The following information was received by email:
Oregon Radiation Protection Services was notified by email on 2/20/13 at 11:28 a.m. [PDT], by Curtis Kreil, RSO, a representative of Carestream Health, Inc., of one tritium exit sign discovered missing during a 6-month radioactive material inventory check on 2/6/13. The sign was last inventoried on 8/1/12. A site-wide email alert was issued regarding the missing sign.
Exit sign details are:
Manufacturer: SRB Technologies
Model: Betalux E
Serial Numbers: 258030
Radioactive material: H-3
Activity: Nominal 20 Ci (on 10/2/02), currently 11.2 Ci (2/20/13)
Engineers and technicians are currently aware of the location of the [remaining] exit signs and monitor their presence. The licensee added discussion information into their Radiation Safety Training document regarding the exit signs and awareness of their location to assist in timely reporting of any future issues as a corrective action.
Oregon Incident: OR-13-0011
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