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Results
Other: 0CAN011601, Notification of Full Compliance with NRC Order EA-12-049 Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Bdbees), 0CAN021302, Units 1 and 2 - Overall Integrated Plan in Response to March 12, 2012, Commission Order to Modify Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049), 0CAN021405, Second Six-Month 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 EA-12-049), 0CAN021502, Fourth Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying License with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Bdbees), 0CAN021503, Fourth Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool (SFP) Instrumentation (Order Number EA-12-051), 0CAN081402, Third Six-Month 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 (Bdbees), ML13063A015, ML13241A414, ML13241A415, ML14045A156, ML14140A514, ML15016A433, ML15054A320, ML15236A340
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MONTHYEAR0CAN021302, Units 1 and 2 - Overall Integrated Plan in Response to March 12, 2012, Commission Order to Modify Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)2013-02-28028 February 2013 Units 1 and 2 - Overall Integrated Plan in Response to March 12, 2012, Commission Order to Modify Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049) Project stage: Other ML13063A0152013-02-28028 February 2013 Overall Integrated Plan in Response to March 12, 2012, Commission Order Modifying License with Regard to Reliable Spent Fuel Pool Instrumentation (Order No. EA-12-051) Project stage: Other ML13127A2352013-05-0707 May 2013 Request for Additional Information Email Overall Integrated Plan in Response to the Commission Order Modifying Licenses Project stage: RAI ML13156A3132013-06-26026 June 2013 Request for Additional Information, Overall Integrated Plan in Response to 3/12/12 Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order EA-12-051) Project stage: RAI 0CAN071301, Response to Request for Additional Information for Overall Integrated Plan in Response to the Commission Order Modifying Licenses with Regard to Requirements for Reliable Spent Fuel Pool Instrumentation2013-07-25025 July 2013 Response to Request for Additional Information for Overall Integrated Plan in Response to the Commission Order Modifying Licenses with Regard to Requirements for Reliable Spent Fuel Pool Instrumentation Project stage: Response to RAI ML13241A4142013-08-28028 August 2013 First Six-Month 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 ML13241A4152013-08-28028 August 2013 First 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 ML13281A5022013-10-29029 October 2013 Interim Staff Evaluation and Request for Additional Information Regarding the Overall Integrated Plan for Implementation of Order EA-12-051, Reliable Spent Fuel Pool Instrumentation Project stage: RAI ML14045A1562014-02-20020 February 2014 Mega-Tech Services, LLC Technical Evaluation Report Regarding the Overall Integrated Plan for Arkansas Nuclear One, Units 1 and 2, TAC Nos.: MF0942 and MF0943 Project stage: Other ML14007A4592014-02-25025 February 2014 Interim Staff Evaluation Relating to Overall Integrated Plan in Response to Order EA-12-049 (Mitigation Strategies) Project stage: Acceptance Review 0CAN021405, Second Six-Month 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 EA-12-049)2014-02-27027 February 2014 Second Six-Month 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 EA-12-049) Project stage: Other 1CAN041401, Request for Implementation Date Relief in Response to March 12, 2012,Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Bdbees)2014-04-0808 April 2014 Request for Implementation Date Relief in Response to March 12, 2012,Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Bdbees) Project stage: Request ML14114A6972014-05-20020 May 2014 Relaxation of the Schedule Requirements for 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 ML14140A5142014-05-28028 May 2014 Update Regarding Audit Activities Associated