The following information was received via E-mail:
On 03/23/18, the Radiation Safety Officer (RSO) (appointed RSO since the merge with TEAM) contacted RHB (California Department of Public Health, Radiologic Health Branch) to report an occupational overexposure to one of their radiographer trainers. On 03/22/18, the licensee was made aware of an overexposure to a trainer when the trainer's instadose dosimeter was processed. The badge reading indicated a whole body exposure of 5769 mR (licensee processes instadose dosimetry every two weeks for all the users). Further investigation revealed that the radiographer assistant that worked with this trainer also received a whole body exposure of 4583 mR. Preliminary investigation indicates the individuals may have received the recorded exposure during radiographic operations conducted at Chevron Refinery, Richmond, CA, where the source apparently may not have been fully retracted into the shielded position following an exposure. It is believed that a confirmatory survey was not performed following the exposure.
The exposure device involved is an INC-IR100 camera, device S/N 6756, with an activity of 88.9 Ci of Ir-192.
Both individuals have been removed from any radiographic operations. The exposure device was inspected and did not show any signs of defects or damages. The licensee's investigation is ongoing and RHB will be following up on this incident.
Note: RHB is in the process of merging the two licenses, Qualspec, LLC and Team Industrial Services RML # 6720.
California 5010 Number: 032318