SOURCE-TERM AND MOBILIZATION ASSESSMENT IN NSSR-1 OF ITER

We describe the radioactive sources in the International Thermonuclear Experimental Reactor (ITER). The most important sources are co-deposi ted tritium, tritiated water, tokamak dust, and corrosion products. Th e co-deposited tritium is limited to 1 kg-T; the total on-site tritium inventory in the Basic Performance Phase (BPP) is 4 kg-T. Tritiated w ater concentrations are kept below 0.2 g-T/m(3) in the divertor; other coolant loops have lower tritium concentrations. The in-vessel dust i nventory is up to 100 kg-W, 100 kg-Be, and 200 kg-C. The activated cor rosion product inventory is kept below 10 kg per loop.