The following was received via email from the state of Texas:
On July 9, 2010, the Agency [Texas Department of Health] was notified by the licensee that one of their technicians had reported that a moisture/density gauge had been stolen from his truck that morning. The gauge is a Humboldt model 5001 EZ (serial # 4438) containing a 40 millicurie Americium (Am) 241 source, and a 10 millicurie Cesium (Cs) 137 source. The technician had completed testing on concrete rebar and returned to his truck. He found the tailgate down and the two locked chains used to secure the gauge in the truck bed had been cut. The gauge and additional equipment were missing. The technician searched the area for the gauge and when he could not find it, contacted the company Radiation Safety Officer (RSO). The RSO stated that the truck was parked in a position where the technician could not see it while he was performing his testing. The RSO contacted Local Law Enforcement and informed them of the event. A reward will be offered for the gauges return. The RSO stated that he will have the technician provide a written report, which he will forward to this Agency [Texas Department of Health]. Additional information will be provided as it is received in accordance with Reporting Material Events - SA-300.
Texas Incident #: I-8761
THIS MATERIAL EVENT CONTAINS A "LESS THAN CAT 3" LEVEL OF RADIOACTIVE MATERIAL
Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf
This source is not amongst those sources or devices identified by the
IAEA Code of Conduct for the Safety & Security of Radioactive Sources to be of concern from a radiological standpoint. Therefore is it being categorized as a less than Category 3 source