The licensee provided the following information via email:
As a result of a recent routine inspection, the licensee made report on June 12, 2006, of a lost/missing Pd-103 brachytherapy seed originally containing 3.39 millicuries of Pd-103 on April 20, 2004 and discovered lost/missing on the same date (April 20, 2004)
The seed was never found and was believed to have been disposed of as non-radioactive trash within a cartridge on April 20, 2004. The Pd-103 contained in the seed has a short half-life of 17 days.
A nurse handling the cartridge with one remaining seed in the operating room likely disposed of the cartridge and seed into non-radioactive trash. The licensee concluded that such disposal of the single seed contained in the cartridge would not generate any noticeable radiation exposure to the general public.
The licensee provided additional training to nurses who handle cartridges in the operating room.
Report number 06-6414
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.