ML20342A182

NRR E-mail Capture - Final RAI for Summer LAR - TS 3.6.4

ML20342A182
Person / Time
Site:	Summer
Issue date:	12/07/2020
From:	Vaughn Thomas NRC/NRR/DORL/LPL2-1
To:	Gao Y South Carolina Electric & Gas Co
References
Download: ML20342A182 (5)

Text

From: Thomas, Vaughn Sent: Monday, December 7, 2020 10:00 AM To: Yan.Gao@dominionenergy.com Cc: Croon, Gregory

Subject:

Final RAI for Summer LAR - TS 3.6.4 Attachments: ML20259A347 (2).pdf

Yan, By letter dated April 30, 2020 (Agencywide Documents Access and Management System Accession No. ML20121A185), Dominion Energy South Carolina, Inc., (Dominion) submitted a license amendment request to modify Technical Specifications related to the containment isolation valves for Virgil C. Summer Nuclear Station (VCSNS), Unit No. 1. Specifically, the licensee proposed to revise the action statements associated with Technical Specification (TS)

Limiting Condition for Operation (LCO) 3.6.4, "Containment Isolation Valves," to replace the term valve with the term barrier to encompass all components providing the containment isolation function and specify that actions to address an inoperable containment isolation valve apply to the affected penetration flow path only rather than all flow paths associated with the penetration.

The NRC staff has reviewed the application and, based upon this review, determined that additional information is needed to complete our review. Please provide a response on the docket within 30 days of this correspondence.

Request for Additional Information (RAI-01)

Should TS 3.6.4 action statement ensure at least one OPERABLE isolation barrier would be present in each penetration flow path affected by an inoperable CIV.

Thanks Vaughn Thomas, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Vaughn.Thomas@nrc.gov 301-415-5897

Hearing Identifier: NRR_DRMA Email Number: 918 Mail Envelope Properties (BLAPR09MB69001AD9CAB8B4CBD07FB47EF4CE0)

Subject:

Final RAI for Summer LAR - TS 3.6.4 Sent Date: 12/7/2020 9:59:35 AM Received Date: 12/7/2020 9:59:35 AM From: Thomas, Vaughn Created By: Vaughn.Thomas@nrc.gov Recipients:

"Croon, Gregory" <Gregory.Croon@nrc.gov>

Tracking Status: None "Yan.Gao@dominionenergy.com" <Yan.Gao@dominionenergy.com>

Tracking Status: None Post Office: BLAPR09MB6900.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 1490 12/7/2020 9:59:35 AM ML20259A347 (2).pdf 91708 Options Priority: Normal Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:



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