GANG CONTROL ROD CONTROLLER

摘要

PROBLEM TO BE SOLVED: To provide a gang control rod controller which minimizes increase of startup time in a gang control rod controller in which the minimum drive step width of a control rod is increased. SOLUTION: In a gang control rod controller consisting of a gang control rod operation device 1 for determining the selection, insertion and withdrawal of a plurality of control rods to be simultaneously operated by control information and a control rod drive controller 2 for driving the control rods, the gang control rod operation device 1 stores at least two kinds of group separation information including a group separation gradually decreasing in number as grouping of gang control rods simultaneously operated in the range where almost half of total control rods are withdrawn in a checker board pattern without including the central control rod.