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Category:Enforcement Action
MONTHYEARIR 05000269/20150082015-03-26026 March 2015 IR 05000269/2015008; 2/23/2015 - 2/27/2015; Oconee Nuclear Station, Unit 1; Supplemental Inspection - Inspection Procedure (IP) 95001 IR 05000269/20140122014-08-12012 August 2014 EA-14-091 Oconee Nuclear Station - Final Significance Determination of White Finding, Notice of Violation and Assessment Follow-Up Letter (NRC Inspection Report No. 05000269/2014012) IR 05000269/20110192011-12-0606 December 2011 Final Significance Determination of One Yellow Finding and One Green Finding and Notice of Violation (NRC Inspection Report 05000269/2011019, 05000270/2011019, and 05000287/2011019 - Oconee Nuclear Station) ML1022102292010-08-0909 August 2010 EN-10-033, Oconee, Issuance of Final Significance Determination and Notice of Violation ML1016506262010-06-14014 June 2010 OI Synopsis 2-2010-003 Release to Oconee ML0623401152006-06-29029 June 2006 NRC Inspection Report 2006014 IR 05000269/20030042003-10-24024 October 2003 IR 05000269-03-004, IR 05000270-03-004, IR 05000287-03-004, on 06/29/2003-09/27/2003, Oconee Nuclear Station, Units 1, 2, and 3, Licensed Operator Requalification ML0209805932002-04-0808 April 2002 EA-02-048, Oconee Nuclear Station, Consideration for Escalated Enforcement Action 2015-03-26
[Table view] Category:Inspection Report Correspondence
MONTHYEARML23144A0192023-05-25025 May 2023 Review of the Spring 2022 Steam Generator Tube Inspection Report (O3R31) ML18180A2432018-06-26026 June 2018 Emergency Preparedness Inspection and Request for Information IR 05000269/20164062016-07-22022 July 2016 Cover Letter for NRC Material Control and Accounting Inspection Report 05000269/2016406, 05000270/2016406 and 05000287/2016406 IR 05000269/20134052013-05-30030 May 2013 IR 05000260-13-405 and 05000270-13-405 on 05/02/2013 for Oconee, Units 1, 2 and 3, Physical Security. Cover Letter IR 05000269/20114022011-09-22022 September 2011 IR 05000269-11-402, 05000270-11-402, 05000287-11-402; on 8/25/2011; Oconee Nuclear Station Security Baseline Inspection IR 05000269/20084012008-02-22022 February 2008 IR 05000269-08-401, IR 05000270-08-401, and IR 05000287-08-401, on 01/31/2008, for Oconee ML0706501902007-03-0101 March 2007 Response to Appeal of Final Significance Determination for a White Finding and Denial of Notice of Violation (Report Nos. 05000269-07-007, 05000270-07-007, and 05000287-07-007) IR 05000269/20060052007-01-30030 January 2007 IR 05000269-06-005, 05000270-06-005, 05000287-06-005, on 10/01/2006 - 12/31/2006, Oconee, Units 1, 2, and 3 IR 05000028/20064012007-01-18018 January 2007 NRC Inspection Report 05000269-06-401, 05000270-06-401 and 0500028-06-401. Cover Letter Only IR 05000269/20060082006-11-20020 November 2006 IR 05000269-06-008, 05000270-06-008, and 05000287-06-008, Safeguards Information Removed ML0632001712006-11-15015 November 2006 Reply to Notice of Violation EA-06-080 IR 05000269/20060072006-07-0707 July 2006 NRC Inspection Report 05000269/2006007, 05000270/2006007, and 05000287/20060007 - SGI Removed ML0623401152006-06-29029 June 2006 NRC Inspection Report 2006014 ML0618003912006-06-29029 June 2006 NRC Inspection Report 05000260-06-014, 05000270-06-014 & 05000287-06-014 IR 05000269/20060092006-02-21021 February 2006 NRC Inspection Report 05000269/2006009, 05000270/2006009, & 05000287/20060009 ML0535402472005-12-20020 December 2005 Notification of Oconee Nuclear Station Component