The State of
Texas submitted the following information via e-mail:
On September 3, 2010, the [State of Texas] received a phone call from the licensee informing them that on September 2, 2010, while conducting routine gauge inspections, the shutter on an Ohmart Vega model SH-F1-A nuclear gauge failed to close. The gauge contains two milliCuries of Cesium (Cs) 137. Open is the normal operating position for the gauge. Radiation surveys in the area of the gauge were measured and were normal. The licensee tried to free the shutter operating mechanism using light oil, but it did not respond. The licensee stated that the gauge is 11 feet off of the ground and there is no access to it without the use of scaffolding and it does not pose a risk of exposure to anyone. The licensee will contact the manufacturer to request repairs on the gauge.
Texas Incident No. I-8779.