ENS Event | |
|---|---|
15:09 Aug 2, 2012 | |
| Title | Discovery of After-The-Fact Emergency Condition (Unusual Event) |
| Event Description | This is a one-hour report for the discovery of a condition which met the Emergency Plan criteria for an emergency action level (EAL) declaration of an Unusual Event (UE). At 0320 hours0.0037 days <br />0.0889 hours <br />5.291005e-4 weeks <br />1.2176e-4 months <br /> on August 2, 2012, a flame was observed coming from a hydrogen vent pipe on the Turbine Building roof. At 0519 hours0.00601 days <br />0.144 hours <br />8.581349e-4 weeks <br />1.974795e-4 months <br /> the hydrogen supply from the hydrogen storage facility was secured and the flame was extinguished. At 1109 hours0.0128 days <br />0.308 hours <br />0.00183 weeks <br />4.219745e-4 months <br />, a detailed review of the event determined that the emergency plan criteria for declaration of an Unusual Event existed due to a flame greater than 15 minutes in the Protected Area. This report is being provided within one hour of the discovery of the undeclared event. As discussed in NUREG 1022, Revision 2, an actual declaration of an Unusual Event is not necessary. The basis for the emergency classification no longer existed at the time of discovery.
The safety significance of this event is minimal. There was no known damage to plant equipment and no adverse effect to any plant safety systems. This event had no impact on the health and safety of the public. The NRC Senior Resident Inspector has been notified, as well as the State and local governments. |
| Where | |
|---|---|
Brunswick  North Carolina (NRC Region 2) | |
| Reporting | |
| Emergency class: | Unusual Event |
| Other Unspec Reqmnt | |
| Time - Person (Reporting Time:+-3.02 h-0.126 days <br />-0.018 weeks <br />-0.00414 months <br />) | |
| Opened: | Lee Grzeck 12:08 Aug 2, 2012 |
| NRC Officer: | Dong Park |
| Last Updated: | Aug 2, 2012 |
| 48151 - NRC Website
Loading map... | |
Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 481512012-08-02T15:09:0002 August 2012 15:09:00
[Table view]Other Unspec Reqmnt Discovery of After-The-Fact Emergency Condition (Unusual Event) ENS 446472008-11-09T16:08:0009 November 2008 16:08:00 Other Unspec Reqmnt, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Scram Due to Spurious Srv Opening 2012-08-02T15:09:00 | |