Patent Number: 6,434,210

Title: Fuel assembly

Abstract: A fuel assembly attains high burnup and increases reactor shut-down margin when loaded into a reactor core wherein a water gap width on a control rod side and a water gap width on a side opposite to the control rod side are almost equal to each other. The fuel assembly has a plurality of fuel rods arranged in a square lattice pattern, each fuel rod being filled with nuclear fuel pellets and also has at least one neutron moderator rod shifted toward one corner where a control rod is inserted, away from a cross sectional center of the fuel assembly.

Inventors: Masumi; Ryoji (Ibaraki, JP)

Assignee: Hitachi, Ltd.

International Classification: G21C 3/32 (20060101); G21C 003/00 ()

Expiration Date: 08/13/2019