What is the maximum permissible dose for radiation workers in system international units?

The maximum permissible dose for radiation workers is set to ensure a safe working environment while allowing for the necessary exposure that comes with their duties. In this context, the correct answer is 50 mSv (5 REM) per year. This limit is established by organizations such as the International Commission on Radiological Protection (ICRP) and the National Council on Radiation Protection and Measurements (NCRP), which focus on occupational safety.

This annual limit reflects a balance between enabling radiation workers to perform their tasks effectively and ensuring that the risk of long-term health effects, such as cancer, remains low. By setting this threshold, regulatory bodies aim to manage the cumulative risk associated with radiation exposure.

Other proposed doses do not align with the current guidelines for occupational exposure. The levels above 50 mSv, such as 100 mSv or 75 mSv, significantly increase the risk of detrimental health effects over time, making them unsuitable as maximum permissible doses for workers in radiation settings. Therefore, the choice of 50 mSv is the most appropriate and reflects current safety standards in radiological practice.