ENS Event | |
|---|---|
13:09 Sep 5, 2025 | |
| Title | Degraded Condition |
| Event Description | The following information was provided by the licensee via phone and email:
At 0909 EDT on September 5, 2025, with the unit shut down for a scheduled refueling outage it was determined the reactor coolant system barrier had a through wall flaw with leakage. The leakage is minor in nature and unquantifiable. The leakage is coming from a welded connection upstream of a 1-inch vent valve on the chemical and volume control system letdown line. The leak was isolated in accordance with plant technical specifications. This event is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(ii)(A). There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. |
| Where | |
|---|---|
Catawba  South Carolina (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded | |
| LER: | 05000414/LER-2025-004 Through Wall Leak in Letdown Piping |
| Time - Person (Reporting Time:+3.7 h0.154 days <br />0.022 weeks <br />0.00507 months <br />) | |
| Opened: | Aaron Michalski 16:51 Sep 5, 2025 |
| NRC Officer: | Kerby Scales |
| Last Updated: | Sep 5, 2025 |
| 57906 - NRC Website
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WEEKMONTHYEARENS 579062025-09-05T13:09:0005 September 2025 13:09:00
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