СИСТЕМА ЛОКАЛИЗАЦИИ И ОХЛАЖДЕНИЯ КОРИУМА АВАРИЙНОГО ЯДЕРНОГО РЕАКТОРА ВОДО-ВОДЯНОГО ТИПА

摘要

FIELD: systems for localization and cooling of melted body at emergency its exit for the limits of the reactor's body. ^ SUBSTANCE: cooling trap is located in the mine under the reactor and fulfilled in the form of a vessel with installed in it a basket with sacrificial materials-diluters of uranium containing and steel components of corium. The bottom of the cooling drum is no less than on 30% thicker of its walls and has an incline to the center in the limits of 10-20 degrees; sacrificial materials-diluters are formed in the shape of briquettes enclosed in the steel drum. The mass of the material-diluters of oxide uranium containing and steel components of corium are determined with the help of calculated ratio computations which take into considerations: the mass of components of the corium, incoming from the reactor; physical parameters of components of melt; density of critical thermal flow drawing off the melts to cooling water through the drum. It is proposed to fulfill the directing arrangement for the body in the form of a funnel located between the bottom of the reactor and the higher edge of the trap. At that the walls of the directing arrangement are covered with heat-resistant concrete, over which a covering of easily melted concrete is put on. ^ EFFECT: the invention allows to increase efficiency and reliability of the system by way of improving conditions for coming in and cooling of melted corium in the trap. ^ 4 cl, 1 dwg