ENS 45405

v t e ENS Event
04:00 Oct 2, 2009
Title	Shutter on Nuclear Gauge Failed to Close
Event Description	It was discovered on October 1, 2009, that a twenty-four hour event notification was not reported. The notification was required per 10 CFR 30.50(b)(2) due to [the] inability to close a fixed gauge shutter at TVA's (Tennessee Valley Authority) Widows Creek Fossil Plant. The gauge is a Texas Nuclear unit and contains 100 mCi of Cesium-137. The gauge is used to monitor the slurry surge tank in the U7 and U8 Limestone Ball Mill Building. This gauge is used under an NRC license to TVA at the Widows Creek Fossil Plant in Stevenson, Alabama. The shutter failure discovery was made during a routine shutter check on August 4, 2009. Corrective actions were taken to repair the shutter and the shutter check was successfully completed on August 17, 2009. No personnel radiation exposure was received. These corrective actions were reported in the Corrective Action Program.

ENS 45405 +/-
Where
Widows Creek Fossil Plant Chattanooga, Tennessee (NRC Region 1)
License number:	01-25207-01
Organization:	Tennessee Valley Authority
Reporting

10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure
Time - Person (Reporting Time:+8.88 h0.37 days <br />0.0529 weeks <br />0.0122 months <br />)
Opened:	Kevin Casey 12:53 Oct 2, 2009
NRC Officer:	Charles Teal
Last Updated:	Oct 2, 2009
45405 - NRC Website
v • d • e

v t e Emergency Notification System
Widows Creek Fossil Plant with 10 CFR 30.50(b)(2)
WEEKMONTHYEAR2009-10-02T04:00:00 [Table view]
[ENS list for Widows Creek Fossil Plant]

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