The following was received from the State of
California by email:
On 12/03/18, the RSO [Radiation Safety Officer] contacted CA Office of Emergency Services (OES) to report a stolen density gauge. The gauge involved is a Troxler Model 4640-B, S/N 1292, containing 9 mCi of Cs-137 (thin lift asphalt density gauge). The parked vehicle [in San Francisco, CA] was broken into and the gauge was stolen during overnight hours. According to the RSO, at the time of the theft, the gauge was locked inside a Type A container with additional locks securing the gauge to the vehicle. The gauge user was enroute to a field job in the area near Quality Inn where the theft occurred.
The RSO has immediately notified South San Francisco Police Department of the theft (Report # 18-7086). Licensee will be posting a reward for safe return of the gauge. RHB [CA Department of Public Health - Radiologic Health Branch] will be following up on this investigation.
5010 Number: 120318
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