The following is a synopsis from a phone call:
At Brooke Army Medical Center, two I-125 seeds were lost on October 16, 2018. One source was 156 microCuries and the second source was 158 microCuries, totaling approximately 314 microCuries at the time. The sources were not realized missing until March 13, 2019, when the activity would have been approximately 28 microCuries each, totaling 56 microCuries.
Investigation is ongoing and actions to prevent recurrence are being implemented. There was no significant exposure above dose limits.
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