METHOD FOR REPAIR OF INSIDE REACTOR PRESSURE VESSEL, AND REPAIRING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a method for repair of a inside of reactor pressure vessel, and a repairing device permitting repairing work at an annulus part of the reactor pressure vessel to be easily conducted in a short time. SOLUTION: Recirculation piping 72 connected to a recirculation nozzle 2 of the reactor pressure vessel 1 is cut to form an opening part 3, a repairing device is carried into the annulus part 10 of the reactor pressure vessel 1 from this opening part 3, and repair to the inside of annulus part 10 is conducted.