of all ESEL components was performed for the components inside Unit 2 Containment. All of these Unit 2 ESEL components inside Unit 2 Containment were found to be well constructed, seismically rugged, and had adequate commodity clearance. The TVA Watts Bar radiation protection and operations groups maintain current photographs of all areas inside Unit 1 Containment. These photographs were made available to the walkdown team. The ESEP walkdown team reviewed the photographs and concluded that the ESEL components inside Unit 1 Containment are the same as those inside Unit 2 Containment. It was also concluded that the components were well constructed, seismically rugged, and had adequate commodity clearance [24]. Based on these observations, as concluded by the ESEP Walkdown Package [19], it is judged that no items on the ESEL require any further walkdowns to satisfy the ESEP evaluation.
WattsBarNuclearPlantESEPReport
8.0    ESEP CONCLUSIONS AND RESULTS 8.1    Supporting Information WBNP has performed the ESEP as an interim action in response to the NRCs 50.54(f) letter [1]. It was performed using the methodologies in the NRC endorsed guidance in EPRI 3002000704 [2].
The ESEP provides an important demonstration of Seismic Margin and expedites plant safety enhancements through evaluations and potential nearterm modifications of plant equipment that can be relied upon to protect the Reactor Core following beyond design basis seismic events.
The ESEP is part of the overall WBNP response to the NRCs 50.54(f) letter [1]. On March 12, 2014, NEI submitted to the NRC results of a study [13] of seismic core damage risk estimates based on updated seismic hazard information as it applies to operating nuclear reactors in the Central and Eastern United States (CEUS). The study concluded that sitespecific seismic hazards show that there [] has not been an overall increase in seismic risk for the fleet of U.S. plants based on the reevaluated seismic hazards. As such, the current seismic design of operating reactors continues to provide a safety margin to withstand potential earthquakes exceeding the seismic design basis.
The NRCs May 9, 2014 NTTF 2.1 Screening and Prioritization letter [15] concluded that the fleetwide seismic risk estimates are consistent with the approach and results used in the Gl199 safety/risk assessment. The letter also stated that As a result, the staff has confirmed that the conclusions reached in Gl199 safety/risk assessment remain valid and that the plants can continue to operate while additional evaluations are conducted.
An assessment of the change in seismic risk for WBNP was included in the fleet risk evaluation submitted in the March 12, 2014 NEI letter [13] therefore, the conclusions in the NRCs May 9 letter
[15] also apply to WBNP.
In addition, the March 12, 2014 NEI letter [13] provided an attached Perspectives on the Seismic Capacity of Operating Plants, which (1) assessed a number of qualitative reasons why the design of SSCs inherently contain margin beyond their design level, (2) discussed industrial seismic experience databases of performance of industry facility components similar to nuclear SSCs, and (3) discussed earthquake experience at operating plants.
Page 22


Watts Bar Nuclear Plant ESEP Report The fleet of currently operating NPPs was designed using conservative practices, such that the plants have significant margin to withstand large ground motions safely. This has been borne out for those plants that have actually experienced significant earthquakes. The seismic design process has inherent (and intentional) conservatisms which result in significant seismic margins within SSCs. These conservatisms are reflected in several key aspects of the seismic design process, including:
Page23 ThefleetofcurrentlyoperatingNPPswasdesignedusingconservativepractices,suchthattheplants havesignificantmargintowithstandlargegroundmotionssafely.Thishasbeenborneoutforthose plantsthathaveactuallyexperiencedsignificantearthquakes.Theseismicdesignprocesshasinherent (andintentional)conservatismswhichresultinsignificantseismicmarginswithinSSCs.These conservatismsarereflectedinseveralkeyaspectsoftheseismicdesignprocess,including:
Safety factors applied in design calculations Damping values used in dynamic analysis of SSCs Bounding synthetic time histories for ISRS calculations Broadening criteria for ISRS Response spectra enveloping criteria typically used in SSCs analysis and testing applications Response spectra based frequency domain analysis, rather than explicit time history based time domain analysis Bounding requirements in codes and standards Use of minimum strength requirements of structural components (concrete and steel)
Safetyfactorsappliedindesigncalculations DampingvaluesusedindynamicanalysisofSSCs BoundingsynthetictimehistoriesforISRScalculations BroadeningcriteriaforISRS ResponsespectraenvelopingcriteriatypicallyusedinSSCsanalysisandtestingapplications Responsespectrabasedfrequencydomainanalysis,ratherthanexplicittimehistorybasedtime domainanalysis Boundingrequirementsincodesandstandards Useofminimumstrengthrequirementsofstructuralcomponents(concreteandsteel)
Bounding testing requirements Ductile behavior of the primary materials (that is, not crediting the additional capacity of materials such as steel and reinforced concrete beyond the essentially elastic range, etc.)
Boundingtestingrequirements Ductilebehavioroftheprimarymaterials(thatis,notcreditingtheadditionalcapacityof materialssuchassteelandreinforcedconcretebeyondtheessentiallyelasticrange,etc.)
These design practices combine to result in margins such that the SSCs will continue to fulfill their functions at ground motions well above the SSE.
ThesedesignpracticescombinetoresultinmarginssuchthattheSSCswillcontinuetofulfilltheir functionsatgroundmotionswellabovetheSSE.
The intent of the ESEP is to perform an interim action in response to the NRCs 50.54(f) letter [1] to demonstrate Seismic Margin through a review of a subset of the plant equipment that can be relied upon to protect the Reactor Core following beyond design basis seismic events. In order to complete the ESEP in an expedited amount of time, the RLGM used for the ESEP evaluation is a scaled version of the plants SSE rather than the actual GMRS. To more fully characterize the risk impacts of the seismic ground motion represented by the GMRS on a plantspecific basis, a more detailed seismic risk assessment (SPRA or riskbased SMA) is to be performed in accordance with EPRI 1025287 [16]. As identified in the WBNP Seismic Hazard and GMRS submittal [4], WBNP screens in for a risk evaluation.
TheintentoftheESEPistoperformaninterimactioninresponsetotheNRCs50.54(f)letter[1]to demonstrateSeismicMarginthroughareviewofasubsetoftheplantequipmentthatcanberelied upontoprotecttheReactorCorefollowingbeyonddesignbasisseismicevents.Inordertocomplete theESEPinanexpeditedamountoftime,theRLGMusedfortheESEPevaluationisascaledversionof theplantsSSEratherthantheactualGMRS.Tomorefullycharacterizetheriskimpactsoftheseismic groundmotionrepresentedbytheGMRSonaplantspecificbasis,amoredetailedseismicrisk assessment(SPRAorriskbasedSMA)istobeperformedinaccordancewithEPRI1025287[16].As identifiedintheWBNPSeismicHazardandGMRSsubmittal[4],WBNPscreensinforariskevaluation.
The complete risk evaluation will more completely characterize the probabilistic seismic ground motion input into the plant, the plant response to that probabilistic seismic ground motion input, and the resulting plant risk characterization. WBNP will complete that evaluation in accordance with the schedule identified in NEIs letter dated April 9, 2013 [14] and endorsed by the NRC in their May 7, 2013 letter [17].
Thecompleteriskevaluationwillmorecompletelycharacterizetheprobabilisticseismicground motioninputintotheplant,theplantresponsetothatprobabilisticseismicgroundmotioninput,and theresultingplantriskcharacterization.WBNPwillcompletethatevaluationinaccordancewiththe scheduleidentifiedinNEIsletterdatedApril9,2013[14]andendorsedbytheNRCintheirMay7, 2013letter[17].
8.2     Identification of Planned Modifications Based on the HCLPF values assigned according to the methodology described in Section 6.0, no necessary planned modifications are identified.
8.2 IdentificationofPlannedModifications BasedontheHCLPFvaluesassignedaccordingtothemethodologydescribedinSection6.0,no necessaryplannedmodificationsareidentified.
8.3     Modification Implementation Schedule Per Section 8.2 above, no scheduling of modifications is required.
8.3 ModificationImplementationSchedule PerSection8.2above,noschedulingofmodificationsisrequired.
Page 23


Watts Bar Nuclear Plant ESEP Report 8.4    Summary of Regulatory Commitments There are no additional actions to be performed as a result of the ESEP.
WattsBarNuclearPlantESEPReport
Page 24


Watts Bar Nuclear Plant ESEP Report
Page24 8.4 SummaryofRegulatoryCommitments TherearenoadditionalactionstobeperformedasaresultoftheESEP.
 
WattsBarNuclearPlantESEPReport
 
Page25


==9.0 REFERENCES==
==9.0 REFERENCES==
: 1. NRC 2012, 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 NearTerm Task Force Review of Insights from the Fukushima DaiIchi Accident, Nuclear Regulatory Commission, March 2012.
1.
: 2. Electric Power Research Institute (EPRI) 3002000704, Seismic Evaluation Guidance:
NRC2012,RequestforInformationPursuanttoTitle10oftheCodeofFederal Regulations
Augmented Approach for the Resolution of Fukushima NearTerm Task Force Recommendation 2.1Seismic, May 31, 2013.
 
: 3. Tennessee Valley Authority (TVA), Revised Overall Integrated Plan in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for BeyondDesignBasis External Events (Order Number EA12049) for Watts Bar Nuclear Plant (TAC Nos. MF0950 and MF1177), February 7, 2014.
50.54(f)RegardingRecommendations2.1,2.3and9.3oftheNearTermTaskForceReviewof
: 4. TVA, CNL14038, Seismic Hazard and Screening Report(CEUS Sites), Enclosure 4  Seismic Hazard and Screening Report for Watts Bar Nuclear Plant, March 31, 2014.
 
: 5. EPRI, Watts Bar Seismic Hazard and Screening Report, Electric Power Research Institute, Palo Alto, CA, dated February 7, 2014.
InsightsfromtheFukushimaDaiIchiAccident,NuclearRegulatoryCommission,March2012.
: 6. N.M. Newmark Consulting Engineering Services, NUREG/CR0098, Development of Criteria for Seismic Review of Selected Nuclear Power Plants, 1978.
2.
: 7. Not Used
ElectricPowerResearchInstitute(EPRI)3002000704,SeismicEvaluationGuidance:
: 8. EPRI 1991, A Methodology for Assessment of Nuclear Power Plant Seismic Margin, EPRI NP 6041SL, Revision 1, Electric Power Research Institute, Palo Alto, CA, USA, August 1991.
 
: 9. EPRI, 1991a, Seismic Ruggedness of Relays, EPRI, Palo Alto, California: August 1991, NP7147SL, 1991.
AugmentedApproachfortheResolutionofFukushimaNearTermTaskForce
: 10. EPRI 1994, Methodology for Developing Seismic Fragilities, EPRI TR103959, Electric Power Research Institute, June 1994.
 
: 11. TVA, Watts Bar Nuclear Plant Unit 1 Individual Plant Evaluation of External Events - Final Report,1998.
Recommendation2.1Seismic,May31,2013.
: 12. TVA Calculation CDQ 000 999 2012 000125, Updated WBN Seismic IPEEE HCLPF Capacity, April 2014.
3.
: 13. NEI 2014, Seismic Core Damage Risk Estimates Using the Updated Seismic Hazards for the Operating Nuclear Plants in the Central and Eastern United States, Nuclear Energy Institute, March 2014.
TennesseeValleyAuthority(TVA),RevisedOverallIntegratedPlaninResponsetotheMarch12,
: 14. NEI 2013, Proposed Path Forward for NTTF Recommendation 2.1: Seismic Reevaluations, Nuclear Energy Institute, April 2013.
 
: 15. NRC 2014, Screening and Prioritization Results Regarding Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(F) Regarding Seismic Hazard ReEvaluations for Recommendation 2.1 of the NearTerm Task Force Review of Insights From the Fukushima DaiIchi Accident, Nuclear Regulatory Commission, May 2014.
2012,CommissionOrderModifyingLicenseswithRegardtoRequirementsforMitigation
Page 25
 
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.
 
WattsBarNuclearPlantESEPReport
 
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.
23.
NEI2013,PositionPaper:Shutdown/RefuelingModes.NuclearEnergyInstitute,September
 
2013.NRCADAMSNo.ML13273A514.
24.
RIZZO,R12,SeismicWalkdownofWattsBarNuclearPlantUnits1and2SeismicProbabilistic
 
RiskAssessmentProject,December22,2014.
25.
TVA,2014,WhitepaperWattsBarNuclearPlantExpeditedSeismicEquipmentList,December
 
20,2014.
 
WattsBarNuclearPlantESEPReport
 
PageA1 ATTACHMENTAEXPEDITEDSEISMICEQUIPMENTLIST(ESEL)FORWATTSBAR NUCLEARPLANT
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
#3MainSteam SafetyValve Closed Operational
 
138 WBN2SFV 0010512 SteamGenerator
#3MainSteam SafetyValve Closed Operational
 
139 WBN1SFV 0010517 SteamGenerator
#2MainSteam SafetyValve Closed Operational
 
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PageA15 ESEL Item UNID Description EquipmentState Notes/Comments Normal State Desired State 140 WBN2SFV 0010517 SteamGenerator
#2MainSteam SafetyValve Closed Operational
 
141 WBN1SFV 0010522 SteamGenerator
#1MainSteam SafetyValve Closed Operational
 
142 WBN2SFV 0010522 SteamGenerator
#1MainSteam SafetyValve Closed Operational
 
143 WBN1SFV 0010527 SteamGenerator
#4MainSteam SafetyValve Closed Operational
 
144 WBN2SFV 0010527 SteamGenerator
#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
 
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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
 
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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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
#2LevelControl
 
Screened
>0.5 120 WBN1 LCV003 0172A TDAFWPUMPSG
#3LevelControl
 
Screened
>0.5 121 WBN2 LCV003 0172A TDAFWPUMPSG
#3LevelControl
 
Screened
>0.5 122 WBN1 LCV003 0173B TDAFWPUMPSG
#2LevelControl
 
Screened
>0.5 123 WBN1 LCV003 0174B TDAFWPUMPSG
#1LevelControl
 
Screened
>0.5 124 WBN2 LCV003 0174B TDAFWPUMPSG
#1LevelControl
 
Screened
>0.5 125 WBN1 LCV003 0175A TDAFWPUMPSG
#4LevelControl
 
Screened
>0.5
 
WattsBarNuclearPlantESEPReport
 
PageB12 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 126 WBN2 LCV003 0175A TDAFWPUMPSG
#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
#3MainSteam SafetyValve
 
Screened
>0.5 138 WBN2 SFV001 0512 SteamGenerator
#3MainSteam SafetyValve
 
Screened
>0.5
 
WattsBarNuclearPlantESEPReport
 
PageB13 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 139 WBN1 SFV001 0517 SteamGenerator
#2MainSteam SafetyValve
 
Screened
>0.5 140 WBN2 SFV001 0517 SteamGenerator
#2MainSteam SafetyValve
 
Screened
>0.5 141 WBN1 SFV001 0522 SteamGenerator
#1MainSteam SafetyValve
 
Screened
>0.5 142 WBN2 SFV001 0522 SteamGenerator
#1MainSteam SafetyValve
 
Screened
>0.5 143 WBN1 SFV001 0527 SteamGenerator
#4MainSteam SafetyValve
 
Screened
>0.5 144 WBN2 SFV001 0527 SteamGenerator
#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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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
 
WattsBarNuclearPlantESEPReport
 
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


Watts Bar Nuclear Plant ESEP Report
Anchorage 0.63
: 16. EPRI 2013a, Seismic Evaluation Guidance: Screening, Prioritization and Implementation Details (SPID) for the resolution of Fukushima NearTerm Task Force Recommendation 2.1: Seismic, EPRI1025287, Electric Power Research Institute, February 2013
: 17. NRC 2013, Electric Power Research Institute Final Draft Report Xxxxxx, Seismic Evaluation Guidance: Augmented Approach for the Resolution of Fukushima NearTerm Task Force Recommendation 2.1: Seismic, as an Acceptable Alternative to the March 12, 2012, Information Request for Seismic Reevaluations, Nuclear Regulatory Commission, May 2013.
: 18. NRC ADAMs Number ML12353A251, Enclosure 1  Watts Bar Nuclear Plant, Unit 1 Fukushima NearTerm Task Force Recommendation 2.3: Seismic Response Report, 2012.
: 19. RIZZO, R15  ESEP Walkdown of Watts Bar Nuclear Plant Units 1 & 2, October 21, 2014.
: 20. RIZZO, F31, Summary of HCLPF Calculations for WBNP ESEP Report, October 21, 2014.
21  TVA, 2014, Watts Bar Nuclear Plant Unit 2 (WBN2) Individual Plant Examination of External Events (IPEEE), Revision 0, November 10, 2014.
: 22. Scientech, 2014, WBN2 Enhanced IPEEE Relay Chatter Analysis Report, Revision 0, March 4, 2014.
: 23. NEI 2013, Position Paper: Shutdown/Refueling Modes. Nuclear Energy Institute, September 2013. NRC ADAMS No. ML13273A514.
: 24. RIZZO, R12, Seismic Walkdown of Watts Bar Nuclear Plant Units 1 and 2 Seismic Probabilistic Risk Assessment Project, December 22, 2014.
: 25. TVA, 2014, Whitepaper Watts Bar Nuclear Plant Expedited Seismic Equipment List, December 20, 2014.
Page 26


Watts Bar Nuclear Plant ESEP Report ATTACHMENT A  EXPEDITED SEISMIC EQUIPMENT LIST (ESEL) FOR WATTS BAR NUCLEAR PLANT Page A1
WattsBarNuclearPlantESEPReport


Watts Bar Nuclear Plant ESEP Report Table A1: EXPEDITED SEISMIC EQUIPMENT LIST (ESEL) FOR WATTS BAR NUCLEAR PLANT ESEL                                      Equipment State Item     UNID         Description     Normal      Desired                    Notes/Comments
PageB32 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 381 WBN2 TANK 001 0407A N2TANKNO.1 SUPTO2PCV1 0023A
  #                                    State      State Solid State WBN1PNL 1                    Protection    Operational Operational 099R48A System Train A Solid State WBN2PNL 2                    Protection    Operational Operational 099R50B System Train B Reactor WBN2PNL 3                  Protection I  Operational Operational 099R2D Process System Solid State WBN2PNL 4                    Protection    Operational Operational 099R48A System Train A Solid State WBN1PNL 5                    Protection    Operational Operational 099R50B System Train B Reactor WBN2PNL 6                  Protection II  Operational Operational 099R6E Process System WBN1PNL      ICCM System 7                                  Operational Operational ICCM Train A Unit 1 Unit 1 Auxiliary Instrument Room 275R179A      Train A CH 1 Common Q WBN2PNL                                                Common Q Train A Unit 2 Unit 2 Auxiliary Instrument 8                  PAMS Panel    Operational Operational 275R179A                                                                      Room Train A WBN1PNL      ICCM System 9                                  Operational Operational ICCM Train B Unit 1 Unit 1 Auxiliary Instrument Room 275R180B      Train B CH 2 Common Q WBN2PNL                                                Common Q Train B unit 2 Unit 2 Auxiliary Instrument 10                  PAMS Panel    Operational Operational 275R180B                                                                      Room Train B Page A2


