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US 6,088,420 AGranted
Reactor core
AssigneeKabushiki Kaisha Toshiba
InventorsTsugio Yokoyama, Ritsuo Yoshioka, Yasushi Tsuboi
Life of this patent
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Abstract
In a reactor core, there is charged a number of fuel assemblies composed of a channel box and a fuel bundle disposed therein, in which fuel rods adjacent to each other are arranged so as to provide a triangular shape and a ratio of a coolant channel cross section to a fuel cross section is set to be 1 or less.
Claims14
A reactor core comprising:
- a plurality of fuel assemblies;
- and
- a plurality of control elements disposed between said fuel assemblies and having blades defining gaps between said fuel assemblies, wherein:
- the reactor core has a ratio of a coolant channel cross section to a fuel cross section of 1 or less, and
- each of said fuel assemblies comprises:
- a channel box having at least one outer protrusion located in one of said gaps between blades of adjacent control elements;
- wherein the at least one outer protrusion interior is formed as a hollow structure, and
- a fuel bundle of fuel rods, said fuel bundle having a substantially rectangular cross section.
5 more elements
Dependencies are inferred from the claim text.