The following information was provided by the
New Jersey Department of Environmental Protection via email:
During a state prompted inventory for license renewal, the licensee discovered the loss of a portable gauge. The last confirmed possession of the gauge was December 15, 2017, when it was marked in their logbook to be sent for maintenance. No manufacturers or service providers contacted have any record of the gauge past 2017.
Gauge description: Troxler Electronic Labs. Inc. model 3411-B, serial number: 18670, containing sealed sources: Cs-137, 9 mCi (max), Am-241/Be, 44 mCi (max)
New Jersey Incident Number: 506950 - INV250001
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