Experience

Experience with the rules over the years has shown little need to change the underlying principles and this has clearly been reflected by the comparatively low radiation doses received within the CEGB. Amend­ments have of course been made over the years, pri­marily due to changes in legislation and international recommendations. As the rules relate to work in es­tablishments where the Electrical and Mechanical Rules are implemented, account is also taken of the changes made to these.