CORE CONFIGURATION FOR NUCLEAR REACTOR

摘要

PROBLEM TO BE SOLVED: To configure a reactor core with fuel bundles and control rods. SOLUTION: In an embodiment of the present invention, the core of a nuclear reactor includes a plurality of fuel cells and a plurality of large control rods. Each large control rod is about two times the width of a conventional control rod and includes four control rod blades extending radially from a central portion and arranged at right angles to each other. The blades define four fuel bundle-receiving channels. The core is configured so that the control rods are arranged in a plurality of staggered rows with four fuel bundles in each receiving channel.