A couple thoughts. The problem with the nukes is not that they couldn't survive a 9.0... they did.
What is taking them out is the tsunami disabled the redundant pumping systems . That is a correctable problem.
Anyway ,I think the move to use nukes as a viable alternative to carbon based is pretty much a dead idea. Too bad.. We needed a bridge to these future technologies. What will be conveniently ignored is that reactors will continue to be used all over the developed world for other purposes. Reactors all over the world provide over 10,000 hospitals with the necessary radioisotopes for diagnostic and medical treatment . Would we shut them down too ?