ML22303A019

Annual Submittal of Technical Specification Bases Changes Pursuant to Technical Specification 5.5.13.d

ML22303A019
Person / Time
Site:	North Anna
Issue date:	10/09/2022
From:	Scott(Ois) Morris Virginia Electric & Power Co (VEPCO)
To:	Document Control Desk, Office of Nuclear Reactor Regulation
Shared Package
ML22303A018	List: ML22303A019
References
22-304
Download: ML22303A019 (1)

Text

• . VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 October 9, 2022 U.S. Nuclear Regulatory Commission Serial No.22-304 Attention: Document Control Desk NAPS/RAP RO Washington, D.C. 20555 Docket Nos. 50-338 50-339 License Nos. NPF-4 NPF-7 VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION ENERGY VIRGINIA)

NORTH ANNA POWER STATION UNITS 1 AND 2 ANNUAL SUBMITTAL OF TECHNICAL SPECIFICATION BASES CHANGES PURSUANT TO TECHNICAL SPECIFICATION 5.5.13.d Pursuant to T~chnical Specification 5.5.13.d, "Technical Specifications (TS) Bases Control Program," Dominion Energy Virginia hereby submits changes to the Bases of the Technical Specifications implemented during the period of October 1, 2021, through September 30, 2022. A summary of these TS Bases changes is provided in the Attachment to this letter. Enclosed is an electronic copy (CD) of the entire TS Bases through Revision 69 for your information.

• Bases changes to the Technical Specifications that were submitted to the NRC for information with their associated License Amendment Request (LAR.) transmittals, submitted pursuant to .10 CFR 50.90, were reviewed, and approved with the LAR by the Facility Safety Review Committee. These TS Bases changes have been implemented with the respective approved License Amendments. A summary of these TS Bases changes associated with License Amendments is also provided *in the Attachment to this letter..

If you have any questions regarding this submittal, please contact Mr. Marcus Hofmann at (540) 894-2100.

Sincerely,

<ild;JY.Jh;P s: W. Morris Director, Nuclear Safety and Licensing

Serial No.22-304 Docket Nos.: 50-338/339 Annual Summary of TS Bases Changes - Rev 69 Page 2 of 3

Attachment:

• Summary of TS Bases Changes

Enclosure:

CD of Current TS Bases (Revision 69)

Commitments made in this letter: None cc: U.S. Nuclear Regulatory Commission Region II Marquis One Tower 245 Peachtree Center Avenue, NE, Suite 1200 Atlanta, Georgia 30303-1257 Mr. Marcus Harris (without Enclosure)

Old Dominion Electric Cooperative Innsbrook Corporate Center 4201 Dominion Blvd.

Suite 300 Glen Allen, Virginia 23060 State Health Commissioner (without Enclosure)

Virginia Department of Health James Madison Building - 7th Floor 109 Governor Street Room 730 Richmond, Virginia 23219 Mr. G. E. Miller NRC Project Manager U. S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Mail Stop 09 E-3 Rockville, Maryland 20852-2738

Serial No.22-304 Docket Nos.: 50-338/339 Annual Summary of TS Bases Changes - Rev 69 Page 3 of 3 Mr. L. John Klos NRG Project Manager - Surry U. S-. Nuclear Regulatory Commission One White Flint North Mail Stop 09 E"3 11555 Rockville Pike Rockville, Maryland 20852-2738 NRG Senior Resident Inspector (without Enclosure)

North Anna Power Station

Serial No.22-304 Docket Nos.: 50-338/339 ATTACHMENT

SUMMARY

OF TS BASES CHANGES VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION ENERGY VIRGINIA)

NORTH ANNA POWER STATION UNITS 1 AND 2

Serial No. 21---304 Docket Nos.: 50-338/339 Attachment Page 1 of 1 TS BASES CHANGES ASSOCIATED WITH LICENSE AMENDMENTS TS Bases 3.1.8, Primary Grade Water Flow Path Isolation Valves The proposed change revises the Technical Specification (TS) 3.1.8.A.2 Completion Time to isolate Primary Grade (PG) water from the Reactor Coolant System (RCS) within 15 minutes after entering Mode 3, 4, or 5. Specifically, the proposed change would add a new requirement to isolate PG water from the RCS following a reactor shutdown from Mode .l2 within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> while continuing to require isolation of PG within 15 minutes after a planned dilution or makeup activity while the reactor is in Mode 3, 4, or 5.

The Bases changes noted above were submitted to the NRG by Dominion submittal dated May 6, 2021 and incorporated into the Bases for North Anna Units 1 and 2 on May 24, 2021, upon NRG approval and implementation of the associated Technical Specification changes (Amendment 290 for Unit 1 and Amendment 273 for Unit 2 issued on February 23, 2022).

Adopting TSTF-569 - Revision of Response Time Testing Definitions This TS change revises the TS Definition 1.13 ENGINEERED SAFETY FEATURES RESPONSE TIME and the TS Definition 1.28 REACTOR TRIP SYSTEM RESPONSE TIME consistent with TSTF-569. TS Bases 3.3.1 and 3.3.2 are also being revised to add supporting detail and references in accordance with the approved TSTF. TSTF-569, Revision* 2, "Revise Response Time Testing Definition," (ADAMS Accession No. ML19176A034) and the model safety evaluation dated August 14, 2019 (EPID L-2018-PMP-0002) provide the technical justification.

The Bases changes noted above were submitted to the NRG by Dominion. submittal dated October 7, 2021 and incorporated into the Bases for North Anna Units 1 and 2 on May 24, 2021, upon NRG approval and implementation of the associated Technical Specification changes (Amendment 291 for Unit 1 and Amendment 274 for Unit 2 issued on March 1, 2022).

TS BASES CHANGES NOT ASSOCIATED WITH LICENSE AMENDMENTS None.