Event Notification Report for July 22, 2020
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
07/21/2020 - 07/22/2020
EVENT NUMBERS
54923
Power Reactor
Event Number: 54923
Facility: Quad Cities
Region: 3 State: IL
Unit: [] [2] []
RX Type: [1] GE-3,[2] GE-3
NRC Notified By: Daniel Moeller
HQ OPS Officer: Brian P. Smith
Region: 3 State: IL
Unit: [] [2] []
RX Type: [1] GE-3,[2] GE-3
NRC Notified By: Daniel Moeller
HQ OPS Officer: Brian P. Smith
Notification Date: 09/29/2020
Notification Time: 21:19 [ET]
Event Date: 07/22/2020
Event Time: 10:30 [CDT]
Last Update Date: 09/29/2020
Notification Time: 21:19 [ET]
Event Date: 07/22/2020
Event Time: 10:30 [CDT]
Last Update Date: 09/29/2020
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):
AARON McCRAW (R3DO)
AARON McCRAW (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
OPRM COUNT SETPOINT DISCREPANCY
"On July 22, 2020, at 1030 CDT, it was discovered that the as-found Unit 2 Oscillation Power Range Monitor (OPRM) Maximum Confirmation Count Setpoint did not match the values in the Quad Cities Unit 2 [Core Operating Limits Report] (COLR) per TS SR 3.3.1.3.3. All Unit 2 OPRMs were declared inoperable. Due to this inoperability, the OPRM system was in a condition that could have prevented the fulfillment of a safety function; therefore, this condition is being reported per 10 CFR 50.72(b)(3)(v)(D). There were no other Technical Specification or safety systems inoperable at the time of this event. There was no impact on the health and safety of the public or plant personnel.
"The NRC Resident Inspector has been notified."
Quad Cities Unit 2 returned their OPRMs to operable on July 23, 2020, at 1210 CDT, following a setpoint adjustment. In addition, during a more recent meeting between station personnel and the NRC resident inspectors, feedback was provided that brought to the station management's attention that they needed to make the required 50.72 notification as a result to this past inoperability.
"On July 22, 2020, at 1030 CDT, it was discovered that the as-found Unit 2 Oscillation Power Range Monitor (OPRM) Maximum Confirmation Count Setpoint did not match the values in the Quad Cities Unit 2 [Core Operating Limits Report] (COLR) per TS SR 3.3.1.3.3. All Unit 2 OPRMs were declared inoperable. Due to this inoperability, the OPRM system was in a condition that could have prevented the fulfillment of a safety function; therefore, this condition is being reported per 10 CFR 50.72(b)(3)(v)(D). There were no other Technical Specification or safety systems inoperable at the time of this event. There was no impact on the health and safety of the public or plant personnel.
"The NRC Resident Inspector has been notified."
Quad Cities Unit 2 returned their OPRMs to operable on July 23, 2020, at 1210 CDT, following a setpoint adjustment. In addition, during a more recent meeting between station personnel and the NRC resident inspectors, feedback was provided that brought to the station management's attention that they needed to make the required 50.72 notification as a result to this past inoperability.