ML25030A188
| ML25030A188 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 01/30/2025 |
| From: | Denise Edwards Dominion Energy South Carolina |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| 24-340A, LER 2024-003-00 | |
| Download: ML25030A188 (1) | |
Text
Dominion Energy South Carolina, Inc Virgil C. Summer Nuclear Station Bradham Boulevard & Highway 215, Jenkinsville, SC 29065 Mailing Address:
P.O. Box 88, Jenkinsville, SC 29065 DominionEnergy.com January 30, 2025 In accordance with NUREG-1022, Revision 3, Section 5.1.2, Dominion Energy South Carolina, Inc. (DESC) is submitting this letter to formally withdraw its Licensee Event Report (LER) 2024-003-00, for Virgil C. Summer Nuclear Station (VCSNS). This LER reported a condition where both trains of Engineered Safety Features (ESF) located in the Control Building were potentially inoperable.
On September 17, 2024, ESF in the Control Building were conservatively declared inoperable upon discovery of degraded steam propagation barrier door latch. The degraded door latch was repaired following discovery. The event was initially reported under 10 CFR 50.73(a)(2)(vii) as a Common Cause Inoperability of Engineered Safety Features, while evaluation of the condition was performed to understand if the ESF were in fact compromised by the discovered condition.
The engineering evaluation of the condition is complete and determined that the Steam Propagation Barrier Door (DRCB/501) would have performed its safety-related function. As a result, the ESF located in the Control Building were operable, as the support function of DRCB/501 would have been performed had a postulated high-energy line break occurred in the Turbine Building.
There were no consequences to the health and safety of the public as a result of the degraded door latch. Should you have any questions, please call Mr. Justin Bouknight at (803) 941-9828.
Sincerely, Doug Edwards Director, Nuclear Station Safety & Licensing V.C. Summer Nuclear Station Commitments contained in this letter: None cc:
G. J. Lindamood - Santee Cooper L. Dudes - NRC Region II G. Miller - NRC Project Mgr.
NRC Resident Inspector Marsh USA, Inc.
Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555 Serial No.: 24-340A VCS-LIC/JB R0 Docket No. 50-395 License No. NPF-12 DOMINION ENERGY SOUTH CAROLINA, INC.
VIRGIL C. SUMMER NUCLEAR STATION UNIT 1 WITHDRAWAL OF LICENSEE EVENT REPORT 2024-003-00