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Comment by craigching | Hacker News Reader

  > causing the third most severe accident in an NPP ever.

I thought this was the second most severe nuclear power plant accident. Obviously Chernobyl is the first, so what is the second according to this article?

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Hmm. According to the International Nuclear Event Scale, there have only been 2 events at the most severe level (7): Chernobyl and Fukushima. There was 1 event at a rating of 6, which was a Soviet explosion in 1957. There was also the Three Mile Island accident, which cost a lot of money to clean up (~$1 billion) but I don't think the severity was anywhere near Fukushima.

https://en.wikipedia.org/wiki/International_Nuclear_Event_Sc...

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