If the Fukushima+nuclear+disaster wasn't a worst case scenario, its very close to one.
https://www.pbs.org/wgbh/frontline/documentary/japans-nuclear-meltdown/
https://www.tepco.co.jp/en/nu/fukushima-np/review/review1_1-e.html
https://thedigitallabyrinth.blogspot.com/search?q=Fukushima+nuclear+disaster