Uranium enrichment is getting underway this week at a facility in southern Ohio, a federally authorized demonstration project considered critical to produce the type of fuel needed for newer, more efficient nuclear reactors.
Bethesda, Maryland-based Centrus Energy Corp. will be producing the high-assay, low-enriched uranium at the American Centrifuge Plant in Piketon, about 68 miles (109 kilometers) south of Columbus. That form of uranium contains far more of the isotope U-235 than is typically found in current nuclear reactor fuel.
why not just use existing thorium salt tech?
Because 1) Thorium hasn't been demonstrated in any effective way, 2) the vast majority of advanced reactor designs rely on U-235 for their neutronics, 3) thorium produces U-233 which is always contaminated with U-232 and is hot as hell and hard to work with, 4) we haven't licensed a thorium cycle design and that's wildly expensive, and makes no economic sense when we can separate U economically… Should I go on? Thorium is really only of interest for countries without U deposits and/or access to U.