Nuclear fuel and method of making compacts with precise...

Details Nuclear fuel and method of making compacts with precise... Nuclear fuel and method of making compacts with precise...

G - Physics

21

C

31/85

G21C 3/62 (2006.01)

Patent

CA 1333958

Methods for making nuclear fuel compacts containing precise amounts of nuclear fuel material which exhibit low heavy metal contamination and fewer defective coatings following compact fabrication using a hardenable binder including petroleum pitch or the like. Nuclear fuel particles having a multiple layer fission-product- retentive barrier, with a dense outer layer thereof being surrounded by a protective overcoating, e.g., pyrocarbon having a density between about 1 and 1.2 g/cm3, that is encapsulated within a thin shell of pyrocarbon from about 1.7 to about 2 g/cm3 in density, can be precisely metered to create charges containing very precise amounts of nuclear fuel material that can be pre-compacted in molds under relatively high pressures and then combined with the fluid binder which is ultimately carbonized to produce carbonaceous compacts containing very precise nuclear fuel loadings.

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