with Order EA-12-049 (Mitigation Strategies) Project stage: Other 0CAN081402, Third Six-Month 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 (Bdbees)2014-08-28028 August 2014 Third Six-Month 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 (Bdbees) Project stage: Other ML15016A4332015-01-16016 January 2015 Commitment Change Notification for NRC Order EA-12-049 Project stage: Other 0CAN021503, Fourth Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool (SFP) Instrumentation (Order Number EA-12-051)2015-02-24024 February 2015 Fourth Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool (SFP) Instrumentation (Order Number EA-12-051) Project stage: Other 0CAN021502, Fourth Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying License with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Bdbees)2015-02-24024 February 2015 Fourth Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying License with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Bdbees) Project stage: Other ML15054A3202015-03-0909 March 2015 Plan for the Onsite Audit Regarding Implementation of Mitigating Strategies and Reliable Spent Fuel Pool Instrumentation Related to Orders EA-12-049 and EA-12-051 Project stage: Other ML15236A3402015-09-0101 September 2015 Report for the Audit Regarding Implementation of Mitigating Strategies and Reliable Spent Fuel Pool Instrumentation Related to Orders EA-12-049 and EA-12-051 Project stage: Other 0CAN011601, Notification of Full Compliance with NRC Order EA-12-049 Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Bdbees)2016-01-12012 January 2016 Notification of Full Compliance with NRC Order EA-12-049 Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Bdbees) Project stage: Other 2014-02-27
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Category:Letter type:
MONTHYEAR2CAN012401, U.S. Additional Protocol2024-01-17017 January 2024 U.S. Additional Protocol 2CAN012403, Supplemental Information - Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 42024-01-11011 January 2024 Supplemental Information - Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4 0CAN012401, Registration of Cask Use2024-01-10010 January 2024 Registration of Cask Use 1CAN122301, Responses to Request for Additional Information for Request for Alternative for Implementation of Extended Reactor Vessel Inservice Inspection Interval (ANO1-ISl-037)2023-12-14014 December 2023 Responses to Request for Additional Information for Request for Alternative for Implementation of Extended Reactor Vessel Inservice Inspection Interval (ANO1-ISl-037) 2CAN112302, Submittal of Amendment 31 to Safety Analysis Report2023-11-16016 November 2023 Submittal of Amendment 31 to Safety Analysis Report 0CAN102303, Registration of Cask Use2023-10-24024 October 2023 Registration of Cask Use 0CAN102302, (ANO) Emergency Plan Revision 49 and Emergency Plan On-Shift Staffing Analysis Revision 32023-10-11011 October 2023 (ANO) Emergency Plan Revision 49 and Emergency Plan On-Shift Staffing Analysis Revision 3 0CAN102301, Evacuation Time Estimate (ETE) Study2023-10-0404 October 2023 Evacuation Time Estimate (ETE) Study 1CAN092301, Supplemental Information - Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 42023-09-21021 September 2023 Supplemental Information - Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4 0CAN092302, Supplement to Request for Alternative Frequency to Containment Unbonded Post-Tensioning System Inservice Inspection (ANO-CISI-002)2023-09-14014 September 2023 Supplement to Request for Alternative Frequency to Containment Unbonded Post-Tensioning System Inservice Inspection (ANO-CISI-002) 2CAN092301, Reply to a Notice of Violation2023-09-0808 September 2023 Reply to a Notice of Violation 0CAN092301, Emergency Plan Implementing Procedure Revision2023-09-0505 September 2023 Emergency Plan Implementing Procedure Revision 0CAN082301, Units 1 and 2 - Changes to the Quality Assurance Program Approval Form for Radioactive Material Package No. 03412023-08-17017 August 2023 Units 1 and 2 - Changes to the Quality Assurance Program Approval Form for Radioactive Material Package No. 0341 2CAN082301, Inservice Inspection Summary Report for the Arkansas Nuclear One, Unit 2, Twenty-Ninth Refueling Outage (2R29)2023-08-10010 August 2023 Inservice Inspection Summary Report for the Arkansas Nuclear One, Unit 2, Twenty-Ninth Refueling Outage (2R29) 0CAN072301, Registration of Cask Use2023-07-18018 July 2023 Registration of Cask Use 1CAN062304, Supplement Related to License Amendment Request to Remove Technical Specification Condition Allowing Two Reactor Coolant Pump Operation2023-06-29029 June 2023 Supplement Related to License Amendment Request to Remove Technical Specification Condition Allowing Two Reactor Coolant Pump Operation 0CAN062301, Status of Actions to Return to Compliance2023-06-26026 June 2023 Status of Actions to Return to Compliance 0CAN062302, Submittal of Revision 22 of the ANO Fire Hazards Analysis2023-06-20020 June 2023 Submittal of Revision 22 of the ANO Fire Hazards Analysis 1CAN062301, Request for Alternative for Implementation of Extended Reactor Vessel Inservice Inspection Interval (ANO1-ISI-037)2023-06-0808 June 2023 Request for Alternative for Implementation of Extended Reactor Vessel Inservice Inspection Interval (ANO1-ISI-037) 0CAN052303, Annual 10 CFR 50.46 Report for Calendar Year 20222023-05-24024 May 2023 Annual 10 CFR 50.46 Report for Calendar Year 2022 0CAN052302, Emergency Plan Rev. 482023-05-11011 May 2023 Emergency Plan Rev. 48 0CAN052301, Units 1 and 2 - Annual Radiological Environmental Operating Report for 20222023-05-0909 May 2023 Units 1 and 2 - Annual Radiological Environmental Operating Report for 2022 2CAN052301, Cycle 30 Core Operating Limits Report (COLR)2023-05-0303 May 2023 Cycle 30 Core Operating Limits Report (COLR) 0CAN042302, Annual Occupational Radiation Exposure Report for 20222023-04-27027 April 2023 Annual Occupational Radiation Exposure Report for 2022 0CAN042301, Radioactive Effluent Release Report for 20222023-04-14014 April 2023 Radioactive Effluent Release Report for 2022 2CAN042301, License Amendment Request to Revise Technical Specifications to Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 42023-04-0505 April 2023 License Amendment Request to Revise Technical Specifications to Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4 1CAN032301, License Amendment Request to Modify the Arkansas Nuclear One, Unit 1, Technical Specification 3.3.1, Reactor Protection System Instrumentation, Turbine Trip Function on Low Control Oil Pressure2023-03-30030 March 2023 License Amendment Request to Modify the Arkansas Nuclear One, Unit 1, Technical Specification 3.3.1, Reactor Protection System Instrumentation, Turbine Trip Function on Low Control Oil Pressure 2CAN032303, Responses to Request for Additional Information Concerning the Request for Alternative Regarding the Half-Nozzle Repair of Reactor Vessel Closure Head Penetration 462023-03-29029 March 2023 Responses to Request for Additional Information Concerning the Request for Alternative Regarding the Half-Nozzle Repair of Reactor Vessel Closure Head Penetration 46 2CAN032304, Supplement to the Request for Alternative Regarding the Half-Nozzle Repair of Reactor Vessel Closure Head Penetration 462023-03-29029 March 2023 Supplement to the Request for Alternative Regarding the Half-Nozzle Repair of Reactor Vessel Closure Head Penetration 46 2CAN032305, 03 Post Examination Analysis2023-03-23023 March 2023 03 Post Examination Analysis 1CAN032302, Inspection Summary Report for the Thirtieth Refueling Outage (1R30)2023-03-20020 March 2023 Inspection Summary Report for the Thirtieth Refueling Outage (1R30) 1CAN012301, Responses to Request for Additional Information for Request for Relief ANO1-ISI-0352023-01-30030 January 2023 Responses to Request for Additional Information for Request for Relief ANO1-ISI-035 2CAN012303, U.S. Additional Protocol2023-01-23023 January 2023 U.S. Additional Protocol 2CAN012302, Relief Request ANO2-RR-23-001, Half-Nozzle