Radiation Safety Practice Exam

What is the maximum occupational radiation exposure allowed for adults per year?

1. 500 mREM

2. 1000 mREM

3. 5000 mREM

4. 100 mREM

The correct answer is: 5000 mREM

The maximum occupational radiation exposure allowed for adults per year is set at 5000 mREM, which is equivalent to 5 REM. This limit is established by regulatory agencies such as the Occupational Safety and Health Administration (OSHA) and the Environmental Protection Agency (EPA) to ensure the safety of workers who may be exposed to radiation in their occupations. The rationale behind this limit is to provide a balance between allowing individuals to work in necessary jobs that involve radiation exposure while also protecting their health. The established threshold considers both the potential biological effects of radiation exposure and the average levels of radiation that workers may encounter in fields such as healthcare, nuclear energy, and research. By setting this limit, the agencies aim to minimize the risks related to radiation exposure, such as increased chances of cancer or genetic damage, while still permitting essential activities that involve radiation. This limit applies specifically to chronic exposure over the course of a year, reflecting the cumulative effect of radiation and the importance of monitoring long-term exposure levels among occupationally exposed individuals.