Design Bases Inspection - NRC Inspection Report 05000269/2006006, 05000270/2006006 and 05000287/2006006 IR 05000269/20020072002-05-31031 May 2002 IR 05000269/02-007, 270, 287/02-07, 4/29-5/3/2002, Duke Energy Corporation, Oconee Nuclear Station, Units 1, 2 & 3: Followup Supplemental Inspection for Degraded Mitigating Systems Cornerstone IR 05000269/20010052002-04-29029 April 2002 IR 05000269/2001-005, 05000270/2001-005, 05000287/2001-005, Oconee Nuclear Station, Inspection on 12/30/2001 - 03/30/2002 Related to post-maintenance Testing & Other Activities. Two Noncited Violations Noted IR 05000269/20020082002-04-22022 April 2002 IR 05000269/2002-008, IR 05000270/2002-008 & IR 05000287/2002-08, Oconee, Units 1, 2 & 3 on March 19-22, 2002. Four Day Special Inspection to Determine Whether Ssf Would Perform Design Basis Function with Temporary Compensatory Measures Imp IR 05000269/20020062002-04-19019 April 2002 IR 05000269/2002-006, IR 05000270/2002-006 and IR 05000287/2002-006, Oconee Nuclear Station, Inspection on 03/22/02 Related Identification and Resolution of Problems in Compliance with Commission'S Rules and Regulations. No Violations Noted ML0210205552002-04-12012 April 2002 Safety System Design & Performance Capability Inspection NRC Inspection Report Nos. 50-269/2002-09, 50-270/2002-09 & 50-287/2002-09 IR 05000269/20020032002-03-20020 March 2002 IR 05000269/2002-003, IR 05000270/2002-003 & IR 05000287/2002-003, Oconee, Units 1,2 & 3, Inspection on 02/08/2002 Related to Safety & Compliance. Two Apparent Violations Noted 2023-05-25
[Table view] Category:Letter
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 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 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 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 ML22332A4932023-03-10010 March 2023 William States Lee III 1 and 2 - Issuance of Amendments Regarding the Relocation of the Emergency Operations Facility ML23069A1102023-03-10010 March 2023 Notification of Inspection and Request for Information for NRC Problem Identification and Resolution Inspection 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 ML22234A0062022-08-30030 August 2022 SLRA - Closed Public Meeting Summary - August 18, 2022 2024-02-01
[Table view] Category:Meeting Agenda
MONTHYEARPMNS20240150, Public Meeting to Receive Comments on the Draft Site-Specific Oconee Environmental Impact Statement2024-02-0808 February 2024 Public Meeting to Receive Comments on the Draft Site-Specific Oconee Environmental Impact Statement PMNS20240153, Public Meeting to Receive Comments on the Draft Site-Specific Oconee Environmental Impact Statement2024-02-0808 February 2024 Public Meeting to Receive Comments on the Draft Site-Specific Oconee Environmental Impact Statement PMNS20230332, and Oconee Nuclear Station Annual Assessment Meeting for 20222023-03-30030 March 2023 and Oconee Nuclear Station Annual Assessment Meeting for 2022 PMNS20220375, Pre-submittal Public Meeting with Duke Energy to Discuss the Proposed License Amendment Request to Revise Surveillance Frequency for Reactor Cooling System Pressurized Isolation Valve2022-04-19019 April 2022 Pre-submittal Public Meeting with Duke Energy to Discuss the Proposed License Amendment Request to Revise Surveillance Frequency for Reactor Cooling System Pressurized Isolation Valve PMNS20220232, and Oconee Nuclear Station Annual Assessment Meeting for 20212022-03-10010 March 2022 and Oconee Nuclear Station