Nuclear crisis Explained in layman's terms
Channel: MsMilkytheclown
Date: 2011-04-11

Plutonium and Zircaloy zirconium in the real world explained DEMONSTRATION
*Note: Single radiation dose of 2,000 millisieverts (200,000 millirems) and above causes serious illness. See also exposure list below.
Half-life of some radioactive elements

[NOTE: Half-life is the time taken for a radioactive substance to decay by half.] * Cesium-134 ~ 2 years * Cesium-137 ~ 30 years * Iodine-131 ~ 8 days * Plutonium-239 ~ 24,200 years * Ruthenium-103 ~ 39 days [Ruthenium is a fission product of uranium-235.] * Ruthenium-106 ~ 374 days * Strontium-90 ~ 28.85 years [Strontium-90 is a product of nuclear fission and is found in large amounts in spent nuclear fuel and in radioactive waste from nuclear reactors.] * Uranium-234 ~ 246,000 years * Uranium-235 ~ 703.8 million years * Uranium-238 ~ 4.468 billion years


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http://www.fairewinds.com/
The Battle of Chernobyl is a 1.5 hour documentary that is a "must see" in my opinion... here is the link:
http://topdocumentaryfilms.com/the-battle-of-chernobyl/

inadvertent criticality,