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EXPERIMENTAL TRANSMUTATION OF NEPTUNIUM IN THE BOR-60 REACTOR IN THE FORM OF VIBROPAC UNPO 2 FUEL

The main characteristics of granulated fuel (U–5%Np)O2 produced by pyroelectrochemical reprocessing procedure and fuel pins fabricated by vibropacking technology were investigated. The fuel pins were under irradiation in BOR-60 up to the burn-ups of 13 and 20% h.a. Integrated postirradiation examinations showed high serviceability of development pin design, a good compatibility between ChS-68 cladding and (U,Np)O2 fuel, structural fuel stability and distributions of the main FPs in the irradiated fuel, which were typical of the oxide hypostoichiometric fuel. The report presents the basic results of the investigations carried out.