ENS 46850

v t e ENS Event
05:00 May 11, 2011
Title	Agreement State Report - Shutter Stuck Open on Nuclear Gauge
Event Description	The following information from the State was received by email: On May 12, 2011, the Agency [Texas Department of Health] was notified by the licensee that while performing a routine inspection of a Ohmart/Vega model SH-F2 nuclear gauge containing 200 milliCuries of Cesium (Cs) - 137 they found the shutter for the device stuck in the open position. The licensee believes the probable cause for the event is a buildup of debris in the operating mechanism of the gauge. The gauge is used for level detection on a vent stack in an area of the plant not routinely occupied. The licensee is lubricating and trying to cycle the shutter frequently. The licensee has contacted a service provider to assist them if needed. No exposure to any personnel has occurred due to this event. Additional information will be provided as it is received in accordance with SA-300. Texas Incident No: I-8849 * * UPDATE FROM ART TUCKER TO CHARLES TEAL VIA EMAIL ON 5/18/11 @ 0915 EDT * * * On May 16, 2011, the licensee reported that the repeated lubrication of the shutter was successful and that the shutter was now working as designed. The report also stated that the event was discovered on May 11, 2011, not May 12, 2011, as first reported. Notified R4DO (Shannon) and FSME (McIntosh).

ENS 46850 +/-
Where
Union Carbide Corporation Port Lavaca, Texas (NRC Region 4)
License number:	00051
Organization:	Texas Department Of Health
Reporting

Agreement State
Time - Person (Reporting Time:+51 h2.125 days <br />0.304 weeks <br />0.0699 months <br />)
Opened:	Art Tucker 08:00 May 13, 2011
NRC Officer:	John Knoke
Last Updated:	May 18, 2011
46850 - NRC Website
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v t e Emergency Notification System
Union Carbide Corporation with Agreement State
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