A decay heat removal system for a liquid metal reactor, in which a decay
heat exchanger (DHX) is installed concentrically with an intermediate
heat-exchanger (IHX) in the same cylinder which separates the DHX and IHX
from the reactor pool fluid, and serves to remove the reactor core decay
heat. The cylinder surrounds the IHX and the DHX, and has an opened top
portion protruded out of the level of the fluid in a hot pool, a bottom
portion connected to a cold pool and a guide pipe for allowing the
passage of the fluid from the hot pool into the IHX. The decay heat
removal system can remove decay heat immediately after occurrence of an
accident, thereby improves the safety of a nuclear plant.