ENS 54923
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ENS Event | ||
|---|---|---|
15:30 Jul 22, 2020 | ||
| Title | Oprm Count Setpoint Discrepancy | |
| Event Description | 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. | |
| Where | |
|---|---|
Quad Cities  Illinois (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
| Time - Person (Reporting Time:+1661.82 h69.243 days <br />9.892 weeks <br />2.276 months <br />) | |
| Opened: | Daniel Moeller 21:19 Sep 29, 2020 |
| NRC Officer: | Brian P. Smith |
| Last Updated: | Sep 29, 2020 |
| 54923 - NRC Website
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