Annual Assessment Meeting for 2021 PMNS20220093, SLRA - Public Meeting to Discuss Select RAI Responses2022-02-0202 February 2022 SLRA - Public Meeting to Discuss Select RAI Responses PMNS20211268, Environmental Scoping Meeting Related to the Saint Lucie Plant, Units 1 and 2, Subsequent License Renewal Application2021-10-19019 October 2021 Environmental Scoping Meeting Related to the Saint Lucie Plant, Units 1 and 2, Subsequent License Renewal Application PMNS20211035, Environmental Scoping Meeting Related to the Oconee Nuclear Station, Unit Nos. 1, 2 and 3, Subsequent License Renewal Application2021-08-0909 August 2021 Environmental Scoping Meeting Related to the Oconee Nuclear Station, Unit Nos. 1, 2 and 3, Subsequent License Renewal Application PMNS20210274, Stations Annual Assessment Meeting2021-03-31031 March 2021 Stations Annual Assessment Meeting PMNS20210279, Pre-application Meeting with Duke Energy Carolinas to Discuss Relief Request Related to Code Case N-853 for Oconee Nuclear Station2021-03-19019 March 2021 Pre-application Meeting with Duke Energy Carolinas to Discuss Relief Request Related to Code Case N-853 for Oconee Nuclear Station PMNS20201404, Pre-Submittal Meeting for Subsequent License Renewal Application for Oconee Nuclear Station, Units 1, 2, and 3 - Safety2020-12-22022 December 2020 Pre-Submittal Meeting for Subsequent License Renewal Application for Oconee Nuclear Station, Units 1, 2, and 3 - Safety PMNS20201206, Subsequent License Renewal Environmental Pre-Application Meeting2020-10-26026 October 2020 Subsequent License Renewal Environmental Pre-Application Meeting PMNS20201240, Closed Meeting with Duke Energy to Update the U.S. Nuclear Regulatory Commission Staff Security Plan Changes2020-10-22022 October 2020 Closed Meeting with Duke Energy to Update the U.S. Nuclear Regulatory Commission Staff Security Plan Changes ML17304A9122017-11-0303 November 2017 12/5/2017, Forthcoming Closed Meeting with Duke Energy Carolinas, LLC Re. a Pre-Submittal LAR for the Classification of an Areas as a Vital for Oconee Nuclear Station, Units 1, 2, and 3 (CAC Nos. MG0250, MG0251, and MG0252; EPID L-2017-LRM- ML14078A4522014-03-19019 March 2014 Notice of Public Meeting to Discuss NRC Reactor Oversight Process and the Annual Assessment of the Oconee Nuclear Station ML14076A1252014-03-17017 March 2014 Notice of Public Meeting to Discuss NRC Reactor Oversight Process and the Annual Assessment of the Oconee Nuclear Station ML14072A2772014-03-13013 March 2014 May 22, 2014 Notice of Category 3 Public Meeting with Oconee to Discuss Annual Assessment ML14071A4402014-03-12012 March 2014 Notice of Public Meeting to Discuss NRC Reactor Oversight Process and the Annual Assessment of the Oconee Nuclear Station ML14043A2122014-02-12012 February 2014 Notice of Forthcoming Category 1 Public Meeting with Duke Energy Carolinas, LLC, to Discuss the Status of Major Projects at the Oconee Nuclear Station, Units 1, 2, and 3 ML13303B8282013-11-0101 November 2013 Notice of Meeting with Duke Energy to Discuss Proposed License Amendment Request Regarding Temporary Technical Specification Change for One Keowee Hydro Unit Inoperable - Oconee Nuclear Station, Units 1, 2, and 3 ML13295A3062013-10-22022 October 2013 Meeting Notice with Duke Energy Carolinas, LLC Discuss the Planned Modifications Related to the Fukushima Flood Hazard Reevaluations for the Sites Operated by Duke Energy Carolinas, LLC ML13262A3432013-09-19019 September 2013 10/3/2013 