Where should a personnel monitor ideally be worn?

A personnel monitor is designed to measure radiation exposure to individuals working in environments where radiation is present, such as radiography. Wearing the monitor at the collar over a protective apron is the recommended practice because this positioning allows for optimal detection of any scattered radiation that reaches the individual.

When the monitor is placed at the collar, it is positioned near the most likely point for exposure, especially in situations where the head and neck may be more exposed to radiation. Placing it over the protective apron ensures that the monitor accurately records exposure levels without being influenced by any attenuation that the apron may provide.

This practice helps in providing accurate readings of personal radiation doses and ensuring that individuals can monitor their exposure effectively. It also aids in compliance with safety standards and regulations for radiation protection.