Repair of Reactor Vessel Closure Head Penetration 462023-01-20020 January 2023 Relief Request ANO2-RR-23-001, Half-Nozzle Repair of Reactor Vessel Closure Head Penetration 46 1CAN122201, License Amendment Request to Revise Technical Specifications to Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 42022-12-22022 December 2022 License Amendment Request to Revise Technical Specifications to Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4 0CAN122202, Registration of Cask Use2022-12-21021 December 2022 Registration of Cask Use 0CAN122201, Reply to a Notice of Violation; EA-22-0992022-12-0808 December 2022 Reply to a Notice of Violation; EA-22-099 0CAN112201, Request for Alternative Frequency to Containment Unbonded Post-Tensioning System Inservice Inspection (ANO-CISI-002)2022-11-10010 November 2022 Request for Alternative Frequency to Containment Unbonded Post-Tensioning System Inservice Inspection (ANO-CISI-002) 1CAN102202, Application to Remove Technical Specification Condition Allowing Two Reactor Coolant Pump Operation2022-10-31031 October 2022 Application to Remove Technical Specification Condition Allowing Two Reactor Coolant Pump Operation 1CAN102203, Cycle 31 Core Operating Limits Report2022-10-24024 October 2022 Cycle 31 Core Operating Limits Report 1CAN102201, Supplement to Proposed Technical Specifications 3.4.12 and 3.4.13 Revised Dose Calculations2022-10-13013 October 2022 Supplement to Proposed Technical Specifications 3.4.12 and 3.4.13 Revised Dose Calculations 0CAN092201, Supplement to License Amendment Request for Approval of Changes to the Emergency Plan Staffing Requirements2022-09-29029 September 2022 Supplement to License Amendment Request for Approval of Changes to the Emergency Plan Staffing Requirements 1CAN092201, Supplement to Request for Relief from American Society of Mechanical Engineers Section XI Volumetric Examination Requirements - Fifth 10-Year Interval, First Period2022-09-0808 September 2022 Supplement to Request for Relief from American Society of Mechanical Engineers Section XI Volumetric Examination Requirements - Fifth 10-Year Interval, First Period 0CAN082201, License Amendment Request for Approval of Changes to the Emergency Plan Staffing Requirements2022-08-30030 August 2022 License Amendment Request for Approval of Changes to the Emergency Plan Staffing Requirements 1CAN082201, Request for Relief from American Society of Mechanical Engineers Section XI Volumetric Examination Requirements - Fifth 10-Year Interval, First Period2022-08-24024 August 2022 Request for Relief from American Society of Mechanical Engineers Section XI Volumetric Examination Requirements - Fifth 10-Year Interval, First Period 2CAN072201, Response to Request for Additional Information Requests for Relief from American Society of Mechanical Engineers Section XI Volumetric Examination Requirements - Fourth 10-Year Interval, Second and Third Periods2022-07-20020 July 2022 Response to Request for Additional Information Requests for Relief from American Society of Mechanical Engineers Section XI Volumetric Examination Requirements - Fourth 10-Year Interval, Second and Third Periods 0CAN072201, Registration of Cask Use2022-07-14014 July 2022 Registration of Cask Use 0CAN062202, Registration of Cask Use2022-06-0909 June 2022 Registration of Cask Use 1CAN062201, Response to the Request for Additional Information Proposed Technical Specifications 3.4.12 and 3.4.13 Revised Dose Calculations2022-06-0202 June 2022 Response to the Request for Additional Information Proposed Technical Specifications 3.4.12 and 3.4.13 Revised Dose Calculations 1CAN052201, Request for Relief Related to American Society of Mechanical Engineers (ASME) Code Case N-729-6 Augmented Examination Requirements ANO1-ISI-0352022-05-31031 May 2022 Request for Relief Related to American Society of Mechanical Engineers (ASME) Code Case N-729-6 Augmented Examination Requirements ANO1-ISI-035 2024-01-17
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Text
Entergy Operations, Inc.
