After the oil crisis in the seventies the main aims of ventilation research changed. Many energy saving measures had been taken by the authorities, among them the reduction of infiltration heat losses. The Ministry of Building and Urban Development ordered the production and installation of better quality airtight windows, and the draughtproofing of existing window assemblies.
The paper begins by developing the concept of CONTAINMENT and describes how the ventilation system of a nuclear plant plays amajor role in the provision of this CONTAINMENT and in ensuring that the plant can be operated safely. It continues to describe the various demands that a nuclear plant places on the ventilation system and describes the types of areas that require ventilation. The paper finally describes how BNFL Engineering Division have designed a new generation of reprocessing plants for Sellafield that have low air throughputs.
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