Momentary support device of the upper internal equipment on a tank of a nuclear pressurized water reactor

摘要

Momentary support device (20) of the upper internal equipment (4) on a tank (1) of a pressurized water nuclear reactor during a core loading or unloading operation (2) after the removal of a cover (1a ) closure of the tub (1), said tub (1) comprising in its upper part a flange (1b) for fixing the lid (1a) and containing fuel assemblies that form the core (2), characterized in that It comprises at least two assemblies (21) each comprising a frame (22) formed by a central part (23) for centering and positioning on the tub flange (1b) and by two lateral arms (25), which are extend on either side of the central part (23), each lateral arm (25) comprising, at its free end (25a), a centering cleat (30) on the inner edge of the tub (1) and support of the upper internal equipment (4) above its fixing position on the lower internal equipment (3).