Event Notification Report for January 09, 2020
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
01/08/2020 - 01/09/2020
EVENT NUMBERS
54470
Power Reactor
Event Number: 54470
Facility: RIVER BEND
Region: 4 State: LA
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: JASON ARNS
HQ OPS Officer: KARL DIEDERICH
Region: 4 State: LA
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: JASON ARNS
HQ OPS Officer: KARL DIEDERICH
Notification Date: 01/09/2020
Notification Time: 19:25 [ET]
Event Date: 01/09/2020
Event Time: 11:32 [CST]
Last Update Date: 01/09/2020
Notification Time: 19:25 [ET]
Event Date: 01/09/2020
Event Time: 11:32 [CST]
Last Update Date: 01/09/2020
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(A) - POT UNABLE TO SAFE SD 50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
10 CFR Section:
50.72(b)(3)(v)(A) - POT UNABLE TO SAFE SD 50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
HEATHER GEPFORD (R4DO)
HEATHER GEPFORD (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
LOSS OF CHILLERS
"The Division I Control Building Chiller 'A' failed to start during post maintenance testing. By design, the Division II Control Building Chiller 'B' should have started automatically but did not. Operators then manually placed the Division I Control Building Chiller 'C' in service.
"This condition rendered both Divisions of the Control Building Air Conditioning System Inoperable. The applicable LCO was entered and exited 10 minutes later with all required actions and completion times met. The cause of the failure is not known at this time. The plant was at 100% power at the time of the event and is currently stable at 100% power."
The NRC Resident Inspector has been notified.
"The Division I Control Building Chiller 'A' failed to start during post maintenance testing. By design, the Division II Control Building Chiller 'B' should have started automatically but did not. Operators then manually placed the Division I Control Building Chiller 'C' in service.
"This condition rendered both Divisions of the Control Building Air Conditioning System Inoperable. The applicable LCO was entered and exited 10 minutes later with all required actions and completion times met. The cause of the failure is not known at this time. The plant was at 100% power at the time of the event and is currently stable at 100% power."
The NRC Resident Inspector has been notified.