The following information was received from the State of Nevada via email:
Around 0900 PDT on September 14, 2018 the State of Nevada Radiation Control Program was informed by Aztech Inspection & Testing, LLC, RML 00-11-0482-01, that a Humboldt, Model 5001EZ, Serial Number 1142, containing 10 millicuries (mCi) of cesium-137 and 40 mCi americium-241: beryllium, was stolen from the licensee's vehicle parked in the parking lot of the gauge user's residence. The gauge was secured to the steering wheel using a chain and lock inside of the cab of a locked pickup truck. The State is following the incident and working with local authorities to develop a press release. Local Law enforcement and the FBI have been notified. Follow-up information will be provided to NRC on the recovery of the stolen gauge and entered into NMED [Nuclear Material Event Database].
Nevada NMED report number NV180004
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