Event Notification Report for February 18, 2022
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
02/17/2022 - 02/18/2022
EVENT NUMBERS
55748
55748
Power Reactor
Event Number: 55748
Facility: McGuire
Region: 2 State: NC
Unit: [2] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Tiffney Louy
HQ OPS Officer: Thomas Kendzia
Region: 2 State: NC
Unit: [2] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Tiffney Louy
HQ OPS Officer: Thomas Kendzia
Notification Date: 02/18/2022
Notification Time: 08:35 [ET]
Event Date: 02/18/2022
Event Time: 04:59 [EST]
Last Update Date: 02/18/2022
Notification Time: 08:35 [ET]
Event Date: 02/18/2022
Event Time: 04:59 [EST]
Last Update Date: 02/18/2022
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS Actuation - Critical 50.72(b)(3)(iv)(A) - Valid Specif Sys Actuation
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS Actuation - Critical 50.72(b)(3)(iv)(A) - Valid Specif Sys Actuation
Person (Organization):
Miller, Mark (R2)
Miller, Mark (R2)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | M/R | Y | 55 | Power Operation | 0 | Hot Standby |
EN Revision Imported Date: 3/18/2022
EN Revision Text: MANUAL REACTOR TRIP AND SYSTEM ACTUATION
The following information was provided by the licensee via telephone and email:
"On 2/18/2022, McGuire Nuclear Station Unit 2 experienced a turbine runback to 55 percent power. Based on concerns with unit stability, the reactor was manually tripped at 0459 [EST]. All Auxiliary Feedwater pumps started on low steam generator level as required. The reactor trip was uncomplicated with all systems responding normally post trip. A feedwater isolation occurred as designed. Unit 1 was not affected.
"Due to the Reactor Protection System actuation while critical, actuation of the Turbine Driven Auxiliary Feedwater Pump and Motor Driven Auxiliary Feedwater pumps along with the Feedwater Isolation, this event is being reported as a four hour,
nonemergency notification per 10 CFR 50.72(b)(2)(iv)(B) and an 8 hour nonemergency notification per 10 CFR 50.72(b)(3)(iv)(A).
"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:
All control rods fully inserted. Decay heat is being removed via the condenser and normal feedwater. Unit 2 is in a normal shutdown electrical lineup.
EN Revision Text: MANUAL REACTOR TRIP AND SYSTEM ACTUATION
The following information was provided by the licensee via telephone and email:
"On 2/18/2022, McGuire Nuclear Station Unit 2 experienced a turbine runback to 55 percent power. Based on concerns with unit stability, the reactor was manually tripped at 0459 [EST]. All Auxiliary Feedwater pumps started on low steam generator level as required. The reactor trip was uncomplicated with all systems responding normally post trip. A feedwater isolation occurred as designed. Unit 1 was not affected.
"Due to the Reactor Protection System actuation while critical, actuation of the Turbine Driven Auxiliary Feedwater Pump and Motor Driven Auxiliary Feedwater pumps along with the Feedwater Isolation, this event is being reported as a four hour,
nonemergency notification per 10 CFR 50.72(b)(2)(iv)(B) and an 8 hour nonemergency notification per 10 CFR 50.72(b)(3)(iv)(A).
"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:
All control rods fully inserted. Decay heat is being removed via the condenser and normal feedwater. Unit 2 is in a normal shutdown electrical lineup.