NUCLEAR REACTOR WITH IMPROVED COOLING IN EMERGENCY SITUATION Russian patent published in 2013 - IPC G21C15/18 

FIELD: power engineering.

SUBSTANCE: nuclear reactor comprises a tank (4), where the reactor core is installed, the primary circuit for reactor cooling, a well (6) of the tank, where the tank (4) is installed, a circular channel (16), which surrounds the lower part of the tank (4) in the well (6) of the tank, a liquid reservoir for filling of the tank well, a tight vessel (22) of the reactor, a chamber (26) for collection of steam generated in the upper end of the tank well (6), separated from the tight vessel (22), a circulating pump (40) and a blade pump or a steam piston machine (32) for actuation of the circulating pump (40). At the same time the channel (16) is designed for performance of the function of a heat shielding screen under normal operation and for provision of upstream circulation of the liquid in case of an emergency, and the circulating pump is made as capable of creating forced convection with the help of the collected steam.

EFFECT: increased level of passive emergency protection of a reactor tank against melting through.

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