Abstract
Nuclear analysis was performed for a solid wall blanket concept that uses the nano-composited ferritic (NCF) steel alloy 12YWT as structural material with Pb as the neutron multiplier and Flibe (Li/sub 2/BeF/sub 4/) as the tritium breeder and coolant. With an enrichment of 40% /sup 6/Li the overall tritium breeding ratio is expected to be /spl sim/1.16 and the blanket energy multiplication is 1.13. The peak structure dpa and helium production rates are 77.6 dpa/FPY and 955 He appm/FPY, respectively, implying a lifetime of /spl sim/3 FPY. The NCF structure dominates the total activity and decay heat. The Mo content in the NCF needs to be reduced from 0.02% to <0.01% for the structure waste to qualify as low level class C waste.
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