An absorbing rod, an apparatus for inserting a group of absorbing rods in a spent fuel assembly, a cask, and a method of conveying and storing spent fuel assemblies

摘要

Absorbing rods (11) have nearly the same shape as the shape of columnar control rods for PWR used in reactivity control of core in a reactor. The absorbing rods (11) can shield neutrons, and are inserted in control rod guide pipes (5) and measuring pipes (6) in fuel assemblies (1).