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Event Notification Report for March 19, 2021
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
03/18/2021 - 03/19/2021
EVENT NUMBERS
55146
Power Reactor
Event Number: 55146
Facility: Quad Cities
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-3,[2] GE-3
NRC Notified By: Mike MacLennon
HQ OPS Officer: Jeffrey Whited
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-3,[2] GE-3
NRC Notified By: Mike MacLennon
HQ OPS Officer: Jeffrey Whited
Notification Date: 03/20/2021
Notification Time: 04:55 [ET]
Event Date: 03/19/2021
Event Time: 20:30 [CDT]
Last Update Date: 03/20/2021
Notification Time: 04:55 [ET]
Event Date: 03/19/2021
Event Time: 20:30 [CDT]
Last Update Date: 03/20/2021
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):
HANNA, JOHN (R3)
HANNA, JOHN (R3)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Cold Shutdown | 0 | Cold Shutdown |
EN Revision Imported Date: 4/20/2021
EN Revision Text: AUTOMATIC ACTUATION OF UNIT 1 EMERGENCY DIESEL GENERATOR
"At 20:30 CDT on March 19, 2021, with the Unit 1 in Mode 5 at 0 percent power, an actuation of the Unit 1 Emergency Diesel Generator (EDG) occurred during outage activities on Transformer 12 (T-12) resulting in a trip. The cause of the Unit 1 EDG auto-start was bus undervoltage as a result of the T-12 trip. The Unit 1 EDG automatically started as designed when the Bus 14-1 undervoltage signal was received.
"This event is being reported in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the Unit 1 EDG.
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
EN Revision Text: AUTOMATIC ACTUATION OF UNIT 1 EMERGENCY DIESEL GENERATOR
"At 20:30 CDT on March 19, 2021, with the Unit 1 in Mode 5 at 0 percent power, an actuation of the Unit 1 Emergency Diesel Generator (EDG) occurred during outage activities on Transformer 12 (T-12) resulting in a trip. The cause of the Unit 1 EDG auto-start was bus undervoltage as a result of the T-12 trip. The Unit 1 EDG automatically started as designed when the Bus 14-1 undervoltage signal was received.
"This event is being reported in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the Unit 1 EDG.
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."