Watts Bar Nuclear Plant ESEP Report ESEL                                Equipment State Item    UNID      Description    Normal      Desired            Notes/Comments
Anchorage 0.63 382 WBN1 TANK 001 0407B N2TANKNO.2 SUPTO1PCV 0010023A
  #                              State      State WBN2HIC  RX HEAD VENT 11                            Operational Operational 0FSI8; Main Control Room panel M4 068396  FLOW CONTROL Solid State WBN2PNL 12              Protection  Operational Operational 099R46A System Train A Solid State WBN2PNL 13              Protection  Operational Operational 099R49B System Train B Reactor WBN2PNL 14              Protection II Operational Operational 099R6E Process System WBN1 SIS Accumulator 15 ACUM063                  Operational Operational Tank 1 0001 WBN1 SIS Accumulator 16 ACUM063                  Operational Operational Tank 2 0002 WBN1 SIS Accumulator 17 ACUM063                  Operational Operational Tank 3 0003 WBN1 SIS Accumulator 18 ACUM063                  Operational Operational Tank 4 0004 WBN0BAT    125 V Vital 19                            Operational Operational 2360001D    Battery I WBN0BAT    125 V Vital 20                            Operational Operational 2360002E    Battery II WBN0BAT    125 V Vital 21                            Operational Operational 2360003F    Battery III Page A3


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item    UNID      Description      Normal      Desired              Notes/Comments
Anchorage 0.63 383 WBN2 TANK 001 0407B N2TANKNO.2 SUPTO2PCV1 0023A
  #                                  State      State WBN0BAT    125 V Vital 22                              Operational Operational 2360004G    Battery IV WBN1BD  6.9 KV Shutdown 23                              Operational Operational  Primary Path OIP Figure A324, 25, and 26 211AA    Board 1AA WBN2BD  6.9 KV Shutdown                          Primary Path OIP Figure A324 and A326.
24                              Operational Operational 211BB    Board 2BB                                      Also, see ESEL Item 200.
WBN1BD  480V Shutdown 25                              Operational Operational 212A001A  Board 1A1A WBN2BD  480V Shutdown 26                              Operational Operational  Component Cooling System Pump 2AA 212A001A  Board 2A1A WBN1BD  480V Shutdown 27                              Operational Operational Primary Path OIP Figure A324, 25, and 26 212A002A  Board 1A2A WBN2BD  480V Shutdown 28                              Operational Operational Containment Air Return Fan 39. ESEL # 146.
212B002B  Board 2B2B WBN0BD      125V Vital 29                              Operational Operational 2360001D  Battery Board I WBN0BD      125V Vital 30                              Operational Operational 2360002E  Battery Board II WBN0BD      125V Vital 31                              Operational Operational 2360003F Battery Board III WBN0BD      125V Vital 32                              Operational Operational 2360004G Battery Board IV WBN0CHGR    125 V Vital 33                              Operational Operational 2360001D Battery Charger I 125 V Vital WBN0CHGR 34              Battery Charger  Operational Operational 2360002/E II Page A4


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item    UNID      Description    Normal      Desired            Notes/Comments
Anchorage 0.63 384 WBN1 TANK 001 0408A N2TANKNO.1 SUPTO1PCV 0010005A
  #                                State      State 125 V Vital WBN0CHGR 35            Battery Charger  Operational Operational 2360003/F III 125 V Vital WBN0CHGR 36            Battery Charger  Operational Operational 2360004/G IV WBN1HTX      CCS HEAT 37                              Operational Operational Flow path to support SIP lube oil cooler 0700185  EXCHANGER A WBN2HTX      CCS HEAT 38                              Operational Operational Flow path to support SIP lube oil cooler 0700185  EXCHANGER B WBN1HTX      RHR HEAT                                  RWST gravity feed path 39                              Operational Operational 0740030A EXCHANGER 1A                            Flow path to support SIP lube oil cooler WBN2HTX      RHR HEAT                                  RWST gravity feed path 40                              Operational Operational 0740031A EXCHANGER 2A                            Flow path to support SIP lube oil cooler WBN1INV  120 V AC Vital 41                              Operational Operational 2350001D    Inverter 1I WBN2INV  120 V AC Vital 42                              Operational Operational 2350001D    Inverter 2I WBN1INV  120 V AC Vital 43                              Operational Operational 2350002E    Inverter 1II WBN2INV  120 V AC Vital 44                              Operational Operational 2350002E    Inverter 2II WBN1INV  120 V AC Vital 45                              Operational Operational 2350003F  Inverter 1III WBN2INV  120 V AC Vital 46                              Operational Operational 2350003F  Inverter 2III WBN1INV  120 V AC Vital 47                              Operational Operational 2350004G  Inverter 1IV Page A5


Watts Bar Nuclear Plant ESEP Report ESEL                                Equipment State Item    UNID      Description    Normal      Desired                  Notes/Comments
Anchorage 0.63 385 WBN2 TANK 001 0408A N2TANKNO.1 SUPTO2PCV 0010005A
  #                              State      State WBN2INV  120 V AC Vital 48                            Operational Operational 2350004G  Inverter 2IV 480V Reactor WBN1MCC                                        FCV6380 and 118 Cold Leg 1 and 3 Accumulator 49            MOV Board 1A1  Operational Operational 213A001A                                                            Isolation A
480V Reactor WBN2MCC                                        FCV6380 and 118 Cold Leg 1 and 3 Accumulator 50            MOV Board 2A1  Operational Operational 213A001A                                                            Isolation A
480V Reactor WBN1MCC                                          FCV6398 and 67 Cold Leg 2 and 4 Accumulator 51            MOV Board 1B1  Operational Operational 213B001B                                                            Isolation B
480V Reactor WBN2MCC                                          FCV6398 and 67 Cold Leg 2 and 4 Accumulator 52            MOV Board 2B1  Operational Operational 213B001B                                                            Isolation B
Cont & Aux Bldg WBN1MCC 53            Vent Board 1A1 Operational Operational                  H2 igniters U1A 214A001A A
Cont & Aux Bldg WBN2MCC 54            Vent Board 2B1 Operational Operational                  H2 igniters U2B 214B001B B
Cont & Aux Bldg WBN1MCC 55            Vent Board 1A2 Operational Operational    2 IP & 1 HP FLEX Pump. OIP Figure A323 214A002A A
Cont & Aux Bldg WBN2MCC 56            Vent Board 2B2 Operational Operational    2 IP & 2 HP FLEX Pump. OIP Figure A323 214B002B B
480 V WBN1OXF 57              Transformer  Operational Operational 212A001A 1A1A Page A6


Watts Bar Nuclear Plant ESEP Report ESEL                                Equipment State Item    UNID      Description    Normal      Desired                    Notes/Comments
Anchorage 0.63 386 WBN1 TANK 001 0408B N2TANKNO.2 SUPTO1PCV 0010005A
  #                              State      State 480 V WBN2OXF 58              Transformer  Operational Operational 212A001A 2A1A 480 V WBN1OXF 59              Transformer  Operational Operational    OIP Figure A324 and 26 , Primary Path 212A002A 1A2A 480 V WBN2OXF 60              Transformer  Operational Operational    OIP Figure A324 and 26 , Primary Path 212B002B 2B2B Centrifugal WBN1PMP                                        Pump oil cooler in flow path to support SIP lube oil 61            Charging Pump  Operational Operational 0620108A                                                                cooler 1AA Centrifugal WBN2PMP                                        Pump 0il cooler in flow path to support SIP lube oil 62            Charging Pump  Operational Operational 0620108A                                                                cooler 2AA SAFETY WBN1PMP 63           INJECTION PUMP  Operational Operational          OIP Figure A325 Primary Path 0630010A 1AA SAFETY WBN2PMP 64            INJECTION PUMP  Operational Operational          OIP Figure A325 Primary Path 0630010A 2AA Component WBN1PMP 65            Cooling System Operational Operational            support SIP lube oil cooler 0700046A Pump 1AA Component WBN2PMP 66            Cooling System Operational Operational            support SIP lube oil cooler 0700059A Pump 2AA WBN1PMP                                            seal water heat exchanger in flow path 67            RHR PUMP 1AA  Operational Operational 0740010A                                                        for SIP lube oil cooler Page A7


Watts Bar Nuclear Plant ESEP Report ESEL                                Equipment State Item    UNID      Description    Normal      Desired              Notes/Comments
Anchorage 0.63 387 WBN2 TANK 001 0408B N2TANKNO.1 SUPTO2PCV 0010005A
  #                              State      State WBN2PMP                                          seal water heat exchanger in flow path 68            RHR PUMP 2BB  Operational Operational 0740020B                                                  for SIP lube oil cooler Steam Generator WBN1PNL 69              Level Control Operational Operational          Auxiliary Control Room 276L011A Panel Steam Generator WBN2PNL 70              Level Control Operational Operational          Auxiliary Control Room 276L011A Panel Steam Generator WBN1PNL 71              Level Control Operational Operational          Auxiliary Control Room 276L011B Panel Steam Generator WBN2PNL 72              Level Control Operational Operational          Auxiliary Control Room 276L011B Panel UNIT CONT.
WBN1PNL                                        Main Control Room Panels M1 through M6 73            BOARD PNL 1M  Operational Operational 278M003 3
UNIT CONT.
WBN2PNL                                        Main Control Room Panels M1 through M6 74            BOARD PNL 2M  Operational Operational 278M003 3
UNIT CONT.
WBN1PNL 75            BOARD PNL 1M  Operational Operational Main Control Room Panels M1 through M6 278M004 4
UNIT CONT.
WBN2PNL 76            BOARD PNL 2M  Operational Operational Main Control Room Panels M1 through M6 278M004 4
WBN1PNL  TEMPERATURE 77                            Operational Operational        Main Control Room Panel 278M010    MONITORING Page A8


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item    UNID        Description    Normal      Desired              Notes/Comments
Anchorage 0.63 388 WBN2 TANK3 0402A N2TANKNO.1 SUPPLYTO2LCV 0030173B
  #                                  State      State WBN2PNL  TEMPERATURE 78                              Operational Operational        Main Control Room Panel 278M010    MONITORING WBN1, 2 7 Day Fuel Oil                        1TANK1838 DG A, 1TANK1841 DG 3B 79  TANK18                    Available  Available Sup Dsl Gen                          2TANK1838 DG 3A, 2TANK1841 DG B 38,41 WBN1TANK  Refueling Water 80                              Operational Operational    Cool without SG & RCS inventory 0630046    Storage Tank WBN2TANK  Refueling Water 81                              Operational Operational    Cool without SG & RCS inventory 0630046    Storage Tank Component WBN1TANK 82              Cooling Water  Operational Operational  Flow path to support SIP lube oil cooler 0700001 Surge Tank Component WBN2TANK 83              Cooling Water  Operational Operational  Flow path to support SIP lube oil cooler 0700001 Surge Tank CVCS SEAL WBN1FCV 84              WATER RETURN    Operational Operational  ECA 0.0 App. A isolate RCP seal return 0620063A HEADER ISOL CVCS SEAL WBN2FCV 85              WATER RETURN    Operational Operational  ECA 0.0 App A isolate RCP seal return 0620063A HEADER ISOL Accumulator WBN1FCV 86              Isolation Valve Operational Operational      480V RMOV Bd ESEL Item # 51 0630067 4
Accumulator WBN2FCV 87              Isolation Valve Operational Operational      480V RMOV Bd ESEL Item # 52 0630067 4
WBN1FCV    Accumulator 88                              Operational Operational      480V RMOV Bd ESEL Item # 49 0630080  Isolation Valve 3 Page A9


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item    UNID        Description    Normal      Desired            Notes/Comments
Anchorage 0.63 389 WBN1 TANK3 0402B N2TANKNO.2 SUPPLYTO1LCV 0030173B
  #                                State        State WBN2FCV    Accumulator 89                              Operational Operational  480V RMOV Bd ESEL Item # 50 0630080  Isolation Valve 3 WBN1FCV  LWR CNTMT A 90                                Open        Closed          FSI5.05 Appendix A 0670083    CLRS SUP CIV WBN1FCV    Accumulator 91                              Operational Operational  480V RMOV Bd ESEL Item # 51 0630098  Isolation Valve 2 WBN2FCV    Accumulator 92                              Operational Operational  480V RMOV Bd ESEL Item # 52 0630098  Isolation Valve 2 WBN1FCV    Accumulator 93                              Operational Operational  480V RMOV Bd ESEL Item # 49 0630118  Isolation Valve 1 WBN2FCV    Accumulator 94                              Operational Operational  480V RMOV Bd ESEL Item # 50 0630118  Isolation Valve 1 WBN2FCV  LWR CNTMT A 95                                Open        Closed  FSI5.05 App. A: align ERCW header 0670083    CLRS SUP CIV WBN1FCV  LWR CNTMT C 96                                Open        Closed  FSI5.05 App. A: align ERCW header 0670091    CLRS SUP CIV WBN2FCV  LWR CNTMT C 97                                Open        Closed  FSI5.05 App. A: align ERCW header 0670091    CLRS SUP CIV WBN1FCV  LWR CNTMT B 98                                Open        Closed  FSI5.05 App. A: align ERCW header 0670099    CLRS SUP CIV WBN2FCV  LWR CNTMT B 99                                Open        Closed  FSI5.05 App. A: align ERCW header 0670099    CLRS SUP CIV WBN1FCV  LWR CNTMT D 100                                Open        Closed  FSI5.05 App. A: align ERCW header 0670107    CLRS SUP CIV WBN2FCV  LWR CNTMT D 101                                Open        Closed  FSI5.05 App. A: align ERCW header 0670107    CLRS SUP CIV WBN1FCV UPR CNTMT CLR 102                                Open        Closed  FSI5.05 App. A: align ERCW header 0670130      A SUP CIV Page A10


Watts Bar Nuclear Plant ESEP Report ESEL                                Equipment State Item    UNID      Description    Normal      Desired            Notes/Comments
Anchorage 0.63 390 WBN2 TANK3 0402B N2TANKNO.2 SUPPLYTO2LCV 0030173B
  #                                State        State WBN2FCV UPR CNTMT CLR 103                              Open        Closed    FSI5.05 App. A: align ERCW header 0670130    A SUP CIV WBN1FCV UPR CNTMT CLR 104                              Open        Closed    FSI5.05 App. A: align ERCW header 0670133    C SUP CIV WBN2FCV UPR CNTMT CLR 105                              Open        Closed    FSI5.05 App. A: align ERCW header 0670133    C SUP CIV WBN1FCV UPR CNTMT CLR 106                              Open        Closed    FSI5.05 App. A: align ERCW header 0670138    B SUP CIV WBN2FCV UPR CNTMT CLR 107                              Open        Closed    FSI5.05 App. A: align ERCW header 0670138    B SUP CIV WBN1FCV UPR CNTMT CLR 108                              Open        Closed    FSI5.05 App. A: align ERCW header 0670141    D SUP CIV WBN2FCV UPR CNTMT CLR 109                              Open        Closed    FSI5.05 App. A: align ERCW header 0670141    D SUP CIV WBN2FCV CCS HX DISCH to 110                              Open        Closed    FSI5.05 App. A: align ERCW header 0670143      HDR B WBN1FCV CCS HX DISCH to 111                              Open        Closed    FSI5.05 App. A: align ERCW header 0670143      HDR B WBN0FCV CCS HX C DISCH 112                            Operational Operational            FS15.05 step 16 0670144    to HDR A PRESSURIZER WBN2FCV 113            PORV BLOCK      Open        Open                0FSI8, Train B 0680332B VALVE PRESSURIZER WBN1FCV 114            PORV BLOCK      Open        Open                0FSI8, Train A 0680333 VALVE RC Pump Therm WBN1FCV 115              Barrier Ret  Operational Operational ECA 0.0 App. A Isolate thermal barrier 0700090A CNTNMT Isol Page A11


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item    UNID      Description      Normal      Desired                Notes/Comments
Anchorage 0.63 391 WBN1 TANK3 0402C N2TANKNO.1 SUPPLYTO1LCV 0030174B
  #                                  State      State RC Pump Therm WBN2FCV 116              Barrier Ret    Operational Operational      ECA 0.0 App. A Isolate thermal barrier 0700090A CNTNMT Isol RC Thermal WBN1FCV 117            Barrier Cont Isol Operational Operational      ECA 0.0 App. A Isolate thermal barrier 0700133A Valve RC Thermal WBN2FCV 118            Barrier Cont Isol Operational Operational      ECA 0.0 App. A Isolate thermal barrier 0700133A Valve TD AFW PUMP                              Fails open on loss of AC power or control air.
WBN2LCV 119              SG # 2 Level    Operational Operational      Backup N2 supply bottles available.
0020173B Control                              Manual operation with hand wheel is available.
TD AFW PUMP                              Fails open on loss of AC power or control air.
WBN1LCV 120              SG # 3 Level    Operational Operational      Backup N2 supply bottles available.
0030172A Control                              Manual operation with hand wheel is available.
TD AFW PUMP                              Fails open on loss of AC power or control air.
WBN2LCV 121              SG # 3 Level    Operational Operational      Backup N2 supply bottles available.
0030172A Control                              Manual operation with hand wheel is available.
TD AFW PUMP                              Fails open on loss of AC power or control air.
WBN1LCV 122              SG # 2 Level    Operational Operational      Backup N2 supply bottles available.
0030173B Control                              Manual operation with hand wheel is available.
Page A12


Watts Bar Nuclear Plant ESEP Report ESEL                              Equipment State Item    UNID      Description    Normal      Desired                    Notes/Comments
Anchorage 0.63
  #                              State      State TD AFW PUMP                              Fails open on loss of AC power or control air.
WBN1LCV 123              SG # 1 Level Operational Operational        Backup N2 supply bottles available.
0030174B Control                              Manual operation with hand wheel is available.
TD AFW PUMP                              Fails open on loss of AC power or control air.
WBN2LCV 124              SG # 1 Level Operational Operational        Backup N2 supply bottles available.
0030174B Control                              Manual operation with hand wheel is available.
TD AFW PUMP                              Fails open on loss of AC power or control air.
WBN1LCV 125              SG # 4 Level Operational Operational        Backup N2 supply bottles available.
0030175A Control                              Manual operation with hand wheel is available.
TD AFW PUMP                              Fails open on loss of AC power or control air.
WBN2LCV 126              SG # 4 Level Operational Operational        Backup N2 supply bottles available.
0030175A Control                              Manual operation with hand wheel is available.
SG 1Main STM WBN1PCV                                                Backup N2 supply bottles available; 127            HDR PWR Relief Operational Operational 0010005T                                        Manual operation with hand wheel is available 0FSI7.
Control Valve SG 1Main STM WBN2PCV                                                Backup N2 supply bottles available; 128            HDR PWR Relief Operational Operational 0010005T                                        Manual operation with hand wheel is available 0FSI7.
Control Valve SG 2 Main STM WBN1PCV                                                Backup N2 supply bottles available; 129            HDR PWR Relief Operational Operational 0010012T                                        Manual operation with hand wheel is available 0FSI7.
Control Valve Page A13


