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A study was undertaken to identify a maintenance scheme which would lead to an acceptable level of availability for a future commercial fusion power station. A particular scheme was identified which could lead to a plant availability of the order of 80 %. In this scheme the divertor modules are serviced through dedicated maintenance ports provided in each sector of the torus, and the blanket is sub-divided in both the radial and poloidal directions to allow it to be handled through two radial access ports. These principles have been developed sufficiently to allow the main potential hazards to be identified. The impact of the scheme on the plant layout is also assessed.

Additional information

Authors: SHERWOOD D V, NNC Ltd., Risley, Cheshire (GB);PEARCEY J, NNC Ltd., Risley, Cheshire (GB);THOMPSON H M, NNC Ltd., Risley, Cheshire (GB);SUBLET J-C, AEA Fusion, Culham Laboratory, Abingdon, Oxon. (GB);TAYLOR N P, AEA Fusion, Culham Laboratory, Abingdon, Oxon. (GB)
Bibliographic Reference: Report: UKAEA FUS 277 EN (1994) 21 pp.
Availability: Available from the Librarian, UKAEA, Culham Laboratory, Abingdon, Oxon. OX14 3DB (GB)
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