You know, it is interesting because I was looking at the site via the news, and the site seems to be on a bluff. I think the damage was could have been caused by the earthquake rather than the tsunami. Either way, the pebble bed system would have eliminated the problem. I think Japan probably uses pebble bed reactors, but I think this is probably an older reactor.
Fox news said this is an older reactor. From what an expert said the earthquake caused the power outage and the tsunami took the generator down. It is now running on BATTERIES!