The State provided the following information via email:
Licensee had submitted license renewal application. RFI from ODH requested info on disposition of sources to be removed from the license. One H-3 foil source from a Varian Aerograph ECD was reported as having been disposed of on May 18, 2004. When asked to produce documentation, the licensee went back to their copy of the waste shipping manifest to find reference to the H-3 source. However, this source was not referenced on the manifest as being included in the shipment on the licensee's copy. The licensee has contacted the waste broker to investigate whether this source had been included in the waste shipment. Source was purchased in the late 1970's and was removed from service and placed in storage in the late 1990's. The source is now calculated to have an activity of 232 millicuries. The licensee will file a written report to ODH as required by Ohio regulations.
This source was part of an electron capture detector, Varian model 02-1681-01.
Ohio Item Number: OH050008
Notified the R3DO (Burgess), NMSS (Karas) and TAS (via E-mail).
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.