Letter Sequence Other |
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Results
Other: CNL-14-033, Second Six-Month Status Report and Revised Overall Integrated Plan in Response to March 12, 2012 Commission Order Modifying Licenses Re Requirements for Mitigation Strategies for Beyond-Design-Basis External Events, CNL-14-133, Third Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)(TAC Nos.., CNL-15-037, Fourth Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049), CNL-15-175, Fifth Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049), CNL-16-026, Completion of Required Action for Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049) March 12, 2012, ML12307A104, ML13063A183, ML13247A286, ML14041A192, ML15033A430
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MONTHYEARML12307A1042012-10-29029 October 2012 Tennessee Valley Authority - Initial Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049) Project stage: Other ML13063A1832013-02-28028 February 2013 Overall Integrated Plan in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049) Project stage: Other ML13063A0112013-02-28028 February 2013 Overall Integrated Plan in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Reliable Spent Fuel Pool Instrumentation (EA-12-051) Project stage: Other ML13198A3542013-07-17017 July 2013 Request for Additional Information Regarding Overall Integrated Plan for Reliable Spent Fuel Pool Instrumentation (Order No. EA-12-051) Project stage: RAI ML13235A0072013-08-16016 August 2013 Response to NRC Request for Additional Information Regarding Overall Integrated Plan for Reliable Spent Fuel Pool Instrumentation Project stage: Response to RAI ML13247A2912013-08-28028 August 2013 First Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051) for Sequoyah Nuclear Plant Project stage: Other ML13247A2862013-08-28028 August 2013 First Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events Project stage: Other ML13312A4152013-11-21021 November 2013 Interim Staff Evaluation and Request for RAI Regarding the Overall Integrated Plan for Implementation of Order EA-12-051, Reliable Spent Fuel Pool Instrumentation Project stage: RAI ML14041A1922014-02-16016 February 2014 Mega-Tech Services, LLC Technical Evaluation Report Regarding the Overall Integrated Plan for Sequoyah Nuclear Plant, Units 1 and 2, TAC Nos.: MF0864 and MF0865 Project stage: Other ML14002A1132014-02-19019 February 2014 Interim Staff Evaluation Relating to Overall Integrated Plan in Response to Order EA-12-049 (Mitigation Strategies) Project stage: Acceptance Review CNL-14-029, Second Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051) for Sequoyah Nuclear Plant2014-02-28028 February 2014 Second Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051) for Sequoyah Nuclear Plant Project stage: Other CNL-14-033, Second Six-Month Status Report and Revised Overall Integrated Plan in Response to March 12, 2012 Commission Order Modifying Licenses Re Requirements for Mitigation Strategies for Beyond-Design-Basis External Events2014-03-0505 March 2014 Second Six-Month Status Report and Revised Overall Integrated Plan in Response to March 12, 2012 Commission Order Modifying Licenses Re Requirements for Mitigation Strategies for Beyond-Design-Basis External Events Project stage: Other CNL-14-133, Third Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)(TAC Nos..2014-08-28028 August 2014 Third Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)(TAC Nos.. Project stage: Other CNL-14-130, Third Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051) for Sequoyah Nuclear Plant2014-08-28028 August 2014 Third Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051) for Sequoyah Nuclear Plant Project stage: Other ML14302A1972014-11-0606 November 2014 Plan for the Onsite Audit Regarding Implementation of Mitigating Strategies and Reliable Spent Fuel Instrumentation Related to Orders EA-12-049 and EA-12-051 Project stage: Acceptance Review L-2014-362, Request for Schedule Relaxation from NRC Order EA-12-049 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events2014-12-19019 December 2014 Request for Schedule Relaxation from NRC Order EA-12-049 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events Project stage: Request CNL-15-038, Fourth Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051)2015-02-27027 February 2015 Fourth Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051) Project stage: Other CNL-15-037, Fourth Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)2015-02-27027 February 2015 Fourth Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049) Project stage: Other ML15033A4302015-03-0303 March 2015 Report for the Onsite Audit Regarding Implementation of Mitigating Strategies and Reliable Spent Fuel Instrumentation Related to Orders EA-12-049 and EA-12-051 Project stage: Other CNL-15-065, Request for Schedule Relaxation from NRC Order EA-12-049, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design