Letter Sequence Response to RAI |
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Category:Letter type:L
MONTHYEARL-23-260, Corrections to the 2022 Combined Annual Radiological Environmental Operating Report and Radioactive Effluent Release Report for the Davis-Besse Nuclear Power Station2023-12-0707 December 2023
Corrections to the 2022 Combined Annual Radiological Environmental Operating Report and Radioactive Effluent Release Report for the Davis-Besse Nuclear Power Station
L-23-243, Independent Spent Fuel Storage Installation - Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation2023-12-0606 December 2023
Independent Spent Fuel Storage Installation - Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation
L-23-215, Changes to Emergency Plan2023-10-19019 October 2023
Changes to Emergency Plan
L-23-205, Supplement to Application for Order Consenting to Transfer of Licenses and Conforming License Amendments2023-09-12012 September 2023
Supplement to Application for Order Consenting to Transfer of Licenses and Conforming License Amendments
L-23-172, Quality Assurance Program Manual2023-08-31031 August 2023
Quality Assurance Program Manual
L-23-188, Energy Harbor Nuclear Corp., Supplement to Application for Order Consenting to Transfer of Licenses and Conforming License Amendments2023-08-0707 August 2023
Energy Harbor Nuclear Corp., Supplement to Application for Order Consenting to Transfer of Licenses and Conforming License Amendments
L-23-175, Submittal of Fifth Ten Year Inservice Testing Program2023-08-0101 August 2023
Submittal of Fifth Ten Year Inservice Testing Program
L-23-034, 2022 Annual 10 CFR 50.46 Report of Changes to or Errors in Emergency Core Cooling System Evaluation Models2023-06-13013 June 2023
2022 Annual 10 CFR 50.46 Report of Changes to or Errors in Emergency Core Cooling System Evaluation Models
L-23-135, Response to Regulatory Issue Summary 2023-01, Preparation and Scheduling of Operator Licensing Examinations2023-05-31031 May 2023
Response to Regulatory Issue Summary 2023-01, Preparation and Scheduling of Operator Licensing Examinations
L-23-065, Annual Financial Report2023-05-22022 May 2023
Annual Financial Report
L-23-131, Readiness for Resumption of NRC Supplemental Inspection2023-05-12012 May 2023
Readiness for Resumption of NRC Supplemental Inspection
L-23-101, Combined Annual Radiological Environmental Operating Report and Radioactive Effluent Release Report for the Davis-Besse Nuclear Power Station - 20222023-05-12012 May 2023
Combined Annual Radiological Environmental Operating Report and Radioactive Effluent Release Report for the Davis-Besse Nuclear Power Station - 2022
L-23-092, Occupational Radiation Exposure Report for Year 20222023-04-27027 April 2023
Occupational Radiation Exposure Report for Year 2022
L-23-061, Submittal of the Decommissioning Funding Status Reports2023-03-31031 March 2023
Submittal of the Decommissioning Funding Status Reports
L-23-037, and Perry Nuclear Power Plant - Independent Spent Fuel Storage Installation Changes, Tests, and Experiments2023-03-29029 March 2023
and Perry Nuclear Power Plant - Independent Spent Fuel Storage Installation Changes, Tests, and Experiments
L-23-066, Annual Notification of Property Insurance Coverage2023-03-21021 March 2023
Annual Notification of Property Insurance Coverage
L-23-059, Response to Apparent Violation in NRC Inspection Report 05000346/2022091; EA 23-0022023-03-0909 March 2023
Response to Apparent Violation in NRC Inspection Report 05000346/2022091; EA 23-002
L-22-212, CFR 50.55a Request RP-5 Regarding Inservice Pump Testing2023-03-0606 March 2023
CFR 50.55a Request RP-5 Regarding Inservice Pump Testing
