Edison wants to restart one of San Onofre's nuclear reactors

[FBaggins]

2. Hardly

Let's take a few easy points:

1) The expected sites for "The big one" aren't close to the plant
2) The type of faults along California do not produce tsunami anywhere near the size of what Japan gets (try looking up the worst tsunamis in CA history). Yet SONGS' sea wall and siting are at less risk even if it happened.
3) Fukushima withstood the earthquake with little damage (it was the tsunami that caused the crisis), and SONGS was designed for a significantly larger amount of ground motion than Fukushima was (even though the "big one" would almost certainly be smaller at SONGS).
4) The generators there aren't vulnerable to flooding

And even if all of that went wrong and there was a meltdown?

5) SONGS is a much newer design with even better containment (and associated safety systems)
6) SD/LA are 45-60 miles away.