1448 S.R. 333 Russellville, AR 72802 Tel 479-858-3110 Jeremy G. Browning Site Vice President Arkansas Nuclear One 1CAN041401 April 7, 2014 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk 11555 Rockville Pike Rockville, MD 20852
SUBJECT:
Request for Implementation Date Relief in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (BDBEEs)
(NRC Order EA-12-049)
Arkansas Nuclear One - Unit 1 Docket No. 50-313 License No. DPR-51
REFERENCES:
- 1. NRC Order Number EA-12-049, Order to Modify Licenses with Regard to Requirements for Mitigation Strategies for BDBEEs, dated March 12, 2012 (0CNA031206) (ML12056A045)
- 2. Entergy letter to NRC, Overall Integrated Plan (OIP) in Response to March 12, 2012, Commission Order to Modify Licenses with Regard to Requirements for Mitigation Strategies for BDBEEs (Order Number EA-12-049), dated February 28, 2013 (0CAN021302) (ML13063A151)
- 3. Entergy letter to NRC, First Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for BDBEEs (Order Number EA-12-049), dated August 28, 2013 (0CAN081302) (ML13241A414)
Dear Sir or Madam:
On March 12, 2012, the NRC issued an order (Reference 1) to Entergy Operations, Inc.
(Entergy). Reference 1 was immediately effective and directed Entergy to develop, implement, and maintain guidance and strategies to maintain or restore core cooling, containment, and spent fuel pool cooling capabilities in the event of a BDBEE. Reference 1 required submission of an OIP pursuant to Section IV, Condition C which was originally submitted via Reference 2.
Reference 3 provided Entergys OIP updates for Arkansas Nuclear One, Unit 1 (ANO-1) and Unit 2 (ANO-2). Reference 3 identified the completion dates for ANO-1 and ANO-2 as February 2015, and October 2015, respectively.
Section IV of NRC Order EA-12-049 (Reference 1) states that licensees proposing to deviate from requirements contained in NRC Order EA-12-049 may request that the Director, Office of
1CAN041401 Page 2 of 2 Nuclear Reactor Regulation (NRR), relax those requirements. In accordance with Section IV of NRC Order EA-12-049, Entergy is requesting that the Director, Office of NRR, relax the requirement for completion of full implementation for ANO-1 as prescribed in Section IV.A.2 of NRC Order EA-12-049 to the startup of ANO-2 from refueling outage 2R24 currently scheduled for October 2015.
This letter contains new regulatory commitments which are identified in Attachment 2. If you have any questions regarding this request, please contact Stephenie Pyle at 479.858.4704.
I declare under penalty of perjury that the foregoing is true and correct; executed on April 7, 2014.
Sincerely, Original signed by Jeremy G. Browning JGB/nbm Attachments: 1. Arkansas Nuclear One, Unit 1 (ANO-1) NRC Order EA-12-049 Implementation Date Relief
- 2. List of Regulatory Commitments cc: Mr. Marc L. Dapas Regional Administrator U. S. Nuclear Regulatory Commission, Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 NRC Senior Resident Inspector Arkansas Nuclear One P.O. Box 310 London, AR 72847 U. S. Nuclear Regulatory Commission Attn: Mr. Peter Bamford MS O-8B3 One White Flint North 11555 Rockville Pike Rockville, MD 20852
Attachment 1 to 1CAN041401 Arkansas Nuclear One, Unit 1 (ANO-1) NRC Order EA-12-049 Implementation Date Relief to 1CAN041401 Page 1 of 3 ANO-1 NRC Order EA-12-049 Implementation Date Relief Relaxation Request:
Pursuant to the procedure specified in Section IV of NRC Order EA-12-049, Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (BDBEEs) (Reference 1), Entergy Operations, Inc. (Entergy) hereby submits a request for schedule relaxation from the Order requirements for completion of full implementation for ANO-1 for no later than startup of ANO-2 from refueling outage 2R24 currently scheduled for October 2015.
