Chernobyl - damage to confinement structure

The arch-shaped New Safe Confinement structure built over the remains of

Chernobyl’s destroyed unit 4 suffered such extensive damage in a drone
strike in February that it may not be possible to restore it to its full
original design purposes and life-span of 100 years, a side event at the
International Atomic Energy Agency General Conference heard.

 World Nuclear News 18th Sept 2025

 https://www.world-nuclear-news.org/articles/chernobyls-giant-shelter-may-never-return-to-original-state