Meeting Notice with Duke Energy Carolinas, LLC, to Discuss the Proposed LAR Protected Service Water System Operation for the Oconee Nuclear Station, Units 1, 2, and 3 (TAC Nos. ME7737, ME7738, ME7739, ME7746, ME7747, and ME7748 ML13254A2262013-09-11011 September 2013 Meeting Notice with Duke Energy Carolinas, LLC, to Discuss the Seismic Review of the Jocassee Dam for the Oconee Nuclear Station, Units 1, 2, and 3 (Tac Nos. MF0518, MF0519, MF0520, MF1012, MF1013, and MF1014) ML13231A2162013-08-20020 August 2013 Meeting Notice with Duke Energy Carolinas, LLC, to Discuss the Seismic Review of the Jocassee Dam for the Oconee Nuclear Station, Units 1, 2, and 3 (Tac Nos. MF0518, MF0519, and MF0520) ML13217A4082013-08-0505 August 2013 Meeting Announcement 8-28-13 ML13077A1782013-03-18018 March 2013 3/25/13 Forthcoming Meeting with Duke Energy Carolinas to Discuss Response to NRC Request for Information for a Flooding Hazard Reevaluation for Oconee Nuclear Station, Units 1, 2, and 3 ML13070A3902013-03-12012 March 2013 Forthcoming Meeting with Duke Energy Carolinas, LLC, to Discuss Response to NRC Request for Information for Flooding Evaluation ML13056A0952013-02-26026 February 2013 Agenda FERC Meeting with NRC Personnel ML13052A4832013-02-22022 February 2013 3/19/13 Forthcoming Meeting with Duke Energy Carolinas, LLC to Discuss Response to NRC Request for Information for a Flooding Evaluation for the Oconee Nuclear Station, Units 1, 2, and 3 ML13039A1222013-02-12012 February 2013 Notice of Forthcoming Meeting with Duke Energy Carolinas, LLC, for a Predecisional Enforcement Conference on an Apparent Violation on a License Condition on Fire Protection at Oconee Nuclear Station, Units 1, 2, and 3 ML13036A2202013-02-0606 February 2013 2/19/13 Notice of Forthcoming Meeting with Duke Energy Carolinas, LLC to Discuss Response to NRC Request for Information for a Flooding Evaluation for the Oconee Nuclear Station, Units 1, 2, and 3 ML13052A7892013-02-0606 February 2013 Agenda FERC Meeting with NRC Personnel ML13011A1602013-01-15015 January 2013 1/30/13 Forthcoming Meeting with Duke Energy Carolinas, Llc. to Discuss Major Projects at Oconee Nuclear Station, Units 1, 2, and 3 ML12346A0632012-12-11011 December 2012 Forthcoming Meeting with Duke Energy to Discuss NFPA-805 License Condition for Oconee Nuclear Station, Units 1, 2, and 3 ML12300A4032012-10-26026 October 2012 11/8/2012 Meeting Notice with Duke Energy to Discuss NRC Order on Mitigation Strategies for Beyond-design-Basis External Events ML12213A5122012-08-0101 August 2012 Notice of Forthcoming Meeting with Duke Energy Carolinas, LLC to Discuss Consideration of Adding Main Steam Isolation Valves to the Oconee Nuclear Station, Units 1, 2, and 3 ML12184A1042012-07-0505 July 2012 Notice of Forthcoming Meeting with Duke Energy Carolinas, LLC to Discuss Revision of the License Condition of NFPA-805 for Oconee Nuclear Station, Units 1, 2, and 3 ML12174A0082012-06-25025 June 2012 Notice of Forthcoming Meeting with Duke Energy Carolinas, LLC to Discuss Major Projects at Oconee Nuclear Station, Units 1, 2, and 3 ML12122A1392012-05-0404 May 2012 Forthcoming Meeting with Duke Energy Carolinas, LLC to Discuss Consideration of Adding Main Steam Isolation Valves to Oconee Nuclear Station, Units 1, 2, and 3 ML12006A0502012-01-0606 January 2012 Notice of Forthcoming Meeting with Duke Energy Carolinas, LLC to Discuss Major Projects at Oconee Nuclear Station, Units 1, 2, and 3 IR 05000270/20002872011-11-28028 