ML19249B764

Independent Spent Fuel Storage Installation (Isfsi); North Anna, Units 1 and 2 and ISFSI; and Surry, Units 1 and 2 and ISFSI - License Amendment Request to Adopt Emergency Action Level Schemes Pursuant to NEI 99-01, Rev. 6.

ML19249B764
Person / Time
Site:	Millstone, Surry, North Anna, 07200002, 07200055
Issue date:	08/29/2019
From:	Stoddard D Dominion Energy Nuclear Connecticut, Virginia Electric & Power Co (VEPCO)
To:	Document Control Desk, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
References
19-296
Download: ML19249B764 (5)

Text

VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 August 29, 2019 10 CFR 50.90 U. S. Nuclear Regulatory Commission Serial No.: 19-296 Attention: Document Control Desk NRA/DEA: R2' Washington, DC 20555-0001 Docket Nos.: 50-336/423 50-338/339 50-280/281 72-2/16/4 7/55/56 License Nos.: DPR-65 NPF-49 NPF-4/7 DPR-32/37 SNM-2501/2507 VIRGINIA ELECTRIC AND POWER COMPANY DOMINION ENERGY NUCLEAR CONNECTICUT, INC.

MILLSTONE POWER STATION UNITS 2 AND 3 AND INDEPENDENT SPENT FUEL STORAGE INSTALLATION (ISFSI)

NORTH ANNA POWER STATION UNITS 1 AND 2 AND ISFSI SURRY POWER STATION UNITS 1 AND 2 AND ISFSI LICENSE AMENDMENT REQUEST TO ADOPT EMERGENCY ACTION LEVEL (EAL) SCHEMES PURSUANT TO NEI 99-01, REV. 6 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION By letter dated January 4, 2019 (Agencywide Documents Access and Management System (ADAMS) Accession Number ML19011A237), Dominion Energy Nuclear Connecticut, Inc. (DENG) and Virginia Electric and Power Company submitted a request for a change to the emergency action level schemes for Millstone Power Station (MPS) - Units 2 and 3, North Anna Power Station (NAPS) - Units 1 and 2, and Surry Power Station (SPS) - Units 1 and 2.

The NRC staff has reviewed the submittal and determined that additional information is needed to complete their review. In an email from Ed Miller (NRC) to Craig Sly (Dominion Energy) dated June 18, 2019, the NRC provided specific requests for additional information (RAls) to support their review of the change to the MPS, NAPS and SPS EAL schemes.

A draft version of these RAls (ADAMS Accession No. ML19162A005) was discussed with Mr. Ed Miller and other NRG staff during an RAI clarification call that was held on June 13, 2019. A date of July 30, 2019 was originally agreed upon for submittal of the response to the EAL Scheme Change RAls. However, an extension to August 29, 2019 was subsequently agreed upon between the NRG and Dominion Energy. A- x. £-J.£5 fVµ/~S7-~

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Serial No.19-296 Docket Nos.: 50-336/423/338/33 9/280/281 72-2/16/4 7 /55/56 Response to RAJ - EAL Scheme Change Page 2 of 4 Dominion's response to the NRC's RAls is provided in the following

Enclosures:

Enclosure 1: Response to EAL Scheme Change RAls Enclosure 2: SPS Fuel Clad Loss C.6 Deviation Enclosure 3: MPS EAL Technical Bases Documents - Final (Updated)

Enclosure 4: NAPS EAL Technical Bases Document - Final (Updated)

Enclosure 5: SPS EAL Technical Bases Document - Final (Updated)

Enclosure 6: MPS2 Comparison Matrix - RCS Pot. Loss A.1 Enclosure 7: Summary of Calculations - Updated The information provided in this letter does not affect the conclusions of the significant hazards consideration or the environmental assessment included in the April 30, 2018 LAR.

Should you have any questions or require additional information, please contact Ms. Diane E. Aitken at (804) 273-2694.

Sincerely, Daniel G. Stoddard Senior Vice President and Chief Nuclear Officer Dominion Energy Nuclear Connecticut, Inc.

Virginia Electric and Power Company CRAIG D SLY Notary Public Commonwealth of Virginia Reg. # 7518653 0 COMMONWEALTH OF VIRGINIA My Commission Expires December 31, 20!.

