I won't try to summarize here, but long story short, the conditions which led to the Fukushima disaster were well known and TEPCO was warned as early as 2000, b

I won't try to summarize here, but long story short, the conditions which led to the Fukushima disaster were well known and TEPCO was warned as early as 2000, but they did nothing to prevent it. There a number of good sources on the Wikipedia page (https://en.wikipedia.org/wiki/Fukushima_nuclear_accident#Prior_warning https://en.wikipedia.org/wiki/Fukushima_nuclear_accident#Pri...).