Comment by credit_guy

Your post raises an interesting question. Will the US let South Korea use its naval reactors? The US naval reactors use highly enriched uranium, which can be easily converted into bombs. France used to use highly enriched uranium, but their latest nuclear subs use low enriched uranium (LEU). Now, part of what made the US naval reactors so reliable is that they kept the same design over so many decades. If they change to LEU, that probably requires quite a major design change. If they do that, they might as well allow the civilian industry to use that design for non-military purposes.