External Event2015-04-0202 April 2015 Request for Schedule Relaxation from NRC Order EA-12-049, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design External Event Project stage: Request ML15104A7032015-04-29029 April 2015 Relaxation of the Schedule Requirements of Order EA-12-049, Issuance of Order to Modify Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events. Project stage: Approval CNL-15-175, Fifth Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)2015-08-28028 August 2015 Fifth Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049) Project stage: Other CNL-16-026, Completion of Required Action for Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049) March 12, 20122016-02-11011 February 2016 Completion of Required Action for Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049) March 12, 2012 Project stage: Other 2014-02-19
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Category:Letter
MONTHYEARCNL-24-047, Decommitment of Flood Mode Mitigation Improvement Systems2024-09-24024 September 2024 Decommitment of Flood Mode Mitigation Improvement Systems CNL-24-060, Supplement to Request for Approval of the Tennessee Valley Authority Nuclear Quality Assurance Program Description2024-09-24024 September 2024 Supplement to Request for Approval of the Tennessee Valley Authority Nuclear Quality Assurance Program Description ML24262A0602024-09-23023 September 2024 Summary of August 19, 2024, Meeting with Tennessee Valley Authority Regarding a Proposed Supplement to the Tennessee Valley Authority Nuclear Quality Assurance Plan ML24267A0402024-09-19019 September 2024 Cycle 27 Core Operating Limits Report Revision 0 ML24185A1742024-09-18018 September 2024 Cover Letter - Issuance of Exemption Related to Non-Destructive Examination Compliance Regarding Sequoyah Nuclear Plant Independent Spent Fuel Storage Installation CNL-24-065, Tennessee Valley Authority – Central Emergency Control Center Emergency Plan Implementing Procedure Revisions2024-09-18018 September 2024 Tennessee Valley Authority – Central Emergency Control Center Emergency Plan Implementing Procedure Revisions ML24253A0152024-09-0808 September 2024 Emergency Plan Implementing Procedure Revisions ML24247A2212024-08-29029 August 2024 Notification of Deviation from Pressurized Water Reactor Owners Group (PWROG) Letter OG-21-160, NEI 03-08 Needed Guidance: PWR Lower Radial Support Clevis Insert X-750 Bolt Inspection Requirements, September 1, 2021 ML24247A1802024-08-28028 August 2024 Application to Revise the Fuel Handling Accident Analysis, to Delete Technical Specification 3.9.4, Containment Penetrations, and to Modify Technical Specification 3.3.6, Containment Ventilation Isolation Instrumentation for Sequoyah Nuclea IR 05000327/20240052024-08-26026 August 2024 Updated Inspection Plan for Sequoyah Nuclear Plant, Units 1 and 2 - Report 05000327/2024005 and 05000328/2024005 ML24239A3972024-08-23023 August 2024 Rssc Wire & Cable LLC Dba Marmon - Part 21 Final Notification - 57243-EN 57243 CNL-24-061, Supplement to Application to Revise Function 5 of Technical Specification Table 3.3.2-1, ‘Engineered Safety Feature Actuation System Instrumentation,’ for the Sequoyah and Watts Bar (SQN-TS-23-02 and WBN-TS-23-08),2024-08-19019 August 2024 Supplement to Application to Revise Function 5 of Technical Specification Table 3.3.2-1, ‘Engineered Safety Feature Actuation System Instrumentation,’ for the Sequoyah and Watts Bar (SQN-TS-23-02 and WBN-TS-23-08), IR 05000327/20240022024-07-31031 July 2024 Integrated Inspection Report 05000327/2024002 and 05000328/2024002 ML24211A0542024-07-29029 July 2024 Operator License Examination Report ML24211A0572024-07-29029 July 2024 Submittal of Emergency Plan Implementing Procedure Revision ML24211A0412024-07-26026 July 2024 Unit 1 Cycle 26 Refueling Outage - 90-Day Inservice Inspection Summary Report ML24199A0012024-07-22022 July 2024 Clarification and Correction to Exemption from Requirement of 10 CFR 37.11(c)(2) ML24172A1342024-07-15015 July 2024 Exemptions from 10 CFR 37.11(C)(2) (EPID L-2023-LLE-0024) - Letter ML24191A4652024-07-0909 July 2024 Response to NRC Regulatory Issue Summary 2024-01, Preparation and Scheduling of Operator Licensing Examinations ML24177A0282024-06-25025 June 2024 Emergency Plan Implementing Procedure Revisions ML24176A0222024-06-24024 June 2024 Retraction of Interim Report of a Deviation or Failure to Comply – Transducer Model 8005N ML24089A1152024-06-21021 June 2024 Transmittal Letter, Environmental Assessments and Findings of No Significant Impact Related to Exemption Requests from 10 CFR 37.11(c)(2) ML24145A0852024-05-30030 May 2024 1B-B Diesel Generator Failure - Final Significance Determination Letter ML24145A1052024-05-29029 May 2024 301 Exam Approval Letter ML24134A1762024-05-13013 May 2024 Submittal of 2023 Annual Radiological Environmental Operating Report CNL-24-040, Tennessee Valley Authority - Central Emergency