The following information was received from the State of
California via email:
On 10/30/17, California Office of Emergency Services contacted RHB [Radiologic Health Branch] to report a lost moisture density gauge. The lost gauge is a Troxler Model 3440, S/N 23171, containing 9 mCi of Cs-137 and 44 mCi of Am241/Be. According to the RSO [Radiation Safety Officer], the gauge user left the gauge on the tailgate of his truck without properly securing it, and drove off to the next job site. A passing driver alerted the gauge user of a falling object from his truck at the intersection of Floyd Street and Oakdale Street in Modesto, CA. The user immediately went back to the intersection, but was unable to locate the gauge. The RSO has notified the Modesto Police Department of this incident. He will be posting a reward for the safe return of the gauge on Craigslist. The RHB will be following up on this investigation.
5010 Number: 103017
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