ENS Event | |
|---|---|
14:08 Nov 10, 2003 | |
| Title | Unusual Event Declaration Due to Release of Flammable Gas That May Impact Normal Station Operations |
| Event Description | A 1/8 inch sealant injection plug for the Main Generator was discovered out of it's location. This allowed the leakage of hydrogen gas into the Turbine Building. Fire Brigade leader responded and observed a flammable concentration of hydrogen. All available ventilation was initiated, and non-essential personnel were evacuated from the 75 foot level of the Turbine Building. Maintenance personnel responded and were able to reinstall the plug. Hydrogen levels were reduced to less than flammable. No radiological release occurred or is expected.
An Unusual Event was declared at 0908 on 11/10/2003 and terminated at 0908. Unusual Event was declared based on EAL 18a.3 - Release of toxic or flammable gas from anywhere near site or on site that may adversely impact normal station operations. The licensee notified the NRC Resident Inspector and New Hampshire. |
| Where | |
|---|---|
Seabrook  New Hampshire (NRC Region 1) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-4.38 h-0.183 days <br />-0.0261 weeks <br />-0.006 months <br />) | |
| Opened: | Mike Taylor 09:45 Nov 10, 2003 |
| NRC Officer: | Jeff Rotton |
| Last Updated: | Nov 10, 2003 |
| 40308 - NRC Website
Loading map... | |
Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 484132012-10-16T23:20:00016 October 2012 23:20:00
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