ML22179A368

Supplement to Attachment 4 of License Amendment Request - Technical Specifications Nozzle Blockage Testing Requirement Change for Reactor Building Spray System (ML22115A104)

ML22179A368
Person / Time
Site:	Summer
Issue date:	06/27/2022
From:	Gerald Bichof Dominion Energy South Carolina
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
22-034A
Download: ML22179A368 (4)

Text

Dom inion Ene rgy Sou th Carol ina, Inc.

5000 Dom inion Boulevard, Glen Allen, VA 23060 Dominion DominionEnergy.corn Energy!

June 27, 2022 Attn: Document Control Desk Serial No.: 22-034A U.S. Nuclear Regulatory Commission NRA/YG: RO Washington, DC 20555-0001 Docket No.: 50-395 License No.: NPF-12 DOM INION ENERGY SOUTH CAROLINA VIRG IL C. SUMMER NUCLEAR STATION UNIT 1 SUPPLEMENT TO ATTACHMENT 4 OF LICENSE AMENDMENT REQUEST -

TECHNICAL SPECIFICATIONS NOZZLE BLOCKAGE TESTING REQUIREMENT CHANGE FOR REACTOR BUILDING SPRAY SYSTEM (ML22115A104)

Pursuant to the provisions of 10 CFR 50.90, Dominion Energy South Carolina, Inc.

(DESC) submitted a License Amendment Request (LAR}, [ADAMS Accession No. ML22115A104], for Virgil C. Summer Nuclear Station (VCSNS) Unit 1 on April 22, 2022.

The LAR would modify the VCSNS Technical Specifications (TS) for the Reactor Building (RB) Spray System. This letter supplements the second page (proposed TS Bases change insert) of Attachment 4 of the LAR as shown in Attachment 1 of this letter.

In accordance with 10 CFR 50.91, a copy of this supplement is being provided to the designated South Carolina State Official.

Should you have any questions regarding this submittal, please contact Yan Gao at (804) 273-2768.

Respectfully,

/ ~~ iJ,1}£~

cfefafcrf.sischof (>

Senior Vice President - Nuclear Operations and Fleet Performance COMMONWEALTH OF VIRGINIA COUNTY OF HENRICO The foregoing document was acknowledged before me, in and for the County and Commonwealth aforesaid, today by Gerald T. Bischof, who is Senior Vice President - Nuclear Operations and Fleet Perfonnance of Dominion Energy South Carolina, Inc. He has affirmed before me that he is duly authorized to execute and file the foregoing document on 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 27f'1. day of ~ 2022.

My Commission Expires: I

\'2 l~ r 2-~

C yC

Serial No. 22-034A Docket No. 50-395 Page 2 of 2

Attachment:

1. Supplement Detail cc: U.S. Nuclear Regulatory Commission, Region II Marquis One Tower 245 Peachtree Center Avenue, NE Suite 1200 Atlanta, Georgia 30303-1257 Mr. G. Edward Miller NRC Senior Project Manager U.S. Nuclear Regulatory Commission One White Flint North Mail Stop 09 E-3 11555 Rockville Pike Rockville, Maryland 20852-2738 NRC Senior Resident Inspector V.C. Summer Nuclear Station Ms. Anuradha Nair-Gimmi Bureau of Environmental Health Services South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, SC 29201 Mr. G. J. Lindamood Santee Cooper - Nuclear Coordinator 1 Riverwood Drive Moncks Corner, SC 29461

Serial No. 22-034A Docket No. 50-395 Attachment 1 SUPPLEMENT DETAIL Virgil C. Summer Nuclear St ation (VCSNS} Unit 1 Dominion Energy Sout h Carolina, Inc. (DESC)

Serial No. 22-034A Docket No. 50-395 Attachment 1 : page 1 of 1 Serial No.22-034 Attachment Docket No. 5~395 EnGles1:1re4: Page 2 of 2 Insert 1:

Surveillance Requirement 4.6.2.1.d requires verification that each spray nozzle is unobstructed following activities that could cause nozzle blockage. Due to the passive design of the nozzle, confirmation of operability following activities that could result in nozzle blockage is considered adequate to detect obstruction of the nozzles. Normal plant operation and maintenance activities are not expected to trigger performance of this surveillance requirement. However, activities, such as an inadvertent spray actuation that causes fluid flow through the nozzles, a m ajor configuration change, or a loss of foreign material control when working within the respective system boundary, shall be evaluated to detemline if s1::1f\*eillanee perfoFFFlanee is required. *

• performance is fequirecf, the evaluation will detennine the ap opriate method for performing the surveillance. Examples of possible test method include, but are not limited to, visual inspection, air or smoke or equivalent flow test, a draining and flushing the filled portions of the system inside containment.

may require surveillance performance_ An evaluation, based on the specific situation.