Watts Bar Nuclear Plant ESEP Report ESEL                                Equipment State Item    UNID      Description    Normal      Desired                    Notes/Comments
WattsBarNuclearPlantESEPReport
  #                                State      State SG 2 Main STM WBN2PCV                                                Backup N2 supply bottles available; 130            HDR PWR Relief Operational Operational 0010012T                                        Manual operation with hand wheel is available 0FSI7.
Control Valve SG 3 Main STM WBN1PCV                                                Backup N2 supply bottles available; 131            HDR PWR Relief Operational Operational 0010023T                                        Manual operation with hand wheel is available 0FSI7.
Control Valve SG 3 Main STM WBN2PCV                                                Backup N2 supply bottles available; 132            HDR PWR Relief Operational Operational 0010023T                                        Manual operation with hand wheel is available 0FSI7.
Control Valve SG 4Main STM WBN1PCV                                                Backup N2 supply bottles available; 133            HDR PWR Relief Operational Operational 0010030T                                        Manual operation with hand wheel is available 0FSI7.
Control Valve SG 4Main STM WBN2PCV                                                Backup N2 supply bottles available; 134            HDR PWR Relief Operational Operational 0010030T                                        Manual operation with hand wheel is available 0FSI7.
Control Valve WBN2PCV  PRESSURIZER 135                              Closed    Operational        0FSI8, 125V DC Vital Battery Board II 0680334        PORV WBN1PCV  PRESSURIZER 136                              Closed    Operational        0FSI8, 125V DC Vital Battery Board I 0680340A        PORV Steam Generator WBN1SFV 137            #3 Main Steam    Closed    Operational 0010512 Safety Valve Steam Generator WBN2SFV 138            #3 Main Steam    Closed    Operational 0010512 Safety Valve Steam Generator WBN1SFV 139            #2 Main Steam    Closed    Operational 0010517 Safety Valve Page A14


Watts Bar Nuclear Plant ESEP Report ESEL                                    Equipment State Item     UNID         Description   Normal      Desired              Notes/Comments
PageB33 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 392 WBN2 TANK3 0402C N2TANKNO.1 SUPPLYTO2LCV 0030174B
  #                                    State      State Steam Generator WBN2SFV 140                #2 Main Steam    Closed    Operational 0010517 Safety Valve Steam Generator WBN1SFV 141                #1 Main Steam    Closed    Operational 0010522 Safety Valve Steam Generator WBN2SFV 142                #1 Main Steam    Closed    Operational 0010522 Safety Valve Steam Generator WBN1SFV 143                #4 Main Steam    Closed    Operational 0010527 Safety Valve Steam Generator WBN2SFV 144                #4 Main Steam    Closed    Operational 0010527 Safety Valve WBN1FAN    Containment Air 145                                Operational Operational        480V SD Bd A1A, ESEL # 25.
0300038    Return Fan AA WBN2FAN    Containment Air 146                                Operational Operational        480V SD Bd B2B, ESEL # 28 0300039    Return Fan BB AC OUTPUT WBN1EI235 147                    AMMETER    Operational Operational 0FSI7. 125V vital battery board voltage 001/A1 INVERTER 1I 120 V AC Vital WBN1BD 148                  Instrument  Operational Operational 2350001D Power Board 1I AC OUTPUT WBN1EI235 149                    AMMETER    Operational Operational 0FSI7. 125V vital battery board voltage 002/A1 INVERTER 1II Page A15


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item    UNID        Description    Normal      Desired              Notes/Comments
Anchorage 0.63 393 WBN1 TANK3 0402D N2TANKNO.2 SUPPLYTO1LCV 0030174B
  #                                  State      State 120 V AC Vital WBN1BD 150                  Instrument  Operational Operational 2350002E Power Board 1II 120 V AC Vital WBN1BD 151                  Instrument  Operational Operational 2350003F Power Board 1III 120 V AC Vital WBN1BD      Instrument 152                              Operational Operational 2350004G  Power Board 1 IV WBN1CLR    CCP 1AA LUBE 153                              Operational Operational Flow path to support SIP lube oil cooler 0620108AA  OIL COOLER WBN1CLR    CCP 1AA GEAR 154                              Operational Operational Flow path to support SIP lube oil cooler 0620108BA  OIL COOLER SAFETY WBN1CLR  INJECTION PUMP 155                              Operational Operational Flow path to support SIP lube oil cooler 0630010    1AA LUBE OIL COOLER CNTMT SPRAY WBN1CLR 156              PUMP 1AA OIL  Operational Operational Flow path to support SIP lube oil cooler 0720027 COOLER RHR PUMP 1AA WBN1HTX      SEAL WATER 157                              Operational Operational Flow path to support SIP lube oil cooler 0740010A        HEAT EXCHANGER WBN1XS  STM GEN #3 TRF 158                              Operational Operational  Auxiliary Control Room panel L11A 0030172AA          SW WBN1XS  STM GEN #4 TRF 159                              Operational Operational  Auxiliary Control Room panel L11A 0030175AA          SW Page A16


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item    UNID        Description    Normal      Desired                Notes/Comments
Anchorage 0.63 394 WBN2 TANK3 0402D N2TANKNO.2 SUPPLYTO2LCV 0030174B
  #                                  State      State WBN1XS  STM GEN #2 TRF 160                              Operational Operational    Auxiliary Control Room panel L11B 0030173AB          SW WBN1XS  STM GEN #1 TRF 161                              Operational Operational    Auxiliary Control Room panel L11B 0030174AB          SW WBN1XI046    TURB AFWP 162                              Operational Operational      Main Control Room panel M3 57          DEMAND AUX FPT FLOW WBN1FIC 163                      IND      Operational Operational      Main Control Room panel M4 0460057AS CONTROLLER TD AFW PMP Trip/Throttle Valve WBN1HS 164                  Handswitch  Operational Operational      Main Control Room panel M4 0460056AS AUTO MAN REMOTE SP FOR FIC4657B WBN1SI046    AFWT AS 165                              Operational Operational      Main Control Room panel M4 0056AS          SPEED WBN1XI046    AFWT AS 166                              Operational Operational      Main Control Room panel M4 0054A      MOP POSITION WBN1XI068 167                Plasma Display Operational Operational  ICCM Train A Unit 1 Main Control Room 0100 WBN1XS    Plasma Display 168                              Operational Operational  ICCM Train A Unit 1 Main Control Room 0680101        Key Pad WBN1HS    RCS PRZR PWR 169                              Operational Operational      Main Control Room panel M5 068340AA    RELIEF VALVE Common Q WBN2CPU      Operator 170                              Operational Operational Common Q Train B unit 2 Main Control Room 0946000    Module Node Box Page A17


Watts Bar Nuclear Plant ESEP Report ESEL                                    Equipment State Item    UNID          Description    Normal      Desired              Notes/Comments
Anchorage 0.63 395 WBN1 TANK3 0403A N2TANKNO.1 SUPTO1LCV 0030172A
  #                                    State      State WBN2FOC    Common Q first 171                                Operational Operational Common Q Train B unit 2 Main Control Room 0944001A          modem WBN1HIC    RX HEAD VENT 172                                Operational Operational      Main Control Room panel M6 068397    FLOW CONTROL WBN2HS      SIS PUMP AA 173                                Operational Operational      Main Control Room panel M6 0630010A          MOTOR WBN1HS      SIS PUMP AA 174                                Operational Operational      Main Control Room panel M6 0630010A          MOTOR WBN1HS    AIR RET FAN AA 175                                Operational Operational      Main Control Room panel M9 0300038A          ON/OFF WBN2HS    AIR RET FAN BB 176                                Operational Operational      Main Control Room panel M9 0300039B          ON/OFF AC OUTPUT WBN2EI235 177                  AMMETER      Operational Operational    125V Vital Battery Board Voltage 001/A1 INVERTER 2I 120 V AC Vital WBN2BD 178                  Instrument    Operational Operational 2350001D Power Board 2I 120 V AC Vital WBN2BD 179                  Instrument    Operational Operational 2350002E Power Board 2II AC OUTPUT WBN2EI235 180                  AMMETER      Operational Operational    125V Vital Battery Board Voltage 002/A1 INVERTER 2II 120 V AC Vital WBN2BD 181                  Instrument    Operational Operational 2350003F Power Board 2III Page A18


Watts Bar Nuclear Plant ESEP Report ESEL                                    Equipment State Item    UNID          Description    Normal      Desired              Notes/Comments
Anchorage 0.63 396 WBN2 TANK3 0403A N2TANKNO.1 SUPTO2LCV3 172A
  #                                    State      State 120 V AC Vital WBN2BD        Instrument 182                                Operational Operational 2350004G  Power Board 2 IV WBN2CLR    CCP 2AA LUBE 183                                Operational Operational Flow path to support SIP lube oil cooler 0620108 AA  OIL COOLER WBN2CLR    CCP 2AA GEAR 184                                Operational Operational Flow path to support SIP lube oil cooler 0620108BA    OIL COOLER SAFETY WBN2CLR INJECTION PUMP 185                                Operational Operational Flow path to support SIP lube oil cooler 0630010    2AA LUBE OIL COOLER CNTMT SPRAY WBN2CLR 186                PUMP 2AA OIL  Operational Operational Flow path to support SIP lube oil cooler 0720027 COOLER RHR PUMP 2AA WBN2HTX      SEAL WATER 187                                Operational Operational Flow path to support SIP lube oil cooler 0740010A          HEAT EXCHANGER WBN2XS    STM GEN #3 TRF 188                                Operational Operational  Auxiliary Control Room panel L11A 0030172AA          SW WBN2XS    STM GEN #4 TRF 189                                Operational Operational  Auxiliary Control Room panel L11A 0030175AA          SW WBN2XS    STM GEN #2 TRF 190                                Operational Operational  Auxiliary Control Room panel L11B 0030173AB          SW WBN2XS    STM GEN #1 TRF 191                                Operational Operational  Auxiliary Control Room panel L11B 0030174AB          SW WBN2XI046    TURB AFWP 192                                Operational Operational    Main Control Room Panel M3 57            DEMAND Page A19


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item    UNID        Description    Normal      Desired              Notes/Comments
Anchorage 0.63 397 WBN1 TANK3 0403B N2TANKNO.2 SUPTO1LCV 003172A
  #                                  State      State AUX FPT FLOW WBN2FIC 193                      IND      Operational Operational      Main Control Room panel M4 0460057AS CONTROLLER TD AFW PMP Trip/Throttle Valve WBN2HS 194                  Handswitch  Operational Operational      Main Control Room panel M4 0460056AS AUTO MAN REMOTE SP FOR FIC4657B WBN2SI046    AFWT AS 195                              Operational Operational      Main Control Room panel M4 0056AS          SPEED WBN2XI046    AFWT AS 196                              Operational Operational      Main Control Room panel M4 0054A    MOP POSITION WBN2HS    RCS PRZR REL 197                              Operational Operational      Main Control Room panel M5 068333A    FLOW CONTROL WBN2HIC    RX HEAD VENT 198                              Operational Operational      Main Control Room panel M6 068397    FLOW CONTROL WBN2MON    Plasma Touch 199                              Operational Operational Common Q Train B Unit 2 Main Control Room 0680110    Screen Display WBN2BD  6.9kV Shutdown 200                              Operational Operational      Primary Path OIP Figure A325 211AA      Board 2AA WBN2 SIS Accumulator 201  ACUM063                    Operational Operational Tank 1 0001 WBN2 SIS Accumulator 202  ACUM063                    Operational Operational Tank 2 0002 Page A20


Watts Bar Nuclear Plant ESEP Report ESEL                                      Equipment State Item      UNID        Description      Normal      Desired                  Notes/Comments
Anchorage 0.63 398 WBN2 TANK3 0403B N2TANKNO.2 SUPTO2LCV3 172A
  #                                      State      State WBN2 SIS Accumulator 203  ACUM063                      Operational Operational Tank 3 0003 WBN2 SIS Accumulator 204  ACUM063                      Operational Operational Tank 4 0004 WBN1HIC    RX HEAD VENT 205                                  Operational Operational                      0FSI8 068396    FLOW CONTROL Reactor WBN1PNL 206                  Protection I  Operational Operational 099R2D Process System Solid State WBN1PNL 207                  Protection    Operational Operational 099R46A System Train A Solid State WBN1PNL 208                  Protection    Operational Operational 099R49B System Train B Reactor WBN1PNL 209                  Protection II  Operational Operational 099R6E Process System WBN1PMP      Containment 210                                  Operational Operational seal water HX in flow path to support SIP oil cooler 0720027A  Spray Pump 1AA MAIN STEAM LOOP 4 WBN2PI001 211                    PRESSURE      Operational Operational                Local Panel 2L381 0027D (typical for each SG)
TD AFW PMP WBN2HS 212              TRIP/THV 2FCV    Operational Operational        junction box 2238 TDAFWP Room 0460056BS 151 POS CNTL Page A21


Watts Bar Nuclear Plant ESEP Report ESEL                                    Equipment State Item      UNID        Description    Normal      Desired              Notes/Comments
Anchorage 0.63 399 WBN1 TANK3 0403C N2TANKNO.1 SUPTO1LCV 0030175A
  #                                    State      State Pressure Switch to open U2 AOV 2FCV36386 from AFW WBN2PS 213                  Supply Tank  Operational Operational 0020321 upon low pressure in U1 Condensate supply piping.
Solenoid valve to open AFW WBN1, 2FSV 214                  Supply Tank  Operational Operational 0036386 insolation Valve 1,2 FCV36386 WBN1FT63 Safety Injection                                  FT63151 on rack L655 215                                Operational Operational 151        Pump Flow                                  (refer to M6 for FI63151)
WBN2FT63 Safety Injection                                    FT6320 on rack L472 216                                Operational Operational 20        Pump Flow                                    (refer to M6 for FI6320)
MAIN STEAM LOOP 4 WBN1PI001                                            Typical for each steam generator.
217                    PRESSURE    Operational Operational 0027D                                              Local Panel L381, ESEL # 247 and 248.
(typical for each SG)
TD AFW PMP WBN1HS 218              TRIP/THV 1FCV  Operational Operational  junction box 2238 TDAFWP Room 0460056BS 151 POS CNTL Fuel Oil XFR WBN0SW Pump 219  3600103C,                    Standby    Operational Disconnect 203C Switch Page A22


Watts Bar Nuclear Plant ESEP Report ESEL                                    Equipment State Item    UNID        Description      Normal      Desired            Notes/Comments
Anchorage 0.63 400 WBN2 TANK3 0403C N2TANKNO.1 SUPTO2LCV3 175A
  #                                    State      State 220                                                                    Not used WBN0PMP    Fuel Oil System 221                                Standby    Operational 360103, 203  Transfer Pump Level Indicating Transmitter for WBN0LIT  the AFW Supply 222                                Operational Operational Yard  AFW Supply Tank Valve Vault 003227        Tank and High/Low Level Alarms Primary Cntrl WBN0FU1 223              Fuse for Fuel Oil  Standby    Operational          0SW3600003A/1 3600103A Pump A Starter Secondary Cntrl WBN0FU1 224              Fuse for Fuel Oil  Standby    Operational          0SW3600003A/1 3600103B Pump A Starter Primary Cntrl WBN0FU1 225              Fuse for Fuel Oil  Standby    Operational          0SW3600003A/1 3600103C Pump A Starter 480 V FLEX Main WBN0FUDS 226              Panel A  Main    Standby    Operational            PNL360FP/A 360FP/AM Disconnect 480 v FLEX Main WBN0FUDS 227              Panel B  Main    Standby    Operational            PNL360FP/B 360FP/BM Disconnect 480v AC Vital WBN0XSW 228              Transfer Switch  Operational Operational 2360004S IV Page A23


Watts Bar Nuclear Plant ESEP Report ESEL                                    Equipment State Item    UNID        Description      Normal      Desired            Notes/Comments
Anchorage 0.63 401 WBN1 TANK3 0403D N2TANKNO.2 SUPTO1LCV 0030175A
  #                                    State      State 480v AC Vital WBN0XSW 229              Transfer Switch  Operational Operational 2360003S III WBN0XSW      480v AC Vital 230                                Operational Operational 2360002S  Transfer Switch II WBN0XSW      480v AC Vital 231                                Operational Operational 2360001S  Transfer Switch I 480 V FLEX DG WBN0GNGC        Neutral 232                                  Standby    Operational 360DG/A, B      Grounding Resistor Box WBN0BKR  480 V FLEX DG 233                                  Standby    Operational 360DG/A, B    Circuit Breaker Hydrogen WBN1HTR 234              Igniters Group A  Operational Operational 1SI2681A lists locations of igniters 268various 34 igniters Hydrogen WBN2HTR 235              Igniters Group B  Operational Operational 2SI2681B lists locations of igniters 268various 34 igniters Conservation WBN0RFV    vent valve for 236                                Operational Operational 0030005    the AFW Supply Tank.
TD Aux WBN1FCV 237              Feedwater Pmp    Operational Operational 0010052 Governor Valve TD Aux WBN2FCV 238              Feedwater Pmp    Operational Operational 0010052 Governor Valve Page A24


Watts Bar Nuclear Plant ESEP Report ESEL                                    Equipment State Item    UNID        Description      Normal      Desired                    Notes/Comments
Anchorage 0.63 402 WBN2 TANK3 0403D N2TANKNO.2 SUPTO2LCV3 175A
  #                                    State      State Pressure WBN0PI003 239              indicator for the Operational Operational        Yard  AFW Supply Tank Valve Vault 1
AFW Supply Tank Pressure Switch to open U1 AOV 1FCV36386 from AFW WBN1PS 240                  Supply Tank    Operational Operational 0020320 upon low pressure in U1 Condensate supply piping.
3MW Diesel                            3A Primary U1, 3B Primary U2 OIP Figure A324 and WBN0BD 241              Generator 6.9KV    Standby    Operational                        26.
3600003A, 3B Switchgear                                  3A Primary U1 and U2 OIP figure A325.
Hydrogen WBN2DXF 242                  Mitigation    Operational Operational            C&A VT BD 2B1B, ESEL # 54 2680002B Transformer Hydrogen WBN1DXF 243                  Mitigation    Operational Operational            C&A VT BD 1A1A, ESEL # 53 2680001A Transformer WBN0DXF  480 V FLEX DG 2 244  360DG/AP,      KVA Sealed      Standby    Operational BP              XFMR 6900V 3MW WBN0XFMR FLEX Diesel GEN 245  3603A/1,                      Standby    Operational 20 KVA Dry Type 3B/1 Transformer Page A25


Watts Bar Nuclear Plant ESEP Report ESEL                                    Equipment State Item    UNID        Description      Normal      Desired  Notes/Comments
Anchorage 0.63 403 WBN0 TANK 0030226 AFWSupplyTank 500,000gallons
  #                                    State      State 6900V 3MW WBN0XFMR FLEX Diesel GEN 246  3603A/2,                     Standby    Operational 5 KVA Dry Type 3B/2 Transformer WBN1PNL  TDAFWP Control 247                                Operational Operational 276L381        Panel WBN2PNL  TDAFWP Control 248                                Operational Operational 276L381        Panel Fuel Oil Transfer WBN0PNL 249                Pump Control    Standby    Operational 360DG/A, B1 Panel 125V Vital Batt WBN0XSW    CHGR I 480 V 250                                Standby    Operational OIP Figure A322 2360001AS    FLEX Transfer Switch 125V Vital Batt WBN0XSW  CHGR 2 480 V 251                                Standby    Operational OIP Figure A322 2360002AS    FLEX Transfer Switch 125V Vital Batt WBN0XSW    CHGR 3 480 V 252                                Standby    Operational OIP Figure A322 2360003AS    FLEX Transfer Switch 125V Vital Batt WBN0XSW    CHGR 4 480 V 253                                Standby    Operational OIP Figure A322 2360004AS    FLEX Transfer Switch WBN0PNL  480 V FLEX Fuse 254                                Standby    Operational OIP Figure A322 360FP/A        Panel A Page A26


