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Event Notification Report for January 27, 2025

U.S. Nuclear Regulatory Commission
Operations Center

EVENT REPORTS FOR
01/24/2025 - 01/27/2025

EVENT NUMBERS
57506 57514 57515
Power Reactor
Event Number: 57506
Facility: Brunswick
Region: 2     State: NC
Unit: [1] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: Quintin Holley
HQ OPS Officer: Josue Ramirez
Notification Date: 01/23/2025
Notification Time: 10:00 [ET]
Event Date: 12/05/2024
Event Time: 17:05 [EST]
Last Update Date: 01/23/2025
Emergency Class: Non Emergency
10 CFR Section:
50.73(a)(1) - Invalid Specif System Actuation
Person (Organization):
Suggs, LaDonna (R2DO)
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
2 N Y 100 Power Operation 95 Power Operation
Event Text
60-DAY NOTIFICATION OF INVALID ACTUATION OF EMERGENCY DIESEL GENERATOR

The following information was provided by the licensee via phone and email:

"This 60-day optional telephone notification is being made in lieu of a licensee event report submittal as allowed by 10 CFR 50.73(a)(1). This notification is made pursuant to the reporting requirements specified in 10 CFR 50.73(a)(2)(iv)(A) for an invalid actuation of one of the systems listed in 10 CFR 50.73(a)(2)(iv)(B).
"At approximately 1705 EST on December 5, 2024, an invalid actuation of emergency diesel generator (EDG) '2' occurred. It was determined that the run timing relay failed causing energization of the starting air solenoid valves ultimately resulting in EDG '2' spuriously starting and running with no demand and no auto-start signals.
"The actuation was not initiated in response to actual plant conditions, it was not an intentional manual initiation, and there were no parameters satisfying the requirements for initiation of the system. Therefore, this event has been determined to be an invalid actuation.
"During this event, the actuation of EDG '2' was complete. Initiation of attendant instrumentation/controls and supporting auxiliary equipment was as expected for the actuation being outside normal EDG start logic. Emergency bus 'E2' remained energized from offsite power and EDG '2' did not tie to bus 'E2'.
"This event did not result in any adverse impact to the health and safety of the public."

The NRC Resident Inspector has been notified.


Power Reactor
Event Number: 57514
Facility: River Bend
Region: 4     State: LA
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: Terry Blanchard
HQ OPS Officer: Josue Ramirez
Notification Date: 01/25/2025
Notification Time: 20:05 [ET]
Event Date: 01/25/2025
Event Time: 17:07 [CST]
Last Update Date: 01/25/2025
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(2)(xi) - Offsite Notification
Person (Organization):
Deese, Rick (R4DO)
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
OFFSITE NOTIFICATION DUE TO WASTE WATER DISCHARGE

The following information was provided by the licensee via phone and email:

"On January 25, 2025, at 1707 CST, River Bend Station performed a notification to the Louisiana Department of Environmental Quality per the Louisiana Pollutant Discharge Elimination System (LPDES) permit (LA0042731) due to a wastewater leak. The wastewater leak originated at a sewage lift pump station and resulted in an unauthorized discharge. This notification is being made as a four-hour, non-emergency report for notification to other government agency in accordance with 10 CFR 50.72(b)(2)(xi). There was no impact to the health and safety of the public or plant personnel.

"The NRC Resident Inspector has been notified."

The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:

The wastewater leak has been stopped.


Power Reactor
Event Number: 57515
Facility: Quad Cities
Region: 3     State: IL
Unit: [1] [2] []
RX Type: [1] GE-3,[2] GE-3
NRC Notified By: Christopher Thompson
HQ OPS Officer: Josue Ramirez
Notification Date: 01/26/2025
Notification Time: 20:35 [ET]
Event Date: 01/26/2025
Event Time: 14:50 [CST]
Last Update Date: 01/26/2025
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
Person (Organization):
Betancourt-Roldan, Diana (R3DO)
Power Reactor Unit Info
Unit SCRAM Code RX Crit Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 90 Power Operation 90 Power Operation
2 N Y 100 Power Operation 100 Power Operation
Event Text
CONTROL ROOM EMERGENCY VENTILATION AIR CONDITIONING SYSTEM INOPERABLE

The following information was provided by the licensee via phone and email:

"On January 26, 2025, at 1450 CST, it was discovered that the Control Room Emergency Ventilation Air Conditioning (CREVAC) system was inoperable. Due to this inoperability, the system was in a condition that could have prevented the fulfillment of a safety function, and therefore, this condition is being reported as an eight-hour non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). The CREVAC system is a single train system.

"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."