Spherical fuel element and production thereof for gas-cooled high temperature pebble bed nuclear reactors (HTR)
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United States of America Patent
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Aug 14, 2012
Grant Date -
Jan 21, 2010
app pub date -
Aug 28, 2007
filing date -
Aug 29, 2006
priority date (Note) -
Expired
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Abstract
The invention relates to a novel design and production of fuel element pebbles which satisfy the requirements of high temperature pebble bed nuclear reactors of the next generation. The invention uses a shell of the fuel element pebbles that is devoid of fuel and consists of silicon carbide (SiC) and/or zircon carbide (ZrC), in addition to natural graphite and graphitized petroleum coke, said shell having a maximum average nominal thickness of 5 mm and preferably only 3 mm.
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