Final answer:
An important feature of a hot work permit is the duration of the work shift. Roles that increase radiation exposure include tasks in medical diagnostics, nuclear industries, and laboratories handling radioactive materials.
Step-by-step explanation:
An important feature of a hot work permit includes the duration of the work shift. Hot work permits are essential for safe operations within an industrial or construction setting when activities involve welding, cutting, soldering, or any other operations that produce flames or heat. These permits help manage and mitigate potential fire hazards.
As for the types of work likely to cause an increase in the radiation exposure of a particular worker, these could include tasks performed in medical radiography, nuclear power plants, industrial radiography, and research laboratories using radioactive materials. Jobs that involve handling of X-ray machines, CT scanners, and other diagnostic imaging equipment also carry an increased risk of radiation exposure. It is crucial to follow proper safety protocols, including the use of shielding and protective clothing, when involved in such work.