It’s probably easier to deal with sea level rise since it’s slow motion. If there’s a Fukushima every year.. wow.

I assumed 3 events in the next 80 years.

There's been 25 years between Chernobyl and Fukushima, and assuming we build new reactor, there is no reason to imagine it would happen more frequently. Why do you think there could be a catastrophe per year ?

The world uses 18 TW of primary energy, which is about 6,000 1GW(e) reactors. This is more than an order of magnitude increase over current nuclear power reactors.

Also, many of those reactors are going to have to be breeders. Accidents in fast breeders are potentially even worse than Chernobyl.