Probability Of Contamination From Nuke Accident Higher Than Expected

According to this study.  But I don't like the study.  It relies on Chernobyl and Fukushima.  But they count Fukushima as 3 meltdowns, even though they have the same causal and temporal circumstances.  It's possible that the future might show more instances of multiple reactor failures as a result of the same circumstances, but with a single event, that's some poor data quality.