The following information was provided by the State of California:
S-2 Engineering reported the loss of a Troxler 3411-B # [S/N] 12398 moisture density gauge that had been in storage at a job site in Barstow, CA. This device contains 0.296 GBq (8 mCi) of Cs-137 and 1.48 GBq (40 mCi) of Am-241.
The licensee was conducting a physical inventory of their devices containing radioactive material and found this one to be missing from the locked storage box.
The licensee checked with all of their authorized gauge users to determine if the device was in use but not checked out properly before reporting it as lost. The last documented use of the density gauge was Sept. 22, 2016.
This investigation is ongoing.
The licensee notified their Local Law Enforcement Agency (LLEA) of the theft.
CA 5010 Number: 050417
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