View source for L-16-323, Spent Fuel Pool Evaluation Supplemental Report, Response to NRC Request for Information Pursuant to CFR 50.54(f) Regarding Recommendation 2.1 of the Near Term Task Force Review of Insights from Fukushima Dai-inchi Accident

{{Adams
| number = ML16344A010
| issue date = 12/09/2016
| title = Spent Fuel Pool Evaluation Supplemental Report, Response to NRC Request for Information Pursuant to CFR 50.54(f) Regarding Recommendation 2.1 of the Near Term Task Force Review of Insights from Fukushima Dai-inchi Accident
| author name = Brown T
| author affiliation = FirstEnergy Nuclear Operating Co
| addressee name = 
| addressee affiliation = NRC/Document Control Desk, NRC/NRR
| docket = 05000346
| license number = NPF-003
| contact person = 
| case reference number = CAC MF3728, CAC MF5238, L-16-323
| document type = Letter type:L, Response to Request for Additional Information (RAI)
| page count = 7
| project = CAC:MF3728, CAC:MF5238
| stage = Supplement
}}

=Text=
{{#Wiki_filter:FENOC-                                                                           Davis-8esseNuclear Pawer Station 5501N. StateRautaZ FirctErreryy NuclearOpnting hmpany                                                           Qak Harboc Ohio 43449 December9, 2016 L-16-323                                                            10cFR50.54(D ATTN: DocumentControlDesk U.S,NuclearRegulatory      Commission 11555Rockville     Pike Rockville,MD 2ABS?

==SUBJECT:==

Davis-Besse     NuclearPowerStation DocketNo.50-346,LicenseNo. NpF-3 ear-I=e[q Iisk Force(NTTH Reviewof tnsiontstrq (CACNos.MF3728and MF523g)
On March12,2A12,the NuclearRegulatory          Commission   (NRC)issueda Requestfor lformation     per 10 CFR 50,54(0(Reference1) to all powerreactorlicensees.
Enclosure1, ltem (9) of the 50.54(f)letterrequestedaddresseesto providelimited sgoPespentfuel pool(SFP)evaluations.By letterdatedOc'tober        27,2015 (Refepnce2), the NRCtransmittedfinalseismicinfonnationrequesttables,which identified  thatFirstEnergy  NuclearOperatingGompany{FENOC)is to conducta limited scopeSFPevaluationfor Davis-BesseNuclearPowerStation(DBNPS).By Reference3, NuclearEnergyInstitute(NEl)submittedan ElectricPowerResearch fnstitute(EPRf)reportentitled,SerbmicEvaluationGuidanceSpenf Fuel PaolIntegrity Evaluation(EPRI3002007148)         (Reference4), for NRCreviewand endo6ement.ltnC endorsement      was provided by ReferenceS.
EPRI3002007148        providescriteriafor evaluatingthe seismicadequacyof a SFPto the reevaluated    groundmotionresponsespectrum(GMRS)hazardlevels. Thisreport suppfementsthe guidancein the SeismicEvatuationGuidance,Screening,Prioritization and lmplementatianDefals (SPID)for the Resolutionof FukushimaNear-TermTask Force Recammendation       2.1: Ser.smic(Reference8) reportfor plantswherethe GMRS peakspectralacceleration     is lessthanor equalto 0.8g. Section3.3of EPRl 3002007148lists     the parametersto be verifiedto confirmthatthe resultsof the report are applicable   to DBNPS,andthatthe DBNPSSFP is seismically      adequatein accordance     withNTTF2.1 Seismicevaluation    criteria.

Davis-Besse  NuclearPowerStation L-16-323 Page2 The attachmentto this letterprovidesthe datafor DBNPSthat confirmsapplicabilityof the EPRI3002007148    criteria,confirmsthatthe SFP is seismically  adequate,and providesthe requestedinformationin responseto ltem (9) of the 50.54(f)letter associated with NTTFRecommendation       2.1 Seismicevaluation  criteria.
Thereare no new regulatory  commitments    containedin this letterandno revisionsto existingregulatory commitments.lf thereare any questionsor if additionalinfonnation is Pquired,pleasecontactMr.ThomasA. LenE,-Manager         - FleetLicensing,  at 330-315S810.
I declareunderpenaltyof perjurythatthe foregoingis trueandcorrect.Executedon Decemberq , 2016.
Perfornance lmprovement Attachment Site-SpecificSpentFuelPoofCriteriafor Davis-BesseNuclearPowerStation

