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MONTHYEARML12363A1322008-08-15015 August 2008 Information Request Pursuant to 10 CFR 50.54(f) Related to External Flooding, Including Failure of the Jocassee Dam at Oconee Nuclear Station, Units 1, 2, and 3 Project stage: Other ML0816402442008-08-15015 August 2008 Information Request Pursuant to 10 CFR 50.54(F) Related to External Flooding, Including Failure of the Jocassee Dam at Oconee Nuclear Station, Units 1, 2, and 3 Project stage: Other ML0823906902008-08-26026 August 2008 Letter Kick Off for Risk Analysis of the Failure of the Jocassee and Keowee Dams to Assess the Potential Effects on the Safe Shutdown Facility at the Oconee Nuclear Station Project stage: Other ML0823906692008-08-26026 August 2008 E-mail Oconee Nuclear Station - Kick Off for Risk Analysis of the Failure of the Jocassee and Keowee Dams to Assess the Potential Effects on the Safe Shutdown Facility of ONS Project stage: Other ML0822501662008-09-0909 September 2008 Communication Plan for Information Request Related to Failure Frequencies for the Jocassee Pumped Storage Dam (Jocassee Dam) at the Oconee Nuclear Station and Potential Generic Implications Project stage: Other ML13121A3262008-09-0909 September 2008 Communication Plan for Information Request Pursuant to 10 CFR 50.54(f) Related to External Flooding, Including Failure of the Jocassee Dam, at Oconee Nuclear Station, Units 1, 2, and 3 Project stage: Other ML12326A3892008-09-0909 September 2008 Memorandum from E. Leeds, NRR to V. Ordaz, EDO on Communication Plan for Information Request Pursuant to 10 CFR 50.54(f) Related to External Flooding, Including Failure of the Jocassee Dam Project stage: Other ML0827501062008-09-26026 September 2008 Response to 10 CFR 50.54(f) Request Project stage: Other ML12363A1292008-09-26026 September 2008 Response to 10 CFR 50.54(f) Request Project stage: Other ML0833004272008-12-16016 December 2008 Summary of Closed Meeting to with Duke Energy Carolinas, LLC to Discuss the August 15, 2008, 50.54(f) Letter on External Flooding Project stage: Meeting ML0906807372009-03-13013 March 2009 Summary of Closed Meeting to Discuss the Duke Energy Carolinas, Llc., 09/26/08 Response to Nrc'S, August 15, 2008 50.54(f) Letter on External Flooding at Oconee Project stage: Meeting ML0911701042009-04-0606 April 2009 Non-concurrence on Evaluation of Duke Energy Carolinas, LLC September 26, 2008, Response to Nuclear Regulatory Commission Letter Dated August 15, 2008 Related to External Flooding Project stage: Acceptance Review ML0908204702009-04-22022 April 2009 Notice of Forthcoming Closed Meeting with Duke Energy Carolinas, LLC, to Discuss Sensitivity Studies Concerning Failure of the Jocassee Dam & Resultant Flooding at the Oconee Nuclear Station, Unit 1, 2, & 3 Project stage: Meeting ML12363A1332009-04-30030 April 2009 Evaluation of Duke Energy Carolina September 26, 2008, Response to 10 CFR 50.554(f), Letter Dated August 15, 2008, Related to External Flooding, Including Failure of the Jocassee Dam Project stage: Other ML0913804242009-05-11011 May 2009 Slides for Closing Meeting May 11, 2009 with Duke on the Oconee Flooding Issue Project stage: Request ML0914203192009-06-0101 June 2009 Meeting Summary, Meeting to Discuss External Flooding at Oconee Nuclear Station (Reissuance, with Error on Page 3 Corrected) Project stage: Meeting ML0910607612009-06-18018 June 2009 Summary of Closed Meeting with Duke on External Flooding Issues, Including Failure of the