Overexposure to workers to radiografic source

Three workers were exposed to doses while working in a bunker. One worker was shielded, two were not.
The source is Se-75 1,5 TBq
Two workers were exposed to approx. 30 mSv, well above the annual limit of 20 mSv
The shielded workers dose was approx. 0.6 mSv.

None of the workers had dosimeters.

Location: Oceaneering Asset Integrity
Event date: Thu, 17-07-2014
Nuclear event report
Legenda & explanation