Event Notification Report for January 24, 2023
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
01/23/2023 - 01/24/2023
EVENT NUMBERS
56321
56321
Power Reactor
Event Number: 56321
Facility: Browns Ferry
Region: 2 State: AL
Unit: [1] [] []
RX Type: [1] GE-4,[2] GE-4,[3] GE-4
NRC Notified By: Eric Steele
HQ OPS Officer: Adam Koziol
Region: 2 State: AL
Unit: [1] [] []
RX Type: [1] GE-4,[2] GE-4,[3] GE-4
NRC Notified By: Eric Steele
HQ OPS Officer: Adam Koziol
Notification Date: 01/24/2023
Notification Time: 08:43 [ET]
Event Date: 01/24/2023
Event Time: 01:21 [CST]
Last Update Date: 01/24/2023
Notification Time: 08:43 [ET]
Event Date: 01/24/2023
Event Time: 01:21 [CST]
Last Update Date: 01/24/2023
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
Person (Organization):
Miller, Mark (R2DO)
Miller, Mark (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
EN Revision Imported Date: 1/25/2023
EN Revision Text: HIGH PRESSURE COOLANT INJECTION INOPERABLE
The following information was provided by the licensee via email:
"At 0121 CST on 01/24/2023, it was discovered that the Unit 1 High Pressure Coolant Injection System (HPCI) was inoperable; therefore, the condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v), as an event or condition that at the time of discovery could have prevented the fulfillment of the safety function of structures or systems that are needed to mitigate the consequences of an accident.
"1-FCV-073-0006B, HPCI Steam Line Condensate Outboard Drain Valve, failed closed during normal plant configuration. This valve is normally open. The HPCI steam line is not being drained with the valve in the current position.
"The Unit 1 Nuclear Unit Senior Operator entered Unit 1 Technical Specifications LCO 3.5.1 Condition C with required actions C.1 to immediately verify by administrative means that the Reactor Core Isolation Cooling (RCIC) system is operable and C.2 to restore HPCI to operable status in 14 days. RCIC has been verified operable by administrative means.
"There was no impact to the safety of the public or plant personnel. The NRC Resident Inspector has been notified."
EN Revision Text: HIGH PRESSURE COOLANT INJECTION INOPERABLE
The following information was provided by the licensee via email:
"At 0121 CST on 01/24/2023, it was discovered that the Unit 1 High Pressure Coolant Injection System (HPCI) was inoperable; therefore, the condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v), as an event or condition that at the time of discovery could have prevented the fulfillment of the safety function of structures or systems that are needed to mitigate the consequences of an accident.
"1-FCV-073-0006B, HPCI Steam Line Condensate Outboard Drain Valve, failed closed during normal plant configuration. This valve is normally open. The HPCI steam line is not being drained with the valve in the current position.
"The Unit 1 Nuclear Unit Senior Operator entered Unit 1 Technical Specifications LCO 3.5.1 Condition C with required actions C.1 to immediately verify by administrative means that the Reactor Core Isolation Cooling (RCIC) system is operable and C.2 to restore HPCI to operable status in 14 days. RCIC has been verified operable by administrative means.
"There was no impact to the safety of the public or plant personnel. The NRC Resident Inspector has been notified."