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item    UNID        Description    Normal      Desired                  Notes/Comments
Anchorage 0.51 404 WBN0 TANK
  #                                  State      State WBN0PNL  480 V FLEX Fuse 255                                Standby    Operational                OIP Figure A322 360FP/B        Panel B AUX FW WBN1PNL 256              TURBINE SPEED  Operational Operational 276L326S CONTROL PANEL AUX FW WBN2PNL 257              TURBINE SPEED  Operational Operational 276L326S CONTROL PANEL 3MW Diesel Generator WBN0RES 258                  Neutral      Standby    Operational 360003A, 3B Grounding Resistor WBN1PNL  AUX FEEDWATER 259                              Operational Operational 276L381A      CONTROL WBN2PNL  AUX FEEDWATER 260                              Operational Operational 276L381A      CONTROL FLEX COMMON WBN0XSW  SPARE HP PUMP 261                                Standby    Operational 360HPCS      TRANSFER SWITCH DG 1AA Transfer                                    Kirkkey, EDG XFSW 1AA WBN1XSW 262              Switch TO 6.9KV Operational Operational        Primary Path OIP Figure A324, 25, 26 82A SD BD 1AA                            Walkdown ID for this UNID is WBN1XSW82A/2A DG 2AA Transfer                                    Kirkkey, EDG XSW 2AA WBN2XSW 263              Switch TO 6.9KV Operational Operational          Primary Path OIP Figure A325 82A SD BD 2AA                            Walkdown ID for this UNID is WBN2XSW82A/2A Page A27
: 360113, 213 6900V3MWFLEX DGFuelOil StorageTank


Watts Bar Nuclear Plant ESEP Report ESEL                                    Equipment State Item      UNID        Description    Normal      Desired            Notes/Comments
Anchorage 0.66
  #                                    State      State DG 1BB Transfer WBN1XSW 264                SwitchDG CS to Operational Operational              Kirkkey 82B SD BD 1BB DG 2BB Transfer WBN2XSW                                                  Kirkkey, EDG XFSW 2BB 265                SwitchDG CS to Operational Operational 82B                                              Primary Path OIP Figure A325 and 26 SD BD 2BB 480 V FLEX DG WBN0FUDS Pump 266  360DG/AP2,                    Standby    Operational Disconnect BP2 Switch 3MW FLEX Diesel WBN0STR 267                  GEN PMP      Standby    Operational 3600103, 203 Starter 6900V 3MW WBN0SW    FLEX Diesel GEN 268 3600003A/1,        Fused      Standby    Operational 3B/1        Disconnect Switch Reactor Level WBN1TE 269                Cap tube Temp  Operational Operational      Common Q Train B Unit 2 0680380E Comp Reactor Vessel WBN2PNL 270              instrumentation  Operational Operational 276L340 System II Panel Reactor Vessel WBN1PNL 271              instrumentation  Operational Operational 276L388 System I Panel Reactor Level WBN2TE 272                Cap tube Temp  Operational Operational      Common Q Train B Unit 2 0680380E Comp Page A28


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item    UNID        Description    Normal      Desired      Notes/Comments
WattsBarNuclearPlantESEPReport
  #                                  State      State WBN0LI3  AFW Supply Tank 273                              Operational Operational 227      Level Indicator WBN1LI63                                            LT6351 on rack L435 274                RWST Level    Operational Operational 51                                              (refer to M6 for LI6351)
WBN2LI63                                            LT6351 on rack L435 275                RWST Level    Operational Operational 51                                              (refer to M6 for LI6351)
WBN1LPF3  TDAFW Pump                                FT3142 on rack L656 276                              Operational Operational 142            Flow                              (refer to M4 for FI3142)
WBN2LPF3  TDAFW Pump                                FT3142 on rack L215 277                              Operational Operational 142            Flow                              (refer to M4 for FI3142)
WBN1LPF3                                            FT3147 on rack L341 278              AFW Flow S/G 3  Operational Operational 147B                                              (refer to M3 for FI3147)
WBN2LPF3                                            FT3147 on rack L912 279              AFW Flow S/G 3  Operational Operational 147B                                              (refer to M3 for FI3147)
WBN1LPF3                                            FT3155 on rack L217 280              AFW Flow S/G 2  Operational Operational 155A                                              (refer to M3 for FI3155)
WBN2LPF3                                            FT3155 on rack L193 281              AFW Flow S/G 2  Operational Operational 155A                                              (refer to M3 for FI3155)
WBN1LPF3                                            FT3163 on rack L654 282              AFW Flow S/G 1  Operational Operational 163B                                              (refer to M3 for FI3163)
WBN2LPF3                                            FT3163 on rack L654 283              AFW Flow S/G 1  Operational Operational 163B                                              (refer to M3 for FI3163)
WBN1LPF3                                            FT3170 on rack L216 284              AFW Flow S/G 4  Operational Operational 170A                                              (refer to M3 for FI3170)
WBN2LPF3                                            FT3170 on rack L216 285              AFW Flow S/G 4  Operational Operational 170A                                              (refer to M3 for FI3170)
WBN1LPL3  S/G WR Level                            LT3111 on rack L183 286                              Operational Operational 111          Loop 4                              (refer to M4 for LI3111)
Page A29


Watts Bar Nuclear Plant ESEP Report ESEL                              Equipment State Item   UNID       Description   Normal      Desired        Notes/Comments
PageB34 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 405 WBN1 CLR003 0001B TDAuxFWPMP OilCooler
  #                              State      State WBN2LPL3 S/G WR Level                          LT3111 on rack L183 287                          Operational Operational 111          Loop 4                            (refer to M4 for LI3111)
WBN1LPL3 S/G NR Level                          LT3148 on rack L182 288                          Operational Operational 148          Loop 3                            (refer to M3 for LI3148)
WBN2LPL3 S/G NR Level                          LT3148 on rack L182 289                          Operational Operational 148          Loop 3                            (refer to M3 for LI3148)
WBN1LPL3 S/G NR Level                          LT3156 on rack L597 290                          Operational Operational 156          Loop 2                            (refer to M3 for LI3148)
WBN2LPL3 S/G NR Level                          LT3156 on rack L597 291                          Operational Operational 156          Loop 2                            (refer to M3 for LI3148)
WBN1LPL3 S/G NR Level                          LT3164 on rack L183 292                          Operational Operational 164          Loop 1                            (refer to M3 for LI3164)
WBN2LPL3 S/G NR Level                          LT3164 on rack L183 293                          Operational Operational 164          Loop 1                            (refer to M3 for LI3164)
WBN1LPL3 S/G NR Level                          LT3171 on rack L183 294                          Operational Operational 171          Loop 4                            (refer to M3 for LI3171)
WBN2LPL3 S/G NR Level                          LT3171 on rack L183 295                          Operational Operational 171          Loop 4                            (refer to M3 for LI3171)
WBN1LPL3 S/G WR Level                            LT343 on rack L183 296                          Operational Operational 43          Loop 1                            (refer to M4 for LI343)
WBN2LPL3 S/G WR Level                            LT343 on rack L183 297                          Operational Operational 43          Loop 1                            (refer to M4 for LI343)
WBN1LPL3 S/G WR Level                            LT356 on rack L182 298                          Operational Operational 56          Loop 1                            (refer to M4 for LI356)
WBN2LPL3 S/G WR Level                            LT356 on rack L182 299                          Operational Operational 56          Loop 2                            (refer to M4 for LI356)
WBN1LPL3 S/G WR Level                            LT398 on rack L182 300                          Operational Operational 98          Loop 3                            (refer to M4 for LI398)
Page A30


Watts Bar Nuclear Plant ESEP Report ESEL                              Equipment State Item    UNID      Description  Normal      Desired                    Notes/Comments
Functionality 3
  #                              State      State WBN2LPL3 S/G WR Level                                        LT398 on rack L182 301                          Operational Operational 98        Loop 3                                         (refer to M4 for LI398)
406 WBN2 CLR003 0001B TDAuxFWPMP OilCooler
WBN1LPL 302                PZR Level  Operational Operational LT68335 on rack L660(refer to M4 for LI68335) 68335 WBN2LPL                                                    LT68335 on rack L660 303                PZR Level  Operational Operational 68335                                                    (refer to M4 for LI68335)
WBN0LPL                                                      LT7842 on rack L945 304                SFP Level  Operational Operational 7842                                                    (refer to 2M10 for LI7842)
WBN1LPN                                        detector through amplifier and optical isolator 305              Nuclear Flux Operational Operational 92131                                                          to indicator on M13 WBN2LPN                                        detector through amplifier and optical isolator 306              Nuclear Flux Operational Operational 92132                                                          to indicator on M13 WBN1LPP1 S/G Pressure                                        PT120 on rack L194 307                          Operational Operational 20A        Loop 3                                        (refer to M4 for PI120)
WBN2LPP1 S/G Pressure                                        PT120 on rack L194 308                          Operational Operational 20A        Loop 3                                        (refer to M4 for PI120)
WBN1LPP1 S/G Pressure                                        PT127 on rack L700 309                          Operational Operational 27B        Loop 4                                        (refer to M4 for PI127)
WBN2LPP1 S/G Pressure                                        PT127 on rack L196 310                          Operational Operational 27B        Loop 4                                        (refer to M4 for PI127)
WBN1LPP1 S/G Pressure                                        PT12 on rack L196 311                          Operational Operational 2A        Loop 1                                          (refer to M4 for PI12)
WBN2LPP1 S/G Pressure                                        PT12 on rack L196 312                          Operational Operational 2A        Loop 1                                          (refer to M4 for PI12)
WBN1LPP1 S/G Pressure                                        PT19 on rack L697 313                          Operational Operational 9A        Loop 2                                          (refer to M4 for PI19)
WBN2LPP1 S/G Pressure                                        PT19 on rack L194 314                          Operational Operational 9A        Loop 2                                          (refer to M4 for PI19)
Page A31


Watts Bar Nuclear Plant ESEP Report ESEL                                Equipment State Item    UNID        Description    Normal      Desired        Notes/Comments
Functionality 3
  #                                State      State WBN1LPP                                              PT6868 on rack L384 315            RCS WR Pressure Operational Operational 6868                                            (refer to M6 for PT6868)
407 WBN2 RLY046 0057S TransferSwin AuxPosIsolRly
WBN2LPP                                              PT6866 on rack L360 316            RCS WR Pressure Operational Operational 6866                                            (refer to M6 for PT6866A)
WBN1LPPD  Containment                              PT30310 on rack L188 317                            Operational Operational 30310        Pressure                            (refer to M9 for PI30310)
WBN2LPPD  Containment                              PT30310 on rack L188 318                            Operational Operational 30310        Pressure                            (refer to M9 for PI30310)
WBN1LPT    Containment                                      PNLR143 319                            Operational Operational 301032    Temperature                            (refer to M6 for TI301032)
WBN2LPT    Containment                                      PNLR143 320                            Operational Operational 301032    Temperature                            (refer to M6 for TI301032)
WBN1LPT    RCS WR Thot                                    PNL099R2 321                            Operational Operational 681        Loop 1                                (refer to M5 for TI681)
WBN2LPT    RCS WR Thot                                    PNL099R2 322                            Operational Operational 681        Loop 1                                (refer to M5 for TI681)
WBN1LPT    RCS WR Tcold                                    PNL099R2 323                            Operational Operational 6818        Loop 1                              (refer to M5 for TI6818)
WBN2LPT    RCS WR Tcold                                    PNL099R2 324                            Operational Operational 6818        Loop 1                              (refer to M5 for TI6818)
WBN1LPT    RCS WR Tcold                                    PNL099R2 325                            Operational Operational 6841        Loop 2                              (refer to M5 for TI6841)
WBN2LPT    RCS WR Tcold                                    PNL099R2 326                            Operational Operational 6841        Loop 2                              (refer to M5 for TI6841)
WBN1LPT    RCS WR Tcold                                    PNL099R6 327                            Operational Operational 6860        Loop 3                              (refer to M5 for TI6860)
WBN2LPT    RCS WR Tcold                                    PNL099R6 328                            Operational Operational 6860        Loop 3                               (refer to M5 for TI6860)
Page A32


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item    UNID        Description    Normal      Desired        Notes/Comments
Chatter 1.55 408 WBN2 RLY046 B002/1S B21RelayAFPT Trip&Throttle VlvPhotoIso
  #                                  State      State WBN1LPT    RCS WR Tcold                                    PNL099R6 329                              Operational Operational 6883          Loop 4                              (refer to M5 for TI6883)
WBN2LPT    RCS WR Tcold                                    PNL099R6 330                              Operational Operational 6883          Loop 4                              (refer to M5 for TI6883)
PORV AND AFW WBN1PNL 331              LCV STM GEN 3  Operational Operational FLEX Nitrogen Control Station 276L1000
                      & 4 PNL PORV AND AFW WBN2PNL 332              LCV STM GEN 3  Operational Operational FLEX Nitrogen Control Station 276L1000
                      & 4 PNL PORV AND AFW WBN1PNL 333              LCV STM GEN 1  Operational Operational FLEX Nitrogen Control Station 276L1001
                      & 2 PNL PORV AND AFW WBN2PNL 334              LCV STM GEN 1  Operational Operational FLEX Nitrogen Control Station 276L1001
                      & 2 PNL Incore WBN1PNL 335              Thermocouple                                ICCM Train A Unit 1 0940008AJ Mon Sys Jbox Incore WBN1PNL 336              Thermocouple                                ICCM Train B Unit 1 0940008BJ Mon Sys Jbox WBN0DPL      480Volt 337 3600003A/1,    Distribution  Standby    Operational 3B/1            Panel WBN0DPL 120/240 VAC 338 3600003A/2,                  Standby    Operational Panel board 3B/2 Page A33


Watts Bar Nuclear Plant ESEP Report ESEL                                    Equipment State Item      UNID        Description    Normal      Desired                    Notes/Comments
Chatter 1.3 409 WBN2 RLY046 B002/2S B22RelayAFPT Trip&Throttle VlvPhotoIso
  #                                    State      State Hydrogen WBN2DPL      Mitigation 339                                Operational Operational 2680002B    Distribution Panel Hydrogen WBN1DPL      Mitigation 340                                Operational Operational 2680001A    Distribution Panel WBN0FUSD    480 V FLEX DG 341  360DG/AP1,  Pump Fusible    Standby    Operational BP1        Disc Switch WBN0DG  480V FLEX/ESBO DG A Primary to Battery Boards 1 and 3 342    360000A,  225 KVA Diesel  Standby    Operational DG B Primary to Battery Boards 2 and 4; OIP fig A322.
000B        Generator 6900V 3MW WBN0DG                                            3A Primary U1, 3B Primary U2 OIP Figure A324, 26.
343              Diesel Generator  Standby    Operational 3600003A, 3B                                                3A primary U1 and U2 OIP Figure A325.
TD Aux WBN1PMP 344              Feedwater Pump Operational Operational                Automatic start on LOOP 0030001AS 1AS TD Aux WBN2PMP 345              Feedwater Pump Operational Operational                Automatic start on LOOP 0030002AS 2AS WBN0PMP Fuel Oil Transfer 346                                Standby    Operational 360DG/A1, B1      Pump WBN1PMP 347                HP FLEX Pump    Standby    Operational                  OIP Figure A323.
360HP01 WBN2PMP 348                HP FLEX Pump    Standby    Operational                  OIP Figure A323.
360HP01 Page A34


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item    UNID      Description      Normal      Desired                  Notes/Comments
Chatter 1.3 410 WBN2 RLY046 B002/3S B23RelayAFPT SpeedControl InstrPwr
  #                                  State        State WBN1PMP 349            FLEX IP PUMP 01    Standby    Operational              OIP Figure A34, A323.
360IP01 WBN2PMP 350            FLEX IP PUMP 01    Standby    Operational              OIP Figure A34, A323 360IP01 WBN1PMP                                              OIP Figure A311, Mode 5 & 6 RCS Makeup.
351            FLEX IP PUMP 02    Standby    Operational 360IP02                                                              OIP Figure A323 WBN2PMP                                              OIP Figure A311. Mode 5 & 6 RCS Makeup 352            FLEX IP PUMP 02    Standby    Operational 360IP02                                                            OIP Figure A323.
FCV SHARED WBN1FCV    AFW TANK 353                                Closed      Open 0036386  OUTLET PIPE TO U1 CONDENSATE FCV FOR AFW WBN2FCV    Supply Tank 354                                Closed      Open 0036386  Outlet Piping to U2 Condensate SFP HEAT WBN0FCV                                              Boundary Valve for Flow path to support SIP 355            EXCHANGER B      Operational Operational 0700194B                                                              lube oil cooler CCS SUPPLY SFP HEAT WBN0FCV                                            Boundary Valve for Flow path to support SIP lube oil 356            EXCHANGER A      Operational Operational 0700197A                                                                  cooler CCS SUPPLY Sta Ser & Cntl Air WBN0FCV                                                          FSI5.05 Appendix A 357            Cmpr Supply Hdr      Open        Closed 0670205                                                            align ERCW header A Isol valve Page A35


Watts Bar Nuclear Plant ESEP Report ESEL                                    Equipment State Item    UNID        Description      Normal      Desired                    Notes/Comments
Chatter 1.55 411 WBN2 RLY046 BAS BA&BBRelay AFPTSpeed ControlBuffer Relay
  #                                    State        State Sta Ser & Cntl Air WBN0FCV                                                            FSI5.05 Appendix A 358            Cmpr Supply Hdr      Open        Closed 0670208                                                              align ERCW header B Isol valve TD Aux WBN1FCV  Feedwater Pmp 359                                Operational Operational  normal power supply: 125V Vital Battery Board III 001051    Trip & Throttle Valve TD Aux WBN2FCV  Feedwater Pmp 360                                Operational Operational  normal power supply: 125V Vital Battery Board I 001051    Trip & Throttle Valve ERCW Header B WBN2FCV                                            switchover to ERCW header. 480V RMOV BD 2B2B 361              TD AFW PMP      Operational Operational 0030179AB                                                              or handwheel SUCT (PS144)
ERCW Header A WBN2FCV                                            switchover to ERCW header. 480V RMOV BD 2A2A 362              TD AFW PMP      Operational Operational 0030136AA                                                              or handwheel SUCT (PS139)
ERCW Header A WBN2FCV                                            switchover to ERCW header. 480V RMOV BD 2A2A 363              TD AFW PMP      Operational Operational 0030136BA                                                              or handwheel SUCT ERCW Header B WBN2FCV                                            switchover to ERCW header. 480V RMOV BD 2B2B 364              TD AFW PMP      Operational Operational 0030179BB                                                              or handwheel SUCT ERCW Header A WBN1FCV                                            switchover to ERCW header. 480V RMOV BD 1A2A 365              TD AFW PMP      Operational Operational 0030136AA                                                              or handwheel SUCT (PS139)
ERCW Header A WBN1FCV                                            switchover to ERCW header. 480V RMOV BD 1A2A 366              TD AFW PMP      Operational Operational 0030136BA                                                              or handwheel SUCT Page A36


