Print View Posted on: 04 March 2014
The Texas Department of State Health Services was informed of an incident involving industrial radiography of a pressure vessel. A site foreman was present in the work area with the radiographer. The radiographer approached the source collimator to change the film and realized the source was still in the exposed position. It is estimated that the site foreman received an unintended dose. The site foreman reported he was in the area for 5-8 minutes and approximately 12-24 inches from the source. A calculated dose for 8 minutes at a distance of 1 foot from the 67 Ci Ir-192 source was 40 rem. The radiographer’s badge is being sent for analysis. NRC EN49623.. UPDATE: After further investigation, the dose to the radiographer was calculated at 21 mSv (2.1 rem), which is not in excess of the statutory limit for radiation workers. However, dose to the site foreman was calculated at 5.15 mSv (515 mrem), in excess of the statuory limit of 1 mSv (100 mrem). EN49623.