ENS 46704
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ENS Event | |
|---|---|
05:55 Mar 29, 2011 | |
| Title | Electrical Fire in the Drywell on a Piece of Lifting Equipment |
| Event Description | At approximately 0145 EDT, the Unit 1 control room was notified of elevated carbon monoxide (CO) levels in the Unit 1 Drywell. The cause of the elevated CO was a small fire on a 'Lift-A-Loft'. The fire was immediately extinguished followed by an evacuation of all personnel from the Drywell.
Follow up atmosphere samples indicated carbon monoxide levels above the OSHA Threshold of 50 PPM. Readings were as high as 79 PPM and have been slowly lowering since the initial response. These values are considered to affect the health of plant personnel or safe plant operation and an Unusual Event was declared at 0155 EDT. As of 0225 EDT, all values within the Unit 1 Drywell have been confirmed to be below the 50 PPM threshold. As of 0226 EDT, the Unusual Event has been terminated. There were no injuries, no offsite assistance required, and the NRC Senior Resident Inspector responded to the site. The licensee notified the NRC Senior Resident Inspector, the State Emergency Communication Center, and the Oswego County Warning Point. No press release is planned. |
| Where | |
|---|---|
Nine Mile Point  New York (NRC Region 1) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-3.12 h-0.13 days <br />-0.0186 weeks <br />-0.00427 months <br />) | |
| Opened: | Bethany Hinckley 02:48 Mar 29, 2011 |
| NRC Officer: | Joe O'Hara |
| Last Updated: | Mar 29, 2011 |
| 46704 - NRC Website
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WEEKMONTHYEARENS 537652018-12-02T05:00:0002 December 2018 05:00:00
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