Nuclear fuel rod grid spring and dimple structures having chamfered edges for reduced pressure drop
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United States of America Patent
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May 8, 1990
Grant Date -
N/A
app pub date -
Feb 21, 1989
filing date -
Feb 21, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A nuclear fuel assembly grid includes a multiplicity of dimple and spring structures for engaging fuel rods extending through the cells of the grid. Each of the dimple and spring structures have a pair of outer portions and a middle portion with opposite lengthwise edges thereon. The edges of the middle portions of the dimple structures and the outer and middle portions of the spring structures have one-sided chamfers defined thereon, whereas the edges of the outer portions of the dimple structures have double-sided chamfers defined thereon. The one-sided chamfers are longer than the double-sided chamfers.
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