a partial meltdown means there has been some damage to the nuclear fuel. and, of course, authorities want to prevent more from occurring. a total meltdown means they haven t been able to control it, and the fuel has turned into a molten radioactive mass which may be hard to contain by any means. it also means that any radioactive release from the damaged fuel has been maximized if it is an uncontrolled meltdown. so they want to keep any meltdown partial and not total. given that, how partial a meltdown are we talking about here? what has already happened in japan? what proportion of the nuclear fuel at thsee reactors is damaged so far? the international atomic energy agency today said in vienna the reactor number 2 in daiichi, that they thought there was damage but the iaea was estimating it to be less than 5% of the fuel in the reactor, less than 5%. unfortunately, teppco, the
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