SURFACE CONTAINMENT OF NUCLEAR REACTOR USING LIQUID-METAL COOLANT Russian patent published in 2002 - IPC

FIELD: nuclear reactors. SUBSTANCE: surface containment has stationary section mounted on reactor vessel and provided with sealed cap secured thereon, two adjustable plugs installed in stationary section, large shell mounting eccentrically arranged small shell, and shield with hole that horizontally shields the shell; the latter is mounted in a spaced relation to sealed cap. Annular slit is provided under dome between sealed cap and butt-end edge of shell; shield is placed above stationary section and adjustable plugs; clearance between sealed cap and shell communicates with that between stationary section with plugs and shield; the latter communicates through its hole with inner space of shell; the latter communicates through slit with clearance between sealed cap and shell. In this way natural cooling system is organized to ensure reliable cooling under normal and emergency conditions. EFFECT: enhanced reliability and safety of reactor. 3 cl, 3 dwg