The following information is a summary of a report provided by the State of
North Carolina via facsimile:
A state inspector performed an inspection on April 20, 2010, and learned that a radiation source (Ra-226, 20 microCuries) used in the facility's liquid scintillation counter, Packard Tri-Carb Model, was lost or missing. The RSO [Radiation Safety Officer] and inspector performed a survey of all the labs with a Ludlum Model 19 and were not able to find the source. In addition, it was found that no paperwork was available indicating proper source tracking, leak testing, or disposal of the source. A violation letter has been mailed to the RSO allowing the licensee thirty days to respond to the violation.
NC Incident No. 10-22.
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