Carbon Composite Foam for Multi Radionuclide Trap

V. Ganesan; Prasanta Jana
Carbon foam is employed for trapping fission products (137Cs, 134Cs) and nickel foam is employed for trapping activated corrosion products (54Mn, 60Co) from primary sodium system of fast reactor. However, deployment of individual radionuclide traps with associated shielding for each trap in the active building of a reactor demands larger floor space which has substantial financial implication. Hence, it is desirable to reduce the floor space requirement by incorporating multi radionuclide traps in single location. Therefore, it is necessary to search for materials (termed as multi-trap material) capable of trapping fission and activated corrosion product radionuclides of interest simultaneously from primary sodium circuit. In line with this, the present work describes the development of composite foam materials containing carbon and nickel for multi-trap application. This paper describes three different types of carbon composites namely nickel dispersed carbon foam (density 0.09 g. cm-3 and porosity 96%), nickel dispersed carbon coated alumina foam (density 0.03 g. cm-3 and porosity 99%) and carbon coated nickel foam (density 0.28 g. cm-3 and porosity 97%). The synthesis route of these carbon composite foams follow solution combustion route. By varying the reagents and quantities, the foam materials of interest were obtained. Such carbon composite foam materials are suitable for multi-trap applications.
Carbon Composite Foam; Multi Radionuclide Trap; Fission Products; Activated Corrosion Product; Activity Transport; Electron Microscopy
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