The following was received from the State of
Nebraska via facsimile:
During the annual inventory certification cycle for Pacific Ethanol Aurora West, the licensee discovered two missing tritium signs. These signs were originally shipped March 3, 2011 with 11.5 curies of material. Current approximate activity calculated as of 12/29/2015 is 8.77 curies. Pacific Ethanol Aurora West shut down for an estimated 18 months between 2012 and 2014. It is assumed these signs went missing at this time."
The missing exit signs are Isolite SLX-60 with serial numbers 435489 and 435495.
Item number: NE150003
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