Jocassee Dam, at Oconee Nuclear Station, Units 1, 2, and 3 Project stage: Meeting ML0916206692009-07-0909 July 2009 Summary of Closed Meeting with Duke Carolina to Discuss External Flooding at Oconee Project stage: Meeting ML0929407692009-11-10010 November 2009 Summary of Closed Meeting with Duke Energy Carolinas, LLC, to Discuss Preliminary Results of the Recent Inundation and Sensitivity Studies Concerning Failure of the Jocassee Dam and Resultant Flooding at Oconee Nuclear Station, 1, 2, and 3 Project stage: Meeting ONS-2016-001, Transmittal of Supplemental Information Regarding NRC 2008 and 2012 Requests for Information, Pursuant to 10 Cer 50.54(f) Pertaining to External Flooding - Revision 12016-01-0808 January 2016 Transmittal of Supplemental Information Regarding NRC 2008 and 2012 Requests for Information, Pursuant to 10 Cer 50.54(f) Pertaining to External Flooding - Revision 1 Project stage: Supplement 2009-04-22
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MONTHYEARML23304A1422024-02-0101 February 2024 Issuance of Environmental Scoping Summary Report Associated with the U.S. Nuclear Regulatory Commission Staffs Review of the Oconee Nuclear Station, Units 1, 2, & 3, Subsequent License Renewal Application ML24005A2492024-01-24024 January 2024 Exemption from Select Requirements of 10 CFR Part 73 (Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting) IR 05000269/20243012024-01-11011 January 2024 Notification of Licensed Operator Initial Examination 05000269/2024301, 05000270/2024301, and 05000287/2024301 ML23331A7982023-12-14014 December 2023 Review of the Fall 2022 Steam Generator Tube Inspection Report (01R32) ML23262A9672023-12-13013 December 2023 Alternative to Use RR-22-0174, Risk-Informed Categorization and Treatment for Repair/Replacement Activities in Class 2 and 3 Systems Section XI, Division 1 IR 05000269/20230032023-11-14014 November 2023 Integrated Inspection Report 05000269/2023003, 05000270/2023003, and 05000287/2023003; and IR 07200040/2023001; and Exercise of Enforcement Discretion ML23317A3462023-11-14014 November 2023 Duke Fleet - Correction Letter to License Amendment Nos. 312 & 340 Issuance of Amendments Regarding the Adoption of Technical Specifications Task Force Traveler TSTF-554, Revision 1 ML23219A1402023-10-10010 October 2023 Audit Report Proposed Alternative to Use ASME Code Case N-752, Risk Informed Categorization and Treatment for Repair/Replacement Activities in Class 2 and 3 Systems XI, Division 1 ML23269A1102023-10-0606 October 2023 Letter to Steven Snider-Revised Schedule for the Environmental Review of the Oconee Nuclear Station, Unit 1, 2, and 3, Subsequent License Renewal Application ML23256A0882023-09-25025 September 2023 Issuance of Alternative to Steam Generator Welds ML23195A0782023-08-29029 August 2023 Issuance of Amendments Regarding the Adoption of Technical Specifications Task Force Traveler TSTF-554, Revision 1 IR 05000269/20230112023-08-25025 August 2023 Comprehensive Engineering Team Inspection Report 05000269/2023011 and 05000270/2023011 and 05000287/2023011 IR 05000269/20230052023-08-25025 August 2023 Updated Inspection Plan for Oconee Nuclear Station Units 1, 2 and 3 (Report 05000269/2023005, 05000270/2023005, and 05000287/2023005) IR 05000269/20230022023-07-28028 July 2023 Integrated Inspection Report 05000269/2023002, 05000270/2023002 and 05000287/2023002 ML23208A0972023-07-27027 July 2023 Subsequent License Renewal List of Threatened and Endangered Species That May Occur in Your