CONTROL ROD DRIVE MECHANISM THERMAL SLEEVE KEY WITHDRAWAL JIG

摘要

PROBLEM TO BE SOLVED: To provide a jig capable of surely withdrawing a thermal sleeve key engaged tightly, using small force. SOLUTION: A male screw of guide bolt is screwed in a female screw, provided in the housing flange of a control rod drive mechanism. The thermal sleeve key installed in the thermal sleeve of the housing is pinched with a clamp, and the guide rod is pressed with a piston so as to withdraw it.