Control Center Emergency Plan Implementing Procedure Revisions2024-05-0808 May 2024 Tennessee Valley Authority - Central Emergency Control Center Emergency Plan Implementing Procedure Revisions ML24128A0352024-05-0707 May 2024 Providing Supplemental Information to Apparent Violation ML24120A0582024-04-26026 April 2024 10 CFR 50.46 Annual Report for Sequoyah Nuclear Plant Units 1 and 2 ML24116A2612024-04-25025 April 2024 Interim Report of a Deviation or Failure to Comply - Transducer Model 8005N ML24114A0482024-04-23023 April 2024 Annual Radioactive Effluent Release Report for 2023 Monitoring Period CNL-24-037, Clinch River, Sequoyah, Units 1 and 2, Watts Bar, Unit 1 and 2, Nuclear Quality Assurance Plan, TVA-NQA-PLN89-A, Revision 422024-04-22022 April 2024 Clinch River, Sequoyah, Units 1 and 2, Watts Bar, Unit 1 and 2, Nuclear Quality Assurance Plan, TVA-NQA-PLN89-A, Revision 42 ML24144A2322024-04-20020 April 2024 Tennessee Multi-Sector Permit (Tmsp), 2024 Annual Discharge Monitoring Report for Outfalls SW-3, SW-3, and SW-9 ML24144A2362024-04-20020 April 2024 Discharge Monitoring Report (Dmr), March 2024 ML24102A1212024-04-18018 April 2024 Summary of Conference Call with Tennessee Valley Authority Regarding Sequoyah Nuclear Plant, Unit 1 Spring 2024 Steam Generator Tube Inspections ML24089A0882024-04-18018 April 2024 – Exemption from Select Requirements of 10 CFR Part 73; Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting CNL-24-033, Central Emergency Control Center Emergency Plan Implementing Procedure Revisions2024-04-17017 April 2024 Central Emergency Control Center Emergency Plan Implementing Procedure Revisions IR 05000327/20240012024-04-17017 April 2024 Integrated Inspection Report 05000327/2024001 and 05000328/2024001 CNL-24-024, Hydrologic Engineering Center River Analysis System Project Milestone Status Update2024-04-17017 April 2024 Hydrologic Engineering Center River Analysis System Project Milestone Status Update ML24109A0272024-04-16016 April 2024 Cycle 27 Core Operating Limits Report Revision 0 CNL-23-006, Application to Modify Technical Specifications 3.8.1, AC Sources – Operating, and 3.8.2, AC Sources – Shutdown, for Sequoyah Nuclear Plant (SQN-TSC-22-03)2024-04-15015 April 2024 Application to Modify Technical Specifications 3.8.1, AC Sources – Operating, and 3.8.2, AC Sources – Shutdown, for Sequoyah Nuclear Plant (SQN-TSC-22-03) ML24106A0502024-04-12012 April 2024 Discharge Monitoring Report (Dmr), February 2024 ML24100A0162024-04-11011 April 2024 Request for Regulatory Conference (Tennessee Valley Authority - Sequoyah Nuclear Plant) CNL-24-020, Clinch River, Sequoyah, Units 1 and 2, Watts Bar, Units 1 and 2, Request for Approval of Quality Assurance Program Description and Application to Revise the Technical Specifications Associated with QAPD Requirements2024-04-0101 April 2024 Clinch River, Sequoyah, Units 1 and 2, Watts Bar, Units 1 and 2, Request for Approval of Quality Assurance Program Description and Application to Revise the Technical Specifications Associated with QAPD Requirements ML24088A0332024-03-28028 March 2024 Request for Regulatory Conference (Tennessee Valley Authority) CNL-24-008, Guarantee of Payment of Deferred Premiums - 2023 Annual Report2024-03-27027 March 2024 Guarantee of Payment of Deferred Premiums - 2023 Annual Report CNL-24-007, Annual Insurance Status Report2024-03-27027 March 2024 Annual Insurance Status Report ML24040A2062024-03-26026 March 2024 Issuance of Amendment Nos. 367 and 361 Regarding Changes to the Hydrologic Analyses (EPID L-2020-LLA-0004) - Public IR 05000327/20240902024-03-19019 March 2024 NRC Inspection Report 05000327-2024090 and 05000328-2024090 and Preliminary Greater than Green Finding and Apparent Violation CNL-24-027, Response to Request for Additional Information Regarding Sequoyah Nuclear Plant, Units 1 and 2, Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation2024-03-14014 March 2024 Response to Request for Additional Information Regarding Sequoyah Nuclear Plant, Units 1 and 2, Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation CNL-24-029, Response to Request for Additional Information Regarding Tennessee Valley Authority - Request for Exemption from Specific Requirements of 10 CFR Part 372024-03-14014 March 2024 Response to Request for Additional Information Regarding Tennessee Valley Authority - Request for Exemption from Specific Requirements of 10 CFR Part 37 2024-09-08
[Table view] Category:Status Report
