Basically, if they lose cooling, they've got about one hour. then it very much is like Chernobyl - Core meltdown, containment failure, very ugly.
No, as that reactor is of a different type.
When Chernobyl went out of control, the reaction accelarated making it into something like a little nuke.
A meltdown in that japanese reactor would "only" leave behind a molten pile of radioactive debris.
So yes Three_Mile_Island again seems more plausible.
