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Low activity criteria for fusion reactor materials are defined and justified. The radioactive behaviour of silicon carbide is studied, when used as structural material for fusion applications, both in first wall and in blanket irradiation conditions. This analysis takes into account short- and long-term issues such as accident safety, maintenance, waste management and possible recycling of the material. A study of the radioactive species produced by SiC is performed. The relative contributions of the alloying constituents and of the impurities are determined. SiC/SiC complies with all proposed criteria, although the long-term dose rate is above the hands-on limit.

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Authors: ROCCO P, JRC Ispra (IT);ZUCCHETTI M, Politecnico di Torino, Dipartimento di Energetica (IT)
Bibliographic Reference: EUR 14805 EN (1992) 77 pp., FS, free of charge
Availability: Available from Joint Research Centre, Publication Department, I-21020 Ispra (Va.) (IT)
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