Head-End Separation of Triso-Coated Fissile and Fertile Particles for High-Temperature Gas-Cooled Reactors

Recycle fuel for HTGRs uses TRISO -coated particles containing two fissile materials, ²³³U and ²³⁵U. The economics of the fuel cycle makes separation of these materials before reprocessing desirable. Laboratory scale head-end studies have demonstrated that the silicon-carbide layer has adequate integrity after irradiation to permit separation of the two types of fissile material by size.