Event Notification Report for September 08, 2026

LOST SOURCE

The following information was provided by the licensee via phone:

On August 28, 2026, the licensee discovered the 100 mCi Am-241 source for a Filltech model FT-50 level gauge (S/N 115319) could not be located during a physical inventory. The empty housing was subsequently located inside the facility, but the source was missing. No transfer records associated with the source were located. The licensee continues to search for the source.

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