On May 23, 2016 DBI Inc. (Lic# 15-29301-02) had an Industrial radiography crew working outside of Elmer, MO (Approx. 3hrs from Overland Park, KS Office). At approximately 1315 [CDT] during the crews first source retraction it was determined that the source had become disconnected from the driver cable. The crew immediately recognized the situation though the use of their dosimetry equipment. The Corporate Radiation Safety
Officer [RSO], was immediately notified of the issue. [The RSO] informed the crew to establish the emergency barricades and to not attempt anything further with the exposure device. [The RSO] arrived at the job site at approximately [1620] to retrieve the source. The source was secured back into the exposure device by [1645].
Dosimeter readings were taken immediately upon discovery of the disconnect and monitored throughout the end of the day. Total recorded dose for the individuals involved was as follows:
[Worker 1] 18mR
[Worker 2] 12mR
[RSO] 3mR
Doses recorded fall within the normal expectations for the work that was performed.
Listed below are the relevant materials & equipment involved:
QSA Global 880 Delta exposure device. (S/N D6707)
QSA Global model A424-9 lr-192 Source (S/N 27422G) 33 Curies
QSA Global extreme weather 35' cranks (S/N KC-009)
QSA Global extreme weather 7' source tube with a 4hvl collimator (S/N KC-009)