Yes. But I wish to point out that the Fukishima disaster happened because one failure caused a cascading sequence of failures that destroyed the plant.

The design failure was "assume the seawall would not be breached". But it was, which destroyed the backup electric generators, and the rest followed from that.

A better design would assume the seawall is overtopped, and so would have put the generators on a platform. Simple, cheap, and effective.