I am more and more convinced that if the lights go out, NO MATTER HOW WELL PREPARED YOU ARE, you are dead within six months or so.
The reason?
We have how many, maybe over 100 Fukushimas right here in our own back yard.
If the fallout does not kill animals that spend all of their time around Chernobyl eating the things that grow there like wolves are not killed I am pretty sure that humans will do fine.
The area around Chernobyl is now basically a thriving wild life sanctuary. It is possible to get hunting permits and guided tours for the area.
The NRC is starting to notice EMP issues. I think we can harden fairly easily against likely EMP and I suspect we will be required to do so soon. Some of our buildings have full steel liners and our concrete has more rebar in it than you can shake a stick at. I am more concerned about meter and relaying and control cabinets. Though we can run things manually.