Water nuclear reactor equipped with a receptacle containing deformable inner structures

摘要

In a water reactor, a receptacle (20) is placed underneath the core (12), inside vessel (10) such as to collect the corium formed in the event of accidental fusion of the core (12). To absorb the shock wave produced by a possible vapour explosion, deformable, generally metallic, inner structures (38) are placed inside receptacle (20). Containers (48), for example spherical-shaped, containing a material able to cool the corium, such as silica, may also be placed inside receptacle (20).