The good safety of nuclear in developed countries goes hand in hand with its costly regulatory environment, the risk for catastrophic breakdown of nuclear facilities is managed not by technically proficient design but by oversight and rules, which are expensive yes , but they also need to be because the people running the plant are it’s weakest link in terms of safety.
Unless you are in Britain, where they manage to have a costly regulatory environment and poor safety outcomes because THE PEOPLE TASKED WITH KEEPING US SAFE JUST STRAIGHT UP FALSIFY RECORDS.