Watts Bar Nuclear Plant ESEP Report ESEL                                Equipment State Item    UNID        Description  Normal      Desired                    Notes/Comments
Chatter 1.79 412 WBN2 RLY046 BA1S BA1RelayAFPT SpeedControl Buffer
  #                                State      State ERCW Header B WBN1FCV                                        switchover to ERCW header. 480V RMOV BD 1B2B 367              TD AFW PMP  Operational Operational 0030179AB                                                          or handwheel SUCT (PS144)
ERCW Header B WBN1FCV                                        switchover to ERCW header. 480V RMOV BD 1B2B 368              TD AFW PMP  Operational Operational 0030179BB                                                          or handwheel SUCT Admin WBN1FCV    CCS HX C SUP                                        FSI5.05 Appendix A 369                              locked      Open 0670147A  FROM HDR 1A                                          align ERCW header closed Admin WBN1FCV    CCS HX C SUP                                        FSI5.05 Appendix A 370                              locked      Open 0670458A  FROM HDR 1B                                          align ERCW header closed N2 TANK NO. 1 WBN1TANK 371              SUPPLY TO 1 Operational Operational 30402A LCV0030173B N2 TANK NO. 1 WBN1TANK 372              SUP TO 1PCV Operational Operational 0010405A 0010012B N2 TANK NO. 1 WBN2TANK 373              SUP TO 2PCV Operational Operational 0010405A 0010012B N2 TANK NO. 2 WBN1TANK 374              SUP TO 1PCV Operational Operational 0010405B 0010012B N2 TANK NO. 2 WBN2TANK 375              SUP TO 2PCV Operational Operational 0010405B 0010012B N2 TANK NO. 1 WBN1TANK 376              SUP TO 1PCV Operational Operational 0010406A 0010030B Page A37


Watts Bar Nuclear Plant ESEP Report ESEL                                Equipment State Item    UNID      Description    Normal      Desired  Notes/Comments
Chatter 1.79 413 WBN2 RLY046 BBS BA&BBRelay AFPTSpeed ControlBuffer Relay
  #                                State      State N2 TANK NO. 1 WBN2TANK 377              SUP TO 2PCV  Operational Operational 0010406A 0010030B N2 TANK NO. 2 WBN1TANK 378              SUP TO 1PCV  Operational Operational 0010406B 0010030B N2 TANK NO. 2 WBN2TANK 379              SUP TO 2PCV  Operational Operational 0010406B 0010030B N2 TANK NO. 1 WBN1TANK 380              SUP TO 1PCV  Operational Operational 0010407A 0010023A N2 TANK NO. 1 WBN2TANK 381            SUP TO 2PCV1 Operational Operational 0010407A 0023A N2 TANK NO. 2 WBN1TANK 382              SUP TO 1PCV  Operational Operational 0010407B 0010023A N2 TANK NO. 2 WBN2TANK 383            SUP TO 2PCV1 Operational Operational 0010407B 0023A N2 TANK NO. 1 WBN1TANK 384              SUP TO 1PCV  Operational Operational 0010408A 0010005A N2 TANK NO. 1 WBN2TANK 385              SUP TO 2PCV  Operational Operational 0010408A 0010005A N2 TANK NO. 2 WBN1TANK 386              SUP TO 1PCV  Operational Operational 0010408B 0010005A Page A38


Watts Bar Nuclear Plant ESEP Report ESEL                                Equipment State Item    UNID        Description    Normal      Desired  Notes/Comments
Chatter 1.79 414 WBN2 RLY046 R/AA AuxFWPumpVlv SepRelay
  #                                State      State N2 TANK NO. 1 WBN2TANK 387              SUP TO 2PCV  Operational Operational 0010408B 0010005A N2 TANK NO. 1 WBN2TANK 388              SUPPLY TO 2  Operational Operational 30402A LCV0030173B N2 TANK NO. 2 WBN1TANK 389              SUPPLY TO 1  Operational Operational 30402B LCV0030173B N2 TANK NO. 2 WBN2TANK 390              SUPPLY TO 2  Operational Operational 30402B LCV0030173B N2 TANK NO. 1 WBN1TANK 391              SUPPLY TO 1  Operational Operational 30402C LCV0030174B N2 TANK NO. 1 WBN2TANK 392              SUPPLY TO 2  Operational Operational 30402C LCV0030174B N2 TANK NO. 2 WBN1TANK 393              SUPPLY TO 1  Operational Operational 30402D LCV0030174B N2 TANK NO. 2 WBN2TANK 394              SUPPLY TO 2  Operational Operational 30402D LCV0030174B N2 TANK NO. 1 WBN1TANK 395              SUP TO 1LCV  Operational Operational 30403A 0030172A N2 TANK NO. 1 WBN2TANK 396            SUP TO 2LCV3 Operational Operational 30403A 172A Page A39


Watts Bar Nuclear Plant ESEP Report ESEL                                    Equipment State Item    UNID        Description    Normal      Desired                    Notes/Comments
Chatter 1.4 415 WBN2 RLY046 R/BB AuxFWPumpVlv SepRelay
  #                                    State      State N2 TANK NO. 2 WBN1TANK 397                SUP TO 1LCV  Operational Operational 30403B 003172A N2 TANK NO. 2 WBN2TANK 398              SUP TO 2LCV3  Operational Operational 30403B 172A N2 TANK NO. 1 WBN1TANK 399                SUP TO 1LCV  Operational Operational 30403C 0030175A N2 TANK NO. 1 WBN2TANK 400              SUP TO 2LCV3  Operational Operational 30403C 175A N2 TANK NO. 2 WBN1TANK 401                SUP TO 1LCV  Operational Operational 30403D 0030175A N2 TANK NO. 2 WBN2TANK 402              SUP TO 2LCV3  Operational Operational 30403D 175A WBN0TANK  AFW Supply Tank 403                                Operational Operational 0030226    500,000 gallons 6900V 3MW WBN0TANK 404              FLEX DG Fuel Oil  Standby    Operational 360113, 213 Storage Tank WBN1CLR  TD Aux FW PMP 405                                Operational Operational 0030001B      Oil Cooler WBN2CLR  TD Aux FW PMP 406                                Operational Operational 0030001B      Oil Cooler WBN2RLY    Transfer Sw in 407                                Operational Operational 0460057S  Aux Pos Isol Rly                        T351/TycoPotter & Brumfield Page A40


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item    UNID      Description    Normal      Desired                    Notes/Comments
Chatter 1.4 416 WBN2 RLY046 R1S AFPTACCReset Relay
  #                                  State      State B21 Relay AFPT WBN2RLY 408              Trip & Throttle Operational Operational 046B002/1S Vlv Photo Iso                          Struthers Dunn B22 Relay AFPT WBN2RLY 409              Trip & Throttle Operational Operational 046B002/2S Vlv Photo Iso                          Struthers Dunn B23 Relay AFPT WBN2RLY 410              Speed Control  Operational Operational 046B002/3S Instr Pwr                            P297/Potter & Brumfield BA & BB Relay WBN2RLY    AFPT Speed 411                              Operational Operational 046BAS    Control Buffer Relay                              A160/AllenBradley Co.
BA1 Relay AFPT WBN2RLY 412              Speed Control  Operational Operational 046BA1S Buffer                            A160/AllenBradley Co.
BA & BB Relay WBN2RLY    AFPT Speed 413                              Operational Operational 046BBS    Control Buffer Relay                              A160/AllenBradley Co.
WBN2RLY  Aux FW Pump 414                              Operational Operational 046R/AA    Vlv Sep Relay                          W120/Westinghouse Elec Corp.
WBN2RLY  Aux FW Pump 415                              Operational Operational 046R/BB    Vlv Sep Relay                          W120/Westinghouse Elec Corp.
WBN2RLY  AFPT ACC Reset 416                             Operational Operational 046R1S        Relay                              A160/AllenBradley Co.
WBN2RLY  AFPT ACC Reset 417                              Operational Operational 046R2S        Relay                             A160/AllenBradley Co.
Page A41


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item    UNID      Description      Normal      Desired                    Notes/Comments
Chatter 1.79 417 WBN2 RLY046 R2S AFPTACCReset Relay
  #                                  State      State AFPT SUP Xfer WBN2RLY FCV115,16 &
418                              Operational Operational 046R4A  51 Sep Relay TR A                                AllenBradley Co.
Aux Feed Pump WBN2RLY  Trb Stm Supply 419                              Operational Operational 046R5A  Xfer Sep Relay TR A                                Agastat Turb/Mtr Driven WBN2RLY 420              Aux FW Pump    Operational Operational 046RA1A Vlvs Aux Relay                          W120/Westinghouse Elec Corp.
Turb/Mtr Driven WBN2RLY 421              Aux FW Pump    Operational Operational 046RA2A Vlv SSEP Relay                         W120/Westinghouse Elec Corp.
AFPT Pump 2 WBN2RLY FCV151 Mtr Dr 422                              Operational Operational 046RASS  Vlv 2LCV3156
                      & 164                              W120/Westinghouse Elec Corp.
Turb/Mtr Driven WBN2RLY 423              Aux FW Pump    Operational Operational 046RB1B Vlvs Aux Relay                          W120/Westinghouse Elec Corp.
Turb Driven Aux WBN2RLY 424              FW Pump Vlv    Operational Operational 046RB2B SEP Relay                            W120/Westinghouse Elec Corp.
AFPT Pump 2 WBN2RLY FCV151 Mtr Dr 425                              Operational Operational 046RBSS  Vlv 2LCV3171
                      & 148                              W120/Westinghouse Elec Corp.
Page A42


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item    UNID        Description    Normal      Desired                    Notes/Comments
Chatter 1.79
  #                                  State      State AFPT SUP Xfer WBN2RLY 426              FCV115,16 &  Operational Operational 046SSTS 51 Sep Relay                          A160/AllenBradley Co.
WBN1RLY  Transfer Sw in 427                              Operational Operational 0460057S  Aux Pos Isol Rly                        T351/TycoPotter & Brumfield B21 Relay AFPT WBN1RLY 428              Trip & Throttle Operational Operational 046B002/1S Vlv Photo Iso                          Struthers Dunn B22 Relay AFPT WBN1RLY 429              Trip & Throttle Operational Operational 046B002/2S Vlv Photo Iso                          Struthers Dunn B23 Relay AFPT WBN1RLY 430              Speed Control  Operational Operational 046B002/3S Instr Pwr                            P297/Potter & Brumfield BA & BB Relay WBN1RLY    AFPT Speed 431                              Operational Operational 046BAS    Control Buffer Relay                              A160/AllenBradley Co.
BA1 Relay AFPT WBN1RLY 432              Speed Control  Operational Operational 046BA1S Buffer                            A160/AllenBradley Co.
BA & BB Relay WBN1RLY    AFPT Speed 433                              Operational Operational 046BBS    Control Buffer Relay                              A160/AllenBradley Co.
WBN1RLY  Aux FW Pump 434                              Operational Operational 046R/AA    Vlv Sep Relay                          W120/Westinghouse Elec Corp.
WBN1RLY  Aux FW Pump 435                              Operational Operational 046R/BB    Vlv Sep Relay                          W120/Westinghouse Elec Corp.
Page A43


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item    UNID      Description      Normal      Desired                    Notes/Comments
WattsBarNuclearPlantESEPReport
  #                                  State      State WBN1RLY  AFPT ACC Reset 436                              Operational Operational 046R1S        Relay                              A160/AllenBradley Co.
WBN1RLY  AFPT ACC Reset 437                              Operational Operational 046R2S        Relay                              A160/AllenBradley Co.
AFPT SUP Xfer WBN1RLY FCV115,16 &
438                              Operational Operational 046R4A  51 Sep Relay TR A                                AllenBradley Co.
Aux Feed Pump WBN1RLY  Trb Stm Supply 439                              Operational Operational 046R5A  Xfer Sep Relay TR A                                Agastat Turb/Mtr Driven WBN1RLY 440              Aux FW Pump    Operational Operational 046RA1A Vlvs Aux Relay                          W120/Westinghouse Elec Corp.
Turb/Mtr Driven WBN1RLY 441              Aux FW Pump    Operational Operational 046RA2A Vlv SSEP Relay                          W120/Westinghouse Elec Corp.
AFPT Pump 2 WBN1RLY FCV151 Mtr Dr 442                              Operational Operational 046RASS  Vlv 2LCV3156
                      & 164                              W120/Westinghouse Elec Corp.
Turb/Mtr Driven WBN1RLY 443              Aux FW Pump    Operational Operational 046RB1B Vlvs Aux Relay                          W120/Westinghouse Elec Corp.
Turb Driven Aux WBN1RLY 444              FW Pump Vlv    Operational Operational 046RB2B SEP Relay                            W120/Westinghouse Elec Corp.
Page A44


Watts Bar Nuclear Plant ESEP Report ESEL                                  Equipment State Item     UNID         Description   Normal      Desired                      Notes/Comments
PageB35 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 418 WBN2 RLY046 R4A AFPTSUPXfer FCV115,16&
  #                                  State      State AFPT Pump 2 WBN1RLY  FCV151 Mtr Dr 445                              Operational Operational 046RBSS  Vlv 2LCV3171
51SepRelayTRA Chatter 1.79 419 WBN2 RLY046 R5A AuxFeedPump TrbStmSupply XferSepRelayTR A
                        & 148                              W120/Westinghouse Elec Corp.
AFPT SUP Xfer WBN1RLY 446              FCV115,16 & Operational Operational 046SSTS 51 Sep Relay                          A160/AllenBradley Co.
TDAFW WBN1STR 447                Trip/Throttle  Operational Operational 0460056AS Motor Starter TDAFW WBN2STR 448                Trip/Throttle  Operational Operational 0460056AS Motor Starter WBN1FSV  Reactor Vessel  Operational Operational 125v DC Vital Battery Bd I 449 0680394    Head Vent Isol 450 WBN1FSV  RV HV Throttle  Operational Operational 125v DC Vital Battery Bd I 0680397    Valve 451 WBN2FSV  RV HV Isolation  Operational Operational 125v DC Vital Battery Bd II 0680395    Valve 452 WBN2FSV  RV HV Throttle  Operational Operational 125v DC Vital Battery Bd II 0680396    Valve Page A45


Watts Bar Nuclear Plant ESEP Report ATTACHMENT B ESEP HCLPF VALUES AND FAILURE MODES TABULATION FOR WATTS BAR NUCLEAR PLANT Page B1
Chatter 1.62 420 WBN2 RLY046 RA1A Turb/MtrDriven AuxFWPump VlvsAuxRelay


Watts Bar Nuclear Plant ESEP Report Table B1: ESEP HCLPF VALUES AND FAILURE MODES FOR WATTS BAR NUCLEAR PLANT Item                                                  Failure UNID        Description  Notes/Comments                  HCLPF (g)
Chatter 1.4 421 WBN2 RLY046 RA2A Turb/MtrDriven AuxFWPumpVlv SSEPRelay
    #                                                  Mode WBN1        Solid State 1   PNL099  Protection System                  Screened        > 0.5 R48A          Train A WBN2        Solid State 2  PNL099  Protection System                  Screened        > 0.5 R50B          Train B WBN2          Reactor 3  PNL099      Protection I                  Screened        > 0.5 R2D      Process System WBN2        Solid State 4   PNL099  Protection System                  Screened        > 0.5 R48A          Train A WBN1        Solid State 5  PNL099  Protection System                  Screened        > 0.5 R50B          Train B WBN2         Reactor 6  PNL099      Protection II                  Screened        > 0.5 R6E    Process System WBN1 ICCM System 7  PNL275                                      Screened        > 0.5 Train A CH 1 R179A WBN2 Common Q PAMS 8  PNL275                                      Screened        > 0.5 Panel Train A R179A WBN1 ICCM System 9  PNL275                                      Screened        > 0.5 Train B CH 2 R180B WBN2 Common Q PAMS 10  PNL275                                      Screened        > 0.5 Panel Train B R180B WBN2 RX HEAD VENT 11  HIC068                                      Screened        > 0.5 FLOW CONTROL 396 WBN2        Solid State 12  PNL099  Protection System                  Screened        > 0.5 R46A          Train A WBN2        Solid State 13  PNL099  Protection System                  Screened        > 0.5 R49B          Train B Page B2


Watts Bar Nuclear Plant ESEP Report Item                                          Failure UNID      Description  Notes/Comments                HCLPF (g)
Chatter 1.4 422 WBN2 RLY046 RASS AFPTPump2 FCV151MtrDr Vlv2LCV3156&
  #                                          Mode WBN2      Reactor 14 PNL099  Protection II                Screened        > 0.5 R6E    Process System WBN1 SIS Accumulator 15  ACUM                                  Screened        > 0.5 Tank 1 0630001 WBN1 SIS Accumulator 16  ACUM                                  Screened        > 0.5 Tank 2 0630002 WBN1 SIS Accumulator 17  ACUM                                  Screened        > 0.5 Tank 3 0630003 WBN1 SIS Accumulator 18  ACUM                                  Screened        > 0.5 Tank 4 0630004 WBN0 125 V Vital 19 BAT236                                Screened        > 0.5 Battery I 0001D WBN0 125 V Vital 20 BAT236                                Screened        > 0.5 Battery II 0002E WBN0 125 V Vital 21 BAT236                                Screened        > 0.5 Battery III 0003F WBN0 125 V Vital 22 BAT236                                Screened        > 0.5 Battery IV 0004G WBN1 6.9 KV shutdown 23  BD211                                Screened        > 0.5 Board 1AA AA WBN2 6.9 KV shutdown 24  BD211                                Screened        > 0.5 Board 2BB BB WBN1 480V Shutdown 25  BD212                                Screened        > 0.5 Board 1A1A A001A WBN2 480V Shutdown 26  BD212                                Screened        > 0.5 Board 2A1A A001A WBN1 480V Shutdown 27  BD212                                Screened        > 0.5 Board 1A2A A002A Page B3
164


Watts Bar Nuclear Plant ESEP Report Item                                              Failure UNID      Description      Notes/Comments                HCLPF (g)
Chatter 1.4 423 WBN2 RLY046 RB1B Turb/MtrDriven AuxFWPump VlvsAuxRelay
  #                                              Mode WBN2 480V Shutdown 28 BD212                                    Screened        > 0.5 Board 2B2B B002B WBN0 125V Vital Battery 29 BD236                                    Screened        > 0.5 Board I 0001D WBN0 125V Vital Battery 30 BD236                                    Screened        > 0.5 Board II 0002E WBN0 125V Vital Battery 31 BD236                                    Screened        > 0.5 Board III 0003F WBN0 125V Vital Battery 32 BD236                                    Screened        > 0.5 Board IV 0004G WBN0 CHGR      125 V Vital 33                                            Screened        > 0.5 236  Battery Charger I 0001D WBN0 CHGR      125 V Vital 34                                            Screened        > 0.5 236  Battery Charger II 0002/E WBN0 CHGR      125 V Vital 35                                            Screened        > 0.5 236  Battery Charger III 0003/F WBN0 125 V Vital CHGR 36          Battery Charger                  Screened        > 0.5 236 IV 0004/G WBN1 CCS HEAT 37 HTX070                                    Screened        > 0.5 EXCHANGER A 0185 WBN2 CCS HEAT 38 HTX070                                    Screened        > 0.5 EXCHANGER B 0185 WBN1 RHR HEAT 39 HTX074                                    Screened        > 0.5 EXCHANGER 1A 0030A Page B4


