ENS Event | |
|---|---|
22:30 Sep 21, 2010 | |
| Title | Agreement State Report - Damaged Fixed Gauge |
| Event Description | The State of Iowa was notified by Louisa Generating Station, a coal-fired electrical generating plant, that a fixed gauge source had been damaged.
The facility has two 50 mCi Cs-137 sources attached to coal crushers. The gauges are used as low level alarm detection devices and detect whether or not coal is in the hopper at any given time. At approximately 5:30 p.m. on 9.21.10 there was a machine failure. [The licensee] suspects that as a result of the failure there was vibrational damage to one of the gauges (manufactured by Texas Nuclear, housing model 5192, serial number B2724). The gauge was visibly damaged but has not resulted in elevated rad levels. No employees were exposed as a result of this event. The gauges are mounted 15 ft from the floor in a building that is not occupied by staff. The machine (coal crusher) remains out of service since the time of failure on 9.21.10. Again, [the licensee] reports no source damage. Their calibrated instrument reads 0.5-1.0 mrem 1 ft from the source, 0.2-0.3 mrem at 2 ft and 0.1 mrem at 3 ft from the source. A technician out of Illinois is scheduled to arrive at the facility on Tuesday, September 28th for further testing and possible repair. The gauge is located in a contained building. The shutter is normally open and the suspected vibration damage resulted in being unable to close the shutter. |
| Where | |
|---|---|
| Mid-America Louisa Gen Station Muscatine, Iowa (NRC Region 3) | |
| License number: | 0040-1-70-FG |
| Organization: | Iowa Department Of Public Health |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+14.93 h0.622 days <br />0.0889 weeks <br />0.0205 months <br />) | |
| Opened: | Melanie Rasmussen 13:26 Sep 22, 2010 |
| NRC Officer: | Donald Norwood |
| Last Updated: | Sep 22, 2010 |
| 46267 - NRC Website | |
Mid-America Louisa Gen Station with Agreement State | |
WEEKMONTHYEARENS 462672010-09-21T22:30:00021 September 2010 22:30:00
[Table view]Agreement State Agreement State Report - Damaged Fixed Gauge 2010-09-21T22:30:00 | |