Partial grid for a nuclear reactor fuel assembly
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United States of America Patent
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-
Mar 18, 1986
Grant Date -
N/A
app pub date -
Dec 21, 1983
filing date -
Dec 21, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A partial grid structure is provided for a nuclear reactor fuel assembly for selectively mounting either means for deflecting the upwardly flowing coolant or means for laterally supporting the fuel rods, or both, to substantially eliminate localized neutron flux peaking and thereby increasing the power output of the assembly. The grid structure extends across only a portion of the fuel assembly and is associated with a selective group of fuel rods defined by a predetermined number of the fuel rods contained within the fuel assembly. The grid straps form an egg-crate configuration creating cell openings for receiving the fuel rods of a predetermined fuel rod group. In an alternate embodiment, the fuel rods of the fuel assembly are partitioned into separate groups by the use of separate partial grid structures which are combined to form a grid structure assembly.
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