Event Notification Report for May 27, 2023
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
05/26/2023 - 05/27/2023
EVENT NUMBERS
56543
56543
Power Reactor
Event Number: 56543
Facility: Prairie Island
Region: 3 State: MN
Unit: [2] [] []
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: Chris Baartman
HQ OPS Officer: Donald Norwood
Region: 3 State: MN
Unit: [2] [] []
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: Chris Baartman
HQ OPS Officer: Donald Norwood
Notification Date: 05/27/2023
Notification Time: 20:28 [ET]
Event Date: 05/27/2023
Event Time: 18:34 [CDT]
Last Update Date: 05/28/2023
Notification Time: 20:28 [ET]
Event Date: 05/27/2023
Event Time: 18:34 [CDT]
Last Update Date: 05/28/2023
Emergency Class: Non Emergency
10 CFR Section:
50.72(a) (1) (i) - Emergency Declared 50.72(b)(2)(iv)(B) - RPS Actuation - Critical 50.72(b)(3)(iv)(A) - Valid Specif Sys Actuation
10 CFR Section:
50.72(a) (1) (i) - Emergency Declared 50.72(b)(2)(iv)(B) - RPS Actuation - Critical 50.72(b)(3)(iv)(A) - Valid Specif Sys Actuation
Person (Organization):
Benjamin, Jamie (R3DO)
Geissner, John (R3RA)
Veil, Andrea (DNRR)
Grant, Jeffery (IRMOC)
Gavrilas, Mirela (DNSIR)
Benjamin, Jamie (R3DO)
Geissner, John (R3RA)
Veil, Andrea (DNRR)
Grant, Jeffery (IRMOC)
Gavrilas, Mirela (DNSIR)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | A/R | Y | 100 | Power Operation | 0 | Hot Standby |
NOTIFICATION OF UNUSUAL EVENT DUE TO MULTIPLE FIRE ALARMS IN CONTAINMENT NOT VERIFIED WITHIN 15 MINUTES
The following information was provided by the licensee via email:
"Notification of Unusual Event, HU4.1 declared based on multiple fire alarms in the containment building not verified within 15 minutes.
"Turbine trip causing reactor trip due to fault on 2GT transformer.
"At 1845 CDT, verification of no fire in the containment building."
Notified DHS Senior Watch Officer, FEMA Operations Center, CISA Central watch officer, DOE Operations Center (email), HHS Operations Center (email), EPA Emergency Operations Center (email), USDA Operations Center (email), FDA EOC (email), FEMA NWC (email) and DHS Nuclear SSA (email), FEMA NRCC (email) and CWMD watch desk (email).
* * * UPDATE AT 0148 EDT ON 5/28/23 FROM CHRIS BAARTMAN TO BILL GOTT * * *
The following information was provided by the licensee via email:
"This update is being made to report the actuation of the auxiliary feedwater system following the reactor trip at 1819 CDT. This event is being reported as a specified system actuation in accordance with the reporting criteria of 10 CFR 50.72(b)(3)(iv)(A).
"This update is also being made for the termination of the notification of unusual event at 2304 CDT on 5/27/2023. The basis for the termination was that there was no indication of a fire.
"Upon lockout of 2GT transformer, main to reserve power transfer did not occur on 3 of 4 non-safeguards buses. Subsequently, operator action successfully restored power to all non-safeguards buses at 1925 CDT.
"There was no impact to the health and safety of the public or plant personnel.
"The NRC resident inspector has been notified of the update."
Notified R3DO (Benjam¡n), NRR EO (Walker), IRMOC (Grant), DHS Senior Watch Officer, FEMA Operations Center, CISA Central watch officer, DOE Operations Center (email), HHS Operations Center (email), EPA Emergency Operations Center (email), USDA Operations Center (email), FDA EOC (email), FEMA NWC (email) and DHS Nuclear SSA (email), FEMA NRCC (email) and CWMD watch desk (email).
The following information was provided by the licensee via email:
"Notification of Unusual Event, HU4.1 declared based on multiple fire alarms in the containment building not verified within 15 minutes.
"Turbine trip causing reactor trip due to fault on 2GT transformer.
"At 1845 CDT, verification of no fire in the containment building."
Notified DHS Senior Watch Officer, FEMA Operations Center, CISA Central watch officer, DOE Operations Center (email), HHS Operations Center (email), EPA Emergency Operations Center (email), USDA Operations Center (email), FDA EOC (email), FEMA NWC (email) and DHS Nuclear SSA (email), FEMA NRCC (email) and CWMD watch desk (email).
* * * UPDATE AT 0148 EDT ON 5/28/23 FROM CHRIS BAARTMAN TO BILL GOTT * * *
The following information was provided by the licensee via email:
"This update is being made to report the actuation of the auxiliary feedwater system following the reactor trip at 1819 CDT. This event is being reported as a specified system actuation in accordance with the reporting criteria of 10 CFR 50.72(b)(3)(iv)(A).
"This update is also being made for the termination of the notification of unusual event at 2304 CDT on 5/27/2023. The basis for the termination was that there was no indication of a fire.
"Upon lockout of 2GT transformer, main to reserve power transfer did not occur on 3 of 4 non-safeguards buses. Subsequently, operator action successfully restored power to all non-safeguards buses at 1925 CDT.
"There was no impact to the health and safety of the public or plant personnel.
"The NRC resident inspector has been notified of the update."
Notified R3DO (Benjam¡n), NRR EO (Walker), IRMOC (Grant), DHS Senior Watch Officer, FEMA Operations Center, CISA Central watch officer, DOE Operations Center (email), HHS Operations Center (email), EPA Emergency Operations Center (email), USDA Operations Center (email), FDA EOC (email), FEMA NWC (email) and DHS Nuclear SSA (email), FEMA NRCC (email) and CWMD watch desk (email).