==References:==
: 1. NRC Lefter,Requestfor Information      Pursuantto Title10 of the Codeof Federal Regulations 50.54(f)RegardingRecommendations      2.1, 2.3,and 9.3,of the Near-TermTaskForceReviewof Insightsfromthe FukushimaDalichiAccident,dated March12,2A12,Agencywide      Documents    Accessand Management       System (ADAMS)AccessionNumberML12053A940.
: 2. NRCLetter,FinalDetermination       of LicenseeSeismicProbabilistic   Risk Assessments   Underthe Requestfor Information    Pursuantto Title10 of the Code of FederalRegulations  50.54(0RegardingRecommendation         2.1 "seisrnic"of the Near-TermTask ForceReviewof Insightsfromthe Fukushima           Dai-ichiAccident, datedOctober27,2015,ADAMSAccessionNumberMLl5194A015.
: 3. NEI Letter,Requestfor Endorsement       of Seismic Evaluation  Guidance:SpenfFuel PoolIntegrityEvaluation(EPRI 3002007148),    datedFebruary23,2A16,ADAMS AccessionNumberMLIO05SA01        7.
: 4. EPRf Report3002007148,SelsmicEvaluatianGuidanceSpanfFuetPool Integrity Evaluation,February2016,ADAMSAccessionNumberML16055A021.

Davis-Besse   NuclearPowerStation L-16-323 Page3
: 5. NRCLetter,Endorsement   of ElectricPowerResearchInstituteReport 3002007148,  "SeismicEvaluationGuidance:SpentFuelPoolIntegrity Evaluation,"datedMarch17, 2016,ADAMSAccession        NumberML15350A158.
6 . FENOCLetter,FirstEnergy     NuclearOperating  Company    (FENOC)SeismicHazard andScreening   Report(CEUSSites),Response     to NRCRequestfor Information Pursuant to 10 CFR 50.54(0 Regarding Recommendation     2.1of the Near-Term TaskForce(NTTF)Reviewof Insightsfromthe Fukushima        Dai-ichiAccident, datedMarch31,2014,ADAMSAccessionNumberML14092A203.
7 . NRCLetter,Davis-Besse     NuclearPowerStation,Unit1 - StaffAssessment    of lnformation ProvidedPursuantto Title10 of the Codeof FederalRegulations   Part 50, Section50.54(0,SeismicHazardReevaluations     for Recommendation  2.1 of the Near-Term  TaskForceReviewof Insightsfromthe Fukushima      Dai-ichi Accident(TACNo.MF3728),     datedAugust25,2015,ADAMSAccessionNumber M115230A289.
8 . EPRIReport1025287,SeismicEvaluationGuidance,Screening,Prioritization         and lmplementationDetailsISPID]for the Resolution  of FukushimaNear-TermTask ForceRecommendation    2.1: Seismic,November2012,ADAMSAccession NumberM112333A170.
9 . FENOCLetter,FirstEnergy     NuclearOperating  Company(FENOC)Expedited SeismicEvaluation  Process(ESEP)Reports,Response      to NRCRequestfor Information Pursuantto 10 CFR50.54(f)Regarding    Recommendation   2.1of the Near-Term  TaskForce(NTTF)Reviewof Insightsfromthe Fukushima       Dai-ichi Accident,datedDecember    19,2014,ADAMS     Accession  Number  ML14353A059.
1 0 . NRCLetter,Davis-Besse   NuclearPowerStation,Unit1 - StaffReviewof Interim EvafuationAssociated withReevaluated  SeismicHazardlmplementing     Near-Term TaskForceRecommendation2.l      (TACNo.MF5238),     datedOctober19,2015, ADAMSAccessionNumberML15273A237.
cc: Director,  Officeof NuclearReactorRegulation  (NRR)
NRCRegionlll Administrator NRCResidentInspector NRRProjectManager UtilityRadiological SafetyBoard

ATTACHMENT FirstEnergy NuclearOperating  Company NuclearPowerStation Davis-Besse DocketNo.50-346 LicenseNo.NPF-3 Nuclear SpentFuelPoolCriteriafor Davis-Besse Site-Specific PowerStation