November 2011 11/16/2011- Summary of Meeting to Discuss the Safety Significance of Two Preliminary Greater Than Green Findings with Two Associated Apparent Violations Documented in Inspection Reports 05000269,05000270, 05000287/2011018 ML11280A0952011-10-0707 October 2011 Cancelled Forthcoming Meeting with Duke Energy Carolinas, Lcc to Discuss Tornado and High Energy Line Break License Amendments, Oconee Nuclear Station, Units 1, 2, and 3 ML11264A1452011-09-26026 September 2011 Notice of Forthcoming Meeting with Duke Energy Carolinas, LLC, to Discuss Tornado and High Energy Line Break License Amendments, for Oconee Nuclear Station, Units 1, 2, and 3 (Rescheduled from 9/28/2011 to 10/11/2011) ML11262A0242011-09-20020 September 2011 Notice of Closed Meeting with Duke Energy Carolinas, LLC, Regarding Oconee, Units 1, 2, and 3, to Discuss the April 29, 2011 Response to the Confirmation Action Letter Concerning External Flooding Issues ML11262A0252011-09-20020 September 2011 Cancelled Forthcoming Meeting with Duke Energy Carolinas, LLC, to Discuss Tornado and High Energy Line Break License Amendments, Oconee, Units 1, 2 and 3 ML11257A1902011-09-15015 September 2011 9/28/2011 - Notice of Meeting with Duke Energy Carolinas, LLC, to Discuss Tornado and High Energy Line Break License Amendments, Oconee Nuclear Station, Units 1, 2, and 3 ML11250A0662011-09-0808 September 2011 Notice of Rescheduled Closed Meeting with Duke Energy Carolinas, LLC, Regarding Oconee Nuclear Station, Units 1, 2, and 3 ML11228A0052011-08-17017 August 2011 Notice of Forthcoming Closed Meeting with Duke Energy Carolinas, Regarding Oconee Units 1, 2, & 3, to Discuss April 29, 2011 Response to Confirmation Action Letter Concerning External Flooding Issues at Oconee Site ML1103305462011-02-0202 February 2011 Summary of Meeting with Region II to Discuss the Result of the Supplemental Inspection for the Yellow and White Findings Previously Identified at the Oconee Nuclear Station and the Corrective Actions Taken ML1036302102010-12-28028 December 2010 Ltr to T. Ray Re Participation in Commission Meeting on Digital Instrumentation and Control (I&C) on 2/1/11 2024-02-08
[Table view] |
Text
June 29, 2006 EA-06-070 Duke Power Company, LLC d/b/a Duke Energy Carolinas, LLC (Duke)
ATTN: Mr. B. Hamilton Vice President Oconee Nuclear Station 7800 Rochester Highway Seneca, SC 29672
SUBJECT:
OCONEE NUCLEAR STATION - NRC INSPECTION REPORT 05000269/2006014, 05000270/2006014, AND 05000287/2006014
Dear Mr. Hamilton:
The purpose of this letter is to provide you with the Nuclear Regulatory Commissions (NRCs) final significance determination for a finding at Dukes Oconee Nuclear Station involving the failure to implement timely corrective actions in resolving east penetration room blowout panel-related deficiencies in all three Oconee Units. As documented in our letter dated March 31, 2006, this finding was assessed under the significance determination process as a preliminary greater than Green issue (i.e., an issue of at least low to moderate safety significance), as well as identified as an apparent violation (AV 05000269,270,287/2006012-01) of 10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action. Our letter offered you the opportunity (via regulatory conference or in writing) to give us your assessment of the risk significance and the associated apparent violation so that we would have a complete understanding of this issue prior to determining the final significance.
