Mushroom Cloud at the Fukushima Daiichi reactor!

http://etechmag.com/?p=242

http://www.youtube.com/watch?v=BdbitRlbLDc&feature=player_embedded





The pic shows a mushroom cloud rising above the Fukushima Daiichi reactor .. there is no way either a hydrogen explosion or a meltdown could produce such an effect.





In a nuclear reactor uranium fuel rods that remain stable in correct storage, are put together to make a “nuclear pile” which will increase in temperature exponentially of its own volition, unless cooled or separated.

Sodium is exposed to the pile which becomes a radioactive liquid, that is passed thru pipe nests in heat exchangers to heat 2nd batch non radioactive sodium.

That goes thru second round exchangers that heat water to make steam that drives the Power Station’s turbines, which turn generators to produce electricity.

In a meltdown the flow of coolant delivered to the reactor core is interrupted, which unless the pile is reduced and the system isolated, becomes a run away or uncontrolled process that leads to meltdown, the welds the heat exchangers get over stressed and crack.

Makes a soup of radioactive and non radioactive liquid sodium and high pressure steam, the resultant explosion reduces the reactor to wreckage, and releases a cloud of highly radioactive steam into the atmosphere.