The following information was provided by the
California Department of Public Health, Radiation Health Branch via email:
On January 8, 2024, the licensee's radiation safety officer contacted the California Office of Emergency Services to report a moisture/density gauge was stolen from a vehicle (Honda Pilot SUV) that was parked at the operator's residence. The gauge transport case was locked, as was the gauge inside the case, and the case was secured to the frame of the locked vehicle with a lock and chain. The gauge was a CPN model MC-3, serial number M339028680 containing 10 mCi Cs-137 (nominal) and 50 mCi Am:Be-241 (nominal). A police report was submitted to the Orange County Sherriff's Department. An advertisement has been submitted to the Orange County Register with a reward for return of the gauge. The licensee's investigation into this event is ongoing and will be reviewed further by the California Department of Public Health.
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