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Event Notification Report for September 22, 2023
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
09/21/2023 - 09/22/2023
EVENT NUMBERS
56755
Power Reactor
Event Number: 56755
Facility: Turkey Point
Region: 2 State: FL
Unit: [3] [] []
RX Type: [3] W-3-LP,[4] W-3-LP
NRC Notified By: Ron Foster
HQ OPS Officer: Lawrence Criscione
Region: 2 State: FL
Unit: [3] [] []
RX Type: [3] W-3-LP,[4] W-3-LP
NRC Notified By: Ron Foster
HQ OPS Officer: Lawrence Criscione
Notification Date: 09/22/2023
Notification Time: 22:09 [ET]
Event Date: 09/22/2023
Event Time: 18:19 [EDT]
Last Update Date: 09/22/2023
Notification Time: 22:09 [ET]
Event Date: 09/22/2023
Event Time: 18:19 [EDT]
Last Update Date: 09/22/2023
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 (R2DO)
Miller, Mark (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 3 | A/R | Y | 100 | Power Operation | 0 | Hot Standby |
AUTOMATIC REACTOR TRIP
The following information was provided by the licensee via email:
"At 1819 EDT on 9/22/2023, with Unit 3 in Mode 1 at 100 percent power, the reactor automatically tripped due to a main generator lockout. The probable cause of the main generator lockout was from a lightning strike. The trip was uncomplicated with all systems responding normally post-trip. Operations stabilized the plant in Mode 3. Decay heat is being removed by the steam dump system. Unit 4 is not affected. Auxiliary feed water was actuated as expected as a result of the reactor trip.
"This event is being reported pursuant to 10 CFR 50.72(b)(2)(iv)(B) and 10 CFR 50.72(b)(3)(iv)(A). The NRC Resident Inspector has been notified."
The following information was provided by the licensee via email:
"At 1819 EDT on 9/22/2023, with Unit 3 in Mode 1 at 100 percent power, the reactor automatically tripped due to a main generator lockout. The probable cause of the main generator lockout was from a lightning strike. The trip was uncomplicated with all systems responding normally post-trip. Operations stabilized the plant in Mode 3. Decay heat is being removed by the steam dump system. Unit 4 is not affected. Auxiliary feed water was actuated as expected as a result of the reactor trip.
"This event is being reported pursuant to 10 CFR 50.72(b)(2)(iv)(B) and 10 CFR 50.72(b)(3)(iv)(A). The NRC Resident Inspector has been notified."