ENS 54978

v t e ENS Event
10:19 Nov 2, 2020
Title	Automatic Reactor Trip Due to Control Element Drive Mechanism Control System Timer Failure
Event Description	On November 2, 2020, at 0419 CST, Waterford 3 experienced an automatic reactor trip due to a Control Element Drive Mechanism Control System timer failure while attempting to synchronize a second motor generator set. All control rods fully inserted. The plant is currently in Mode 3 and stable with normal feedwater feeding and maintaining both Steam Generators. The NRC Senior Resident Inspector has been notified. The cause of the failure is still under investigation.

ENS 54978 +/-
Where
Waterford Louisiana (NRC Region 4)
Reporting

10 CFR 50.72(b)(2)(iv)(B), RPS Actuation
Time - Person (Reporting Time:+-2.15 h-0.0896 days <br />-0.0128 weeks <br />-0.00295 months <br />)
Opened:	Kevin Hale 08:10 Nov 2, 2020
NRC Officer:	Jeffrey Whited
Last Updated:	Nov 2, 2020
54978 - NRC Website
v • d • e

v t e Emergency Notification System
Waterford with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation
WEEKMONTHYEAR2020-11-02T10:19:00 [Table view]
[ENS list for Waterford]

Navigation menu