ENS 46632

v t e ENS Event
14:30 Feb 20, 2011
Title	Agreement State Report - Fly Ash Gauge Shutter Failure
Event Description	The licensee uses industrial fixed gauges for measuring densities in fly ash hoppers. The industrial fixed gauges contain a 50 milliCurie Cesium 137 sealed source. The sources were manufactured and installed by Kay Ray, Inc. While the licensee was performing maintenance on the gauges, the remote source closure mechanism on 3 of the gauges did not operate as designed and the shutter did not close when operated by the handle on the floor. The chain that operates the source shutter mechanism 20 feet above the floor was disconnected which allowed the spring loaded shutter to close. No personnel were exposed to radiation during this event.

ENS 46632 +/-
Where
Omaha Public Power District Omaha, Nebraska (NRC Region 4)
License number:	01-39-04
Organization:	Ne Div Of Radioactive Materials
Reporting

Agreement State
Time - Person (Reporting Time:+8 h0.333 days <br />0.0476 weeks <br />0.011 months <br />)
Opened:	Julia Schmitt 22:30 Feb 20, 2011
NRC Officer:	Dong Park
Last Updated:	Feb 20, 2011
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v t e Emergency Notification System
Omaha Public Power District with Agreement State
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