Attachment L-16-323 Page1 of 3 The 50.54(f)letter(Reference  1) requested   that,in conjunction   withthe response      to NTTF Recommendation     2.1,a seismicevaluation   be madeof the SFP. Morespecifically,           plants wereaskedto consider"allseismically     inducedfailuresthatcan      lead  to draining   of the SFP."Suchan evaluation     wouldbe neededfor anyplantin whichthegroundmotion responsespectrum(GMRS)exceedsthe safeshutdownearthquake                   (SSE)in the 1 to 10 Hz frequencyrange.Thestaffconfirmed        throughReferences       2 and7 thatthe GMRS exceedsthe SSEandconcluded       thata SFPevaluation       is meritedfor the FirstEnergy NuclearOperating    Company(FENOC,the licensee)        Davis-Besse     NuclearPowerStation (DBNPS).By letterdatedMarch17,2016(Reference              5),the staffdetermined      thatEPRI 3002007148    was an acceptable approach    for performing   SFPevaluations     for plants wherethe peakspectralacceleration     is lessthanor equalto 0.89.
Thetablebelowliststhe criteriafromSection3.3of EPRI3002007148                alongwithdatafor DBNPSthatconfirmsapplicability    of the EPRI3002007148        criteriaandconfirmsthatthe SFPis seismically  adequateandcan retainadequatewaterinventory             for 72 hoursin accordance   withNTTF2.1 Seismicevaluation      criteria.
SFPCriteriafrom EPRl3O02007t48          Sitepecific Data,,,
Site Parameters GMRSpeak 1 . Thesite-specific                    TheGMRSpeakspectralacceleration          in NTTF2.1 spectralacceleration at any           SeismicHazardandScreeningReportDavis-Besse frequencyshouldbe lessthanor        NuclearPowerStationOttawaCounty,Ohio(Reference equalto 0.89.                       6), as acceptedby the NRCin Davis-Besse        NuclearPower Station,Unit1 StaffAssessment       of Information  Provided Pursuantto Title10 of the Codeof FederalRegulations Part50,Section50.54(f),    SeismicHazardReevaluations for Recommendation    2.1 of the Near-Term    TaskForce Reviewof InsightsFromthe Fukushima         Dai-ichi Accident (TACNo. MF3728)(Referen       ce 7), hasbeensuperseded by the FirstEnergy  NuclearOperating    Company(FENOC)
Expedited  SeismicEvaluation    Process(ESEP)Reports, Response   to NRCRequestfor Information       Pursuant  to 10 CFR50.54(0Regarding       Recommendation2.l       of the Near-Term   TaskForce(NTTF)Reviewof Insightsfromthe Fukushima   Dai-ichi Accident(Reference     9), as accepted by the NRCin letterDavis-Besse     NuclearPowerStation, Unit1 - StaffReviewof InterimEvaluation      Associated   with Reevaluated   SeismicHazardlmplementing        Near-Term TaskForceRecommendation         2.1 (Reference   10),is 0.549, whichis 0.89;therefore,    this criterion is met.
StructuralParameters
: 2. Thestructure  housingthe SFP         TheSFPis housedin theauxiliary       building, whichis shouldbe designed usingan SSE       seismically designed  to the siteSSEwitha PGAof 0.159 witha peak ground acceleration      perUSARSection3.2.1.TheDBNPSPGAis greaterthan (PGA)of at least0.19.               0.1g;therefore,  thiscriterionis met.

