Event Notification Report for December 19, 2022
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/18/2022 - 12/19/2022
Power Reactor
Event Number: 56281
Facility: Brunswick
Region: 2 State: NC
Unit: [1] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: Joseph Strnad
HQ OPS Officer: Brian Lin
Region: 2 State: NC
Unit: [1] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: Joseph Strnad
HQ OPS Officer: Brian Lin
Notification Date: 12/19/2022
Notification Time: 13:12 [ET]
Event Date: 12/19/2022
Event Time: 07:35 [EST]
Last Update Date: 12/19/2022
Notification Time: 13:12 [ET]
Event Date: 12/19/2022
Event Time: 07:35 [EST]
Last Update Date: 12/19/2022
Emergency Class: Non Emergency
10 CFR Section:
26.719 - Fitness For Duty
10 CFR Section:
26.719 - Fitness For Duty
Person (Organization):
Miller, Mark (R2DO)
FFD Group, (EMAIL)
Miller, Mark (R2DO)
FFD Group, (EMAIL)
| 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 | 98 | Power Operation | 95 | Power Operation |
FAILED FITNESS FOR DUTY TEST
The following information was provided by the licensee via email:
"At 0735 EST on December 19, 2022, it was determined that a non-licensed employee supervisor failed a test specified by the Fitness-for-Duty (FFD) testing program. The individual's authorization for site access has been terminated.
"The NRC Resident Inspector has been notified."
The following information was provided by the licensee via email:
"At 0735 EST on December 19, 2022, it was determined that a non-licensed employee supervisor failed a test specified by the Fitness-for-Duty (FFD) testing program. The individual's authorization for site access has been terminated.
"The NRC Resident Inspector has been notified."
Power Reactor
Event Number: 56282
Facility: Grand Gulf
Region: 4 State: MS
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: Jason Overcash
HQ OPS Officer: Lloyd Desotell
Region: 4 State: MS
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: Jason Overcash
HQ OPS Officer: Lloyd Desotell
Notification Date: 12/20/2022
Notification Time: 00:24 [ET]
Event Date: 12/19/2022
Event Time: 21:01 [CST]
Last Update Date: 12/20/2022
Notification Time: 00:24 [ET]
Event Date: 12/19/2022
Event Time: 21:01 [CST]
Last Update Date: 12/20/2022
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):
Warnick, Greg (R4DO)
Warnick, Greg (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | M/R | Y | 78 | Power Operation | 0 | Hot Standby |
MANUAL SCRAM DUE TO LOSS OF FEEDWATER PUMP
The following information was provided by the licensee via email:
"At 2101 [CST] on December 19, 2022, a manual reactor scram was initiated at Grand Gulf Nuclear Station (GGNS). Following the reactor scram, the high pressure core spray (HPCS) system was used to maintain reactor water level. The manual [reactor protection system] RPS actuation is being reported in accordance with 10 CFR 50.72(b)(2) and the HPCS actuation is being reported in accordance with 10 CFR 50.72(b)(3).
"At 2058, GGNS experienced a loss of a condensate booster pump. At 2101, the `A' reactor feedwater pump tripped and the reactor was manually scrammed. All control rods were fully inserted into the core.
"At 2104, the `B' reactor feedwater pump tripped and HPCS was manually started. HPCS was manually injected to maintain reactor water level at 2121. The `A' reactor feedwater pump was successfully restarted at 2126.
"GGNS is currently in Mode 3. Reactor level is being maintained with the `A' reactor feedwater pump and pressure is being maintained with the turbine bypass valves.
"The NRC Resident Inspector was notified."
The following information was provided by the licensee via email:
"At 2101 [CST] on December 19, 2022, a manual reactor scram was initiated at Grand Gulf Nuclear Station (GGNS). Following the reactor scram, the high pressure core spray (HPCS) system was used to maintain reactor water level. The manual [reactor protection system] RPS actuation is being reported in accordance with 10 CFR 50.72(b)(2) and the HPCS actuation is being reported in accordance with 10 CFR 50.72(b)(3).
"At 2058, GGNS experienced a loss of a condensate booster pump. At 2101, the `A' reactor feedwater pump tripped and the reactor was manually scrammed. All control rods were fully inserted into the core.
"At 2104, the `B' reactor feedwater pump tripped and HPCS was manually started. HPCS was manually injected to maintain reactor water level at 2121. The `A' reactor feedwater pump was successfully restarted at 2126.
"GGNS is currently in Mode 3. Reactor level is being maintained with the `A' reactor feedwater pump and pressure is being maintained with the turbine bypass valves.
"The NRC Resident Inspector was notified."