ENS Event | |
|---|---|
13:15 Mar 29, 2025 | |
| Title | Automatic Actuation of Division 3 Diesel Generator |
| Event Description | The following information was provided by the licensee via phone and email:
At 0915 EDT, on March 29, 2025, with Unit 1 in mode 5 at zero percent power, an actuation of the emergency diesel generator system occurred during Unit 2 startup transformer testing. The reason for the auto-start was the loss of an electrical bus during testing. The division 3 diesel generator automatically started as designed on low safety bus voltage. This event is being reported in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the emergency diesel generator system. There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. |
| Where | |
|---|---|
Perry  Ohio (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |
| LER: | 05000440/LER-2025-001 Automatic Actuation of Division 3 Diesel Generator Resulting from Startup Transformer Testing |
| Time - Person (Reporting Time:+3.02 h0.126 days <br />0.018 weeks <br />0.00414 months <br />) | |
| Opened: | Robert Mcclary 16:16 Mar 29, 2025 |
| NRC Officer: | Kerby Scales |
| Last Updated: | Mar 29, 2025 |
| 57638 - NRC Website
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