The following was received from the State of
Oklahoma via e-mail:
On May 14, 2010, Oklahoma Department of Environmental Quality (ODEQ) received telephone notification from American Airlines Maintenance and Engineering Center (AA) that they had lost one (1) tritium (H-3) radioluminescent exit sign containing a maximum total of 3.5 Ci of H-3. At this time, no further information is available; however, updates will be made to NMED as ODEQ receives updates from AA.
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