Order Requirement from Which Relaxation is Requested:
NRC Order EA-12-049,Section IV.A.2 requires completion of full implementation of the Order requirements either no later than two refueling cycles after submittal of the Overall Integrated Plan (OIP), as required by Condition C.I.a, or December 31, 2016, whichever comes first. In accordance with the requirements of the Order, Entergy submitted an update to the OIP which stated ANO-1 would complete all required modifications by February 2015 (scheduled startup from 1R25 - second refueling cycle for ANO-1 after submittal of the original OIP) (References 2 and 3). NRC Order EA-12-049 requires the development, implementation, and maintenance of guidance and strategies to maintain or restore core cooling, containment, and spent fuel pool cooling capabilities in the event of a BDBEE.
As described in the OIP update (Reference 3) ANO-1 plans to utilize ANO-2 charging pumps, powered from a portable diesel generator (PDG), as part of the Phase 2 Diverse and Flexible Coping Strategies (FLEX). In order to complete all modifications for ANO-1, design changes to both of the diverse safety-related switchgear (480-Volt (V) load centers) on ANO-2 are required. Typically, to reduce risk, safety-related switchgear is removed from service on an alternating outage basis. With the ANO-2 outage schedule offset from ANO-1, the modification to the second ANO-2 safety-related switchgear would normally occur during ANO-2 refueling outage 2R24 that is scheduled for completion in October 2015. Based on the ANO-2 refueling schedule, Entergy is requesting relaxation for the final switchgear modification schedule to support ANO-1. The relaxation for ANO-1 would extend the currently required February 2015 date until startup of ANO-2 from refueling outage 2R24 currently scheduled for October 2015.
Justification for Relaxation Request:
The ANO-1 FLEX strategy relies on re-powering one of the three ANO-2 charging pumps (2P-36A, 2P-36B, or 2P-36C) for borated water makeup to the ANO-1 reactor coolant system to support cooldown and depressurization following an extended loss of alternating current power (ELAP). The ANO-2 electrical modifications that are required to support the ANO-1 FLEX strategy are direct connections for a PDG through the ANO-2 2B5 and 2B6 480V load centers (separate safety-related trains).
to 1CAN041401 Page 2 of 3 To provide a primary connection point, modification to the 2B6 load center is planned during the upcoming ANO-2 2R23 refueling outage. The 2B6 load center provides power to the 2P-36B and 2P-36C (swing) charging pumps. The 2B6 load center can also power the 2B5 load center through existing cross-tie breakers. The 2B5 load center provides power to the 2P-36A and 2P-36C (swing) charging pumps. As a result, any of the three ANO-2 charging pumps are capable of being powered via the 2B6 load center to support the ANO-1 FLEX strategy. The same type of modification is planned for ANO-2 load center 2B5 to provide a second connection point allowing powering of equipment from a PDG.
Portions of the ANO-2 load center 2B5 modification are planned to be installed by ANO-1 refueling outage 1R25, including installation of the connection for the FLEX PDG to the cables and routing of the cables in the plant. The remaining work consists of the final connection to the ANO-2 2B5 load center which is planned for ANO-2 refueling outage 2R24. As an interim measure, instructions will be in place by startup from the ANO-1 refueling outage 1R25 for connecting a PDG to the 2B5 load center should the ANO-2 2B6 load center not be capable of being powered for some unforeseen reason during an ELAP (action may not meet the required timeline). The final modification design on the ANO-2 2B5 load center is similar to the one being installed on 2B6 (primary connection point) to minimize possibilities of human performance errors and to support the conservatively established timelines.
The relaxation request is acceptable for the following reasons:
- For the approximate period of eight months between original date and the relaxation date, the ANO-2 switchgear modifications supporting the ANO-1 FLEX strategy will already be in place for 2B6 load center which allows powering any one of the three ANO-2 charging pumps from a PDG. Additionally, the other aspects of compliance with NRC Order EA-12-049 will be complete by 1R25 (e.g., FLEX Support Guidelines, training, equipment staged, and modifications installed). As discussed above, until the redundant 2B5 load center is modified, connection instructions to the 2B5 load center for powering it from a PDG will be available to minimize the risk associated with having only a single quick connection point (2B6 load center) available.
