ENS 54465
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ENS Event | |
|---|---|
18:41 Jan 7, 2020 | |
| Title | Chill Water System Inoperable |
| Event Description | At 1341[EST], on 01/07/20, it was discovered all trains of the Chilled Water System were simultaneously Inoperable; therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). During this event, the Bravo train chiller was operating in a maintenance run and the temporary chiller was available and placed in service promptly to restore the safety function.
The control room area cooling safety function was restored at time 1435 [EST] when one required train was declared Operable. There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified.
The purpose of this notification is to retract a previous report made on January 7, 2020, at 1909 EST (EN#54465). A subsequent evaluation determined that the Bravo train chiller, which was running at the time of the event, would be able to perform its safety function and was operable at the time of the event. Therefore, there was no loss of safety function. The NRC Senior Resident Inspector has been notified. Notified R2DO (Coovert). |
| Where | |
|---|---|
Oconee  South Carolina (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
| Time - Person (Reporting Time:+0.47 h0.0196 days <br />0.0028 weeks <br />6.43806e-4 months <br />) | |
| Opened: | Chris Judd 19:09 Jan 7, 2020 |
| NRC Officer: | Brian Lin |
| Last Updated: | Jan 23, 2020 |
| 54465 - NRC Website | |
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