Monday, July 23, 2018

PU-239 or nuclear weapons grade plutonium


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One of the three reactors at Fukushima that melted down was reprocessing weapons grade Plutonium or PU-239 which has a half life of 25,000 years which is a much greater half life than non-weapons grade nuclear material normally used in nuclear power plants. Where this came from I have no idea. It is possible that the U.S. gave this to Japan to reprocess at some point.
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Weapons-grade plutonium is defined as being predominantly Pu-239, typically about 93% Pu-239. ... To reduce the concentration of Pu-240 in the plutonium produced,weapons program plutonium production reactors (e.g. B Reactor) irradiate the uranium for a far shorter time than is normal for a nuclear power reactor.

Weapons-grade nuclear material - Wikipedia

https://en.wikipedia.org/wiki/Weapons-grade_nuclear_material

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Weapons-grade nuclear material - Wikipedia

https://en.wikipedia.org/wiki/Weapons-grade_nuclear_material
Jump to Weapons-grade plutonium - Weapons-grade plutonium is defined as being predominantly Pu-239, typically about 93% Pu-239. ... To reduce the concentration of Pu-240 in the plutonium produced,weapons program plutonium production reactors (e.g. B Reactor) irradiate the uranium for a far shorter time than is normal for a nuclear power reactor.
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