L-23-048, Response to Request for Additional Information Regarding Technical Specification 5.6.6 Steam Generator Tube Inspection 180-Day Report2023-03-0101 March 2023
Response to Request for Additional Information Regarding Technical Specification 5.6.6 Steam Generator Tube Inspection 180-Day Report
L-23-057, Energy Harbor Nuclear Corp Retrospective Premium Guarantee2023-02-20020 February 2023
Energy Harbor Nuclear Corp Retrospective Premium Guarantee
L-22-253, Submittal of Pressure and Temperature Limits Report, Revision 52023-01-10010 January 2023
Submittal of Pressure and Temperature Limits Report, Revision 5
L-22-284, Request for Notice of Enforcement Discretion for Technical Specification 3.7.9, Ultimate Heat Sink (UHS)2022-12-28028 December 2022
Request for Notice of Enforcement Discretion for Technical Specification 3.7.9, Ultimate Heat Sink (UHS)
L-22-211, Technical Specification 5.6.6 Steam Generator Tube Inspection 180-Day Report2022-09-29029 September 2022
Technical Specification 5.6.6 Steam Generator Tube Inspection 180-Day Report
L-22-216, Submittal of Pressure and Temperature Limits Report. Revision 42022-09-27027 September 2022
Submittal of Pressure and Temperature Limits Report. Revision 4
L-22-213, Occupational Radiation Exposure Report for Year 2021 - Correction2022-09-23023 September 2022
Occupational Radiation Exposure Report for Year 2021 - Correction
L-22-129, Submittal of the Updated Final Safety Analysis Report, Revision 342022-09-20020 September 2022
Submittal of the Updated Final Safety Analysis Report, Revision 34
L-22-194, Submittal of Supplemental Information for the Reanalysis for Protection Against Low Temperature Reactor Coolant System Overpressure Events2022-09-19019 September 2022
Submittal of Supplemental Information for the Reanalysis for Protection Against Low Temperature Reactor Coolant System Overpressure Events
L-22-203, Submittal of Evacuation Time Estimates2022-09-12012 September 2022
Submittal of Evacuation Time Estimates
L-22-050, Summary of Changes to the Energy Harbor Nuclear Corp. Quality Assurance Program Manual2022-08-0909 August 2022
Summary of Changes to the Energy Harbor Nuclear Corp. Quality Assurance Program Manual
L-22-152, Response to Request for Additional Information Regarding a License Amendment Request That Revises the Davis-Besse Nuclear Power Station Emergency Plan2022-07-0505 July 2022
Response to Request for Additional Information Regarding a License Amendment Request That Revises the Davis-Besse Nuclear Power Station Emergency Plan
L-22-068, Cycle 22 and Refueling Outage 22 Inservice Inspection Summary Report2022-06-30030 June 2022
Cycle 22 and Refueling Outage 22 Inservice Inspection Summary Report
L-22-037, 2021 Annual 10 CFR 50.46 Report of Changes to or Errors in Emergency Core Cooling System Evaluation Models2022-06-30030 June 2022
2021 Annual 10 CFR 50.46 Report of Changes to or Errors in Emergency Core Cooling System Evaluation Models
L-22-149, Post Accident Monitoring Report2022-06-23023 June 2022
Post Accident Monitoring Report
L-22-153, Readiness for NRC Supplemental Inspection Required for a White Finding2022-06-22022 June 2022
Readiness for NRC Supplemental Inspection Required for a White Finding
L-22-098, Withdrawal of Proposed Inservice Inspection Alternative RR-A22022-06-22022 June 2022
Withdrawal of Proposed Inservice Inspection Alternative RR-A2
L-22-136, Steam Generator Tube Circumferential Crack Report - Spring 2022 Refueling Outage2022-06-0707 June 2022
Steam Generator Tube Circumferential Crack Report - Spring 2022 Refueling Outage
L-22-102, Report of Facility Changes, Tests, and Experiments2022-05-16016 May 2022
Report of Facility Changes, Tests, and Experiments
