Which dosimetry equipment must be worn by trainees performing industrial radiography?

The pocket dosimeter is the correct choice because it serves as a personal monitoring device that provides real-time assessments of radiation exposure levels. Trainees in industrial radiography are often required to monitor their exposure to ionizing radiation, and a pocket dosimeter allows them to do this effectively by providing immediate feedback about their radiation dose throughout the day.

This device is designed to be worn on the person, often clipped to a pocket or belt, allowing for easy access and frequent checks. The readings help ensure that trainees are maintaining exposure well below established safety limits. Regular monitoring is crucial in environments where radiation exposure is possible, enabling trainees to take necessary protective actions if their exposure levels approach safety thresholds.

Personal protective equipment, lead aprons, and radiation warning signs, while important for safety in radiological environments, do not provide the same level of personal, immediate feedback on radiation exposure that a pocket dosimeter does. These items are more about the general safety of the environment and protecting against radiation rather than continually monitoring individual exposure.