Nuclear fuel assembly
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United States of America Patent
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-
Jan 3, 1989
Grant Date -
N/A
app pub date -
Apr 27, 1987
filing date -
Apr 29, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A nuclear fuel assembly for a boiling reactor comprises a plurality of fuel rods arranged in four sub-bundles surrounded by a fuel channel of substantially square cross-section. A vertical channel-formed support member for the passage of water, separates the sub-bundles of fuel rods. By arranging each sub-bundle with a reduced corner portion by not locating a fuel rod in that corner of the sub-bundle towards the center of the fuel assembly, the sub-bundles can be located in a separating channel-formed support member with an enlarged central channel. The enlarged central channel makes it possible to contain a larger quantity of non-boiling water in the central part of the fuel assembly, which results in better neutron moderation in the central part of the fuel assembly.
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