ASNT Industrial Radiography Radiation Safety Practice Test

In Category II exposure devices, how is the source exposed?

1. By manual means

2. By mechanical means outside the shielded container

3. Through an electronic trigger

4. Automatically without human intervention

The correct answer is: By mechanical means outside the shielded container

In Category II exposure devices, the source is exposed by mechanical means outside the shielded container. This design allows for a more controlled and safe method of handling radiation sources. Since Category II devices often have a radiation source that is moved into position using a mechanical mechanism, it minimizes direct human exposure to radiation. The mechanical exposure is typically operated from a distance, which reduces the risk of radiation exposure to the operator. This method is crucial in maintaining safety protocols, as it enables users to manage the exposure with a clear understanding of radiation safety practices. The distinct separation between the source and the operator's workspace enhances safety during radiographic procedures. Understanding this mechanism is essential for training and operational practices, emphasizing the importance of mechanical means in ensuring the safety of personnel working with ionizing radiation.