During their biannual inventory, the licensee could not account for two
tritium exit signs. Both signs were accounted for in the previous inventory. The first sign was installed in a wind tunnel that was transferred to the Air Force in 2006. After obtaining the wind tunnel, the Air Force claims to have removed the sign and, after a period of storage, recycled the sign with the others that were removed from the tunnel. The sign was manufactured on 7/20/94 by SRB Technologies (serial number 174501). The initial
tritium load was 20 Ci. Calculated content on 2/26/10 was 8.33 Curies.
The second sign was installed in a building on Moffitt Field that is currently undergoing renovation. It is believed that the sign is under the control of the renovation contractor after is was removed during the painting process. The sign was manufactured on 5/1/91 by SRB Technologies (serial number 526854). The initial tritium load was 20 Ci. Calculated content on 2/26/10 was 6.95 Curies.
Both signs have contact information for the licensee attached. The licensee is conducting a search for both signs. They have notified Region 4 (Campbell).
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