The following is a summary of information provided by the
Colorado Department of Public Health and Environment via email:
The licensee, Medical Center of Aurora, discovered a leaking sealed source on December 18, 2023, during a routine semi-annual inventory and leak test. The sealed source is an Eckert and Ziegler (Serial Number 1360-6-20) Cs-137 vial with estimated current activity of 0.136 millicuries. The plastic vial had been stored in a lead box since the last inspection, but it was discovered that the plastic was cracked. Wipe test showed 0.052 microcuries of removable activity inside the storage box. No contamination was found outside of the box. The source vial will be wrapped in several layers of plastic to stabilize it and limit contamination inside the box. The licensee has contacted the manufacturer to return the source.
Colorado Event Number:
CO230044