No you won't. They all fail to safe. If the electrical grid collapses, if the computers crash, if aliuns invade; the control rods will drop, and the fission pile will just sit there for the next few thousand years slowly turning itself into various cobalt isotopes. Even the associated radioactives contaminated storage yards associated with most reactors will be fine for decades or centuries. Even if a reactor did run-away and melt down or blow like Chernobly or Fukisishima, the contamination was much less than the hysteria.
The nuck'ler weapons stockpiles require sophisticated control and arming systems to make them live and dangerous. Without anyone trained in arming and maintaining them, they are pretty much useless.
Look at Bill Nye over here!

