HYDROGEN ISOTOPES MOBILITY AND TRAPPING IN V-CR-TI ALLOYS

In the last years the V-Ti-Cr alloys were considered as candidate mate rials for different structures of Fusion Reactors (blanket, first wall , divertor and so on) due to their advantages over other structure mat erials. Mobility and trapping parameters of hydrogen are essential cha racteristics for an assessment of using the V-Ti-Cr alloys in FR. In t his paper: hydrogen problems for V-Ti-Cr alloys are formulated; V-H sy stem data base is analyzed; study results of the hydrogen mobility and trapping in V-4Ti-4Cr and V-10Ti-5Cr alloys are given; the classifica tion of V-alloys as radioactive waste according to the Russian Federat ion waste management rules is developed taking into account the residu al amount of tritium ('inventory').