Commissariat a L'energie Atomique

Roger Aubert

Jacques Baujat

A cylindrical shell or so-called reactor core basket is fitted with a coaxial and cylindrical bearing ring which is joined to a top flange of the core basket by means of radial struts and rests on an internal annular shoulder of the reactor vessel. Passageways between the bearing ring and the struts accommodate instruments for nondestructive testing of welded joints, the instruments being guided and displaced over the external face of the core basket in order to inspect the internal face of the reactor vessel without any need to remove reactor internals.

Internal structure for a nuclear reactor vessel

A device for coupling a pressure vessel closure cap to an upper structure for supporting the reactor internals comprises a plurality of locking-keys which are guided in translational motion within radially disposed housings and can be moved into outwardly projecting positions by externally-controlled actuating means in order to engage in opposite recesses formed in the internal wall of the closure cap.

Growing community of inventors

Orsay, France

Roger Aubert