For individuals working with unsealed sources, what percentage of ALI indicates the need for monitoring?

Monitoring is a critical component for individuals working with unsealed sources of radioactive material, and the regulation often stipulates a specific threshold of the Annual Limit on Intake (ALI) that necessitates this monitoring. The correct percentage is 2% of the ALI.

The rationale behind setting the monitoring threshold at 2% is to ensure that workers are adequately protected from potential overexposure to radiation. If an individual's intake exceeds this level, monitoring becomes essential to track dose accumulation and implement necessary safety measures. This proactive approach is aligned with regulatory standards to maintain health and safety in environments where radioactive materials are used.

This percentage serves as a protective measure, ensuring that early intervention can occur if an individual approaches significant intake levels that could impact their health. It emphasizes the importance of regular assessment and monitoring in managing radiation safety for personnel who have direct exposure to unsealed radioactive sources.