COUNTY OF HENRICO The foregoing document was acknowledged before me, in and for the County and Commonwealth aforesaid, today by Daniel G Stoddard, who is Senior Vice President and Chief Nuclear Officer, of Dominion Nuclear Energy Connecticut, Inc. and 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 those companies, and that the statements in the document are true to the best of his knowledge and belief.

Acknowledged before me this

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Serial No.19-296 Docket Nos.: 50-336/423/338/339/280/281 72-2/16/4 7/55/56 Response to RAI - EAL Scheme Change Page 3 of 4 Commitments contained in this letter: None

Enclosures:

1. Response to EAL Scheme Change RAls

2. SPS Fuel Clad Loss C.6 Deviation

3. MPS EAL Technical Bases Documents - Final (Updated)

4. NAPS EAL Technical Bases Document - Final (Updated)

5. SPS EAL Technical Bases Document - Final (Updated)

6. MPS2 Comparison Matrix - RCS Pot. Loss A.1

7. Summary of Calculations - Updated cc: U. S. Nuclear Regulatory Commission, Region I Attn.: Regional Administrator 2100 Renaissance Blvd.

Suite 100 King of Prussia, Pennsylvania 19406-2713 U. S. Nuclear Regulatory Commission, Region II Attn.: Regional Administrator Marquis One Tower 245 Peachtree Center Ave., NE, Suite 1200 Atlanta, Georgia 30303-1257 Director, Division of Spent Fuel Storage and Transportation Office of Nuclear Material Safety and Safeguards U. S. Nuclear Regulatory Commission Washington, DC 20555-0001 Ms. Yen-Ju Chen NRC Senior Project Manager U.S. Nuclear Regulatory Commission Two White Flint North Mail Stop 4B34 11545 Rockville Pike Rockville, MD 20852-2738 Mr. J. N. Nguyen NRC Senior Project Manager U. S. Nuclear Regulatory Commission Two White Flint North

Serial No.19-296 Docket Nos.: 50-336/423/338/339/280/281 72-2/16/4 7/55/56 Response to RAJ - EAL Scheme Change Page 4 of 4 Mail Stop 4B34 11545 Rockville Pike Rockville, MD 20852-2738 Mr. R. V. Guzman NRC Senior Project Manager Millstone Units 2 & 3 U. S. Nuclear Regulatory Commission One White Flint North Mail Stop 08 C-2 11555 Rockville Pike Rockville, MD 20852-2738 Mr. G. Edward Miller NRC Senior Project Manager North Anna and Surry U. S. Nuclear Regulatory Commission One White Flint North Mail Stop 09 E-3 11555 Rockville Pike Rockville, MD 20852-2738 Mr. Marcus Harris Old Dominion Electric Cooperative Innsbrook Corporate Center 4201 Dominion Blvd. - Suite 300 Glen Allen, VA 23060 Director, Radiation Division Department of Energy and Environmental Protection 79 Elm Street Hartford, CT 06106-5127 State Coordinator of Emergency Management Virginia Department of Emergency Management 10501 Trade Court North Chesterfield, VA 23236 NRC Senior Resident Inspector Millstone Power Station NRC Senior Resident Inspector North Anna Power Station NRC Senior Resident Inspector Surry Power Station

Serial No.19-296 Docket Nos.: 50-336/423/338/339/280/281 72-2/16/47/55/56 Response to RAI - EAL Scheme Change be Page 3 of 3 VERIFICATION OF ACCURACY (CONT'D.):

6. Engineering Calculations for Letdown Response: PA-0234, Rev. 1 "Post-Accident Letdown Radiation Monitor Response for North Anna"; PA-0236, Rev. 0, Add. A "Post-Accident Letdown Radiation Monitor Response for Surry."

7. NUREG-1228, pages 1-2, 1-6 and 1-8.

8. LA7660961, "Prepare an EAL change (i.e. performed under a 50.54(q)) to change the current EAL.

ACTION PLAN/COMMITMENTS (STATED OR IMPLIED):

None REQUIRED CHANGES TO FSAR, UFSAR, QA TOPICAL REPORT OR ISFSI FSAR:

None