The U.S. Nuclear Regulatory Commission (NRC) received a petition from San Luis Obispo Mothers for Peace, Friends of the Earth, and Environmental Working Group requesting the immediate closure of the Diablo Canyon Nuclear Power Plant due to earthquake risks. This request was made on March 4, 2024, with supplements added on June 7 and October 30, 2024. The petition has been referred to the NRC's enforcement petition process. The NRC's Petition Review Board is reviewing specific concerns, including the reliability of seismic source characterizations and earthquake modeling used by the plant's operator, Pacific Gas & Electric Company.
Simple Explanation
The government got a request to shut down a big electricity plant because it might be dangerous if there's an earthquake, and they are checking if that's true. Some people think it's risky, so special rules are being used to look closer, but there aren't many details about how they decide if it's really that dangerous or how much closing it would cost.