The following report was received via email from the State of
Nebraska Division of Radioactive Materials:
Adams Land and Cattle reported that they have a missing [tritium] exit sign. The sign was purchased in January of 2007 from SRB Technologies. We do not have the serial number at this time.
They discovered that it was missing when doing the annual inventory. The sign may have been broken several months ago and was likely disposed of in the regular trash. The trash is taken to the Custer County landfill. The general licensee is checking with the employee who disposed the sign and trying to find out additional details.
We will report additional information once the general licensee has additional information.
Source/Radioactive Material: SEALED SOURCE LUMINOUS
Manufacturer: SRB TECHNOLOGIES INC
Model Number: BX-10-WH
Radionuclide: H-3
[Activity]: 9.21 Ci, 340.77 GBq
Incident Number: NE120001
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
This source is not amongst those sources or devices identified by the
IAEA Code of Conduct for the Safety & Security of Radioactive Sources to be of concern from a radiological standpoint. Therefore is it being categorized as a less than Category 3 source