L-22-092, Combined Annual Radiological Environmental Operating Report and Radiological Effluent Release Report for the Davis-Besse Nuclear Power Station - 20212022-05-16016 May 2022
Combined Annual Radiological Environmental Operating Report and Radiological Effluent Release Report for the Davis-Besse Nuclear Power Station - 2021
L-22-124, Response to Request for Additional Information Regarding License Amendment Request to Revise the Design Basis for the Shield Building2022-05-12012 May 2022
Response to Request for Additional Information Regarding License Amendment Request to Revise the Design Basis for the Shield Building
L-22-047, Unit No.1 - Core Operating Limits Report, Cycle 23, Revision O and Revision 12022-05-10010 May 2022
Unit No.1 - Core Operating Limits Report, Cycle 23, Revision O and Revision 1
L-22-127, Readiness for NRC Supplemental Inspection Required for a Greater than Green Finding2022-05-0606 May 2022
Readiness for NRC Supplemental Inspection Required for a Greater than Green Finding
L-22-089, Occupational Radiation Exposure Report for Year 20212022-04-12012 April 2022
Occupational Radiation Exposure Report for Year 2021
L-22-056, Energy Harbor Nuclear Corp., Annual Notification of Property Insurance Coverage2022-03-22022 March 2022
Energy Harbor Nuclear Corp., Annual Notification of Property Insurance Coverage
L-22-059, Response to Request for Additional Information on Proposed Inservice Test Alternative RP-32022-03-21021 March 2022
Response to Request for Additional Information on Proposed Inservice Test Alternative RP-3
L-22-074, Response to Regulatory Issue Summary 2022-01, Preparation and Scheduling of Operator Licensing Examinations2022-03-15015 March 2022
Response to Regulatory Issue Summary 2022-01, Preparation and Scheduling of Operator Licensing Examinations
L-22-061, Ile Post Exam Letter L-22-0612022-02-24024 February 2022
Ile Post Exam Letter L-22-061
L-22-023, Retrospective Premium Guarantee2022-02-17017 February 2022
Retrospective Premium Guarantee
L-21-266, Response to Request for Additional Information on Proposed Inservice Inspection Alternative RR-A22022-01-27027 January 2022
Response to Request for Additional Information on Proposed Inservice Inspection Alternative RR-A2
L-20-289, Emergency Plan Amendment Request2022-01-19019 January 2022
Emergency Plan Amendment Request
L-21-290, Response to NRC Inspection Report 05000346/2021091, EA-21-1762021-12-21021 December 2021
Response to NRC Inspection Report 05000346/2021091, EA-21-176
2023-09-12
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FENOC 5501 Notth Slata Rwte 2 OakHartuc Ohlo43449 fl rctEnergyNucleaOperatlngConpany 8uty8,Nen VicePresident - Nuclear
,*,Xi!"#',-it{f, February 13,2412 L-12-055 10cFR 50.a6(aX3Xii)
ATTN:Document ControlDesk U.S.Nuclear Regulatory Commission Washington, DC20555-0001
SUBJECT:
Davis-Besse NuclearPowerStation DocketNo.50-346,LicenseNo.NPF-3 Response to ReouesiforAdditional Informationon 10 CFR50.46Reportof Chanoes9r ECesEvaluationW AccessandManagement system By letterdatedMay27,2011(Agencywide_Documents (nOnUS)Accession No.ML1tl-5fi6q4, FirstEnergy NuclearOperating Company theannualreportforchanges anderrorsin anemergency core iff5fOCisubmitted of sucha model'for coolingsystem {ECCS)evaluation tnoO"f iiMl, ot intheapplication the Davis-Besse NuclearpowerStation.ine reportcovered the periodfrom January 1,2A10to December 31,2010.
18, 2012,the Nuclear Regulatory Commission (NRC)requested additional OnJanuary discussed with information ,.gurdin;'thisreport.FEl.iOC'ti"tponseto the request, as NRCstaffon December 19,2011,is attached.
Thereareno regulatory commitments contained inthisletter.lf thereareanyquestions -
or if additional informrtion pleasecontactMr.PhilH.Lashley, is required, Supervisor FleetLicensing, at (330)315-6808.
