Thanks for the link. Would be nice if TerraPower gave a bit more details, their "Facts Sheet" is a bit like on them.
Will it consume spent nuclear fuel (that is something proposed for molten chloride reactors in the past). Will it consume uranium, thorium, or both. They talk about batch refueling. Will it be a partial or full refueling. It it is a partial refueling, you might get away with new fuel at standard levels of enrichment (3% to 5%). If they have to enrich it all the way to what a fast reactor need (well over 10%) that would be a regulatory nightmare.