Comment AP1000 (Score 2) 560
Loss of power is a solved problem. The Westinghouse AP1000 reactor is a current design that is passively cooled, no external power necessary. I'm not sure about the spent fuel pools, but the reactor itself is entirely passively cooled and there are several of them already in existence.
A "traveling wave reactor" sounds like a neat idea, but the summary makes it sound like nobody's ever thought about a loss of external power event. We have to remember that the Fukushima plants were built in the 70's, they are old designs. Newer designs take that into account. The only point I'm trying to make here is that current generation designs have already taken loss of external power into account.