Proposed Project Location or May Be Affected IR 05000269/20230102023-07-19019 July 2023 Biennial Problem Identification and Resolution Inspection Report 05000269/2023010 and 05000270/2023010 and 05000287/2023010 and Notice of Violation ML23178A0682023-07-0303 July 2023 Audit Plan Proposed Alternative to Use ASME Code Case N-752, Risk-Informed Categorization and Treatment for Repair/Replacement Activities in Class 2 & 3 Systems Section XI, Division 1 ML23132A2392023-06-0101 June 2023 Summary of the April 2023 Remote Environmental Audit Related to the Review of the Subsequent License Renewal Application ML23144A0192023-05-25025 May 2023 Review of the Spring 2022 Steam Generator Tube Inspection Report (O3R31) IR 05000269/20230012023-05-12012 May 2023 Integrated Inspection Report 05000269/2023001 and 05000270/2023001 and 05000287/2023001 ML23121A0552023-05-0303 May 2023 Acknowledgement of Withdrawal Request to Revise TS 5.5.2 Containment Leakage Rate Testing Program ML23118A0762023-05-0101 May 2023 Approval for Use of Specific Provision of a Later Edition of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section XI ML23117A0432023-04-20020 April 2023 Framatome, Inc., Part 21 Notification of Existence of a Defect ML23075A0732023-04-0505 April 2023 License Renewal Regulatory Audit Regarding the Environmental Review of the Subsequent License Renewal Application Supplement (EPID Number L-2021-SLE-0002) ML23045A1332023-03-15015 March 2023 Request for Scoping Comments Concerning the Supplemental Environmental Review of Oconee Nuclear Station, Units 1, 2, and 3, Subsequent License Renewal Application - Achp Letter ML23045A1402023-03-15015 March 2023 Request for Scoping Comments Concerning the Supplemental Environmental Review of Oconee Nuclear Station, Units 1, 2, and 3, Subsequent License Renewal Application - Shpo Letter ML23045A1432023-03-15015 March 2023 Request for Scoping Comments Concerning the Supplemental Environmental Review of Oconee Nuclear Station, Units 1, 2, and 3, Subsequent License Renewal Application - State Tribe Letter ML23069A1102023-03-10010 March 2023 Notification of Inspection and Request for Information for NRC Problem Identification and Resolution Inspection ML22332A4932023-03-10010 March 2023 William States Lee III 1 and 2 - Issuance of Amendments Regarding the Relocation of the Emergency Operations Facility ML23061A1772023-03-0303 March 2023 Notification of Oconee Nuclear Station Comprehensive Engineering Team Inspection - NRC Inspection Report 05000269/2023011, 05000270/2023011 and 05000287/2023011 IR 05000269/20220062023-03-0101 March 2023 Annual Assessment Letter for Oconee Nuclear Nuclear Station, Units 1, 2 and 3 (NRC Inspection Report 05000269/2022006, 05000270/2022006, and 05000287/2022006) ML23039A1632023-02-0808 February 2023 Requalification Program Inspection ML23037A0772023-02-0606 February 2023 402 Cyber Notification and RFI Letter Final IR 05000269/20220042023-02-0202 February 2023 Integrated Inspection Report 05000269 2022004 and 05000270/2022004 and 05000287/2022004 ML22363A3942023-01-12012 January 2023 Subsequent License Renewal Environmental Report Supplement - Proposed Review Schedule ML22356A0512022-12-14014 December 2022 Curtiss-Wright Nuclear Division, Letter Regarding Potential Efect in a Configuration of the 11/2 Inch Quick Disconnect Connector Cable Assemblies Supplied to Duke Energy (See Attached Spreadsheet) for a Total of 460 of Connectors Only Suppl ML22321A0492022-12-0808 December 2022 Issuance of Amendment