The Unauthorized Use of a Radiography Source
A construction company holds a license for industrial radiography using a 100 Ci iridium-192 source. The license authorizes use at temporary job sites, but requires a minimum of two radiographers, one of whom must be a certified radiographer. On a Friday afternoon, a certified radiographer and a radiographer's assistant are assigned to a job site. The assistant is not certified. The certified radiographer leaves the site to retrieve a forgotten piece of equipment, leaving the assistant alone with the source. The assistant, wanting to finish early, decides to perform a weld inspection alone. He sets up the source, but the survey meter is not functioning, so he uses a spare meter that is not calibrated. He completes the exposure and leaves the site. The next day, the RSO reviews the job log and notices the certified radiographer's signature is missing from the exposure record. The RSO investigates and discovers the assistant performed the exposure alone. The RSO must determine the violations and the appropriate response.
1. List the specific regulatory violations evident in this scenario and explain why each is a violation.
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Violations: (1) The assistant performed radiography without direct supervision of a certified radiographer, violating the license condition requiring two radiographers, one certified. (2) The assistant was not certified, so he was not authorized to operate the source. (3) The survey meter used was not calibrated, violating the requirement to use calibrated survey instruments. (4) The exposure record lacked the required signature of the certified radiographer, violating recordkeeping requirements. (5) The certified radiographer left the site, abandoning the source, which violates the requirement for continuous attendance or secure storage. (6) The assistant did not perform a radiation survey before and after the exposure, as required. Each violation represents a failure to comply with license conditions and regulatory requirements, potentially leading to enforcement action.
2. What enforcement actions might the regulator take, and what factors would influence the severity of the penalty?
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The regulator may issue a notice of violation, impose civil penalties, or take escalated enforcement such as a confirmatory order or license suspension. Factors influencing severity: (1) The violations were willful and deliberate (the assistant knowingly performed unauthorized work). (2) The certified radiographer abandoned the source, showing a lack of safety culture. (3) The use of an uncalibrated meter indicates a failure of the radiation protection program. (4) The company self-identified the issue through the RSO's review, which may mitigate penalties. (5) The company's history of violations and corrective actions taken. (6) The potential for harm (the assistant could have been exposed to high radiation levels). The regulator will likely consider the deliberate nature and the multiple violations as aggravating factors, but may credit the company for prompt identification and remediation. The company should expect significant penalties and may need to implement a comprehensive corrective action plan.