Level 7 = Major accident:
Impact on people and environment:
"Major release of radioactive material with widespread health and environmental effects requiring implementation of planned and extended countermeasures."
This plant now has a 20 KM exclusion zone around it, compared to the only other level 7 accident, Chernobyl with a 30 KM exclusion zone. It should be said that the Chernobyl zone was probably the minimum possible, as the USSR did not exactly hold human life as highly as we do in the PC world today (in industrialized nations that is.) Still, those who keep downplaying this multiple meltdown and partial containment failure are losing credibility by the day.