The following information was provided via email:
On April 20, 2011 the Agency was notified that a radiography source had failed to retract to the shielded position because the material being radiographed had fallen on the guide tube and crimped it. Following company procedures, the Radiation Safety Officer was notified and the area was restricted to avoid public or excessive employee exposures.
Several entries were made to shield the source and allow an authorized individual to straighten the crimped portion of the tube within tolerable radiation fields. After several other trips to place lead shot on the source, four additional trips were required before the crimp in the source tube was straightened and the source was retracted into the shielded position.
The source retriever and his assistance received nominal radiation exposures during the procedure and no public exposures reportedly occurred. No violations were cited.
Texas Incident #: I-8838.