Watts Bar Nuclear Plant ESEP Report Item                                            Failure UNID      Description  Notes/Comments                HCLPF (g)
Chatter 1.4 424 WBN2 RLY046 RB2B TurbDrivenAux FWPumpVlvSEP Relay
  #                                            Mode WBN2 RHR HEAT 40 HTX074                                  Screened        > 0.5 EXCHANGER 2A 0031A WBN1 120 V AC Vital 41 INV235                                  Screened        > 0.5 Inverter 1I 0001D WBN2 120 V AC Vital 42 INV235                                  Screened        > 0.5 Inverter 2I 0001D WBN1 120 V AC Vital 43 INV235                                  Screened        > 0.5 Inverter 1II 0002E WBN2 120 V AC Vital 44 INV235                                  Screened        > 0.5 Inverter 2II 0002E WBN1 120 V AC Vital 45 INV235                                  Screened        > 0.5 Inverter 1III 0003F WBN2 120 V AC Vital 46 INV235                                  Screened        > 0.5 Inverter 2III 0003F WBN1 120 V AC Vital 47 INV235                                  Screened        > 0.5 Inverter 1IV 0004G WBN2 120 V AC Vital 48 INV235                                  Screened        > 0.5 Inverter 2IV 0004G WBN1 MCC    480V Reactor 49                                          Screened        > 0.5 213  MOV Board 1A1A A001A WBN2 MCC    480V Reactor 50                                          Screened        > 0.5 213  MOV Board 2A1A A001A WBN1 MCC    480V Reactor 51                                          Screened        > 0.5 213  MOV Board 1B1B B001B Page B5


Watts Bar Nuclear Plant ESEP Report Item                                          Failure UNID      Description  Notes/Comments                HCLPF (g)
Chatter 1.4 425 WBN2 RLY046 RBSS AFPTPump2 FCV151MtrDr Vlv2LCV3171&
  #                                          Mode WBN2 MCC    480V Reactor 52                                          Screened        > 0.5 213  MOV Board 2B1B B001B WBN1 Cont & Aux Bldg MCC 53          Vent Board 1A1                Screened        > 0.5 214 A
148
A001A WBN2 MCC    Cont & Aux Bldg 54                                          Screened        > 0.5 214  Vent Board 2B1B B001B WBN1 Cont & Aux Bldg MCC 55          Vent Board 1A2                Screened        > 0.5 214 A
A002A WBN2 MCC    Cont & Aux Bldg 56                                          Screened        > 0.5 214  Vent Board 2B2B B002B WBN1        480 V 57 OXF212 Transformer 1A1                Screened        > 0.5 A001A          A WBN2        480 V 58 OXF212 Transformer 2A1                Screened        > 0.5 A001A          A WBN1        480 V 59 OXF212 Transformer 1A2                Screened        > 0.5 A002A          A WBN2        480 V 60 OXF212 Transformer 2B2                Screened        > 0.5 B002B          B WBN1 Centrifugal PMP 61          Charging Pump                  Screened        > 0.5 062 1AA 0108A WBN2 Centrifugal PMP 62          Charging Pump                  Screened        > 0.5 062 2AA 0108A Page B6


Watts Bar Nuclear Plant ESEP Report Item                                          Failure UNID      Description  Notes/Comments                HCLPF (g)
Chatter 1.4 426 WBN2 RLY046 SSTS AFPTSUPXfer FCV115,16&
  #                                          Mode WBN1 SAFETY PMP 63          INJECTION PUMP                Screened        > 0.5 063 1AA 0010A WBN2 SAFETY PMP 64          INJECTION PUMP                Screened        > 0.5 063 2AA 0015A WBN1 Component PMP 65          Cooling System                Screened        > 0.5 070 Pump 1AA 0046A WBN2 Component PMP 66          Cooling System                Screened        > 0.5 070 Pump 2AA 0059A WBN1 PMP 67          RHR PUMP 1AA                Screened        > 0.5 074 0010A WBN2 PMP 68          RHR PUMP 2BB                Screened        > 0.5 074 0020B WBN1  Steam Generator 69 PNL276  Level Control                Screened        > 0.5 L011A        Panel WBN2  Steam Generator 70 PNL276  Level Control                Screened        > 0.5 L011A        Panel WBN1  Steam Generator 71 PNL276  Level Control                Screened        > 0.5 L011B        Panel WBN2  Steam Generator 72 PNL276  Level Control                Screened        > 0.5 L011B        Panel WBN1 UNIT CONT.
51SepRelay
73 PNL278                                Screened        > 0.5 BOARD PNL 1M3 M003 WBN2 UNIT CONT.
74 PNL278                                Screened        > 0.5 BOARD PNL 2M3 M003 Page B7


Watts Bar Nuclear Plant ESEP Report Item                                            Failure UNID      Description    Notes/Comments                HCLPF (g)
Chatter 1.79 427 WBN1 RLY046 0057S TransferSwin AuxPosIsolRly
  #                                            Mode WBN1 UNIT CONT.
75 PNL278                                  Screened        > 0.5 BOARD PNL 1M4 M004 WBN2 UNIT CONT.
76 PNL278                                  Screened        > 0.5 BOARD PNL 2M4 M004 WBN1 TEMPERATURE 77 PNL278                                  Screened        > 0.5 MONITORING M010 WBN2 TEMPERATURE 78 PNL278                                  Screened        > 0.5 MONITORING M010 WBN1,2 TANK  7 Day Fuel Oil Sup 79                                           Screened        > 0.5 018        Dsl Gen 0038, 41 WBN1 Refueling Water 80  TANK                                    Screened        > 0.5 Storage Tank 0630046 WBN2 Refueling Water 81  TANK                                    Screened        > 0.5 Storage Tank 0630046 WBN1      Component 82  TANK    Cooling Water                  Screened        > 0.5 0700001    Surge Tank WBN2      Component 83  TANK    Cooling Water                  Screened        > 0.5 0700001    Surge Tank WBN1     CVCS SEAL 84 FCV062  WATER RETURN                    Screened        > 0.5 0063A    HEADER ISOL WBN2      CVCS SEAL 85 FCV062  WATER RETURN                    Screened        > 0.5 0063A    HEADER ISOL WBN1 Accumulator 86 FCV063                                  Screened        > 0.5 Isolation Valve 4 0067 WBN2 Accumulator 87 FCV063                                  Screened        > 0.5 Isolation Valve 4 0067 Page B8


Watts Bar Nuclear Plant ESEP Report Item                                            Failure UNID      Description  Notes/Comments                HCLPF (g)
Chatter 1.55 428 WBN1 RLY046 B002/1S B21RelayAFPT Trip&Throttle VlvPhotoIso
  #                                            Mode WBN1 Accumulator 88 FCV063                                  Screened        > 0.5 Isolation Valve 3 0080 WBN2 Accumulator 89 FCV063                                  Screened        > 0.5 Isolation Valve 3 0080 WBN1 LWR CNTMT A 90 FCV067                                  Screened        > 0.5 CLRS SUP CIV 0083 WBN1 Accumulator 91 FCV063                                  Screened        > 0.5 Isolation Valve 2 0098 WBN2 Accumulator 92 FCV063                                  Screened        > 0.5 Isolation Valve 2 0098 WBN1 Accumulator 93 FCV063                                  Screened        > 0.5 Isolation Valve 1 0118 WBN2 Accumulator 94 FCV063                                  Screened        > 0.5 Isolation Valve 1 0118 WBN2 LWR CNTMT A 95 FCV067                                  Screened        > 0.5 CLRS SUP CIV 0083 WBN1 LWR CNTMT C 96 FCV067                                  Screened        > 0.5 CLRS SUP CIV 0091 WBN2 LWR CNTMT C 97 FCV067                                  Screened        > 0.5 CLRS SUP CIV 0091 WBN1 LWR CNTMT B 98 FCV067                                  Screened        > 0.5 CLRS SUP CIV 0099 WBN2 LWR CNTMT B 99 FCV067                                  Screened        > 0.5 CLRS SUP CIV 0099 WBN1 LWR CNTMT D 100 FCV067                                  Screened        > 0.5 CLRS SUP CIV 0107 WBN2 LWR CNTMT D 101 FCV067                                  Screened        > 0.5 CLRS SUP CIV 0107 Page B9


Watts Bar Nuclear Plant ESEP Report Item                                            Failure UNID      Description    Notes/Comments                HCLPF (g)
Chatter 1.3 429 WBN1 RLY046 B002/2S B22RelayAFPT Trip&Throttle VlvPhotoIso
  #                                            Mode WBN1 UPR CNTMT CLR 102 FCV067                                  Screened        > 0.5 A SUP CIV 0130 WBN2 UPR CNTMT CLR 103 FCV067                                  Screened        > 0.5 A SUP CIV 0130 WBN1 UPR CNTMT CLR C 104 FCV067                                  Screened        > 0.5 SUP CIV 0133 WBN2 UPR CNTMT CLR C 105 FCV067                                  Screened        > 0.5 SUP CIV 0133 WBN1 UPR CNTMT CLR B 106 FCV067                                  Screened        > 0.5 SUP CIV 0138 WBN2 UPR CNTMT CLR B 107 FCV067                                  Screened        > 0.5 SUP CIV 0138 WBN1 UPR CNTMT CLR 108 FCV067                                  Screened        > 0.5 D SUP CIV 0141 WBN2 UPR CNTMT CLR 109 FCV067                                  Screened        > 0.5 D SUP CIV 0141 WBN2 CCS HX DISCH to 110 FCV067                                  Screened        > 0.5 HDR B 0143 WBN1 CCS HX DISCH to 111 FCV067                                  Screened        > 0.5 HDR B 0143 WBN0 CCS HX C DISCH to 112 FCV067                                  Screened        > 0.5 HDR A 0144 WBN2    PRESSURIZER 113 FCV068  PORV BLOCK                    Screened        > 0.5 0332B        VALVE WBN1    PRESSURIZER 114 FCV068  PORV BLOCK                    Screened        > 0.5 0333        VALVE WBN1  RC Pump Therm 115 FCV070    Barrier Ret                  Screened        > 0.5 0090A    CNTNMT Isol Page B10


Watts Bar Nuclear Plant ESEP Report Item                                            Failure UNID      Description    Notes/Comments                HCLPF (g)
Chatter 1.3 430 WBN1 RLY046 B002/3S B23RelayAFPT SpeedControl InstrPwr
  #                                              Mode WBN2  RC Pump Therm 116 FCV070    Barrier Ret                  Screened        > 0.5 0090A    CNTNMT Isol WBN1      RC Thermal 117 FCV070  Barrier Cont Isol                Screened        > 0.5 0133A        Valve WBN2      RC Thermal 118 FCV070  Barrier Cont Isol                Screened        > 0.5 0133A        Valve WBN2 TD AFW PUMP SG 119 LCV002                                  Screened        > 0.5
              # 2 Level Control 0173B WBN1 TD AFW PUMP SG 120 LCV003                                  Screened        > 0.5
              # 3 Level Control 0172A WBN2 TD AFW PUMP SG 121 LCV003                                  Screened        > 0.5
              # 3 Level Control 0172A WBN1 TD AFW PUMP SG 122 LCV003                                  Screened        > 0.5
              # 2 Level Control 0173B WBN1 TD AFW PUMP SG 123 LCV003                                  Screened        > 0.5
              # 1 Level Control 0174B WBN2 TD AFW PUMP SG 124 LCV003                                  Screened        > 0.5
              # 1 Level Control 0174B WBN1 TD AFW PUMP SG 125 LCV003                                  Screened        > 0.5
              # 4 Level Control 0175A Page B11


Watts Bar Nuclear Plant ESEP Report Item                                            Failure UNID      Description    Notes/Comments                HCLPF (g)
Chatter 1.55
  #                                              Mode WBN2 TD AFW PUMP SG 126 LCV003                                  Screened        > 0.5
              # 4 Level Control 0175A WBN1    SG 1Main STM 127 PCV001  HDR PWR Relief                  Screened        > 0.5 0005T    Control Valve WBN2    SG 1Main STM 128 PCV001  HDR PWR Relief                  Screened        > 0.5 0005T    Control Valve WBN1    SG 2 Main STM 129 PCV001  HDR PWR Relief                  Screened        > 0.5 0012T    Control Valve WBN2    SG 2 Main STM 130 PCV001  HDR PWR Relief                  Screened        > 0.5 0012T    Control Valve WBN1    SG 3 Main STM 131 PCV001  HDR PWR Relief                  Screened        > 0.5 0023T    Control Valve WBN2    SG 3 Main STM 132 PCV001  HDR PWR Relief                  Screened        > 0.5 0023T    Control Valve WBN1    SG 4Main STM 133 PCV001  HDR PWR Relief                  Screened        > 0.5 0030T    Control Valve WBN2    SG 4Main STM 134 PCV001  HDR PWR Relief                  Screened        > 0.5 0030T    Control Valve WBN2 PRESSURIZER 135 PCV068                                  Screened        > 0.5 PORV 0334 WBN1 PRESSURIZER 136 PCV068                                  Screened        > 0.5 PORV 0340A WBN1  Steam Generator 137 SFV001  #3 Main Steam                  Screened        > 0.5 0512      Safety Valve WBN2  Steam Generator 138 SFV001  #3 Main Steam                  Screened        > 0.5 0512      Safety Valve Page B12


Watts Bar Nuclear Plant ESEP Report Item                                            Failure UNID        Description  Notes/Comments                HCLPF (g)
WattsBarNuclearPlantESEPReport
  #                                            Mode WBN1  Steam Generator 139 SFV001  #2 Main Steam                  Screened        > 0.5 0517        Safety Valve WBN2  Steam Generator 140 SFV001  #2 Main Steam                  Screened        > 0.5 0517        Safety Valve WBN1  Steam Generator 141 SFV001  #1 Main Steam                  Screened        > 0.5 0522        Safety Valve WBN2  Steam Generator 142 SFV001  #1 Main Steam                  Screened        > 0.5 0522        Safety Valve WBN1  Steam Generator 143 SFV001  #4 Main Steam                  Screened        > 0.5 0527        Safety Valve WBN2  Steam Generator 144 SFV001  #4 Main Steam                  Screened        > 0.5 0527        Safety Valve WBN1 Containment Air 145 FAN030                                  Screened        > 0.5 Return Fan AA 0038 WBN2 Containment Air 146 FAN030                                  Screened        > 0.5 Return Fan BB 0039 WBN1      AC OUTPUT 147  EI235      AMMETER                    Screened        > 0.5 001/A1      INVERTER 1I WBN1    120 V AC Vital 148  BD235 Instrument Power                Screened        > 0.5 0001D        Board 1I WBN1      AC OUTPUT 149  EI235      AMMETER                    Screened        > 0.5 002/A1    INVERTER 1II WBN1    120 V AC Vital 150  BD235 Instrument Power                Screened        > 0.5 0002E        Board 1II WBN1    120 V AC Vital 151  BD235 Instrument Power                Screened        > 0.5 0003F        Board 1III WBN1    120 V AC Vital 152  BD235 Instrument Power                Screened        > 0.5 0004G        Board 1IV Page B13


Watts Bar Nuclear Plant ESEP Report Item                                           Failure UNID       Description Notes/Comments               HCLPF (g)
PageB36 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 431 WBN1 RLY046 BAS BA&BBRelay AFPTSpeed ControlBuffer Relay
  #                                            Mode WBN1 CCP 1AA LUBE 153 CLR062                                  Screened        > 0.5 OIL COOLER 0108AA WBN1 CCP 1AA GEAR 154 CLR062                                  Screened        > 0.5 OIL COOLER 0108BA SAFETY WBN1 INJECTION PUMP 155 CLR063                                  Screened        > 0.5 1AA LUBE OIL 0010 COOLER WBN1    CNTMT SPRAY 156 CLR072    PUMP 1AA OIL                Screened        > 0.5 0027        COOLER WBN1    RHR PUMP 1AA 157 HTX074    SEAL WATER                  Screened        > 0.5 0010A  HEAT EXCHANGER WBN1 STM GEN #3 TRF 158  XS003                                  Screened        > 0.5 SW 0172AA WBN1 STM GEN #4 TRF 159  XS003                                  Screened        > 0.5 SW 0175AA WBN1 STM GEN #2 TRF 160  XS003                                  Screened        > 0.5 SW 0173AB WBN1 STM GEN #1 TRF 161  XS003                                  Screened        > 0.5 SW 0174AB WBN1      TURB AFWP 162                                          Screened        > 0.5 XI04657      DEMAND WBN1 AUX FPT FLOW 163  FIC046                                Screened        > 0.5 IND CONTROLLER 0057AS TD AFW PMP Trip/Throttle WBN1 Valve Handswitch 164  HS046                                  Screened        > 0.5 AUTO MAN 0056AS REMOTE SP FOR FIC4657B WBN1 AFWT AS 165  SI046                                Screened        > 0.5 SPEED 0056AS Page B14


Watts Bar Nuclear Plant ESEP Report Item                                          Failure UNID      Description  Notes/Comments                HCLPF (g)
Chatter 1.79 432 WBN1 RLY046 BA1S BA1RelayAFPT SpeedControl Buffer
  #                                            Mode WBN1 AFWT AS 166  XI046                                Screened        > 0.5 MOP POSITION 0054A WBN1 167  XI068  Plasma Display                Screened        > 0.5 0100 WBN1 Plasma Display 168  XS068                                Screened        > 0.5 Key Pad 0101 WBN1 RCS PRZR PWR 169  HS068                                Screened        > 0.5 RELIEF VALVE 340AA WBN2      Common Q 170 CPU094 Operator Module                Screened        > 0.5 6000      Node Box WBN2 Common Q first 171 FOC094                                Screened        > 0.5 modem 4001A WBN1 RX HEAD VENT 172 HIC068                                Screened        > 0.5 FLOW CONTROL 397 WBN2 SIS PUMP AA 173  HS063                                Screened        > 0.5 MOTOR 0010A WBN1 SIS PUMP AA 174  HS063                                Screened        > 0.5 MOTOR 0010A WBN1 AIR RET FAN AA 175  HS030                                Screened        > 0.5 ON/OFF 0038A WBN2 AIR RET FAN BB 176  HS030                                Screened        > 0.5 ON/OFF 0039B WBN2      AC OUTPUT 177  EI235    AMMETER                    Screened        > 0.5 001/A1    INVERTER 2I WBN2    120 V AC Vital 178  BD235 Instrument Power                Screened        > 0.5 0001D      Board 2I WBN2    120 V AC Vital 179  BD235 Instrument Power                Screened        > 0.5 0002E      Board 2II Page B15


Watts Bar Nuclear Plant ESEP Report Item                                              Failure UNID        Description  Notes/Comments                HCLPF (g)
Chatter 1.79 433 WBN1 RLY046 BBS BA&BBRelay AFPTSpeed ControlBuffer Relay
  #                                              Mode WBN2        AC OUTPUT 180  EI235      AMMETER                    Screened        > 0.5 002/A1      INVERTER 2II WBN2      120 V AC Vital 181  BD235  Instrument Power                  Screened        > 0.5 0003F        Board 2III WBN2      120 V AC Vital 182  BD235  Instrument Power                  Screened        > 0.5 0004G        Board 2IV WBN2 CCP 2AA LUBE 183 CLR062                                    Screened        > 0.5 OIL COOLER 0108AA WBN2 CCP 2AA GEAR 184 CLR062                                    Screened        > 0.5 OIL COOLER 0108BA SAFETY WBN2 INJECTION PUMP 185 CLR063                                    Screened        > 0.5 2AA LUBE OIL 0010 COOLER WBN2      CNTMT SPRAY 186 CLR072    PUMP 2AA OIL                  Screened        > 0.5 0027          COOLER WBN2    RHR PUMP 2AA 187 HTX074      SEAL WATER                  Screened        > 0.5 0010A  HEAT EXCHANGER WBN2 STM GEN #3 TRF 188  XS003                                    Screened        > 0.5 SW 0172AA WBN2 STM GEN #4 TRF 189  XS003                                    Screened        > 0.5 SW 0175AA WBN2 STM GEN #2 TRF 190  XS003                                    Screened        > 0.5 SW 0173AB WBN2 STM GEN #1 TRF 191  XS003                                    Screened        > 0.5 SW 0174AB WBN2        TURB AFWP 192                                            Screened        > 0.5 XI04657        DEMAND WBN2 AUX FPT FLOW 193  FIC046                                  Screened        > 0.5 IND CONTROLLER 0057AS Page B16


