Progress in the development of metallic fuel in fast reactors
1988
Renewed interest has developed in metallic fuel for fast reactors as a result of Argonne National Laboratory's integral fast reactor (IFR) concept. This concept involves a novel approach to fuel-cycle closure that is based on metal reprocessing and injection-casting fabrication. This paper delves into recent developments associated with the performance of metallic fuels. In February of 1985, three full assemblies of advanced metallic fuel were placed in the core of the Experimental Breeder Reactor II (EBR-II). The 61-pin assemblies each contained an identical complement of metallic fuel of three compositions: U-10 Zr, U-8 Pu-10 Zr, and U-19 Pu-10 Zr. The pins were clad with the austenitic D9, had linear power rating of 15 kW/ft, and achieved peak cladding temperatures of 600{degree}C. The burnup achieved to date on these pins is 14 at.% burnup without any failures, and the irradiation continues. These lead assemblies have demonstrated that metallic fuels have the potential of being competitive with any existing fuel type in terms of steady-state performance.
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