Letter Sequence Approval |
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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, ML14002A113, ML14041A192, ML14302A197, 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
ML13182A3962013-07-0505 July 2013
And Watts Bar Nuclear Plant - Online Reference Portal for Review of Mitigation Strategies Submittal in Response to Order EA-12-049
Project stage: Approval
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
ML13252A0082013-08-29029 August 2013
Submittal of the Details of the Planned Drill to the Revised Flood Mode Operation Abnormal Operating Procedure (AOP) N.03, External Flooding
Project stage: Request
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: 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
05000327/LER-2014-001, Regarding Never Performed Technical Specification Surveillance for Common Spare Component Cooling System Pump2014-03-26026 March 2014
Regarding Never Performed Technical Specification Surveillance for Common Spare Component Cooling System Pump
Project stage: Request
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 Nos2014-08-28028 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
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: Other
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-15-037, 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
[Table View] |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 April 29, 2015 Mr. Joseph W. Shea Vice President, Nuclear Licensing Tennessee Valley Authority 1101 Market Street LP 3D-C Chattanooga, TN 37 402
SUBJECT:
SEQUOYAH NUCLEAR PLANT, UNIT 1 - 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" (TAC NO.
MF0864)
Dear Mr. Shea:
By letter dated March 12, 2012 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML12054A735), the U.S. Nuclear Regulatory Commission (NRC) ordered Tennessee Valley Authority (TVA, the licensee), to take certain actions at Sequoyah Nuclear Plant (Sequoyah), Units 1 and 2, associated with the Fukushima Near-Term Task Force Recommendations. Order EA-12-049 directed that actions be taken by licensees to develop and implement strategies to maintain or restore core cooling, containment, and spent fuel pool cooling capabilities during beyond-design-basis external events.
Section IV of the order states that licensees proposing to deviate from requirements contained in NRC Order EA-12-049 may request that the Director, Office of Nuclear Reactor Regulation, relax or rescind certain conditions. By letter dated April 2, 2015 (ADAMS Accession No. ML15096A256), TVA submitted a request for relaxation of the schedule requirement for full implementation for Sequoyah, Unit 1, as prescribed in Section IV A.2 of NRC Order EA-12-049.
That requirement states, in part, "All holders of operating licenses issued under Part 50... shall complete full implementation no later than two (2) refueling cycles after submittal of the overall integrated plan, as required in Condition C.1.a, or December 31, 2016, whichever comes first."
The licensee stated in its request that the second refueling outage will commence in May 2015 for Unit 1 and December 2015 for Unit 2. Therefore, consistent with the schedule requirements of Order EA-12-049, full implementation of the mitigating strategies for Unit 1 must be completed prior to startup from the May 2015 refueling outage. TVA requested that the required date for full implementation for Unit 1 be relaxed until restart following the Unit 2 Cycle 20 refueling outage, which is forecasted for December 2015. The requested schedule relaxation for Unit 1 would allow Sequoyah, Units 1 and 2 to be in compliance with the Order EA-12-049 requirements at the same time.
In its April 2, 2015, letter, TVA provided several reasons in support of its relaxation request for Unit 1. The licensee indicated that Sequoyah is a two unit site with significant physical and procedural interdependencies. The licensee stated that the two units share certain common structures, systems and components (such as essential raw cooling water cross connections, component cooling and direct current buses), a common control room and common operational
staff. The current schedule requirements for compliance with Order EA-12-049 for Unit 1 would result in an interim period of approximately six months during which the two units would not be consistently configured for responding to a beyond-design-basis event at the site. For example, injection points for steam generators and reactor coolant system would not be installed on Unit
- 2. This inconsistency in plant design configuration would complicate the implementation of cooldown requirements in a beyond-design-basis external event, as it would result in conflicting demands on how to use the limited personnel for the event mitigation strategy for both Sequoyah units. This interim period would also require special procedures and training that would create operational challenges on both units with respect to beyond-design-basis external event mitigation actions. Additionally, the licensee noted weather related delays in the construction of the FLEX Equipment Storage Building, Sequoyah, Unit 1 Condensate Storage Tank missile protection wall, and delays in the installation of the FLEX 3MW Diesel Generators.
In light of the facts presented, the NRC staff has determined that the licensee has demonstrated good cause to relax the order implementation date. The NRC staff agrees that required compliance with the Unit 1 schedule requirements of Order EA-12-049 would create a hardship without a compensating increase in the level of safety. The NRC staff also considered that, following the accident at Fukushima Dai-ichi, the NRC concluded that a sequence of events such as the Fukushima Dai-ichi accident is unlikely to occur in the United States, based on the current regulatory requirements and existing plant capabilities. Therefore, the extension of time (approximately six months) for Unit 1 to achieve full implementation of the requirements of the mitigation strategies order until restart following the Unit 2 Cycle 20 refueling outage (December 2015) is justified. Given the plant-specific circumstances at Sequoyah, Unit 1, and that the proposed completion date is prior to the ultimate December 2016 implementation date of the order, the NRC staff approves the relaxation request.
Accordingly, based upon the authority granted to the Director, Office of Nuclear Reactor Regulation, the requirement of the order for full order implementation for Sequoyah, Unit 1 is relaxed until the completion of the Unit 2 Cycle 20 refueling outage scheduled in December 2015. The licensee did not request relaxation of the requirement for full order implementation for Sequoyah, Unit 2, so that requirement, for full implementation by the completion of the Unit 2 December 2015 refueling outage, is unchanged.
If you have any questions, please contact Tony Brown at 301-415-1924.
William M. Dean, Director Office of Nuclear Reactor Regulation Docket No. 50-327 cc: Listserv
ML15104A703 OFFICE NRR/JLD/JOMB/PM NRR/JLD /LA NRR/DORL/LPL2-2/PM NAME TBrown Slent A Hon DATE 04/15/15 04/15/15 04/16/15 OFFICE OE OGC NRR/JLD/O NAME RFretz DCylkowski JDavis DATE 04/16/15 04/23/15 04/24/15