MONTHYEARCNL-24-007, Annual Insurance Status Report2024-03-27027 March 2024 Annual Insurance Status Report IR 05000259/20230062024-02-28028 February 2024 Annual Assessment Letter for Sequoyah Nuclear Plant, Units 1, 2 - Report 05000259/2023006, 05000260/2023006 and 05000296/2023006 CNL-23-022, Decommissioning Funding Status Report2023-03-29029 March 2023 Decommissioning Funding Status Report CNL-22-099, Tennessee Valley Authority - Hydrologic Engineering Center River Analysis System Project Milestone Status Update2022-10-31031 October 2022 Tennessee Valley Authority - Hydrologic Engineering Center River Analysis System Project Milestone Status Update CNL-22-070, Status Regarding the Improved Flood Mitigation System Project2022-06-30030 June 2022 Status Regarding the Improved Flood Mitigation System Project CNL-22-052, Tennessee Valley Authority - Hydrologic Engineering Center River Analysis System Project Milestone Status2022-04-27027 April 2022 Tennessee Valley Authority - Hydrologic Engineering Center River Analysis System Project Milestone Status CNL-21-097, Status Regarding the Improved Flood Mitigation System Project2021-12-21021 December 2021 Status Regarding the Improved Flood Mitigation System Project CNL-21-048, Hydrologic Engineering Center River Analysis System (HEC-RAS) Project Miilstone Status Update2021-04-29029 April 2021 Hydrologic Engineering Center River Analysis System (HEC-RAS) Project Miilstone Status Update CNL-21-032, Watt Bar Nuclear Plant, Units 1 and 2 - Annual Insurance Status Report2021-03-25025 March 2021 Watt Bar Nuclear Plant, Units 1 and 2 - Annual Insurance Status Report CNL-21-030, Decommissioning Funding Status Report2021-03-25025 March 2021 Decommissioning Funding Status Report IR 05000327/20200062021-03-0303 March 2021 Annual Assessment Letter for Sequoyah Nuclear Plant, Units 1 and 2 - Report 05000327/2020006 and 05000328/2020006 CNL-20-088, Hydrologic Engineering Center River Analysis System (HEC-RAS) Project Milestone Status Update2020-10-29029 October 2020 Hydrologic Engineering Center River Analysis System (HEC-RAS) Project Milestone Status Update CNL-20-020, Annual Insurance Status Report2020-03-20020 March 2020 Annual Insurance Status Report CNL-19-094, Status Regarding the Improved Flood Mitigation System Project2019-09-30030 September 2019 Status Regarding the Improved Flood Mitigation System Project CNL-19-046, Tennessee Valley Authority - Hydrologic Engineering Center River Analysis System (HEC-RAS) Project Milestone Status Update and Commitment Changes2019-04-29029 April 2019 Tennessee Valley Authority - Hydrologic Engineering Center River Analysis System (HEC-RAS) Project Milestone Status Update and Commitment Changes CNL-18-136, Plants: Tennessee Valley Authority - Hydrologic Engineering Center River Analysis System (HEC-RAS) Project Milestone Status Update2018-12-27027 December 2018 Plants: Tennessee Valley Authority - Hydrologic Engineering Center River Analysis System (HEC-RAS) Project Milestone Status Update CNL-18-122, Status Regarding the Improved Flood Mitigation System Project2018-09-28028 September 2018 Status Regarding the Improved Flood Mitigation System Project CNL-18-093, Hydrologic Engineering Center River Analysis System (HEC-RAS) Project Milestone Status Update2018-06-22022 June 2018 Hydrologic Engineering Center River Analysis System (HEC-RAS) Project Milestone Status Update CNL-18-025, Annual Insurance Status Report2018-03-28028 March 2018 Annual Insurance Status Report CNL-17-072, Hydrologic Engineering Center River Analysis System (HEC-RAS) Project Milestone Status Update2017-06-27027 June 2017 Hydrologic Engineering Center River Analysis System (HEC-RAS) Project Milestone Status Update CNL-17-021, Decommissioning Funding Status Report2017-03-30030 March 2017 Decommissioning Funding Status Report CNL-17-031, Annual Insurance Status Report2017-03-30030 March 2017 Annual Insurance Status Report CNL-15-259, Eleventh Progress Update on Improved Flood Mitigation System Project2015-12-22022 December 2015 Eleventh Progress Update on Improved Flood Mitigation System Project CNL-15-175, Fifth Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)2015-08-28028 August 2015 Fifth Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049) CNL-15-082, Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report2015-04-30030 April 2015 Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report CNL-15-058, Fifth Status Update of Planned Actions to Facilitate Maintenance of 6.9 Kilovolt and 480 Volt Shutdown Boards at Sequoyah, Units 1 and 22015-03-27027 March 2015 Fifth Status Update of Planned Actions to Facilitate Maintenance of 6.9 Kilovolt and 480 Volt Shutdown Boards at Sequoyah, Units 1 and 2 CNL-15-037, Fourth Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)2015-02-27027 February 2015 Fourth Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049) CNL-15-038, Fourth Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051)2015-02-27027 February 2015 Fourth Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051) CNL-15-018, Nuclear Power Group Commercial Grade Dedication Recovery Project - January 2015 Status Report2015-01-30030 January 2015 Nuclear Power Group Commercial Grade Dedication Recovery Project - January 2015 Status Report CNL-14-195, the Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2014 Status Report2014-10-31031 October 2014 the Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2014 