The following information was obtained from the State of
Texas via email:
On August 18, 2011, the Agency [Texas Department of State Health Services] was notified that a Humboldt model 5001 EZ, serial number 4220, containing a 44 milliCurie Americium-241/Beryllium source and an 11 milliCurie Cesium-137 source was run over by a dirt compactor. The user placed the device on the ground 12 feet from his truck to perform prior to use checks on the gauge. The sources were in the fully shielded position. When the technician went to the cab of their truck to record readings, a dirt compactor came up out of a pit near the truck. The technician could not get the attention of the compactor driver in time to prevent them from driving over the gauge. The technician contacted the fire department and [informed] his manager of the event. The licensee's Radiation Safety Officer (RSO) and fire department both responded to the scene. The RSO conducted a radiation survey of the device and determined that the sources were fully shielded. A service company was contacted and they took the device to their facility. The service company performed leak tests on both sources. The results were below the regulatory limit. Additional information will be provided as it is received.
Texas Report # I-8879