- To modify both of the 2B5 and 2B6 load centers in 2R23 would incur risk to both of the safety-related load centers in a single outage. From an integrated risk perspective this is not typically done. While minor maintenance may be performed on both trains of safety-related equipment in a refueling outage, the risk mitigation plan for each outage has a specific train emphasis for major maintenance and modifications. The refueling outage 2R23 for ANO-2 is focused on green train equipment (2B6) maintenance, and the refueling outage 2R24 for ANO-2 is focused on red train equipment (2B5) maintenance. There is currently a planned bus outage scheduled on the 2B5 load center in the 2R24 outage. To reduce outage risk it is prudent to separate these modifications and perform the 2B5 modifications in 2R24.
to 1CAN041401 Page 3 of 3
- Additional risk would be introduced from the extensive schedule changes required to insert the 2B5 modifications into ANO-2 refueling outage 2R23. The insertion of the 2B5 modifications into 2R23 affects the scheduling of red train testing as well as numerous motor operated valve tests. At this stage in the 2R23 scheduling process, this amount of rescheduling flux introduces the risk of improperly mitigating the comprehensive risk of multiple equipment schedule interactions. With a 2B5 bus outage already scheduled in 2R24, it is prudent to avoid this 2R23 schedule flux risk by performing the 2B5 modifications in 2R24.
==
Conclusion:==
In summary, the 2B5 load center modification to provide diverse electrical connections is currently the only aspect of the ANO-1 FLEX strategy that will not be in full compliance with Reference 1 by the ordered schedule date of February 2015. As a result, full compliance with the mitigation strategies required by Reference 1 and described in Reference 3 for ANO-1 will be delayed until startup from 2R24 currently scheduled for October 2015 (ANO-2 full compliance date). Relief/relaxation from the NRC Order EA-12-049 IV.A.2 requirements is therefore, requested for ANO-1.
References:
- 1. NRC Order Number EA-12-049, Order to Modify Licenses with Regard to Requirements for Mitigation Strategies for BDBEEs, dated March 12, 2012 (0CNA031206) (ML12056A045)
- 2. Entergy letter to NRC, OIP in Response to March 12, 2012, Commission Order to Modify Licenses with Regard to Requirements for Mitigation Strategies for BDBEEs (Order Number EA-12-049), dated February 28, 2013 (0CAN021302)
(ML13063A151)
- 3. Entergy letter to NRC, First Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for BDBEEs (Order Number EA-12-049),
dated August 28, 2013 (0CAN081302) (ML13241A414)
Attachment 2 to 1CAN041401 List of Regulatory Commitments to 1CAN041401 Page 1 of 1 List of Regulatory Commitments The following table identifies those actions committed to by Entergy Operations, Inc. in this document. Any other statements in this submittal are provided for information purposes and are not considered to be regulatory commitments.
TYPE SCHEDULED (Check One) COMPLETION COMMITMENT DATE ONE-TIME CONTINUING (If Required)
ACTION COMPLIANCE As an interim measure, instructions will be in place by startup from the Arkansas Nuclear One (ANO), Unit-1 refueling outage 1R25 for connecting a portable Prior to ANO-1 diesel generator to the 2B5 load center X Startup from 1R25 should the ANO-2 2B6 load center not be (February 2015) capable of being powered for some unforeseen reason during an extended loss of alternating current power.
The 2B5 load center modification will be the only aspect of the ANO-1 Diverse and Flexible Coping Strategies (FLEX) that will not be in full compliance with NRC Order EA-12-049 by the ordered schedule Prior to ANO-1 date of February 2015. Additionally, the X Startup from 1R25 other aspects of compliance with NRC (February 2015)
Order EA-12-049 will be complete by 1R25 (e.g., FLEX Support Guidelines, training, equipment staged, and modifications installed).