Status Report CNL-14-133, Third Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)(TAC Nos..2014-08-28028 August 2014 Third Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)(TAC Nos.. CNL-14-063, the Tennessee Valley Authority Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2014 Status Report2014-04-30030 April 2014 the Tennessee Valley Authority Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2014 Status Report CNL-14-050, Fourth Quarterly Status Report to the Flooding Hazard Reevaluation Report Extension Request2014-03-31031 March 2014 Fourth Quarterly Status Report to the Flooding Hazard Reevaluation Report Extension Request CNL-14-029, Second Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051) for Sequoyah Nuclear Plant2014-02-28028 February 2014 Second Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051) for Sequoyah Nuclear Plant CNL-14-008, the Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - January 2014 Status Report2014-01-31031 January 2014 the Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - January 2014 Status Report CNL-13-144, Third Quarterly Status Report to the Flooding Hazard Reevaluation Report Extension Request2013-12-31031 December 2013 Third Quarterly Status Report to the Flooding Hazard Reevaluation Report Extension Request ML13247A2862013-08-28028 August 2013 First Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events ML13247A2912013-08-28028 August 2013 First Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051) for Sequoyah Nuclear Plant ML13093A3702013-04-0101 April 2013 Annual Insurance Status Report ML12024A3762011-12-28028 December 2011 State-of-the-Art Reactor Consequence Analyses, Current Status and Next Steps ML1009500642010-04-0101 April 2010 Annual Insurance Status Report ML0909302852009-04-0101 April 2009 Watts Barr (WBN) Nuclear Plants - Insurance Status ML0709306892007-04-0202 April 2007 (Bfn), Sequoyah (Sqn), and Watts Bar (WBN) Nuclear Plants - Insurance Status ML0711705732007-03-28028 March 2007 TVA - Decommissioning Funding Status Report ML0509402222005-03-30030 March 2005 TVA- Decommissioning Funding Status Report - Browns Ferry (Bfn), Sequoyah (SQN) and Watts Bar (WBN) Nuclear Plants ML0330701382003-10-30030 October 2003 TVA - Decommissioning Funding Status Report - Browns Ferry (Bfn), Sequoyah (Sqn), and Watts Bar (WBN) Nuclear Plants - Supplemental Information ML0309202232003-03-31031 March 2003 Decommissioning Funding Status Report for Browns Ferry, Sequoyah, and Watts Bar Nuclear Plants ML0224007812002-01-18018 January 2002 E-mail from Jacob Zimmerman, Bulletin 2001-01 Status Report 2024-03-27
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Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 August 28, 2013 10 CFR 2.202 10 CFR 50.4 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Sequoyah Nuclear Plant, Units 1 and 2 Facility Operating License Nos. DPR-77 and DPR-79 NRC Docket Nos. 50-327 and 50-328
Subject:
First Six-Month Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049) for Sequoyah Nuclear Plant
References:
- 1. NRC Order Number EA-12-049, "Issuance of Order to Modify Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events," dated March 12, 2012 (ML12054A735)
- 2. NRC Interim Staff Guidance JLD-ISG-2012-01, "Compliance with Order EA 049, Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events," Revision 0, dated August 29, 2012 (ML1 2229A1 74)3. NEI 12-06, "Diverse and Flexible Coping Strategies (FLEX) Implementation Guide" Revision 0, dated August 2012 (ML12242A378)
- 4. Letter from TVA to NRC, "Tennessee Valley Authority (TVA) -Initial Status Report in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)," dated October 29, 2012 (ML1 2307A1 04)Mded Printed on. reycled paper 'J U.S. Nuclear Regulatory Commission Page 2 August 28, 2013 5. Letter from TVA to NRC, "Tennessee Valley Authority (TVA) -Overall Integrated Plan in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049) for Sequoyah Nuclear Plant," dated February 28, 2013 (ML1 3063A1 83)On March 12, 2012, the Nuclear Regulatory Commission (NRC) issued an order (Reference 1)to Tennessee Valley Authority (TVA). Reference 1 was immediately effective and directs TVA to develop, implement, and maintain guidance and strategies to maintain or restore core cooling, containment, and spent fuel pool cooling capabilities following a beyond-design-basis external event. Specific requirements are outlined in Attachment 2 of Reference 1.Reference 1 required submission of an initial status report 60 days following issuance of the final interim staff guidance (Reference
- 2) and an overall integrated plan pursuant to Section IV, Condition C. Reference 2 endorses industry guidance document Nuclear Energy Institute (NEI)12-06, Revision 0 (Reference
- 3) with clarifications and exceptions identified in Reference 2.Reference 4 provided the TVA initial status report regarding mitigation strategies.
