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 Ca rolina, Inc.

5000 Dom in ion Boulevard, Glen A llen, V A 23060 Dominion Domi n ionE n e rgy.corn Energy !

June 27, 2022

Attn: Document Control Desk Serial No.: 22 - 034A U.S. Nuclear Regulatory Commis sion NRA/YG: RO Washington, DC 20555-0001 Docket No.: 50 - 395 License No.: NP F-12

DOM INI ON ENER GY SOUT H CAR OLI NA VI RG IL C. SU MMER N UC LEAR ST A TIO N UNIT 1 SU PPLEMEN T TO A TT ACHMENT 4 O F L IC ENSE AMENDMEN T REQU EST -

T ECHN ICAL SPEC IFIC A T IONS NOZZLE B L OCKAGE T EST ING REQUI REMEN T CHANGE FOR REA CT OR B UIL D ING SP RAY SY STEM (ML22 115A 104)

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 Nucle a r 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 lette r supplements the second page (proposed TS B ases change insert) of Attachment 4 of the LAR as shown in Attachment 1 of this lette r.

In accordance with 10 CFR 50.91, a copy of this supplem e nt 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

COMMONWEAL TH OF VIRGINIA

COUNTY OF HENRICO

The forego ing 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 documen t 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 2 7f'1. day of ~ 2022.

My Commission Expires: \\'2 l ~ r I 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

Attach m e n t 1

S U PP L EMENT DETA IL

Virg il C. Summer Nucl ea r Sta tion (VC SNS } Unit 1 Dominion Energy S ou th Carolina, Inc. (DES C)

Serial No. 22-034A Docket No. 50-395 Attachment 1 : page 1 of 1

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

Insert 1:

Surveillance Requirement 4.6.2.1.d requires verification that each spray no zzle is unobstructed follow ing activities that could cause no zzle blockage. Due to the passive design of the nozz le, confirm a tion of operability following activities that could result in no zzle b lock age is considered adeq u ate to detect obstruction of the no zzles. Normal plant oper ation and maintenance activities are not exp ected to trigger performance of this surveillance requirement. However, activities, such as an inadvertent spray actuation that causes fluid flow through the nozzl es, a m ajo r confi gur atio n change, or a loss of foreign material control when working within the respective system boundary, shall be evaluated to detemline if s1::1f\\*eillane e perfoFFFlanee is required. *

• performance is fequirecf, the evaluation will detennine the ap opriate m ethod for performing the surveilla nc e. Examples of possible test method include, but are not limited to, visual inspection, air or smoke or equivalen t flow test, a draining and flushing the filled portions of the system inside cont a inment.

may require surveillance performanc e_ An evaluation, ba sed on the spec ific situation.