At your request, an open regulatory conference was conducted with members of your staff on May 17, 2006, to discuss Dukes position on this issue. The enclosures to this letter include the list of attendees at the regulatory conference, and copies of the material presented by your staff and the NRC at the regulatory conference. During the conference, Duke provided the results of its risk analysis, concluding that the finding was of very low safety significance. In addition, Duke agreed with NRCs characterization of the finding as a violation of regulatory requirements, and advised of its plans to implement modifications to address the related flooding concerns in all three Units by May 2007.
In addition to the uncertainties associated with not recovering secondary side heat removal, below is a list of some of the key points raised by Duke during the regulatory conference that were also considered [as indicated] during the NRCs post risk review:
- The inclusion of welds other than girth welds was considered by Duke to be inconsistent with the intended use of the EPRI TR-11880 pipe failure study; therefore, unlike the NRCs phase 3 analysis, only girth welds were considered in Dukes pipe rupture
2 frequency estimate. [Adjustments were made to the NRC analysis to reflect a different weld count for the welds that could impact non-erosion/corrosion type of failures for large break sizes (non-scalable, non-system level). Because the proportion of scalable weld failures that result in small leaks is greater, the weld count for these was left unchanged.]
- Piping lengths used in the NRCs phase 3 analysis were different than that taken from Dukes review of Oconee piping drawings and field walkdowns. [The Duke measurements (adjusted up by 23 feet for Units 1 and 2 to account for auxiliary building ventilation room piping that could flood the respective east penetration room) were incorporated into the NRC analysis.]
- Based on Dukes calculations, the automatic feedwater isolation system (AFIS) would actuate for very large breaks; thereby, precluding flooding of the high pressure injection (HPI) pumps. [Consideration for AFIS to isolate main feedwater from very large breaks was incorporated into the NRC analysis.]
- The scaling factor for proportional-type breaks used in the NRCs phase 3 analysis were inappropriately based on flow rate. [The scaling factor for proportional-type breaks was changed to more appropriately reflect a scaling factor for zero to full break based on the pipe size.]
- Duke confirmed the environmental qualification of emergency feedwater control valves 315 and 316. [The valves environmental qualification was acknowledged and appropriately taken into account.]
- Duke considered equipment less than 10 pipe diameters from main feedwater headers to be vulnerable to jet impingement. [No credit was granted for the general application of 10 effective pipe diameters as the zone of influence for jet impingement, for it may not be large enough. It needs to be site specific, based on the size of the leak and the potentially affected structures, systems, and components.]
After considering the information developed during the inspection and the points addressed above, the NRC has concluded that the inspection finding is appropriately characterized in the mitigating systems cornerstone as having very low safety significance (Green). It should be noted that the final risk determination supporting this conclusion did not take in to account other HELB-related issues such as recovery via the standby shutdown facility with excessive main steam safety valve cycling, HELB effects on adjacent piping systems, non-sealed electrical penetrations and junction boxes, etc. These other HELB-related issues, along with the blowout panel-related deficiencies, are being addressed collectively under the HELB mitigation strategy reconstitution effort currently underway.
The subject finding was also determined to be a violation of NRC requirements, as delineated in our March 31, 2006, letter and presented during the regulatory conference (see Enclosure 3).
However, because of its very low safety significance and because the issue was entered into Dukes corrective action program, the NRC is treating the finding as a non-cited violation (NCV) consistent with Section VI.A.1 of the NRC Enforcement Policy. For administrative purposes,
3 this violation will be identified as NCV 05000269,270,287/2006014-01, Failure to Promptly Correct Long-Standing East Penetration Room Blowout Panel-Related Deficiencies That Preclude Flood Mitigation in the Auxiliary Building. Accordingly, the associated apparent violation AV 05000269,270,287/2006012-01 is closed.
