Device for cutting up a component of a nuclear reactor

Device for cutting up a component (3) of a nuclear reactor which has a wall of tubular overall shape and is arranged with its axis vertical in a part of the structure (1) of the nuclear reactor which is being dismantled, characterised in that it comprises:

• a support (9) provided with means (12) for its demountable fastening to the reactor structure (1) above and vertically in line with the component (3),
• a turret (10) arranged vertically, resting on the support (9) by means of its upper part and mounted rotatably on the support (9) about its vertical axis (14),
• a device for taking up forces (11), on which the lower end of the turret (10) is mounted rotatably,
• an arm (18) mounted movably on the turret (10) in a radial direction,
• a first cutting unit (20) comprising a circular saw arranged horizontally and mounted on the movable arm (18),
• a trolley (25) mounted movably on the turret in the vertical direction,
• a second cutting unit (26) comprising a circular saw (27) arranged vertically and mounted on the trolley (25) and a means for handling (30) fragments of the component (3) which are obtained by cutting up the wall, comprising a hoist (30) fastened to the turret (10) and having a lifting cable (32) at the end of which is suspended a means for grasping (33) fragments of the component (3).