At 1853 hrs
CST on June 30, 2006, University of
Minnesota Medical Center, Fairview Riverside Hospital notified the
Minnesota Department of Health that seven Palladium-103 seeds had been lost.
At approximately 1500 hrs on June 30, 2005, the licensee completed a seed implant for prostate cancer. At the completion of that procedure, a scrub tech removed the tray from the area. The physicist reported 39 unused seeds ten of which were most probably on a partially used ribbon. (The licensee was using a MIC applicator.) When the nuclear medicine technologist inventoried the sources, only 29 were present. The facility located two seeds in a sink and a third in the drain of that sink. The Radiation Safety Officer believes that the seven lost sources are in the sewer system.
Each seed is 1.2 mCi of Palladium-103.
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.