Installation for handling assemblies forming the core of a fast neutron nuclear reactor

An installation for handling assemblies forming a core of a fast neutron nuclear reactor, between a primary station situated in a main vessel containing the core and a secondary station situated in an adjoining vessel, said installation comprising:

• at least one pivotable transfer hood, means for pivoting the hood around a vertical axis, two inclined ramps for connecting the hood to the primary station and the secondary station respectively, at least one pot for transporting an assembly, means for lifting said at least one pot along guiding means inside each of the ramps and the pivotable hood between the primary station and the secondary station, and means for closing the ramps at their top ends when the reactor is operating, comprising two flaps, the hood being attached to a rotary horizontal platform such that the hood and platform rotate as a unit around said vertical axis, said flaps being mounted on the platform in locations such that the flaps can be simultaneously placed above the top ends of the ramps by said means for pivoting the hood when the reactor is operating, said at least one pot comprising two pairs of wheels cooperating with the guiding means.