During the performance of industrial radiography, the licensee radiographer taped the radiography camera’s guide tube to a jig in preparation for an exposure shot. During the exposure shot, the guide tube fell and the radiographer re-taped it to the jig without first retracting the source back inside the camera. A re-enactment of the event demonstrated that the radiographer had placed his left hand on the camera's collimator and inserted his middle finger into its port hole. Based on the re-enactment, the licensee determined that the radiographer received an overexposure of 4.67 Gy (467 rad) to a finger on his left hand. The U.S. statutory limit for extremity doses is 0.5 Sv (50 rem). The finger appeared to have shown some slight redness, however, blood work results were determined to be normal. The dosimetry badge results revealed a whole body exposure of only 9.37 mSv (937 mrem), which is below the statutory limit of 0.05 Sv (5 rem). NRC EN51921
Location: Deer Park Texas/Mistras Group, Inc. Event date: Wed, 11-05-2016
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