JET-P(89)21
Management of Operational Active Wastes on JET
During Tokamak operationson JET, activation of the first wall components will occur. Subsequent intervention and maintenance work on the machine will result in the generation of same active wastes. Activity levels of first wall components and in the vacuum vessel are low during D-D operations and all maintenance and associated waste handling tasks can be carried out using hands ontechniques. Activation resulting from the production of 14MeV neutrons during tritium pulses in the D-T phase will necessitate the use of remote handling equipment for maintenance and waste handling. In addition to the constraints imposed by activation products and tritium, waste management will be affected by the presence of beryllium to be used as a first wall material from 1989. Studies have been carried out to estimate the volumes and characteristics of the wastes generated in both the D-D and D-T phases. The disposal options for the differing waste streams have also been investigated. The conceptual design of facilities for active handling and waste management tasks, required for the support of torus maintenance and intervention work, has been completed and the detail design is scheduled for ccmpletion in April 1989. These facilities, which include areas for decontamination of tools and equipment, equipment maintenance and storage, will be operational before the start of the DT phase.