Factors influencing the degree of alignment between the classification of areas and the classification of persons at a CAGR power station

The revised Basic Safety Standard (BSS), Directive 96/29/Euratom, continues to promote the principles of classifying workplaces into different areas and workers into different categories. These requirements were present in the previous BSS and are enshrined in current United Kingdom Legislation. The opportunity is taken to look at the relationship between the classification of areas and the classification of persons in the context of a Commercial Advanced Gas Reactor (CAGR). The radiation exposure statistics for eight years of operation have been reviewed to determine if the criteria for classifying Controlled Areas and for classifying Category A workers are in alignment. The data shows that there is a significant misalignment and the reasons for this are explored. The likely impact on the classification of areas and of workers through the implementation of the revised BSS is also considered in the CAGR context. (author)