It's mentioned only briefly in this WSJ article, but the problem for this coming winter (and perhaps some years to come) is unexpected stress corrosion cracking

It's mentioned only briefly in this WSJ article, but the problem for this coming winter (and perhaps some years to come) is unexpected stress corrosion cracking recently discovered in multiple French reactors. The affected reactors are the newest currently-operating models, the N4 series [1]. Here's are a few longer articles about the problem: "Counting the cost of cracking" https://neimagazine.com/features/featurecounting-the-cost-of-cracking-9919744/ https://neimagazine.com/features/featurecounting-the-cost-of... "Corrosion Problem Shutters Half of France’s Nuclear Reactors" https://www.theenergymix.com/2022/06/29/corrosion-problem-shutters-half-of-frances-nuclear-reactors/ https://www.theenergymix.com/2022/06/29/corrosion-problem-sh... "Regulator approves EDF's plan for checking corrosion issues" https://www.world-nuclear-news.org/Articles/Regulator-approves-EDF-s-plan-for-checking-corrosi https://www.world-nuclear-news.org/Articles/Regulator-approv... [1] https://www.neimagazine.com/features/featurefeedback-on-the-n4-series/ https://www.neimagazine.com/features/featurefeedback-on-the-...