ENS 50381
ENS Event | |
|---|---|
23:25 Aug 18, 2014 | |
| Title | Shield Building Boundary Door Failed to Latch |
| Event Description | At 1925 EDT on 08/18/2014 an equipment failure prevented a boundary door to the Shield Building Negative Pressure Area to latch closed upon egress, thereby preventing fulfillment of the Station Emergency Ventilation System safety function. Necessary door repairs per normal station practices were completed at 1935 EDT to establish full safety system function.
This event was previously considered not reportable. Subsequent review determined the event reportable. The NRC Resident has been notified of the event. The failure to meet the 8-hour reporting requirement has been entered into the Corrective Action Program. The licensee will notify the State, Ottawa, and Lucas counties
At approximately 0413 [EDT] on 8/20/14, the boundary door to the Shield Building Negative Pressure Area again failed to latch closed upon egress. The door was able to be closed and latched at 0419, restoring the Station Emergency Ventilation System safety function. Door use will be limited to essential activities until final repairs to the door closure and latching mechanism are complete. The NRC Resident has been notified of the event. The licensee will notify the State of Ohio and local authorities. Notified R3DO (Passehl). |
| Where | |
|---|---|
Davis Besse  Ohio (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
| LER: | 05000346/LER-2014-003 |
| Time - Person (Reporting Time:+15.07 h0.628 days <br />0.0897 weeks <br />0.0206 months <br />) | |
| Opened: | Thomas Cobbledick 14:29 Aug 19, 2014 |
| NRC Officer: | Charles Teal |
| Last Updated: | Aug 20, 2014 |
| 50381 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |