Two radiographers were examining
welds on a tank when the magnetic stand that was attached to the side of the tank fell. The Amersham radiography camera (model 660B) was secured to the tank by a shackle and swung freely. This mishap damaged the guide tube extension and crimped the guide tube at the source connect. When the radiographers realized the source (65.2 Ci
Ir-192) was stuck they followed O&E (Radiographic Operating & Emergency) procedures and notified the FRSO (Facility Radiation Safety Officer). At that same time the radiographers reassessed the area and established appropriate boundaries.
The tank being examined was in an area away from the general public, therefore the public was not exposed. The FRSO, in retrieving the stuck source, was not over exposed.
Both individuals on the job-site, as well as the FRSO are carded radiographers. FRSO is also trained in source retrieval.
Corrective actions planned by the licensee to prevent recurrence of this incident is to use two lifts instead of one, which should prevent the stand from falling to its farthest point.