ENS Event | |
|---|---|
13:24 Apr 1, 2026 | |
| Title | |
| Event Description | The following information was provided by the licensee via phone and email:
At 0924 EDT on April 1, 2026, it was determined that Unit 3 was in an unanalyzed condition because two emergency diesel generators (EDGs) were inoperable. One EDG was inoperable due to scheduled maintenance, and the second EDG was inoperable due to blocking for an emergent plant issue. This condition is not bounded by existing design and licensing documents; however, it poses no impact to the health and safety of the public or plant personnel. The second EDG was returned to service, and the condition was exited. This event is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(ii)(B) and 10 CFR 50.72(b)(3)(v)(D). The NRC Resident Inspector has been notified. The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance: Unit 2 was unaffected by this condition. No other limiting conditions exist. The second EDG was blocked due to a failed transformer, but the transformer has been repaired. |
| Where | |
|---|---|
Peach Bottom  Pennsylvania (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition | |
| Time - Person (Reporting Time:+3.53 h0.147 days <br />0.021 weeks <br />0.00484 months <br />) | |
| Opened: | Dave Sears 16:56 Apr 1, 2026 |
| NRC Officer: | Ian Howard |
| Last Updated: | Apr 1, 2026 |
| 58228 - NRC Website
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Unit 3 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 582282026-04-01T13:24:0001 April 2026 13:24:00
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