ML11314A069

Independent Spent Fuel Storage Installation, Revised Long-Term Actions Commitment List

ML11314A069
Person / Time
Site:	North Anna
Issue date:	11/07/2011
From:	Grecheck E Virginia Electric & Power Co (VEPCO)
To:	Document Control Desk, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
References
11-520D
Download: ML11314A069 (5)

Text

VIRGINIA ELECTRIC AND POWER COMPANY I RICHMOND, VIRGINIA 23261 November 7, 2011 10 CFR 100, Appendix A U.S. Nuclear Regulatory Commission Serial No.: 11-520D Attention: Document Control Desk NL&OS/GDM R1 Washington, DC 20555 Docket Nos.: 50-338/339 72-16/72-56 License Nos.: NPF-4/7 SNM-2507 VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION UNITS 1 AND 2 INDEPENDENT SPENT FUEL STORAGE INSTALLATION REVISED LONG-TERM ACTIONS COMMITMENT LIST By letter dated November 3, 2011 (Serial No. 11-520C), Virginia Electric and Power Company (Dominion) submitted a compilation of long-term programmatic actions that Dominion committed to perform to address the August 23, 2011 earthquake. The compilation includes the scheduled completion dates for the actions, as well as the associated letters that contain the commitments as applicable. During subsequent conference calls between Dominion and the NRC staff, in which the long-term action commitments were discussed, it became evident that several of the commitments contained in the list require revision to more clearly reflect the scope of the actions to be taken. Consequently, Dominion has revised the Long-Term Actions Commitment List that was contained in the November 3, 2011 letter to provide clarifying detail for certain actions included in the list. The Long-Term Actions Commitment List provided in the attachment updates and supersedes the long-term commitments previously provided in earlier Dominion correspondence associated with the August 23, 2011 earthquake.

If you have any questions or require additional information, please contact Mr. Gary D..Miller at (804) 273-2771.

Sincerely, E. S. Grecheck Vice President - Nuclear Development ViCKI L. HULL,

Attachment:

. Notary Public Commonwealth of Virginia Long-Term Actions Commitment List yC s1405420 1 My Commission Expires Mavy131.:2014],

COMMONWEALTH OF VIRGINIA COUNTY OF HENRICO The foregoing document was acknowledged before me, in and for the County and Commonwealth aforesaid, today by E. S. Grecheck who is Vice President - Nuclear Development, of Virginia Electric and Power Company. He has affirmed before me that he is duly authorized to execute and file the foregoing document in behalf of that Company, and that the statements in the document are true to the best of his knowledge and belief.

Acknowledged before me this I-IZ day of4*. kj2 , 2011.

My Commission Expires: . /.

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Serial Number 11-520D Docket Nos. 50-338/339/72-16/72-56 Page 2 of 2 cc: Regional Administrator U.S. Nuclear Regulatory Commission - Region II Marquis One Tower 245 Peachtree Center Ave., NE Suite 1200 Atlanta, Georgia 30303-1257 NRC Senior Resident Inspector North Anna Power Station M. Khanna Branch Chief - Mechanical and Civil Engineering Branch U. S. Nuclear Regulatory Commission One White Flint North Mail Stop 09 E-3 11555 Rockville Pike Rockville, MD 20852-2738 R. E. Martin NRC Project Manager U. S. Nuclear Regulatory Commission One White Flint North Mail Stop 08 G-9A 11555 Rockville Pike Rockville, MD 20852-2738 P. G. Boyle NRC Project Manager U. S. Nuclear Regulatory Commission One White Flint North Mail Stop 08 G-9A 11555 Rockville Pike Rockville, MD 20852-2738 J. B. Davis NRC Senior Project Manager U. S. Nuclear Regulatory Commission One White Flint North Mail Stop EBB-E3-D2M 11555 Rockville Pike Rockville, MD 20852-2738 J. E. Reasor, Jr.

Old Dominion Electric Cooperative Innsbrook Corporate Center 4201 Dominion Blvd.

