METHOD TO SHIELD NUCLEAR FUEL ASSEMBLY WITH REMOVABLE DEBRIS SHIELD IN UPPER TIE PLATE
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United States of America Patent
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app pub date -
Sep 30, 2008
filing date -
Aug 31, 2007
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Abstract
A method to prevent debris falling into a nuclear reactor fuel assembly including a bundle of fuel rods mounted below an upper tie plate and housed in a channel including: inserting a debris shield in the upper tie plate; maintaining the shield in the upper tie plate and above the fuel rods, while the fuel assembly is in an operating nuclear reactor core; flowing coolant through the bundle and the debris shield during operation of the nuclear reactor core, and capturing or deflecting debris falling in the fuel assembly with the debris shield.
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