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Radiological zoning

Abstract

The internal spaces of all nuclear facilities are divided into zones, which correspond to the levels of radioactivity and contamination they are destined to experience during their normal day-to-day operations. This chapter describes these radiological zones, the various naming conventions that are applied to them, and the principles that govern how they are established. This includes variations that result from whether radioactive contamination is airborne or located on exposed surfaces. It also describes the situations that can result in application of dual radiological classifications to the same area of a building, and the circumstances in which radiological zones may be applied to pockets of the external ...

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