Where should a personnel monitoring device be worn during working hours?

A personnel monitoring device should be worn at the waist or on the collar during working hours to ensure accurate measurement of radiation exposure. This placement allows for consistent monitoring of the individual's dose while they are performing their duties, as it is positioned close to the body’s radiation exposure pathways.

The waist and collar areas are often the most representative locations for monitoring, as they correspond to the typical radiation exposure levels experienced in various activities. Wearing the device at these locations minimizes the possibility of interference from clothing or other equipment that might shield the device from radiation.

For example, if the device is worn on the wrist or ankle, it may not provide a true reflection of the radiation dose to the body, as these areas can be influenced by movement and distance from the source of radiation. Ultimately, wearing the monitoring device correctly is crucial for compliance with safety regulations and for effective health protection.