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Event Notification Report for July 18, 2023

U.S. Nuclear Regulatory Commission
Operations Center

EVENT REPORTS FOR
07/17/2023 - 07/18/2023

EVENT NUMBERS
56641

Power Reactor
Event Number: 56641
Facility: River Bend
Region: 4     State: LA
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: Adam Willson
HQ OPS Officer: Brian P. Smith
Notification Date: 07/26/2023
Notification Time: 09:10 [ET]
Event Date: 07/18/2023
Event Time: 15:14 [CDT]
Last Update Date: 07/26/2023
Emergency Class: Non Emergency
10 CFR Section:
21.21(d)(3)(i) - Defects And Noncompliance
Person (Organization):
Young, Cale (R4DO)
Part 21/50.55 Reactors, - (EMAIL)
Power Reactor Unit Info
Unit SCRAM Code RX Crit Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 100 Power Operation
Event Text
PART 21 REPORT - MOTOR DRIVEN RELAY FAILED TESTING

The following information is a synopsis provided by the licensee via email:

River Bend Station completed an internal Part 21 evaluation concerning a motor driven relay that failed pre-installation testing due to a buildup of corrosion between the rotor and relay core. The relay was planned for use in the Remote Shutdown System. The NRC Resident has been notified. A written notification will be provided within 30 days.

Affected known plants include only River Bend at the time of the notification.