It would honestly take several people .. at least 6, but probably well over a dozen. There's so much built into modern reactors to prevent another Three Mile Island. Even Fukushima shouldn't happen at most US plants. I know a few where the diesel backup generators are setup to work fully submerged in floodwater. Even if the intake/exhaust gets blocked, the cooling ponds are designed to be gravity fed.
If a nuclear plant goes, we're not getting another one, so power companies do not fuck around with that shit.
@djsumdog @Forestofenchantment @Hyperhidrosis But this is assuming that nuclear radiation is harmful to began with, which is doubtful.
https://inv.nadeko.net/watch?v=rMqHTbXm3rs&t=0