Radiation monitoring of personnel is mandatory when what percentage of the annual occupational effective dose limit is likely to be received?

Radiation monitoring of personnel is required when there is a likelihood that individuals will receive 10% or more of the annual occupational effective dose limit. This threshold is established to ensure that any potential exposure to radiation is closely tracked, allowing for necessary precautions and interventions to safeguard the health and safety of individuals working in environments involving radiation.

This monitoring is essential in maintaining compliance with safety regulations, as it helps manage exposure levels and ensures that radiation workers are informed about their exposure, which is critical for minimizing health risks associated with radiation. The choice of 10% is a standard guideline adopted by many regulatory bodies, balancing the need for oversight with the practicality of monitoring efforts.

In contrast, other percentages such as 5%, 15%, and 20% do not align with the established regulatory thresholds for when monitoring becomes mandatory, reflecting different levels of risk and exposure that do not necessitate the same monitoring rigor as the 10% threshold.