I just found this and printed it out to have on hand for whatever and whenever radiation becomes a problem where I'm at. I suggest everyone do the same as well as read it now and see what you have already and what you could easiy purchase now.
Don't forget storing food and water and having a bug-out bag ready to go on short notice if you can't shelter in place. Years ago I bought enough plastic painter's drop clothes and duct tape if I ever have to stay inside and seal up my windows and doors for a few days. Note to Jap69- - Like in the movie The Trigger Effect, ;)
PROTOCOL FOR NUCLEAR CONTAMINATION