ML21321A262

License Amendment Request to Revise Reactor Core Safety Limit Supplemental Information

ML21321A262
Person / Time
Site:	North Anna
Issue date:	11/16/2021
From:	Mark D. Sartain Virginia Electric & Power Co (VEPCO)
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
21-370
Download: ML21321A262 (2)

Text

VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 November 16, 2021 U. S. Nuclear Regulatory Commission Serial No.: 21-370 Attention: Document Control Desk NRA/GDM: RO Washington, DC 20555-0001 Docket Nos.: 50-338/339 License Nos.: NPF-4/7 VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION ENERGY VIRGINIA)

NORTH ANNA POWER STATION UNITS 1 AND 2 LICENSE AMENDMENT REQUEST TO REVISE REACTOR CORE SAFETY LIMIT SUPPLEMENTAL INFORMATION By letter dated January 7, 2021, Dominion Energy Virginia submitted a license amendment request (LAR) for North Anna Power Station (NAPS) Units 1 and 2 Facility Operating License Numbers NPF-4 and NPF-7, respectively. The proposed change would revise the TS Reactor Core Safety Limit (SL) 2.1.1.2 to reflect the peak fuel centerline melt temperature specified in WCAP-17642-P-A, Revision 1, "Westinghouse Performance Analysis and Design Model (PADS)."

Pursuant to discussions with the NRC Senior Project Manager for NAPS, additional information is being provided herein regarding the implementation plan for the requested amendments following their approval by the NRC. Specifically, the NAPS Updated Final Safety Analysis Report (UFSAR), Sections 4.2.1.1.1, "Fuel Rods," 4.4.1.2, "Fuel Temperature Design Basis,"

and 4.4.2.2.6, "Treatment of Peaking Factors," will be revised as part of the implementation plan for the license amendments following their issuance to include the revised fuel melt safety limit and its technical basis. Furthermore, the UFSAR will be reviewed in its entirety and additional UFSAR changes will be implemented, if required, to reflect the revised peak fuel centerline melt temperature limit.

Should you have any questions or require additional information, please contact Ms. Erica N. Combs at (804) 273-3386.

Respectfully,

~v{-

Mark D. Sartain Vice President - Nuclear Engineering and Fleet Support COMMONWEALTH OF VIRGINIA COUNTY OF HENRICO The foregoing document was acknowledged before me, in and for the County and Commonwealth aforesaid, today by Mr. Mark D. Sartain, J

who is Vice President- Nuclear Engineering and Fleet Support, 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 /{p ti. day ofnv~e<, 2021.

My Commission Expires: Q~V,.b-r 3 ~ e.01.3.

GARY DON MILLER Notary Public Commonwealth of Virginia Reg. # 7629412 My Commission Expires August 31, 2~

Serial No.21-370 Docket Nos. 50-338/339 Page 2 of 2 Commitment contained in this letter:

Update the NAPS UFSAR to include the revised fuel melt safety limit and its technical basis as part of the implementation plan for the amendments approving the revised peak fuel centerline melt temperature limit.

cc: U.S. Nuclear Regulatory Commission - Region II Marquis One Tower 245 Peachtree Center Avenue, NE Suite 1200 Atlanta, GA 30303-1257 State Health Commissioner Virginia Department of Health James Madison Building - 7th floor 109 Governor Street Suite 730 Richmond, VA 23219 Mr. G. Edward Miller NRC Senior Project Manager - North Anna U.S. Nuclear Regulatory Commission One White Flint North Mail Stop 09 E-3 11555 Rockville Pike Rockville, MD 20852-2738 Mr. L. John Klos NRC Project Manager - Surry U.S. Nuclear Regulatory Commission One White Flint North Mail Stop 09 E-3 11555 Rockville Pike Rockville, MD 20852-2738 Old Dominion Electric Cooperative (Electronically Distributed)

NRC Senior Resident Inspector North Anna Power Station