Which piece of monitoring equipment should be used routinely to improve radiation safety?

While working in an environment where an individual is routinely exposed to radiation, he should be equipped with instruments that improve radiation safety. This includes:
1. Optical viewing device and windows. so that the rays are filtered before they enter the operator's eyes.
2. PPE - Personal Protective Equipment (PPE) should be worn by the operator and precaution should be taken while handling radiating objects.
3. Protective Housing: The house where radiating instruments and objects are kept should be kept shielded to avoid any escape of radiation from the house.

Idont have idea about ir