In addition to the violation above, a related apparent violation of 10 CFR 50.73, Part (v) was also discussed during the conference, which concerned the failure to report that east penetration room blowout panel-related deficiencies would prevent the fulfillment of the HPI system safety function to mitigate the consequences of a HELB (i.e., to shutdown the reactor and maintain it in a cold shutdown condition). As described in our letter of March 31, 2006, this apparent violation was not considered for escalated enforcement because its safety significance was low and the particular regulatory process was not significantly impeded. Duke acknowledged the violation and indicated that a licensee event report would be submitted.
As such, it has been determined that this Severity Level IV violation should be non-cited in accordance with Section VI.A.1 of the NRCs Enforcement Policy. For administrative purposes, this violation will be identified as NCV 05000269,270,287/2006014-02, Failure to Report East Penetration Room Blowout Panel-Related Deficiencies Would Prevent Fulfillment of the HPI System Safety Function. Accordingly, the associated apparent violation AV 05000269,270,287/
2006012-02 is closed.
In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter and its enclosures will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of NRC's document system (ADAMS). ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
Should you have any questions regarding this letter, please contact Michael E. Ernstes, Chief, Reactor Projects Branch 1, at (404)-562-4540.
Sincerely,
//RA//
Charles Casto, Director Division of Reactor Projects Docket Nos.: 50-269, 50-270, 50-287, 72-04 License Nos.: DPR-38, DPR-47, DPR-55
Enclosures:
- 1. List of Attendees
- 2. Material presented by Duke
- 3. Material presented by NRC cc w/encls: (see page 3)
_ML062340115 OFFICE RII:EICS RII:DRP SIGNATURE CFE //RA// MEE //RA//
NAME CEvans MErnstes DATE 06/29/06 06/20906 E-MAIL COPY? YES NO YES NO YES NO YES NO YES NO YES NO YES NO Duke 4 cc w/encl:
B. G. Davenport Lyle Graber, LIS Compliance Manager (ONS) NUS Corporation Duke Power Company Electronic Mail Distribution Electronic Mail Distribution R. L. Gill, Jr., Manager Lisa Vaughn Nuclear Regulatory Issues Associate General Counsel and Industry Affairs Duke Power Company Duke Power Company 526 South Church Street 526 S. Church Street Mail Code EC 07H Charlotte, NC 28201-0006 Charlotte, NC 28202 Charles Brinkman Timika Shafeek-Horton Director, Washington Operations Assistant General Counsel Westinghouse Electric Company Duke Power Company 12300 Twinbrook Parkway, Suite 330 526 South Church Street-EC07H Rockville, MD 20852 Charlotte, NC 28202 Distribution w/encl: (see page 5)
David A. Repka Winston & Strawn LLP Electronic Mail Distribution Beverly Hall, Acting Director Division of Radiation Protection N. C. Department of Environmental Health & Natural Resources Electronic Mail Distribution Henry J. Porter, Assistant Director Div. of Radioactive Waste Mgmt.
S. C. Department of Health and Environmental Control Electronic Mail Distribution R. Mike Gandy Division of Radioactive Waste Mgmt.
S. C. Department of Health and Environmental Control Electronic Mail Distribution County Supervisor of Oconee County 415 S. Pine Street Walhalla, SC 29691-2145
