Occupational radiation monitoring is mandated when an individual might receive more than what fraction of the annual dose limit?

Occupational radiation monitoring is a crucial aspect of radiation safety, especially for individuals working in environments with potential exposure to ionizing radiation. The requirement for monitoring is based on the principle of ensuring safety and adherence to regulatory standards for radiation exposure.

When an individual is likely to receive more than one-tenth (1/10) of the annual dose limit, occupational radiation monitoring becomes mandatory. This threshold serves as an important protective measure to monitor an individual's exposure and ensure it remains within safe limits.

The annual dose limit for radiation exposure is established by regulatory bodies, and monitoring at this level allows for early detection of excessive radiation exposure. This enables preventive actions to be taken, such as modifying work practices or enhancing protective measures.

In comparison to the other fractions provided in the options, employing one-tenth as the threshold strikes a balance between safety and practicality in monitoring those who may be at risk. Hence, the choice selecting one-tenth as the standard for mandated monitoring aligns with established protocols and practices in radiation protection.