Nos. 426, 428 and 427, Additional Mode Change Limitations Applicable to the Adoption of TSTF- 359, Revision 9, Increase Flexibility in Mode Restraints ML22329A1042022-11-29029 November 2022 Review of the Fall 2021 Steam Generator Tube Inspection Report ML22321A1582022-11-22022 November 2022 Summary of Conference Call Regarding the Fall 2022 Steam Generator Tube Inspections ML22096A0032022-11-18018 November 2022 McGuire Nuclear Station and Shearon Harris Nuclear Power Plant Authorization of RA-19-0352 Regarding Use of Alternative for RPV Head Closure Stud Examinations ML22256A2532022-11-14014 November 2022 Issuance of Amendments Regarding the Adoption of Technical Specifications Task Force Traveler TSTF-541, Rev. 2 IR 05000269/20220032022-11-0707 November 2022 Integrated Inspection Station 05000269/2022003 and 05000270/2022003 and 05000287/2022003 ML22301A0112022-11-0303 November 2022 Request for Withholding Information from Public Disclosure Regarding the SLR Application - September 2, 2022 ML22298A0752022-10-27027 October 2022 Request for Withholding Information from Public Disclosure Regarding the Subsequent License Renewal Application Duke Energy Letter Dated July 25, 2022 ML22264A0322022-10-20020 October 2022 _Request for Withholding Information from Public Disclosure Regarding the Subsequent License Renewal Application - Duke Energy Letter Dated July 8, 2022 IR 05000269/20220112022-09-26026 September 2022 NRC Inspection Report 05000269/2022011 and 05000270/2022011 and 05000287/2022011 ML22258A0302022-09-15015 September 2022 Evacuation Time Estimate Reports ML22222A0072022-09-14014 September 2022 Request for Withholding Information from Public Disclosure Regarding the Subsequent License Renewal Application ML22231B1362022-09-0101 September 2022 Review of the Draft Environmental Assessment and Findings of No Significant Impact for Catawba Nuclear Station, H.B. Robinson Steam Electric Plant, and Oconee Nuclear Station Independent Spent Fuel Storage Installation Decommissioning Fundi 2024-02-01
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OFFI ALUS Y-S RITY- NFO ION August 15, 2008 Mr. Dave Baxter 'ri, on inW9lS rewoid o Vice President, Oconee Site Duke Energy Carolinas, LLC 7800 Rochester Highway Seneca, SC 29672
SUBJECT:
INFORMATION REQUEST PURSUANT TO 10 CFR 50.54(f) RELATED TO EXTERNAL FLOODING, INCLUDING FAILURE OF THE JOCASSEE DAM, AT OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3, (TAC NOS. MD8224, MD8225, AND MD8226)
Dear Mr. Baxter:
This letter is being issued in accordance with the U.S. Nuclear Regulatory Commission's (NRC's) regulation in Title 10 of the Code of FederalRegulations (10 CFR), Part 50, Section 50.54(f). Pursuant to this regulation, you are required to provide further information regarding the consequences of external flooding, including failure of the Jocassee Dam, to enable us to determine whether the Oconee Nuclear Station, Units 1, 2, and 3 (Oconee) licenses should be modified, suspended, or revoked.
7 on the b( )(9 After the resolution of the inspection finding flood barrier, the NRC has further reviewed the facts and circumstances regarding overall adequacy of the flood protection of Oconee given the Jocassee Hydro Project, Dam Failure Inundation Study (Inundation Study, item 6 in the Enclosure. Specifically, the NRC is seeking information to determine whethed(b)(7)(F) [of the site exist relative to a Jocassee Dam failure, and whether Oconeeb Icompensating engineering safeguards for such an event.
