User blog comment:Phoenixlight13/Japan Earthquake/@comment-1925947-20110315174837/@comment-3480057-20110316002117

The radiation levels were 400 sieverts( Metric derived unit for radiation) Radiation poisoning starts at 1000 sieverts 3000-5000 sieverts and your dead Note that radiation doesn't accumulate, but still not a good idea to be exposed in the first place.