5 Letter to B. Hamilton from Charles Casto dated June 29, 2006.
SUBJECT:
OCONEE NUCLEAR STATION - NRC INSPECTION REPORT 05000269/2006014, 05000270/2006014, AND 05000287/2006014 Distribution w/encl:
L. Olshan, NRR C. Evans (Part 72 Only)
L. Slack, RII EICS L. Trocine, OE OEMAIL RIDSNRRDIRS PUBLIC
LIST OF ATTENDEES Duke Power Company T. Brown, Senior Civil Engineer, Oconee Nuclear Station (ONS)
G. Davenport, Regulatory Compliance Manager, ONS R. Freudenberger, Engineering Supervisor, ONS M. Glover, Engineering Manager, ONS B. Hamilton, Site Vice President, ONS L. Kanipe, Probabilistic Risk Assessment (PRA) Engineer, ONS A. Park, Senior Civil Engineer, ONS Nuclear Regulatory Commission R. Bernhard, Senior Reactor Analyst, Division of Reactor Safety, Region II (RII)
R. Carroll, Senior Project Engineer, Division of Reactor Projects (DRP), RII C. Casto, Director,DRP, RII C. Evans, Legal Counsel/Enforcement Officer, RII
- J. Fair, Engineering & Safety Systems (ESS), Nuclear Reactor Regulation (NRR)
- M. Franovich, Chief, PRA Operational Support, Division of Risk Assessment (DRA), NRR
- L. Olshan, Oconee Project Manager, NRR D. Payne, Acting Chief, DRP Branch 1, RII M. Shannon, Oconee Senior Resident Inspector S. Sparks, Senior Enforcement Specialist, RII
- J. Tatum, ESS, NRR L. Trocine, Office of Enforcement
- Participated by telephone Enclosure 1
AGENDA OPEN REGULATORY CONFERENCE OCONEE NUCLEAR STATION May 17, 2006 NRC REGION II OFFICE, ATLANTA, GA.
I. OPENING REMARKS, INTRODUCTIONS AND MEETING INTENT Mr. C. Casto, Director, Division of Reactor Projects (DRP)
II. NRC REGULATORY CONFERENCE POLICY Mr. D. C. Payne, Acting Chief, Branch 1, DRP III. STATEMENT OF THE ISSUE WITH RISK PERSPECTIVES Mr. D. C. Payne, Acting Chief, Branch 1, DRP IV.
SUMMARY
OF APPARENT VIOLATION Mr. D. C. Payne, Acting Chief, Branch 1, DRP V. LICENSEE RISK PERSPECTIVE PRESENTATION VI. LICENSEE RESPONSE TO APPARENT VIOLATION VII. BREAK/NRC CAUCUS Mr. C. Casto, Director, DRP VIII. CLOSING REMARKS Mr. C. Casto, Director, DRP Enclosure 3
2 Draft Apparent Violations (1) Considered for Escalated Enforcement:
10 CFR 50, Appendix B, Criterion XVI, Corrective Actions, requires in part that measures be established to assure that conditions adverse to quality, such as deficiencies, deviations, and non-conformances are promptly identified and corrected.
Contrary to the above, a condition adverse to quality concerning east penetration room blowout panel-related deficiencies, identified in all three Oconee Units, was not promptly corrected. The deficiencies involved inappropriate blowout panel modifications (identified as a violation in 2002), as well as inappropriate floor curbing and inadequate internal door and block wall strength (all identified in DECs corrective action program in 2001). As a result of these deficiencies, the blowout panels would not be assured of opening in the event of certain high energy line break (HELB) scenarios, and the HELB-related flood waters would egress down into the auxiliary building; thereby, significantly impacting the safety-related high pressure injection pumps. Consequently, Units 1, 2, and 3 continue to be operated outside their licensing basis with respect to HELB-related flood mitigation in the auxiliary building.
Note: The apparent violations discussed at this Regulatory Conference are subject to further review and subject to change prior to any resulting enforcement action.
Enclosure 3
3 Draft Apparent Violations (contd)
(2) Not Considered for Escalated Enforcement:
10 CFR 50.73, Part (v), requires the reporting of any event or condition that could have prevented the fulfillment of the safety function of structures or systems that are needed to (A) shutdown the reactor and maintain it in a safe shutdown condition (licensing basis is cold shutdown) and (D) mitigate the consequences of an accident.
Contrary to the above, the licensee failed to report that improper modifications to the east penetration room blowout panels would prevent the fulfillment of the safety function of the HPI system to mitigate the consequences of a HELB accident (i.e., to shutdown the reactor and maintain it in a cold shutdown condition).
Note: The apparent violations discussed at this Regulatory Conference are subject to further review and subject to change prior to any resulting enforcement action.
Enclosure 3