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(ITERP/24) ITER-FEAT Divertor Remote Maintenance

D. Maisonnier1), G. Cerdan2), S. Chiocchio3), C. Damiani4), J.-P. Friconneau2), R. Haange5), M. Irving4), E. Martin3), J. Palmer1), A. Poggianti6), M. Siuko7), E. Tada8), N. Takeda8), A. Tesini5), R. Tivey3), A. Turner9)
1) EFDA, Boltzmannstrasse 2, 85748 Garching, Germany
2) CEA, DTA/DPSA/STR, BP6, 92265 Fontenay aux Roses Cedex, France
3) ITER Joint Work Site, Boltzmannstr. 2, 85748 Garching, Germany
4) ENEA, CR Brasimone, CP 1, I-40032 Camugnano (Bo), Italy
5) ITER Joint Work Site, Naka, Naka-machi, Ibaraki-ken, 311-01 Japan
6) ENEA, via Martiri di Montesole 4, 40129 Bologna, ITALY
7) IHA, Korkeakoulunkatu 2, Box 589, FIN-33101 Tampere, Finland
8) JAERI, 2-4 Shirane, Shirakata, Tokai-mura, Naka-Gun, Ibaraki 319-11 Japan
9) NNC Limited, Booths Hall, Chelford Road, Knutsford, Cheshire, WA16 8QZ, England

Abstract.  Remote replacement of the ITER divertor will be required several times during the life of the machine. To facilitate its regular exchange the divertor is assembled in the vacuum vessel in 54 cassettes, each being introduced into the vessel through one of three equispaced handling ports. The remote replacement of plasma facing components in the hot-cell allows the cassette bodies to be re-used and to minimise the amount of activated waste. An R&D project was conceived during the ITER EDA to demonstrate the feasibility of divertor remote maintenance operations. Two test platforms have been set up and are being used to evaluate equipment and procedures. Following a short description of the test facilities set up at ENEA Brasimone, Italy, this paper reports the test results which confirm the overall feasibility of the proposed maintenance and refurbishment schemes.

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IAEA 2001