FUEL ASSEMBLY FOR A BOILING WATER REACTOR

摘要

A fuel assembly for a boiling water reactor which comprises a plurality of first full-length fuel rods (5a) which are arranged in an orthogonal lattice wherein each fuel rod is included in two rows of fuel rods perpendicular to each other, and a number of second fuel rods (5b) arranged in parallel with the first fuel rods and the length of which is considerably smaller than the length of the first fuel rods. The second fuel rods are arranged in the lower part of the fuel assembly in the space which is formed between a number of first fuel rods located adjacent to each other, that is, in a position which does not belong to the orthogonal lattice.