the operating reactors automatically shut down, but there were problems in the cooling systems. in one of the cooling systems, number one, there was a problem. and in number three, another problem. so because these reactors failed, they went into what was called partial meltdown. not enough electricity to continue to run the cooling system. so scientists and technicians have begun to try to control by dumping the sea water. this is the sea water in this area into it. the concern, of course, is radiation from the plants, as well. the government said there's absolutely no possibility of a trenobel type accident. this is where an explosion took place, blowing the roof off one of those reactors in the nuclear plant. again, these are hydrogen explosions taking place, not