An apparatus for cooling and for protection of a reactor pressure vessel with core melt accidents

The invention relates to a device for cooling and for protection of a reactor pressure vessel with core melt accidents, in which the technical problem to maintain the integrity of the reactor pressure vessel with core melt accidents of water-cooled nuclear reactors, by a device for cooling a reactor pressure vessel (3), with a core support plate (11) which supports a reactor core (4) inside the reactor pressure vessel (3), and below the core support plate with a device for dividing the volume (11) is dissolved in a plurality of partial volumes. DOLLAR A Furthermore, it is the technical problem solved by a device for cooling a reactor pressure vessel (3), with a cooling device, which the reactor pressure vessel (3) at least partially surrounds, with a coolant reservoir with a wall, the outside of the reactor pressure vessel (3) at least surrounding the region of the bottom spherical cap (30) at a predetermined distance and forms a gap, and with at least one container for holding a heat carrier, wherein the container upon reaching a predetermined temperature releases the heat transfer medium in the gap.