Reference 5 provided the TVA Sequoyah Nuclear Plant, Units 1 and 2 overall integrated plan.Reference 1 requires submission of a status report at six-month intervals following submittal of the overall integrated plan. Reference 3 provides direction regarding the content of the status reports. The purpose of this letter is to provide the first six-month status report pursuant to Section IV, Condition C.2, of Reference 1, that delineates progress made in implementing the requirements of Reference
- 1. The enclosed report provides an update of milestone accomplishments since submittal of the overall integrated plan, including any changes to the compliance method or schedule.The Enclosure describes the plans that TVA will use to meet the regulatory requirements outlined in Attachment 2 of Reference 1, but does not identify any additional actions to be taken by TVA. Therefore, this letter contains no regulatory commitments.
If you have any question regarding this submittal, please contact Kevin Casey at (423) 751-8523.I declare under penalty of perjury that the foregoing is true and correct. Executed on the 28th day of August 2013.Rrespee y, J. .ea Vi e P sident, Nuclear Licensing Enclosure cc: See Page 3 U.S. Nuclear Regulatory Commission Page 3 August 28, 2013
Enclosure:
Tennessee Valley Authority Sequoyah Nuclear Plant's First Six-Month Status Report for the Implementation of Order EA-12-049, Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events cc (Enclosure):
NRR Director -NRC Headquarters NRO Director -NRC Headquarters NRC Regional Administrator
-Region II NRC Project Manager -Sequoyah Nuclear Plant NRC Senior Resident Inspector
-Sequoyah Nuclear Plant ENCLOSURE TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT'S FIRST SIX-MONTH STATUS REPORT FOR THE IMPLEMENTATION OF ORDER EA-12-049, ORDER MODIFYING LICENSES WITH REGARD TO REQUIREMENTS FOR MITIGATION STRATEGIES FOR BEYOND-DESIGN-BASIS EXTERNAL EVENTS ENCLOSURE Introduction Tennessee Valley Authority developed an Overall Integrated Plan (Reference 1 in Section 8), for Sequoyah Nuclear Plant documenting the diverse and flexible strategies (FLEX), in response to Reference
- 2. This attachment provides an update of milestone accomplishments since submittal of the Overall Integrated Plan, including any changes to the compliance method or schedule.2 Milestone Accomplishments The following milestone(s) have been completed since the development of the Overall Integrated Plan (Reference 1), and are current as of July 30, 2013.FLEX Strategy Evaluation
-Complete 3 Milestone Schedule Status The following provides an update to Attachment 2 of the Overall Integrated Plan. It provides the activity status of each item, and whether the expected completion date has changed. The dates are planning dates subject to change as design and implementation details are developed.
El of 7 Rev iie S"Completion one 0 ion ~StatUs Qi I.Date J U : ., .Submit 60 Day Status Report Oct 2012 Complete Submit Overall Integrated Feb 2013 Complete Implementation Plan Submit,6.Month Updates -Update 1 Aug-2013 Complete Update 2 Feb-2014 Not Started Update 3 Aug-2014 Not Started Update 4 Feb-2015 Not Started Update 5 Aug-2015 Not Started Update 6 Feb-2016 Not Started Update 7 Aug-2016 Not Started FLEX Strategy Evaluation Jun-2013 Complete Walk-throughs or Demonstrations May-2015 1 Not Started Perform Staffing Analysis Jun-2014 Not Started Modficatipns...
