The facility is a General License: 056-0600-0G that went out of business effective June 1, 2012. [North Carolina State] did an inspection on June 11, 2013 and [the licensee] had no records of inventory or sources or records of disposal. [The state] was able to determine from [state] records that [the licensee] had disposed of all sources except one on [the licensee's] inventory dated 6/13/1995. [The missing device contains] a
Sr-90 [source] with a less than 25 micro Curie source, S/N 49874, that was purchased from
CMI. [The state] called
CMI and the
RSO [Radiation Safety Officer] did not have any records of [the device] being disposed. The source is lost and missing so [the state] is filing this incident with the NRC today.
North Carolina Incident Report Number: 13-12. The state considers this incident to be closed.
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