Attachment L-16-323 Page2 of 3 SFPGriteriafrom EPRI3002007148             Sitepecific Data
: 3. Thestructural  loadpathto the SFP       TheSFPis housedin Auxiliary         Building, Area8, whichis shouldconsistof somecombination         constructed  of steelframing,reinforced      concrete(RC) of reinforced concreteshearwall         walls,roofsandfloors[Ref.Drawings          C-202andC-230].
elements,reinforced    concreteframe    Theexteriorwallsof the SFPare5 ft. 6 in.thickRCwalls.
elements, post-tensioned    concrete    TheSFPflooris a 5 ft. thickRCslab. Thestructural          load elementsand/orstructural      steel     pathfromthe SFPto the foundationconsistsof 5 ft 6 in.
frameelements.                          thickRCwallsat the boundary        of the poolandalsoby several2 ft. to 3 ft. thickintermediate    bearingwallsof 13ft. 6 in. height.Thefoundation is a 3 ft. thickRC mat slabthatbearson bedrock.Therefore,           thiscriterionis met for DBNPS.
: 4. TheSFPstructure     shouldbe            TheSFPstructure      is includedin the DBNPSStructures included in theCivillnspection          Monitoring  Programin accordance        with10 CFR50.65, Programperformed      in accordance     whichmonitors    the performance     or condition  of structures, withMaintenance    Rule.                systems,  or components     (SSCs)in a mannersufficient       to providereasonable      assurance   that these  SSCs   are capableof fulfilling  theirintended   functions  [Ref.
Procedure   EN-DP-O15111.      Therefore,   thiscriterionis met for DBNPS.
Non-StructuralParameters
: 5. To confirmapplicability   of the piping All pipingattached    to the SFPis seismically    qualifiedto evaluation in Section3.2of EPRI         SSEin accordance       withUSARSection9.1.3.11,        except 3002007148,    pipingattached    to the fivesmallborelinesandan overfillline. Theselinesare SFPup to thefirstvalveshouldhave        locatedapproximately      20 ft. abovethe top of activefuel beenevaluated    for the SSE.           and provideapproximately       147hoursbeforeuncovering the spentfuelandapproximately         178hoursbeforethetop 113of the spentfuelpoolis uncovered        perABSConsulting calculation 2734296-C-1    34, Revision    0.
Section3.2of EPRI3002007148           is focusedon the rapid drainingof the SFPsuchthatthereis an uncovering            of morethan 113of the spentfuelheightwithin72 hours.
Withgreaterthan72 hoursavailable,          thereis no concern of rapiddraindown;therefore,       the intent of thiscriterion is metfor DBNPS.

Attachment L-16-323 Page3 of 3 SFPCriteriafrom',EPRI3002007148          Sitepecific Data
: 6. Anti-siphoning devicesshouldbe        No anti-siphoning devicesareused. Pipingdesignis such installedon anypipingthatcould                             to siphonthe spentfuelpoolwater thatit is not possible leadto siphoning waterfromthe         leveldownas the   resultof a failedpipeor component    to a SFP. In addition, for anycases        waterlevelbelowI ft. 6 in. abovethetop of the    spent fuel whereactiveanti-siphoning    devices  rack[Ref.USARSection9.1.2.3].Thislevelprovides areattached  to 2-inchor smaller      adequate   shieldingandcoolingof the spentfuelsystem.
pipingandhaveextremely      large     Sincethe pipingof the SFPcoolingsystemcannotleadto extendedoperators,   the valves       rapiddraindowndueto siphoning;      thiscriterionis metfor shouldbe walkeddownto confirm         DBNPS.
adequatelateralsupport.                                                devicesareattached   to As described,  no anti-siphoning Z-in.or smaller pipingwith extremely  large extended operators;           thiscriterionis satisfiedfor DBNPS.
therefore,
: 7. To confirmapplicability of the        The DBNPSSFPis partof multipleinterconnected        pools, sloshingevaluation  in Section3.2of   alongwiththefueltransfer   pool  andthe cask   pit.
EPRI3002007148,     themaximum        Combined,    thesepoolshavea lengthof lessthan20 ft.,a SFPhorizontal  dimension   (lengthor  widthlessthan53 ft.,anda depthof 39ft. 6 in. basedon width)shouldbe lessthan 125ft.,       drawingC-0247;therefore,    thiscriterionis met.
the SFPdepthshouldbe greater          The DBNPSGMRSmaximumspectralacceleration             in the than36 ft, andthe GMRSpeakSa          frequency   rangelessthan0.3 Hz is 0.029fromthe shouldbe <0.19at frequencies    equal FirstEnergy   NuclearOperating  Company(FENOC) to or lessthan0.3 Hz.                 Expedited   SeismicEvaluation  Process(ESEP)Reports, Response    to NRCRequestfor Information    pursuant to 10 CFR50.54(0Regarding      Recommendation     2.1of the Near-TermTaskForce(NTTF)Reviewof Insightsfromthe Fukushima           Accident(Reference Dai-ichi                     9),whichis less than0.19;therefore,  thiscriterionis met.
: 8. To confirmapplicability of the        Thesurfaceareaof the DBNPSSFPproperis 1,056.96ft2 evaporation lossevaluation   in       basedon drawingC-0247andUSARSection9.1.3.3, Section3.2of EPRI3002007148,          whichis greaterthan500ft2;andlicensedreactorthermal the SFPsurfaceareashouldbe            powerfor DBNPSis 2,817MWt[Ref.USARSection1] per greaterthan500ft2andthe licensed      unit,whichis lessthan4,000MWtperunit;therefore, reactorcorethermalpowershould         thesecriteriaare met.
be lessthan4,000MWtperunit.}}