- ... .". .i Modifications Evaluation Jun-2013 On Track Oct-2013 Unit 1 N-1 Walkdown Oct-2013 On Track Unit 1 Design Engineering Nov-2014 1 Not Started Unit 1 Implementation Outage Apr-2015 Not Started May-2015 Unit 2 N-1 Walkdown Apr-2014 On Track Unit 2 Design Engineering Nov-2014' Not Started Unit 2 Implementation Outage Dec-2015 Not Started Storooqe Storage Design Engineering
] Sep-20131 I Not Started Storage Implementation Aug-2014' Not Started Procure Apr-2014 On Track Develop Strategies with RRC I Dec-2013 I On Track I Install Off-site Delivery Station Apr-2014 On Track PrOcedurpes PWROG issues NSSS-specific guidelines Jun-2013 Complete Create Site Specific FSIs Jun-2014 On Track Create Maintenance Procedures Jun-2014 Not Started Trajnig.Develop Training Plan Jun-2014 On Track Training Complete Dec-2015 Not Started Unit I FLEX Implementation May-2015 Not Started Unit 2 FLEX Implementation Dec-2015 Not Started Full Site FLEX Implementation Dec-2015 Not Started Submit Completion Report Jan-2016 Not Started Note: 1. These milestones were not included in the February 28, 2013, Overall Integrated Plan.E2 of 7 4 Changes to Compliance Method The following is a list of changes made to the information provided in the February 28, 2013, Overall Integrated Plan (Reference 1). These changes meet the NEI 12-06 compliance method.4.1 Revise Assumption 2 pg E-6, Note 14 pg E-9, Condensate Storage Tank (CST) references pg E-21 and E-23.Install a new qualified Auxiliary Feedwater Supply Tank (AFWST) instead of using the Condensate Storage Tank (CST) for FLEX.4.2 Revise reference to tank connections on pgs E-9, E-21 and E-23.Change inlet and outlet FLEX connections from the CST to the new AFWST.4.3 Revise the Refueling Water Storage Tank (RWST) alternate option for Reactor Coolant System (RCS) inventory on pg E-32.Revised alternate RCS Inventory control flood option utilizing RWST as suction source for High Pressure pump. This source can be accessed utilizing the installed SI piping by routing a suction hose from the existing SIP A inlet drain valve to the High Pressure FLEX Pump inlet. The discharge of the High Pressure FLEX Pump will be routed using high pressure hose to the SIP A discharge piping.4.4 Delete Core Exit Thermocouples (CETs) referenced on pgs E-16, 20, 27, 30, 33, 37, and Open Item 01-15.CETs will not be required for flood.4.5 Revised strategy for Attachment 1A, "Sequence of Events Timeline," pgs EAI-1 to EA1-9, for the following changes: a. Revised and separated Timing and Deployment in both Flood and Non-flood Scenarios.
0 Revised hose deployment based on detailed review.b. Revise 3 MWe DG from available within 40 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br /> to available within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> in the event timelines.
- Taking credit for 3 MWe DG being available at 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> in timelines* Taking credit for 3 MWe DG as a backup for the 225 kva DG E3 of 7
- c. Revise reference to Spent Fuel Pool (SFP) strategy as described below:* Utilize 3 MWe DGs to return normal SFP Cooling Pumps to service at 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.* Primary and secondary strategies swapped* Increase in time for hose deployment to SFP from 6.9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br /> to 15 hours1.736111e-4 days <br />0.00417 hours <br />2.480159e-5 weeks <br />5.7075e-6 months <br />.* Time for boil off of SFP level to reach 10 feet above the SFP racks increase from 37 to 85 hours9.837963e-4 days <br />0.0236 hours <br />1.405423e-4 weeks <br />3.23425e-5 months <br /> (normal decay heat load).* Time for boil off of SFP level to reach 10 feet above the SFP racks increase from 25 to 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br /> (maximum decay heat load).Note -TVA will provide a revised Attachment 1A to reflect these changes on or before the next 6-Month Update due February 28, 2014.5 Need for Relief/Relaxation and Basis for the Relief/Relaxation Sequoyah expects to comply with the order implementation date and no relief/relaxation is required at this time.6 Open Items from Overall Integrated Plan and NRC Evaluation The following tables provide a summary of the open items documented in the Overall Integrated Plan or the NRC Evaluation and the status of each item.Open Item Description Status Number 1 The current CST is a non-seismic tank that is not Started missile protected.
The site is currently pursuing two options; the qualification and hardening of the existing CST or the construction of a new seismically qualified and missile protected CST.One of these options must be completed before the volume of the CST can be credited.2 Liquefaction of haul routes for FLEX will be Started analyzed.3 No detailed analysis has been provided regarding Started initial FLEX fuel supplies to determine a need time for access to 7 day tank supplies or resupply of the 7 day tanks. It is assumed that each FLEX component is stored with a minimum supply of 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> of fuel at constant operation.
This assumption will need to be assessed once all FLEX equipment has been purchased and equipment specifications are known.E4 of 7 Open Item Description Status Number 4 No need time has been identified for action to Open protect containment.
This includes actions to mitigate pressurization of containment due to steaming when RCS vent paths have been established or actions to mitigate temperature effects associated with equipment survivability.