Glen Allen, Virginia 23060

Serial No. 11-520D Docket Nos. 50-338/339/72-16/72-56 Attachment Long-Term Actions Commitment List Virginia Electric and Power Company (Dominion)

North Anna Power Station Units 1 and 2

Serial No. 11-520D Docket Nos. 50-338/339/72-16/72-56 Attachment Page 1 of 2 Long-Term Actions Commitment List North Anna Power Station Units I and 2 Item Commitment Scheduled No. Completion Date Dominion will perform long-term evaluations of plant structures, systems and components in accordance anomalies identified during with RG 1.167/EPRI the evaluations will beNP-6695, entered Section 6.3. Any into the corrective April 30, 2013 action system and evaluated for extent of condition.

Dominion will develop a plan to characterize the seismic source and any 2 special ground motion effects due to the relative locations of the fault and the March 31, 2012 site and will update the NRC accordingly.

Dominion will revise the North Anna Updated Final Safety Analysis Report to document:

a. The recorded August 23, 2011 seismic event. April 30, 2012

b. A summary of the evaluation and results of the seismic analysis of April 30, 2013 the recorded event completed per RG 1.167/EPRI NP-6695.

3 c. Design controls on seismic margin management (i.e., the Seismic Margin Management Plan). April 30, 2012

d. Incorporation of Regulatory Guide (RG) 1.166, "Pre-Earthquake Planning and Immediate Nuclear Power Plant Operator Post-Earthquake Actions," and RG 1.167, "Restart of a Nuclear Power December 31, 2012 Plant Shut Down by a Seismic Event," into the North Anna licensing basis.

Dominion will implement a design change to replace the existing seismic equipment and Main Control Room indication with upgraded and enhanced seismic monitoring instrumentation equipment, which includes installation of a December 31, 2012 permanent, free field seismic monitor. Permanent, seismically qualified (subject to receipt 4 backup power to a new Seismic Monitoring Panel will also be installed of seismic including a backup battery power supply. The seismic instrumentation will be monitoring installed and maintained in accordance with RG 1.12, Rev 2, NuclearPower equipment and Plant Instrumentation for Earthquakes. The project will also install seismic outage schedules) recording instrumentation at the station Independent Spent Fuel Storage Installation (ISFSI) pad.

Dominion will perform a re-evaluation of the plant equipment identified in the 5 IPEEE review with HCLPF capacity <0.3g, which will include an assessment March 31, 2013 of potential improvements.

Dominion will develop a plan with the NSSS vendor consisting of additional 6 evaluations or inspections, as warranted, to assure long term reliability of the February 29, 2012 reactor internals.

Dominion will perform a comparison of the calculated load from the August 7 23, 2011 earthquake and the existing leak-before-break (LBB) analysis and March 31, 2013 submit the results.

In accordance with the MRP-227 Dominion will perform inspections at North Anna Power Station in accordance inspection plan, with the latest MRP-227 revision approved by the NRC. which will be provided by March 31, 2013

Serial No. 11-520D Docket Nos. 50-338/339/72-16/72-56 Attachment Page 2 of 2 Long-Term Actions Commitment List North Anna Power Station Units 1 and 2 Item Commitment Scheduled No. Completion Date Dominion will re-evaluate the Time-Limiting Aging Analyses (TLAAs) that include seismic inputs to either: 1) quantitatively demonstrate that the TLAAs March 31, 2013 are still bounding, or 2) re-analyze the TLAAs, based on the August 23, 2011 earthquake.

Dominion will implement a long term Seismic Margin Management Plan to address the impact of the August 23, 2011 earthquake. Specifically, to ensure adequate seismic margins are maintained for plant SSCs, Dominion will revise the design change process for North Anna Power Station to require

,explicit evaluation of plant modifications for the effects of the August 23, 2011 earthquake using In-Structure Response Spectra (ISRS) for the event for the Containment, Auxiliary Building, and other buildings containing safety related December 31, 2011 SSCs developed based on actual time-histories recorded during the/event. In support of future plant design changes, the evaluation of plant SSCs will 10 require design verification and code compliance with the stresses, loads, accelerations, and displacements generated from the analysis with the design basis ISRS and the analysis with the ISRS for the August 23, 2011 earthquake, whichever are higher.

Dominion will provide 30-days prior written notification to the NRC if it determines the Seismic Margin Management Plan is no longer required based on the implementation of comparable actions as part of the resolution N/A of the NRC's recommendations emanating from the Fukushima Daiichi Task Force and/or Generic Issue (GI)-199.