It will be interesting to see how well it holds up to prolonged testing. There have been numerous previous attempts at this sort of thing and they have all failed. It turns out to be highly significant because the added cost of preparing, testing, inspecting, and then replacing any damaged parts in contact with the liquid sodium adds up to a considerable expense that challenges the business case for the reactor in the first place. Good that this is being worked on, but bad they seem not to be aware of the serious problems other molten sodium reactors have faced.
From what I’ve read so far (see other links in discussion), the researchers believe that they have likely solved the corrosion issue by removing hydrogen and oxygen from the salt equations.
