I slept within 500' of 8 nuclear reactors when I was stationed on the USS Enterprise.
I don't need to use a night light in my bedroom.
My at sea watch station was less than 40' from the reactor. Of course on a 637 class boat you can't actually get even 150' away and stay dry.
The off watch bull sessions in the torpedo room might have been less than 20' from any hypothetical "special" weapons we could neither confirm or deny the presence of.