The following report was received by the
California Radiation Control Program (the Agency) via email:
On April 21, 2025, the licensee's radiation safety officer (RSO) contacted the Agency to report the theft of a Troxler 3440 moisture density gauge, serial number 31320. The theft occurred on April 20, 2025, at 2240 PDT at a jobsite in Los Angeles, California. The Los Angeles Police Department was contacted, and a police report was filed. The Troxler gauge contains an 8 mCi cesium-137 sealed source and a 40 mCi americium-241/Be sealed source. The investigation is ongoing.
California 5010 Number: 042125
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