Watts Bar Nuclear Plant ESEP Report Item                                          Failure UNID      Description  Notes/Comments                HCLPF (g)
Chatter 1.79 434 WBN1 RLY046 R/AA AuxFWPumpVlv SepRelay
  #                                            Mode TD AFW PMP Trip/Throttle WBN2 Valve Handswitch 194  HS046                                Screened        > 0.5 AUTO MAN 0056AS REMOTE SP FOR FIC4657B WBN2 AFWT AS 195  SI046                                Screened        > 0.5 SPEED 0056AS WBN2 AFWT AS 196  XI046                                Screened        > 0.5 MOP POSITION 0054A WBN2 RCS PRZR REL 197  HS068                                Screened        > 0.5 FLOW CONTROL 333A WBN2 RX HEAD VENT 198 HIC068                                Screened        > 0.5 FLOW CONTROL 397 WBN2 Plasma Touch 199  MON                                  Screened        > 0.5 Screen Display 0680110 WBN2  6.9 KV shutdown 200                                          Screened        > 0.5 BD211A    Board 2AA WBN2 SIS Accumulator 201  ACUM                                  Screened        > 0.5 Tank 1 0630001 WBN2 SIS Accumulator 202  ACUM                                  Screened        > 0.5 Tank 2 0630002 WBN2 SIS Accumulator 203  ACUM                                  Screened        > 0.5 Tank 3 0630003 WBN2 SIS Accumulator 204  ACUM                                  Screened        > 0.5 Tank 4 0630004 WBN1 RX HEAD VENT 205 HIC068                                Screened        > 0.5 FLOW CONTROL 396 WBN1        Reactor 206 PNL099    Protection I                Screened        > 0.5 R2D    Process System Page B17


Watts Bar Nuclear Plant ESEP Report Item                                              Failure UNID      Description    Notes/Comments                  HCLPF (g)
Chatter 1.4 435 WBN1 RLY046 R/BB AuxFWPumpVlv SepRelay
  #                                                Mode WBN1      Solid State 207 PNL099 Protection System                  Screened        > 0.5 R46A        Train A WBN1      Solid State 208 PNL099 Protection System                  Screened        > 0.5 R49B        Train B WBN1       Reactor 209 PNL099    Protection II                  Screened        > 0.5 R6E    Process System WBN1 PMP      Containment 210                                              Screened        > 0.5 072  Spray Pump 1AA 0027A MAIN STEAM WBN2        LOOP 4 211  PI001      PRESSURE                      Anchorage          0.56 0027D    (typical for each SG)
WBN2    TD AFW PMP 212 HS046  TRIP/THV 2FCV                  Functionality      0.57 0056BS    151 POS CNTL Pressure Switch to open U2 AOV 2FCV36386 WBN2 from AFW Supply 213  PS002                                  Functionality      0.83 Tank upon 0321 low pressure in U1 Condensate supply piping.
Solenoid valve to WBN1,2 open AFW Supply 214 FSV003  Tank insolation                Functionality      0.83 6386  Valve 1,2FCV3 6386 WBN1 Safety Injection 215  FT63                                    Anchorage        > 0.5 Pump Flow 151 WBN2  Safety Injection 216                                            Anchorage        > 0.5 FT6320    Pump Flow Page B18


Watts Bar Nuclear Plant ESEP Report Item                                                Failure UNID      Description    Notes/Comments                    HCLPF (g)
Chatter 1.4 436 WBN1 RLY046 R1S AFPTACCReset Relay
  #                                                  Mode MAIN STEAM WBN1      LOOP 4 217  PI001    PRESSURE                          Anchorage        0.56 0027D  (typical for each SG)
WBN1   TD AFW PMP 218  HS046 TRIP/THV 1FCV                      Functionality      0.57 0056BS  151 POS CNTL WBN0                    HCLPF associated Fuel Oil Transfer SW360                      with Item #404 219          Pmp Disconnect                        Anchorage        0.66 103C,                      Fuel Oil Storage SW 203C                    Tank. Rule of box.
220                                Not Used WBN0                    HCLPF associated PMP    Fuel Oil System    with Item #404 221                                                Anchorage        0.66 360103,  Transfer Pump      Fuel Oil Storage 203                    Tank. Rule of box.
Level Indicating Transmitter for WBN0 the AFW Supply 222 LIT003                                      Anchorage        0.51 Tank and 227 High/Low Level Alarms HCLPF associated WBN0    Primary Cntrl    with Item #267, 223 FU1360 Fuse for Fuel Oil and conservatively  Anchorage          0.5 0103A    Pump A Starter    assigned as 0.5g.
Rule of box.
HCLPF associated WBN0  Secondary Cntrl    with Item #267, 224 FU1360 Fuse for Fuel Oil and conservatively  Anchorage          0.5 0103B  Pump A Starter    assigned as 0.5g.
Rule of box.
HCLPF associated WBN0    Primary Cntrl    with Item #267, 225 FU1360 Fuse for Fuel Oil and conservatively  Anchorage          0.5 0103C  Pump A Starter    assigned as 0.5g.
Rule of box.
WBN0 480 V FLEX Main FUDS 226          Panel A  Main                      Functionality      0.57 360 Disconnect FP/AM Page B19


Watts Bar Nuclear Plant ESEP Report Item                                                    Failure UNID      Description    Notes/Comments                    HCLPF (g)
Chatter 1.79 437 WBN1 RLY046 R2S AFPTACCReset Relay
  #                                                      Mode WBN0 480 v FLEX Main FUDS 227            Panel B  Main                      Functionality      0.57 360 Disconnect FP/BM WBN0 480v AC Vital 228 XSW236                                        Functionality      0.50 Transfer Switch IV 0004S WBN0 480v AC Vital 229 XSW236                                        Functionality      0.50 Transfer Switch III 0003S WBN0 480v AC Vital 230 XSW236                                        Functionality      0.50 Transfer Switch II 0002S WBN0 480v AC Vital 231 XSW236                                        Functionality      0.50 Transfer Switch I 0001S WBN0    480 V FLEX DG      HCLPF assigned GNGC        Neutral      based on Junction 232                                                Functionality      0.57 360      Grounding          Box subgroup DG/A, B    Resistor Box      from HCLPF calc WBN0 480 V FLEX DG 233 BKR360                                        Functionality      0.57 Circuit Breaker DG/A, B WBN1   Hydrogen Igniters screened 234 HTR268    Group A  34                                            0.5 (rugged) various        igniters WBN2  Hydrogen Igniters screened 235 HTR268    Group B  34                                            0.5 (rugged) various        igniters WBN0  Conservation vent screened 236 RFV003  valve for the AFW                                          0.5 (Table 2.4) 0005      Supply Tank.
WBN1  TD Aux Feedwater 237 FCV001    Pmp Governor                          screened          0.5 0052          Valve WBN2  TD Aux Feedwater 238 FCV001    Pmp Governor                          screened          0.5 0052          Valve Pressure indicator WBN0                                          screened 239              for the AFW                                            0.5 PI0031                                        (rugged)
Supply Tank Page B20


Watts Bar Nuclear Plant ESEP Report Item                                              Failure UNID      Description    Notes/Comments                  HCLPF (g)
Chatter 1.79 438 WBN1 RLY046 R4A AFPTSUPXfer FCV115,16&
  #                                                Mode Pressure Switch to open U1 AOV 1FCV36386 WBN1 from AFW Supply                    screened 240  PS002                                                        0.5 Tank upon low                    (rugged) 0320 pressure in U1 Condensate supply piping.
51SepRelayTRA Chatter 1.79 439 WBN1 RLY046 R5A AuxFeedPump TrbStmSupply XferSepRelayTR A
WBN0 3MW Diesel BD360 241          Generator 6.9KV                  Functionality      0.68 0003A, Switchgear 3B WBN2        Hydrogen 242 DXF268      Mitigation                    Anchorage          0.51 0002B      Transformer WBN1       Hydrogen 243 DXF268      Mitigation                    Anchorage          0.51 0001A      Transformer WBN0 DXF360 480 V FLEX DG 2 244                                            Functionality      0.57 DG/AP, KVA Sealed XFMR BP WBN0 6900V 3MW FLEX XFMR Diesel GEN 20 245  360                                    Functionality      0.58 KVA Dry Type 3A/1, Transformer 3B/1 WBN0 6900V 3MW FLEX XFMR Diesel GEN 5 KVA 246  360                                    Functionality      0.57 Dry Type 3A/2, Transformer 3B/2 WBN1 TDAFWP Control 247 PNL276                                    Anchorage          0.56 Panel L381 WBN2 TDAFWP Control 248 PNL276                                    Anchorage          0.56 Panel L381 WBN0  Fuel Oil Transfer 249 PNL360    Pump Control                  Functionality      0.65 DG/A1          Panel Page B21


Watts Bar Nuclear Plant ESEP Report Item                                            Failure UNID    Description  Notes/Comments                HCLPF (g)
Chatter 1.62 440 WBN1 RLY046 RA1A Turb/MtrDriven AuxFWPump VlvsAuxRelay
  #                                              Mode 125V Vital Batt WBN0 CHGR I 480 V 250 XSW236                                Functionality      0.58 FLEX Transfer 0001AS Switch 125V Vital Batt WBN0 CHGR 2 480 V 251 XSW236                                Functionality      0.58 FLEX Transfer 0002AS Switch 125V Vital Batt WBN0 CHGR 3 480 V 252 XSW236                                Functionality      0.58 FLEX Transfer 0003AS Switch 125V Vital Batt WBN0 CHGR 4 480 V 253 XSW236                                Functionality      0.58 FLEX Transfer 0004AS Switch WBN0 480 V FLEX Fuse 254 PNL360                                Functionality      0.57 Panel A FP/A WBN0 480 V FLEX Fuse 255 PNL360                                Functionality      0.57 Panel B FP/B WBN1  AUX FW TURBINE 256 PNL276 SPEED CONTROL                  Functionality      0.85 L326S      PANEL WBN2  AUX FW TURBINE 257 PNL276 SPEED CONTROL                  Functionality      0.85 L326S      PANEL 3MW Diesel WBN0      Generator 258 RES360      Neutral                    Functionality      0.79 003A, 3B    Grounding Resistor WBN1 AUX FEEDWATER 259 PNL276                                Functionality      0.57 CONTROL L381A WBN2 AUX FEEDWATER 260 PNL276                                Functionality      0.57 CONTROL L381A Page B22


Watts Bar Nuclear Plant ESEP Report Item                                                Failure UNID      Description  Notes/Comments                    HCLPF (g)
Chatter 1.4 441 WBN1 RLY046 RA2A Turb/MtrDriven AuxFWPumpVlv SSEPRelay
  #                                                  Mode FLEX COMMON WBN0 SPARE HP PUMP 261 XSW360                                      Functionality      0.57 TRANSFER HPCS SWITCH WBN1  DG 1AA Transfer 262 XSW82  Switch TO 6.9KV                    Functionality      0.57 A      SD BD 1AA WBN2  DG 2AA Transfer 263 XSW82  Switch TO 6.9KV                    Functionality      0.57 A      SD BD 2AA WBN1 DG 1BB Transfer 264 XSW82  Switch DG to SD                    Functionality      0.57 B        BD 1BB WBN2  DG 2BB Transfer 265 XSW82  Switch DG to SD                    Functionality      0.57 B        BD 2BB WBN0 FUDS    480 V FLEX DG 266    360  Pump Disconnect                      Functionality      0.57 DG/AP2,        Switch BP2 WBN0 STR360 3MW FLEX Diesel 267                                                Anchorage        0.54 0103, GEN PMP Starter 203 WBN0 6900V 3MW FLEX SW360 268          Diesel GEN Fused                      Anchorage          0.5 0003A/1, Disconnect Switch 3B/1 WBN1 Reactor Level Cap 269  TE068                                      Anchorage        > 0.5 tube Temp Comp 0380E HCLPF assigned based on WBN2    Reactor Vessel Instruments 270 PNL276  instrumentation                      Anchorage        0.52 mounted on L340    System II Panel unitstrut subgroup from HCLPF calc Page B23


Watts Bar Nuclear Plant ESEP Report Item                                                Failure UNID      Description  Notes/Comments                    HCLPF (g)
Chatter 1.4 442 WBN1 RLY046 RASS AFPTPump2 FCV151MtrDr Vlv2LCV3156&
  #                                                  Mode HCLPF assigned based on WBN1    Reactor Vessel Instruments 271 PNL276  instrumentation                    Anchorage        0.52 mounted on L388    System I Panel unitstrut subgroup from HCLPF calc WBN2 Reactor Level Cap 272  TE068                                      Anchorage        > 0.5 tube Temp Comp 0380E WBN0  AFW Supply Tank                                      > 0.5 273                                              Anchorage LI3227  Level Indicator WBN1                                                        > 0.5 274              RWST Level                      Anchorage LI6351 WBN2                                                        > 0.5 275              RWST Level                      Anchorage LI6351 WBN1                                                        > 0.5 TDAFW Pump 276  LPF3                                      Anchorage Flow 142 WBN2                                                        > 0.5 TDAFW Pump 277  LPF3                                      Anchorage Flow 142 WBN1                                                        > 0.5 278  LPF3 AFW Flow S/G 3                      Anchorage 147B WBN2                                                        > 0.5 279  LPF3 AFW Flow S/G 3                      Anchorage 147B WBN1                                                        > 0.5 280  LPF3 AFW Flow S/G 2                      Anchorage 155A WBN2                                                        > 0.5 281  LPF3 AFW Flow S/G 2                      Anchorage 155A WBN1                                                        > 0.5 282  LPF3 AFW Flow S/G 1                       Anchorage 163B WBN2                                                        > 0.5 283  LPF3 AFW Flow S/G 1                      Anchorage 163B WBN1                                                       > 0.5 284  LPF3 AFW Flow S/G 4                      Anchorage 170A Page B24
164


Watts Bar Nuclear Plant ESEP Report Item                                            Failure UNID      Description    Notes/Comments                HCLPF (g)
Chatter 1.4
  #                                              Mode WBN2                                                    > 0.5 285    LPF3  AFW Flow S/G 4                  Anchorage 170A WBN1    S/G WR Level                                    > 0.5 286                                            Anchorage LPL3111      Loop 4 WBN2    S/G WR Level                                    > 0.5 287                                            Anchorage LPL3111      Loop 4 WBN1  S/G NR Level Loop                                > 0.5 288                                            Anchorage LPL3148        3 WBN2  S/G NR Level Loop                                > 0.5 289                                            Anchorage LPL3148        3 WBN1  S/G NR Level Loop                                > 0.5 290                                            Anchorage LPL3156        2 WBN2  S/G NR Level Loop                                > 0.5 291                                            Anchorage LPL3156        2 WBN1  S/G NR Level Loop                                > 0.5 292                                            Anchorage LPL3164        1 WBN2  S/G NR Level Loop                                > 0.5 293                                            Anchorage LPL3164        1 WBN1  S/G NR Level Loop                                > 0.5 294                                            Anchorage LPL3171        4 WBN2  S/G NR Level Loop                                > 0.5 295                                            Anchorage LPL3171        4 WBN1    S/G WR Level                                    > 0.5 296                                            Anchorage LPL343      Loop 1 WBN2    S/G WR Level                                    > 0.5 297                                            Anchorage LPL343      Loop 1 WBN1    S/G WR Level                                    > 0.5 298                                            Anchorage LPL356      Loop 1 WBN2    S/G WR Level                                    > 0.5 299                                            Anchorage LPL356      Loop 2 WBN1    S/G WR Level                                    > 0.5 300                                            Anchorage LPL398      Loop 3 WBN2    S/G WR Level                                    > 0.5 301                                            Anchorage LPL398      Loop 3 WBN1                                                    > 0.5 302  LPL68    PZR Level                    Anchorage 335 WBN2                                                    > 0.5 303  LPL68    PZR Level                    Anchorage 335 Page B25


Watts Bar Nuclear Plant ESEP Report Item                                            Failure UNID      Description  Notes/Comments                HCLPF (g)
WattsBarNuclearPlantESEPReport
  #                                              Mode WBN0                                                    > 0.5 304                SFP Level                  Anchorage LPL7842 WBN1                                                    > 0.5 305  LPN92    Nuclear Flux                  Anchorage 131 WBN2                                                    > 0.5 306  LPN92    Nuclear Flux                  Anchorage 132 WBN1                                                    > 0.5 S/G Pressure Loop 307  LPP1                                  Anchorage 3
20A WBN2                                                    > 0.5 S/G Pressure Loop 308  LPP1                                  Anchorage 3
20A WBN1                                                    > 0.5 S/G Pressure Loop 309  LPP1                                  Anchorage 4
27B WBN2                                                    > 0.5 S/G Pressure Loop 310  LPP1                                  Anchorage 4
27B WBN1  S/G Pressure Loop                                > 0.5 311                                            Anchorage LPP12A          1 WBN2  S/G Pressure Loop                                > 0.5 312                                            Anchorage LPP12A          1 WBN1  S/G Pressure Loop                                > 0.5 313                                            Anchorage LPP19A          2 WBN2  S/G Pressure Loop                                > 0.5 314                                            Anchorage LPP19A          2 WBN1                                                    > 0.5 315  LPP68  RCS WR Pressure                Anchorage 68 WBN2                                                    > 0.5 316  LPP68  RCS WR Pressure                Anchorage 66 WBN1                                                    > 0.5 Containment 317 LPPD30                                  Anchorage Pressure 310 WBN2                                                    > 0.5 Containment 318 LPPD30                                  Anchorage Pressure 310 Page B26


Watts Bar Nuclear Plant ESEP Report Item                                           Failure UNID     Description   Notes/Comments               HCLPF (g)
PageB37 Item UNID Description Notes/Comments Failure Mode HCLPF(g) 443 WBN1 RLY046 RB1B Turb/MtrDriven AuxFWPump VlvsAuxRelay
  #                                              Mode WBN1                                                   > 0.5 Containment 319  LPT30                                  Anchorage Temperature 1032 WBN2                                                    > 0.5 Containment 320  LPT30                                  Anchorage Temperature 1032 WBN1  RCS WR Thot Loop                                  > 0.5 321                                          Anchorage LPT681        1 WBN2  RCS WR Thot Loop                                  > 0.5 322                                          Anchorage LPT681        1 WBN1                                                    > 0.5 RCS WR Tcold Loop 323  LPT68                                  Anchorage 1
18 WBN2                                                    > 0.5 RCS WR Tcold Loop 324  LPT68                                  Anchorage 1
18 WBN1                                                    > 0.5 RCS WR Tcold Loop 325  LPT68                                  Anchorage 2
41 WBN2                                                    > 0.5 RCS WR Tcold Loop 326  LPT68                                  Anchorage 2
41 WBN1                                                    > 0.5 RCS WR Tcold Loop 327  LPT68                                  Anchorage 3
60 WBN2                                                    > 0.5 RCS WR Tcold Loop 328  LPT68                                  Anchorage 3
60 WBN1                                                    > 0.5 RCS WR Tcold Loop 329  LPT68                                  Anchorage 4
83 WBN2                                                    > 0.5 RCS WR Tcold Loop 330  LPT68                                  Anchorage 4
83 WBN1  PORV AND AFW 331 PNL276 LCV STM GEN 3 &                  Anchorage        0.52 L1000      4 PNL WBN2  PORV AND AFW 332 PNL276 LCV STM GEN 3 &                  Anchorage        0.52 L1000      4 PNL Page B27


