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Non-Tech : Alternative energy
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To: Fishfinder who wrote (4384)3/4/2008 10:40:45 AM
From: Chad Krogh  Read Replies (2) of 16955
 
Wikipedia sez:

A pebble bed power plant combines a gas-cooled core[6] and a novel packaging of the fuel that dramatically reduces complexity while improving safety.[7].

The uranium, thorium or plutonium nuclear fuels are in the form of a ceramic (usually oxides or carbides) contained within spherical pebbles made of pyrolytic graphite, which acts as the primary neutron moderator. Each sphere is effectively a complete "mini-reactor", containing all of the parts that would normally be separate components of a conventional reactor. Simply piling enough of the fuel spheres together will eventually reach criticality.
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