Abstract
An overview of the preparation and implementation of the JET 2nd deuterium-tritium experiment (DTE2) safety case is presented. The safety case regime, developed by UKAEA for fusion applications to demonstrate compliance with relevant regulations, and its implementation on UKAEA sites is outlined. The hazard assessment process and details of the methodology applied to assess key JET fault scenarios are provided. An outline of key inventories, their composition, and applied factors for consequence and risk assessment are discussed. The consequences resulting from key fault sequences, the designation of appropriate safety measures and the associated risks are summarised and compared against basic safety limits and objectives. Finally, some of the lessons learned from DTE2 following implementation are discussed.
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