An evaluation will be provided to prove indefinite containment coping.5 A determination of where the Phase 3 equipment Open will be staged will be performed.
6 A strategy for clearing and removing debris will be Started determined.
7 A thorough analysis of the makeup flow rate Started requirements and other equipment characteristics will be performed during the detailed design phase of FLEX.8 The need time for SFP cooling actions (deployment Started of hose, venting, and alignment of makeup) was determined using worst case heat loads. This item will continue to be assessed and later action times may be acceptable.
Note that the timing for this step during an outage is different, but resources will be available to complete the required actions.9 Functional requirements for each of the Phase 3 Started strategies, equipment and components will be completed at a later time and will be provided in the six month updates to the February 28, 2013 submittal.
10 Containment temperature instrumentation is only Started available until flood waters enter the TSC inverter or station battery room. Requirements for NSSS-specific FSGs for containment temperature, as noted in Appendix F of Reference 10, are pending further evaluation.
A method to monitor containment temperature, post-flood, will be developed.
11 The HVAC analysis (Reference) is preliminary Started analysis, and has not been finalized.
12 Verify ability to deploy FLEX equipment to provide Open core cooling in Modes 5 and 6 with SGs unavailable.
13 An evaluation of the impact of FLEX response Started actions on design basis flood mode preparations will be performed.
This evaluation will include the potential for extended preparation time for FLEX.Changes which affect the Integrated Plan will be included in the six month update.E5 of 7 Open Item Description Status Number 14 Perform an alternate cooling source evaluation.
Started The purpose of this analysis is to examine options to utilize alternate water sources to provide continuous sources of water to maintain key safety functions.
15 Perform conceptual hydraulic performance Started analyses.
The purpose of this analysis is to conservatively evaluate hydraulic performance of FLEX systems.16 Develop a mechanical conceptual design report. Started The purpose of this report is to summarize the mechanical conceptual design of the FLEX strategies and identify any required modifications.
17 Perform an electrical conceptual design report. The Started purpose of this report is to summarize the electrical conceptual design of the FLEX strategies and___ identify any required modifications.
18 Perform an RCS makeup analysis.
The purpose of Started this analysis is to define FLEX RCS inventory and___ shutdown margin for Sequoyah.19 Perform an SFP evaluation.
The purpose of this Started analysis is to evaluate the impact of sloshing and time-to-boil in the SFP after an earthquake.
20 Perform a timing and deployment evaluation.
The Started purpose of this analysis is to summarize the FLEX timeline for Sequoyah, identify time constraints and provide for the safety function needs.21 Develop a programmatic control report. The Open purpose of this report is to summarize the need to implement programmatic control of the FLEX program.22 Evaluate the existing extreme hazard analysis and Open planned Near-Term Task Force (NTTF) Tier 1 activities on FLEX strategies to summarize on-going industry activities and the potential to impact the developed FLEX strategies:
23 The time at which the Forebay volume depletes Started needs to be evaluated to determine the time at which replenishment is required.
Based on Reference 10 there is 1,640,000 gallons available in the Forebay. Based on the Sequoyah alternate cooling source evaluation, approximately 640,000 gallons are required at 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> post ELAP.Therefore, it is expected the Forebay volume will supply suction to the TDAFWP for greater than 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> following the ELAP event and replenishment will be required during Phase 3.E6 of 7 Open Item Description Status Number 24 Further analysis will be performed to determine the Closed required timeline for implementing the 3 MWe DGs as an alternate power source for the loads supplied The 3 MWe DGs are by the 225 kva 480 Vac DGs. available within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />. A line will be added to 225kva timing to state that if 225s not available, then 3MWe to be started.25 Complete battery calculations to document Vital Open Battery life of 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> after loss of all AC. A battery calculation has been completed for WBN which is of similar design.26 The CETs are only available until water enters the Closed auxiliary instrument room. A method to monitor CET, post flood, will be evaluated and developed, if CETs will not be required required.
for flood.27 Strategies to address extreme cold conditions on Closed the RWST and/or BATs, including potential need to reenergize heaters, have not been finalized Irrelevant as the BATs will be exhausted by the time the extreme cold has an effect on the tanks.28 Establish a contract with the SAFER team in Started accordance with the requirements of Section 12 of Reference 2.7 Potential NRC Evaluation Impacts There are no potential impacts or Ols to the NRC Evaluation identified at this time.8 References The following references support the updates to the Overall Integrated Plan described in this attachment.
- 1. Letter from TVA to NRC, "Tennessee Valley Authority (TVA) -Overall Integrated Plan in Response to the March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049) for Sequoyah Nuclear Plant," dated February 28, 2013.2. NRC Order Number EA-12-049, "Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events," dated March 12, 2012.E7 of 7