Spacer grid for nuclear fuel assembly for reducing high frequency vibration
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United States of America Patent
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Nov 24, 2015
Grant Date -
Feb 6, 2014
app pub date -
Oct 10, 2012
filing date -
Aug 6, 2012
priority date (Note) -
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Abstract
Disclosed herein is a spacer grid for a nuclear fuel assembly which is formed from grid strips of an improved structure, thus reducing flow-induced high-frequency vibration. The spacer grid has dimples or grid springs for supporting fuel rods and is formed from a plurality of grid strips assembled in a lattice shape to form lattice cells. Each of the grid strips has at least one slot formed in a planar portion of the grid strip separately from the dimple or grid spring. Therefore, characteristics of the vibration of the spacer grid can be set in a variety of different manners so that flow-induced high-frequency vibration can be reduced.
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