We note that Section 3.1 of the Oconee Updated Final Safety Analysis Report (UFSAR) states, "The principal design criteria for Oconee 1, 2 and 3 were developed in consideration of the seventy General Design Criteria for Nuclear Power Plant Construction Permits proposed by the AEC [Atomic Energy Commission] in a proposed rule-making published in 10CFR Part 50 in the Federal Register of July 11, 1967." Furthermore, Section 3.1.2 of the UFSAR, "Criterion 2 -
Performance Standards (Category A)," states, "Those systems and components of reactor facilities which are essential to the prevention of accidents which could affect public health and safety or to mitigation of their consequences shall be designed, fabricated and erected to performance standards that will enable the facility to withstand, without loss of the capability to protect the public, the additional forces that might be imposed by natural phenomena such as earthquakes, tornadoes, flnndrinn cnnditinns- winds, ice. and other local site effects." The current UFSAR discusses (b)(7)(F) 1. However, it does not include the effects of a Jocassee Dam failure, nor does it include the flood protection 1(b)(7)(F) I We further note that in the mid-1 990's, the UFSAR was revised removing the reference to the Jocassee Dam failure and postulated (b)(7)(F) at the Oconee site.
In addition to the UFSAR, the NRC staff has reviewed a number of other documents relevant to flooding due to faiiure of the Jocassee Dam (see Enclosure). From this review, the NRC staff concluded that [(b)(7)(F)
IJLM1TFED INTERNAL DISTRIBUTION I
OlFkCAýUS"NLYS ITýY-R AT I ONP D. Baxter (b)(7)(F) However, the Inundation Study predicted that a failure of the Jocassee Dam could result in a (br(7)(F)
(b)(7)(F) I Therefore, the NRC staff seeks additional information regarding external flooding of the Oconee site, including the consequences of a Jocassee Dam failure. Pursuant to Section 161c, 161o, 182, and 186 of the Atomic Energy Act of 1954, as amended, and the Commission's regulations in 10 CFR 50.54(f), in order for the Commission to determine whether the licenses for Oconee should be modified, suspended, or revoked, you are required to provide information within 45 calendar days of receiving this letter that will demonstrate that the three Oconee units can be safely shut down and maintained in a safe shutdown condition, and that the two spent fuel pools can be maintained in a safe condition, in the event of external flooding, including a Jocassee Dam failure.
In your response, you shall address the following specific issues:
- 1) Explain the bounding external flood hazard at Oconee and the basis for excluding consideration of other external flood hazards, such as those described in the Inundation Study, as the bounding case.
- 2) Provide your assessment of the Inundation Study and why it does or does not represent the expected flood height following a Jocassee Dam failure.
3). Describe in detail t (b)(7)(F)
In answering these questions, please take appropriate measures in the development and handling of information regarding this issue, including consideration of the provisions of 10 CFR 2.390(d)(1). If safeguards information is necessary to provide an acceptable response, please provide the level of protection described in 10 CFR 73.21.
We recommend that your staff meet with the NRC staff within three weeks to discuss these issues and questions in order to ensure that your responses will have sufficient level of detail for the NRC staff to make an appropriate determination regarding this matter. Ifyou have any questions on this matter, please contact Senior Project Manager, Leonard N. Olshan, of my staff at 301-415-1419.
Sincerely, IRA!
