The following was received via email from the
Nebraska Department of Health and Human Services:
Nebraska Department of Health and Human Services, Office of Radiological Health followed up with a phone call to Nebraska General Licensee GL0762 concerning their Annual Radioactive Materials License Renewal and Inventory Sheet on 2/7/2019. The licensee indicated over the phone that 2 tritium exit signs have not been seen or on the property since at least August 2018. The licensee was instructed to search the entire facility and report their findings.
On 2/8/2019, the licensee conducted a complete search of the property grounds and could not locate the exit signs. Records were searched and no indication was made to the disposal of the signs. The property manager believes that they may have been disposed of in the regular trash and moved to the local landfill.
The exit signs were from the Isolite Corporation, model SLX60, containing 6 Curies of H-3 each.
State Event Report ID No.: NE-19-0001
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