The Alvin W. Vogtle Electric Generating Plant in Waynesboro, Ga., May 6, 2025. The Nuclear Regulatory Commission on Wednesday, July 1, 2026, proposed overhauling its safety rules for radiation exposure from nuclear power plants, saying that the current regulations are too costly and go beyond what is needed to protect human health. (Audra Melton/The New York Times) By BRAD PLUMER The Nuclear Regulatory Commission last week proposed overhauling its safety rules for radiation exposure from…