The nuclear security agency in France is one of the toughest in the world, and is independent. They notably demand "current" state-of-the art security for all nuclear plants (vs. state-of-the-art at the time of building in the US, typically)

French nuclear plants typically never killed anyone (and will never), unlike German coal plants (which are at least partially responsible for the 22,000 coal-related premature deaths every year)

Nuclear energy is a very emotionally polluted debate (no pun intended), but facts tend to shows that this is the cleanest and safest energy.