Event Notification Report for January 16, 2025
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
01/15/2025 - 01/16/2025
Power Reactor
Event Number: 57495
Facility: Sequoyah
Region: 2 State: TN
Unit: [2] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: John Ralson
HQ OPS Officer: Robert A. Thompson
Region: 2 State: TN
Unit: [2] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: John Ralson
HQ OPS Officer: Robert A. Thompson
Notification Date: 01/16/2025
Notification Time: 13:39 [ET]
Event Date: 01/16/2025
Event Time: 09:50 [EST]
Last Update Date: 01/16/2025
Notification Time: 13:39 [ET]
Event Date: 01/16/2025
Event Time: 09:50 [EST]
Last Update Date: 01/16/2025
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(iv)(A) - Valid Specif Sys Actuation
10 CFR Section:
50.72(b)(3)(iv)(A) - Valid Specif Sys Actuation
Person (Organization):
Suggs, LaDonna (R2DO)
Suggs, LaDonna (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | M/R | N | 0 | Hot Standby | 0 | Hot Standby |
MANUAL TRIP WHILE SHUTDOWN
The following information was provided by the licensee via phone and email:
"At 0950 EST, with Unit 2 in mode 3 at 0 percent power, the reactor was manually tripped due to group 2 of control rod bank D failing to withdraw during rod drop testing. The trip was not complex, with all systems responding normally post-trip.
"Operations responded and stabilized the plant. Decay heat is being removed by the auxiliary feedwater and steam dump systems. Unit 1 is not affected.
"At the time of the event, Unit 2 was not critical. Therefore, this event is being reported as an eight-hour, non-emergency notification in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the reactor protection system.
"There was no impact on 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:
Four controls rods failed to move on demand. All control rods inserted on the trip.
The following information was provided by the licensee via phone and email:
"At 0950 EST, with Unit 2 in mode 3 at 0 percent power, the reactor was manually tripped due to group 2 of control rod bank D failing to withdraw during rod drop testing. The trip was not complex, with all systems responding normally post-trip.
"Operations responded and stabilized the plant. Decay heat is being removed by the auxiliary feedwater and steam dump systems. Unit 1 is not affected.
"At the time of the event, Unit 2 was not critical. Therefore, this event is being reported as an eight-hour, non-emergency notification in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the reactor protection system.
"There was no impact on 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:
Four controls rods failed to move on demand. All control rods inserted on the trip.
Power Reactor
Event Number: 57498
Facility: Monticello
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: Brenden Eagle
HQ OPS Officer: Karen Cotton-Gross
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: Brenden Eagle
HQ OPS Officer: Karen Cotton-Gross
Notification Date: 01/16/2025
Notification Time: 16:16 [ET]
Event Date: 01/16/2025
Event Time: 11:50 [CST]
Last Update Date: 01/16/2025
Notification Time: 16:16 [ET]
Event Date: 01/16/2025
Event Time: 11:50 [CST]
Last Update Date: 01/16/2025
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(2)(xi) - Offsite Notification
10 CFR Section:
50.72(b)(2)(xi) - Offsite Notification
Person (Organization):
Betancourt-Roldan, Diana (R3DO)
Betancourt-Roldan, Diana (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
OFFSITE NOTIFICATION
The following information was provided by the licensee via phone and email:
"On January 16, 2025, at 1150 CST, Xcel Energy performed a notification to the State of Minnesota Duty Officer per the National Pollutant Discharge Elimination System (NPDES) Permit (# MN0000868). This notification is being made solely 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 offsite notification is a requirement per the NPDES permit to report any instance of waste water release to the state. There was a release of waste water from a pumping house which was subsequently cleaned up by site personnel.
The following information was provided by the licensee via phone and email:
"On January 16, 2025, at 1150 CST, Xcel Energy performed a notification to the State of Minnesota Duty Officer per the National Pollutant Discharge Elimination System (NPDES) Permit (# MN0000868). This notification is being made solely 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 offsite notification is a requirement per the NPDES permit to report any instance of waste water release to the state. There was a release of waste water from a pumping house which was subsequently cleaned up by site personnel.