The following was received from the State of
Wisconsin Department of Health Services (the Department) via email:
On September 9, 2020, the licensee reported a missing 7.5 Ci Mo-99/Tc-99m generator, which was subsequently found, to the Department. The facility receives a generator every Sunday evening. On September 8, the licensee became aware that this week's generator was missing and initiated search efforts. The licensee confirmed with the generator supplier that a generator was delivered on September 6. The licensee reviewed security footage and determined that the generator was delivered at 2115 CDT on September 6. The licensee reviewed additional camera footage and determined that a different courier service requested access to the nuclear medicine hot lab about an hour later and took the package that had been delivered at 2115 CDT. The licensee contacted the second courier service and determined that the missing generator was found in the courier's warehouse on September 9. The generator has been returned to the licensee.
The licensee is evaluating potential dose to members of the public. The Department will perform a follow-up investigation.
Event Report No.: WI200006
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