Joseph G. Guitter, Director Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287
Enclosure:
Documents Reviewed Related to Failure of the Jocassee Dam at Oconee Nuclear Station, Units 1, 2, and 3
Outside of Scope
.ýOFF SE LY - CU REL ~I A-EiNRM 5$
LETTER FROM: J. GIITER TO: D. BAXTER
SUBJECT:
INFORMATION REQUEST PURSUANT TO 10 CFR 50.54(f) RELATED TO EXTERNAL FLOODING, INCLUDING FAILURE OF THE JOCASSEE DAM, AT OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3 DISTRIBUTION Non-PUBLIC RidsNrrPMLOlshan (hard copy) R. Pichumani, NRR RidsNrrAdesDe (PHiland) RidsNrrAdesDra (M. Cunningham) R. Carroll, Rgn II M. Franvich, NRR RidsNrrDorlLpl2-1 (MWong) M. Galloway, NRR J. Circle, NRR K. Manoly, NRR C 1ALUS J01 UIT l LA ýIN R TI N
DOCUMENTS REVIEWED RELATED TO FAILURE OF THE JOCASSEE DAM AT OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3
- 1. "Safety Evaluation of the Oconee Nuclear Power Station, Units 2 and 3, Duke Power Company," dated July 6, 1973
- 2. Letter from Robert W. Reid, NRC, to William 0. Parker, Jr., dated October 29, 1979
- 3. Letter from J. F. Stolz, NRC, to H. B. Tucker, dated April 28, 1983 (transmit NRC staff Safety Evaluation Report of the Oconee Standby Shutdown Facility)
- 4. NSAC-60, "Oconee PRA, A Probabilistic Risk Assessment of Oconee Unit 3," Vol. 4, cosponsored by the Nuclear Safety Analysis Center and Duke Power Company, dated June 1984
- 5. Duke internal memorandum from R. E. Harris to D. B. Coyle, "FSAR Section 9.6, Standby Shutdown Facility," dated June 11, 1992
- 6. Jocassee Hydro Project, Dam Failure Inundation Study," Federal Energy Regulatory Commission (FERC) Project No. 2503, dated December 10, 1992
- 7. Duke internal memorandum from R. W. McAuler, Jr. to file, "Oconee Nuclear Station, Jocassee Dam Failure Inundation Studies, File No.: OS-203," dated December 14, 1993
- 8. Letter from Albert F. Gibson, NRC, to J. W. Hampton, Duke, "Notice of Violation and Notice of Deviation (NRC Inspection Report Nos. 50-269/93-25, 50-270/93-25, and 50-287/93-25)," dated February 11, 1994
- 9. Letter from J. W. Hampton, Duke, dated March 14, 1994
- 10. Duke internal memorandum from P. C. Gurley to Tracey A. Saville, "Revision to FSAR, 9.0 Standby Shutdown Facility, Section 9.6.3.1 System Descriptions, Structure, Section 9.6.4.7 Flooding Review, Deletion of References to Jocassee Dam Failure, 10 CFR 50.59 Evaluation," dated May 31, 1994
- 11. Duke internal memorandum from K. W. Sandal to S. G. Benesole, "Oconee Nuclear Station, Units 1, 2, and 3, FSAR Change to Address SSF External Flood Protection Features, 10 CFR 50.59 Evaluation, File: OS-192.6," dated June 2, 1994
- 12. Duke internal memorandum from P. T. Farish to file, "Oconee Nuclear Station, Seismic PRA Analysis - Jocassee Dam Flooding Factors, File: OS-203," dated December 16, 1994
- 13. Letter from Albert F. Gibson, NRC, to J. W. Hampton, Duke, "Notice of Violation (NRC Inspection Report Nos. 50-269/94-31, 50-270/94-31, and 50-287/94-31," dated December 19, 1994
- 14. "Oconee Nuclear Station IPEEE Submittal Report," Duke Power Company, dated December 21, 1995
- 15. Letter from David E. LaBarge, NRC, to W. R. McCollum, Jr., "Oconee Nuclear Station, Units 1, 2, and 3 Re: Review of Individual Plant Examination of External Events (TAC Nos. M83649, M83650, and M83651)," dated March 15, 2000
- 16. Letter from Bruce H. Hamilton, Duke, to NRC, "Seismic Fragility Study," dated February 5, 2007
- 17. Letter from Bruce H. Hamilton, Duke, to W. D. Travers, NRC, "Request for NRC to Review Appeal of Final Significance Determination for SSF Flood Barrier White Finding,"
dated May 3, 2007
- 18. Letter from William D. Travers, NRC, to Bruce H. Hamilton, "Reconsideration of Final Significance Determination Associated with Standby Shutdown Facility Flood Barrier White Finding," dated November 20, 2007 1PERMITTED y ENCLOSURE OFCIL SEN RTY EA D IN RMA N