UNDERWATER CUTTING DEVICE AND UNDERWATER CUTTING METHOD OF NUCLEAR REACTOR APPARATUS

To provide an underwater cutting device and an underwater cutting method of a nuclear reactor apparatus capable of easily moving a band saw into water or onto water.SOLUTION: An underwater cutting device 10 of a nuclear reactor apparatus of the present invention includes: a traveling rail 16 attached to a periphery of a pool 12 adjacent to a nuclear reactor of a nuclear power plant; a traveling frame 20 that is arranged on the traveling rail 16 so as to cross the pool 12 and travels on the pool 12; a rotary table 50 that is mounted in the pool 12 and on whose upper surface a nuclear reactor apparatus 11 is mounted and rotated; and a band saw 60 for cutting, with a saw blade, the nuclear reactor apparatus 11 that is mounted on the rotary table 50 in the pool 12 that is mounted so as to be movable up and down in a water depth direction of the pool 12 from the traveling frame 20 and filled with water.SELECTED DRAWING: Figure 1 【課題】バンドソーを水中又は水上間で容易に移動できる原子炉機器の水中切断装置及び水中切断方法を提供する。【解決手段】本発明の原子炉機器の水中切断装置１０は、原子力発電所の原子炉に隣接するプール１２の周辺に取り付けた走行レール１６と、前記プール１２を跨ぐように前記走行レール１６上に配置して前記プール１２上を走行する走行架台２０と、前記プール１２内に取り付けて上面に原子炉機器１１を載置して回転させる回転テーブル５０と、前記走行架台２０から前記プール１２の水深方向に昇降移動可能に取り付けて水を張った前記プール１２内の前記回転テーブル５０上に配置した前記原子炉機器１１を鋸刃で切断するバンドソー６０と、を備えたことを特徴としている。【選択図】図１