This document summarizes a study on health and safety at nuclear installations. It discusses both man-made and natural radiation sources and the associated health risks. It outlines key radiological parameters such as radiation dose rates that are monitored. It also summarizes relevant UK regulations regarding nuclear safety, including the Nuclear Installations Act, Health and Safety at Work Act, and Ionizing Radiations Regulations. The main goal of these regulations is to ensure radiation exposures are kept within safe limits to protect workers and the public.