since we're talking about france, it's important to mention that frances nuclear infrastructure is a mess right now, pretty much all of it is EOL and a handful have found serious structural issues. Maintenance is important kids, remember to perform it, otherwise your PWR main loop might explode. and everyone will laugh at you.

Also the EPR reactor being built thats like n times over budget and x years behind commission, 90% of it is fabrication skill issues though. The EPR is also just immensely complex compared to better designs.

infrastructure is a universal issue though, you just HAVE to maintain things unless you want them to disintegrate. And you need to have a plan in place to keep things going into the future, when things inevitably reach EOL.