It should be possible to design a nuclear power plant to operate safely after a magnitude 9 earthquake and a tsunami following it, but I would still say in that

It should be possible to design a nuclear power plant to operate safely after a magnitude 9 earthquake and a tsunami following it, but I would still say in that case all bets are off. The problem is that there are certain sorts of disasters where you really can't be sure you have the unknowns down well enough..... That's why aircraft components are rigorously tested. The only really safe solution I can think of is to try to anticipate the problem and sabotage the warhead first. For example one might, say, design warheads to destroy portions of the electronics if they get a signal that the pilot ejected. So yes, it is probably possible. Is it possible to do so reasonably perfectly? I doubt it to be honest.