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A study has been performed to analyse and compare the costs, occupational and public radiation doses and the benefits associated with alternative routes for the management of fusion reactor structural wastes. These routes comprise permanent disposal and recycling after a period of storage. The two alternative waste management routes are defined and the plant and equipment requirements for initial processing, storage, packaging, transport , disposal, remelting, conversion and fabrication, and reassembly are set out. Costings take account of the capital costs of plant, equipment and raw materials, as well as operating, maintenance and labour costs. Occupational radiation exposures are calculated for normal operation and maintenance tasks from estimates of manning levels and area dose rates. Doses to members of the public are calculated for exposure to direct radiation, airborne releases and liquid effluent releases, and the risks from post-disposal intrusion are estimated. The slightly lower costs, occupational doses and short term public doses associated with the direct disposal of steels, suggest that this may be the preferred waste management route, but other factors could make recycling more favourable. These include an increase in the future costs of steels, the potential for lower impurity levels in low activation steels, improvements in steel remelting technology, the public attitude to radioactive waste disposal and a perceived material resource problem in the future.

Additional information

Authors: PLEWS M J, Electrowatt Engineering Services (UK) Ltd., Horsham West (GB);DAVIES A R, Electrowatt Engineering Services (UK) Ltd., Horsham West (GB);BUTTERWORTH G J, UKAEA Culham Laboratory, Abingdon, Oxon. (GB)
Bibliographic Reference: Report: CLM-R296 EN (1989) 133 pp.
Availability: Available from the Librarian, UKAEA, Culham Laboratory, Abingdon, Oxon. OX14 3DB (GB)
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