05000395/LER-2024-001, (Vcsns), Unit 1, Automatic Actuation of B Emergency Diesel Generator

(Vcsns), Unit 1, Automatic Actuation of B Emergency Diesel Generator

ML24108A143
Person / Time
Site:	Summer
Issue date:	04/17/2024
From:	Ryan Justice Dominion Energy South Carolina
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
24-167 LER 2024-001-00
Download: ML24108A143 (1)

LER-2024-001, (Vcsns), Unit 1, Automatic Actuation of B Emergency Diesel Generator

Event date:
Report date:
3952024001R00 - NRC Website

Abstract

On February 19, 2024, at approximately 0236 EDT, V.C. Summer Nuclear Station (VCSNS) experienced an automatic actuation of the 'B' Emergency Diesel Generator (EDG). The actuation was caused by the 1 DB Normal incoming breaker opening due to an intermittent undervoltage control circuit connection on the associated fuse holder. All plant equipment and systems responded as expected. 'B' Train electrical loads were transferred back to the 1DB Normal power supply at 1700 EDT that same day, following the repair of the fuse holder connection. Reactor power remained at 100% throughout the event.

This event is being reported in accordance with 10 CFR 50. 73(a)(2)(iv)(A).