Part of the problem with Flamanville is notoriously that France hasn't built a new nuclear reactor for 20 years, and a lot of the expertise has been lost; also,

Part of the problem with Flamanville is notoriously that France hasn't built a new nuclear reactor for 20 years, and a lot of the expertise has been lost; also, the ASN's safety regulations have become a lot stricter in that time. So I think overall GP's points apply.