Watts Bar Nuclear Plant ESEP Report Item                                              Failure UNID      Description    Notes/Comments                HCLPF (g)
Chatter 1.4 444 WBN1 RLY046 RB2B TurbDrivenAux FWPumpVlvSEP Relay
  #                                                Mode WBN1  PORV AND AFW 333 PNL276 LCV STM GEN 1 &                    Anchorage        0.52 L1001        2 PNL WBN2  PORV AND AFW 334 PNL276 LCV STM GEN 1 &                    Anchorage        0.52 L1001        2 PNL WBN1        Incore 335 PNL094  Thermocouple                    Anchorage        0.52 0008AJ    Mon Sys Jbox WBN1        Incore 336 PNL094  Thermocouple                    Anchorage        0.52 0008BJ    Mon Sys Jbox WBN0 DPL360      480Volt 337                                            Functionality      0.68 0003A/1, Distribution Panel 3B/1 WBN0 DPL360    120/240 VAC 338                                            Functionality      0.68 0003A/2,    Panelboard 3B/2 WBN2      Hydrogen 339 DPL268    Mitigation                    Functionality      0.57 0002B  Distribution Panel WBN1       Hydrogen 340 DPL268    Mitigation                    Functionality      0.57 0001A  Distribution Panel WBN0 FUSD    480 V FLEX DG 341    360    Pump Fusible                    Functionality      0.57 DG/AP1,      Disc Switch BP1 WBN0 480V FLEX/ESBO DG360 342            225 KVA Diesel                  Functionality      0.57 000A, Generator 000B WBN0 DG360    6900V 3MW 343                                            Anchorage        0.87 0003A,  Diesel Generator 3B Page B28


Watts Bar Nuclear Plant ESEP Report Item                                              Failure UNID      Description    Notes/Comments                HCLPF (g)
Chatter 1.4 445 WBN1 RLY046 RBSS AFPTPump2 FCV151MtrDr Vlv2LCV3171&
  #                                                Mode WBN1 PMP  TD Aux Feedwater 344                                            Anchorage        0.59 003      Pump 1AS 0001AS WBN2 PMP  TD Aux Feedwater 345                                            Anchorage        0.59 003      Pump 2AS 0002AS WBN0 PMP Fuel Oil Transfer 346    360                                    Functionality      0.57 Pump DG/A1, B1 WBN1 347  PMP    HP FLEX Pump                    Functionality      0.5 360HP01 WBN2 348  PMP    HP FLEX Pump                    Functionality      0.5 360HP01 WBN1 349  PMP    FLEX IP PUMP 01                  Functionality      0.5 360IP01 WBN2 350  PMP    FLEX IP PUMP 01                  Functionality      0.5 360IP01 WBN1 351  PMP    FLEX IP PUMP 02                  Functionality      0.5 360IP02 WBN2 352  PMP    FLEX IP PUMP 02                  Functionality      0.5 360IP02 FCV SHARED AFW WBN1 TANK OUTLET 353 FCV003                                  Functionality      0.83 PIPE TO U1 6386 CONDENSATE FCV FOR AFW WBN2 Supply Tank 354 FCV003                                  Functionality      0.83 Outlet Piping to 6386 U2 Condensate WBN0      SFP HEAT 355 FCV070  EXCHANGER B                    Functionality      0.69 0194B      CCS SUPPLY Page B29
148


Watts Bar Nuclear Plant ESEP Report Item                                              Failure UNID        Description    Notes/Comments                HCLPF (g)
Chatter 1.4 446 WBN1 RLY046 SSTS AFPTSUPXfer FCV115,16&
  #                                                Mode WBN0        SFP HEAT 356 FCV070    EXCHANGER A                    Functionality      0.69 0197A      CCS SUPPLY WBN0  Sta Ser & Cntl Air 357 FCV067  Cmpr Supply Hdr                  Functionality      0.83 0205        A Isol valve WBN0  Sta Ser & Cntl Air 358 FCV067  Cmpr Supply Hdr                  Functionality      0.83 0208        B Isol valve WBN1 TD Aux Feedwater 359 FCV001      Pmp Trip &                    Functionality      0.7 051      Throttle Valve WBN2  TD Aux Feedwater 360 FCV001      Pmp Trip &                   Functionality      0.7 051      Throttle Valve WBN2    ERCW Header B 361 FCV003    TD AFW PMP                    Functionality      1.14 0179AB    SUCT (PS144)
51SepRelay
WBN2    ERCW Header A 362 FCV003    TD AFW PMP                    Functionality      1.14 0136AA    SUCT (PS139)
WBN2    ERCW Header A 363 FCV003    TD AFW PMP                    Functionality      1.14 0136BA          SUCT WBN2    ERCW Header B 364 FCV003    TD AFW PMP                    Functionality      1.14 0179BB          SUCT WBN1    ERCW Header A 365 FCV003    TD AFW PMP                    Functionality      1.14 0136AA    SUCT (PS139)
WBN1    ERCW Header A 366 FCV003    TD AFW PMP                    Functionality      1.14 0136BA          SUCT WBN1    ERCW Header B 367 FCV003    TD AFW PMP                    Functionality      1.14 0179AB    SUCT (PS144)
WBN1    ERCW Header B 368 FCV003    TD AFW PMP                    Functionality      1.14 0179BB          SUCT WBN1 CCS HX C SUP 369 FCV067                                    Functionality      0.92 FROM HDR 1A 0147A Page B30


Watts Bar Nuclear Plant ESEP Report Item                                            Failure UNID      Description  Notes/Comments                HCLPF (g)
Chatter 1.79 447 WBN1 STR046 0056AS TDAFW Trip/Throttle MotorStarter
  #                                              Mode WBN1 CCS HX C SUP 370 FCV067                                Functionality      0.92 FROM HDR 1B 0458A WBN1  N2 TANK NO. 1 371 TANK3  SUPPLY TO 1LCV                Anchorage        0.63 0402A      0030173B WBN1 N2 TANK NO. 1 TANK 372          SUP TO 1PCV                  Anchorage        0.63 001 0010012B 0405A WBN2 N2 TANK NO. 1 TANK 373          SUP TO 2PCV                  Anchorage        0.63 001 0010012B 0405A WBN1 N2 TANK NO. 2 TANK 374          SUP TO 1PCV                  Anchorage        0.63 001 0010012B 0405B WBN2 N2 TANK NO. 2 TANK 375          SUP TO 2PCV                  Anchorage        0.63 001 0010012B 0405B WBN1 N2 TANK NO. 1 TANK 376          SUP TO 1PCV                  Anchorage        0.63 001 0010030B 0406A WBN2 N2 TANK NO. 1 TANK 377          SUP TO 2PCV                  Anchorage        0.63 001 0010030B 0406A WBN1 N2 TANK NO. 2 TANK 378          SUP TO 1PCV                  Anchorage        0.63 001 0010030B 0406B WBN2 N2 TANK NO. 2 TANK 379          SUP TO 2PCV                  Anchorage        0.63 001 0010030B 0406B WBN1 N2 TANK NO. 1 TANK 380          SUP TO 1PCV                  Anchorage        0.63 001 0010023A 0407A Page B31


Watts Bar Nuclear Plant ESEP Report Item                                          Failure UNID      Description  Notes/Comments                HCLPF (g)
Functionality 0.57 448 WBN2 STR046 0056AS TDAFW Trip/Throttle MotorStarter
  #                                            Mode WBN2 N2 TANK NO. 1 TANK 381          SUP TO 2PCV1                Anchorage        0.63 001 0023A 0407A WBN1 N2 TANK NO. 2 TANK 382          SUP TO 1PCV                Anchorage        0.63 001 0010023A 0407B WBN2 N2 TANK NO. 2 TANK 383          SUP TO 2PCV1                Anchorage        0.63 001 0023A 0407B WBN1 N2 TANK NO. 1 TANK 384          SUP TO 1PCV                Anchorage        0.63 001 0010005A 0408A WBN2 N2 TANK NO. 1 TANK 385          SUP TO 2PCV                Anchorage        0.63 001 0010005A 0408A WBN1 N2 TANK NO. 2 TANK 386          SUP TO 1PCV                Anchorage        0.63 001 0010005A 0408B WBN2 N2 TANK NO. 1 TANK 387          SUP TO 2PCV                Anchorage        0.63 001 0010005A 0408B WBN2    N2 TANK NO. 1 388 TANK3 SUPPLY TO 2LCV                Anchorage        0.63 0402A    0030173B WBN1    N2 TANK NO. 2 389 TANK3 SUPPLY TO 1LCV                Anchorage        0.63 0402B    0030173B WBN2    N2 TANK NO. 2 390 TANK3 SUPPLY TO 2LCV                Anchorage        0.63 0402B    0030173B WBN1    N2 TANK NO. 1 391 TANK3 SUPPLY TO 1LCV                Anchorage        0.63 0402C    0030174B Page B32


Watts Bar Nuclear Plant ESEP Report Item                                          Failure UNID      Description  Notes/Comments                HCLPF (g)
Functionality 0.57 449 WBN1 FSV68 394 ReactorVessel HeadVent IsolationValve
  #                                            Mode WBN2    N2 TANK NO. 1 392  TANK3 SUPPLY TO 2LCV                Anchorage        0.63 0402C      0030174B WBN1   N2 TANK NO. 2 393  TANK3 SUPPLY TO 1LCV                Anchorage        0.63 0402D      0030174B WBN2    N2 TANK NO. 2 394 TANK3 SUPPLY TO 2LCV                Anchorage        0.63 0402D      0030174B WBN1    N2 TANK NO. 1 395  TANK3  SUP TO 1LCV                Anchorage        0.63 0403A      0030172A WBN2    N2 TANK NO. 1 396  TANK3  SUP TO 2LCV3                Anchorage        0.63 0403A        172A WBN1    N2 TANK NO. 2 397  TANK3  SUP TO 1LCV                Anchorage        0.63 0403B      003172A WBN2    N2 TANK NO. 2 398  TANK3  SUP TO 2LCV3                Anchorage        0.63 0403B        172A WBN1    N2 TANK NO. 1 399  TANK3  SUP TO 1LCV                Anchorage        0.63 0403C      0030175A WBN2    N2 TANK NO. 1 400  TANK3  SUP TO 2LCV3                Anchorage        0.63 0403C        175A WBN1    N2 TANK NO. 2 401  TANK3  SUP TO 1LCV                Anchorage        0.63 0403D      0030175A WBN2    N2 TANK NO. 2 402  TANK3  SUP TO 2LCV3                Anchorage        0.63 0403D        175A WBN0 AFW Supply Tank 403  TANK                                  Anchorage        0.51 500,000 gallons 0030226 WBN0 6900V 3MW FLEX TANK 404              DG Fuel Oil                Anchorage        0.66 360113, Storage Tank 213 Page B33


Watts Bar Nuclear Plant ESEP Report Item                                            Failure UNID      Description  Notes/Comments                HCLPF (g)
Screened
  #                                              Mode WBN1 TD Aux FW PMP 405 CLR003                                  Functionality        3 Oil Cooler 0001B WBN2 TD Aux FW PMP 406 CLR003                                  Functionality        3 Oil Cooler 0001B WBN2 Transfer Sw in 407 RLY046                                    Chatter          1.55 Aux Pos Isol Rly 0057S WBN2    B21 Relay AFPT 408 RLY046  Trip & Throttle                  Chatter          1.3 B002/1S    Vlv Photo Iso WBN2    B22 Relay AFPT 409 RLY046  Trip & Throttle                  Chatter          1.3 B002/2S    Vlv Photo Iso WBN2    B23 Relay AFPT 410 RLY046  Speed Control                    Chatter          1.55 B002/3S      Instr Pwr BA & BB Relay WBN2 AFPT Speed 411 RLY046                                    Chatter          1.79 Control Buffer BAS Relay WBN2    BA1 Relay AFPT 412 RLY046  Speed Control                    Chatter          1.79 BA1S          Buffer BA & BB Relay WBN2 AFPT Speed 413 RLY046                                    Chatter          1.79 Control Buffer BBS Relay WBN2 Aux FW Pump Vlv 414 RLY046                                    Chatter          1.4 Sep Relay R/AA WBN2 Aux FW Pump Vlv 415 RLY046                                    Chatter          1.4 Sep Relay R/BB WBN2 AFPT ACC Reset 416 RLY046                                    Chatter          1.79 Relay R1S WBN2 AFPT ACC Reset 417 RLY046                                    Chatter          1.79 Relay R2S Page B34
>0.5 450 WBN1 FSV68 397 ReactorVessel HeadVent ThrottleValve


Watts Bar Nuclear Plant ESEP Report Item                                          Failure UNID      Description  Notes/Comments              HCLPF (g)
Screened
  #                                            Mode WBN2    AFPT SUP Xfer 418 RLY046  FCV115,16 &                Chatter          1.79 R4A  51 Sep Relay TR A Aux Feed Pump WBN2 Trb Stm Supply 419 RLY046                                  Chatter          1.62 Xfer Sep Relay TR R5A A
>0.5 451 WBN2 FSV68 395 ReactorVessel HeadVent IsolationValve
WBN2    Turb/Mtr Driven 420 RLY046  Aux FW Pump                    Chatter          1.4 RA1A    Vlvs Aux Relay WBN2    Turb/Mtr Driven 421 RLY046 Aux FW Pump Vlv                  Chatter          1.4 RA2A      SSEP Relay AFPT Pump 2 WBN2 FCV151 Mtr Dr 422 RLY046                                  Chatter          1.4 Vlv 2LCV3156 &
RASS 164 WBN2   Turb/Mtr Driven 423 RLY046  Aux FW Pump                    Chatter          1.4 RB1B    Vlvs Aux Relay WBN2    Turb Driven Aux 424 RLY046 FW Pump Vlv SEP                  Chatter          1.4 RB2B          Relay AFPT Pump 2 WBN2 FCV151 Mtr Dr 425 RLY046                                  Chatter          1.4 Vlv 2LCV3171 &
RBSS 148 WBN2    AFPT SUP Xfer 426 RLY046  FCV115,16 &                Chatter          1.79 SSTS    51 Sep Relay WBN1 Transfer Sw in 427 RLY046                                  Chatter          1.55 Aux Pos Isol Rly 0057S WBN1    B21 Relay AFPT 428 RLY046  Trip & Throttle                Chatter          1.3 B002/1S    Vlv Photo Iso WBN1    B22 Relay AFPT 429 RLY046  Trip & Throttle                Chatter          1.3 B002/2S    Vlv Photo Iso WBN1    B23 Relay AFPT 430 RLY046  Speed Control                  Chatter          1.55 B002/3S      Instr Pwr Page B35


Watts Bar Nuclear Plant ESEP Report Item                                          Failure UNID        Description  Notes/Comments              HCLPF (g)
Screened
  #                                            Mode BA & BB Relay WBN1 AFPT Speed 431 RLY046                                  Chatter          1.79 Control Buffer BAS Relay WBN1    BA1 Relay AFPT 432 RLY046  Speed Control                  Chatter          1.79 BA1S        Buffer BA & BB Relay WBN1 AFPT Speed 433 RLY046                                  Chatter          1.79 Control Buffer BBS Relay WBN1 Aux FW Pump Vlv 434 RLY046                                  Chatter          1.4 Sep Relay R/AA WBN1 Aux FW Pump Vlv 435 RLY046                                  Chatter          1.4 Sep Relay R/BB WBN1 AFPT ACC Reset 436 RLY046                                  Chatter          1.79 Relay R1S WBN1 AFPT ACC Reset 437 RLY046                                  Chatter          1.79 Relay R2S WBN1    AFPT SUP Xfer 438 RLY046  FCV115,16 &                Chatter          1.79 R4A  51 Sep Relay TR A Aux Feed Pump WBN1 Trb Stm Supply 439 RLY046                                  Chatter          1.62 Xfer Sep Relay TR R5A A
>0.5 452 WBN2 FSV68 396 ReactorVessel HeadVent ThrottleValve
WBN1    Turb/Mtr Driven 440 RLY046  Aux FW Pump                    Chatter          1.4 RA1A    Vlvs Aux Relay WBN1    Turb/Mtr Driven 441 RLY046 Aux FW Pump Vlv                  Chatter          1.4 RA2A      SSEP Relay AFPT Pump 2 WBN1 FCV151 Mtr Dr 442 RLY046                                  Chatter          1.4 Vlv 2LCV3156 &
RASS 164 Page B36


Watts Bar Nuclear Plant ESEP Report Item                                              Failure UNID        Description  Notes/Comments                  HCLPF (g)
Screened
  #                                                Mode WBN1  Turb/Mtr Driven 443 RLY046    Aux FW Pump                      Chatter          1.4 RB1B    Vlvs Aux Relay WBN1    Turb Driven Aux 444 RLY046  FW Pump Vlv SEP                    Chatter          1.4 RB2B          Relay AFPT Pump 2 WBN1 FCV151 Mtr Dr 445 RLY046                                    Chatter          1.4 Vlv 2LCV3171 &
>0.5}}
RBSS 148 WBN1    AFPT SUP Xfer 446 RLY046  FCV115,16 &                    Chatter          1.79 SSTS      51 Sep Relay WBN1        TDAFW 447 STR046    Trip/Throttle                Functionality      0.57 0056AS    Motor Starter WBN2        TDAFW 448 STR046    Trip/Throttle                Functionality      0.57 0056AS    Motor Starter WBN1  Reactor Vessel                  Screened        > 0.5 449 FSV68  Head Vent 394      Isolation Valve 450  WBN1  Reactor Vessel                  Screened        > 0.5 FSV68  Head Vent 397      Throttle Valve 451  WBN2  Reactor Vessel                  Screened        > 0.5 FSV68  Head Vent 395      Isolation Valve 452  WBN2  Reactor Vessel                  Screened        > 0.5 FSV68  Head Vent 396      Throttle Valve Page B37}}

Latest revision as of 15:10, 10 January 2025

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  Tennessee Valley Authority icon.png
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)
v • d • e


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

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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.

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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.

WattsBarNuclearPlantESEPReport

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.

23.

NEI2013,PositionPaper:Shutdown/RefuelingModes.NuclearEnergyInstitute,September

2013.NRCADAMSNo.ML13273A514.

24.

RIZZO,R12,SeismicWalkdownofWattsBarNuclearPlantUnits1and2SeismicProbabilistic

RiskAssessmentProject,December22,2014.

25.

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

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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

WattsBarNuclearPlantESEPReport

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

WattsBarNuclearPlantESEPReport

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

WattsBarNuclearPlantESEPReport

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

WattsBarNuclearPlantESEPReport

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

WattsBarNuclearPlantESEPReport

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

WattsBarNuclearPlantESEPReport

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

WattsBarNuclearPlantESEPReport

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

WattsBarNuclearPlantESEPReport

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

WattsBarNuclearPlantESEPReport

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

WattsBarNuclearPlantESEPReport

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

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