Partial grid for a nuclear reactor fuel assembly

Details Partial grid for a nuclear reactor fuel assembly Partial grid for a nuclear reactor fuel assembly

1983-12-21

1986-03-18

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376443, 376438, G21C 334

Patent

active

045767866

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.

REFERENCES:
patent: 3225091 (1966-06-01), Frisch
patent: 3379617 (1968-04-01), Andrews
patent: 3379619 (1968-04-01), Andrews
patent: 3395077 (1968-07-01), Tong
patent: 4061536 (1977-12-01), Creagan
patent: 4155807 (1979-05-01), Schreiber et al.

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