Sincerely,
,t*,--1 5,4e'-
BarryS. Allen
Attachment:
Response to Requestfor AdditionalInformation on the 10 CFR50'46nep{ of Cianges or Errorsin the emuigencyCoreCoJtingSystemEvaluation Modelfor the Davis-Besse NuclearPowerStatlon cc: NRCRegionlll Administrator NRCResidentInsPector NuclearReactorRegulation ProjectManager UtilityRadiological Safety Board
Attachment L-12-055 Response to Requestfor Additional Information on the 10 CFR50.46Reportof Changesor Errorsin the Emergency CoreCoolingSystemEvaluatlonModelforthe Davis-Besse NuclearPowerStation Page1 ot2 By fetterdatedMay27,2011(Agencyruide Documents Accessand Management System(ADAMS)Accessionlrto.wtt-i11510642), FirstEnergy NuclearOperating Cbmpany(FENOC)submitted the annualreportfor changesa1d errorsin an emergencycorecoolingsystem(ECCS)evaluationmodel(Elr4),-o1.in the applicationof sucha model,for the Dlvis-BesseNuclearPowerStation(DBNPS),On January18,2i.A12, the NuclearRegulatory Commission (NRC)requested additional informationregardingthis report. lne ruRCstaff'srequestis presentedin boldtype' followedby FENOC'sresponse.
ln Table1, "10 CFR50.46Summaryfor 2010,"lt is notedthat peakcladding temperaturesfor Mk.B.HTPfuel Inihe mixed-coreand full'core large'breakloss' of-coolantaccident(LBLOCA)evaluationmodelsare "estlmated"per Evaluation ModelRevision0.9. Pleaseciarifywhy thesespecificpeakcladdingtemperatures are ,,estimated" and not "analyzed"slmilarto the othervaluesin the table' FENOCbeganinserting the newMk-B-HTP fuelassemblV de191intothe DBNPS reactorin Cycle15,whichbeganin April2006.The originalL-BLO.CAenalyses for peak claddingtemperature (PCT)f6r the transitioncoresandthe Mk-B-HTPfull-corewere pefformedpriorto cycle ts. nt thattime,analyzedLBLOCAPCTvaluesof 2095'3"F lMk-a-Hrp mixed-core) and 2117.2'F(Mr<-g-FifP full-core)werereportedto FENOC by the fuelvendor, By letterdatedMay25,,2007 (ADAMSAccesslonNo,ML071500391), FENOC submittedthe 2006annualreportof changesto the 10 CFR50'46ECCSEM'which inctudedtho anaryzed LBLocA pcr vatu6of 209s"F(rou{gd-downfrom2095.3"F) for the Mk-B-HTpmixed-core.Sincea fullcoreof the Mk-B-HTP fuelwould not be achleveduntilcycle 17 in 2010,a full-coreLBLOCA PCT value was not includedin the 2006through2009reports.
By letterdatedMay28, 2008(ADAMSAccession No.ML081540470), FENOC submittedthe 2oai annualreportof changesto the 10 cFR 50.46Eccs EM,including the effectof an EM applicationerrorfor tG Mk'B-HTPmixed'coreresults' The error, as explainedin the ZilOlreport,was an inconectinterpretation of gqmTa energy fractionsreportedfromthe bnlCeruZcomputercode. Thiswas evaluatedby the FENOCfuelvendorandwasfoundto causean increasein the Mk-B-HTP mixed-core pCT valueof +Z.TiF,leading to the final2007reportedvalueof 2098'F(rnixed'core).
shownin Table1 of that letter. However,the valuewas reportedas "analyzed" when,in fact,it was "estimated" by the FENOCfuelvendor,as requiredby 10 CFR50.46(aX3Xi). ln ttre2009report,submitted by letterC.atgdMay27' 2010 (ADAMSnccebdibn'No. ML101530497), the valueswerereportedcorrectly as "estimated,"
Attachment L-12-055 Page2 of 2 In 2010,whenthe fullcoreof Mk-B-HTP assemblies wasachieved,a PCTvaluefor the Mk-B-HPT full-coreLBLOCAwas includedin the annualreport,submitted by the May27,2011letter.Thegammaenergyfractionerrornotedin the 20OTreportalso affectedthe Mk-B-HTPfull-coreLBLOCAPCTvalue. The magnitudeof the errorwas estimated as +1.8oFfor the Mk-B-HTPfull-corethatyieldedan estimatedPCTof 2119"Fwhenaddedto the 2117.2'F full-coreanalyzedvalue,Subsequently, in the May27,2011letter,FENOCreportedthe 2119oFestimated value beingutilizedat that timeratherthanthe originalanalyzedvalueof 2117.2"F.
