DECAY HEAT REMOVAL SYSTEM BY USING HYBRID HEAT PIPE HAVING COOLANT AND NEUTRON ABSORBER FOR COOLING A NUCLEAR POWER PLANT

摘要

According to the present invention, in a decay heat removal system for cooling a nuclear power plant to remove the decay heat of a reactor core (11) arranged in a nuclear reactor chamber (10), a decay heat removal system for cooling a nuclear power plant includes: a first heat pipe (110) which is arranged in the upper part of the nuclear reactor chamber (10) and is vertically arranged by corresponding to the position of an insertion hole formed in the upper end of the nuclear reactor chamber (10); an elevating driving part (120) which is combined with the upper part of the first heat pipe (110), vertically elevates the first heat pipe (110) to allow first heat pipe (110) to be selectively inserted into the control rod insertion hole (12) of the reactor core (11) arranged in the nuclear reactor chamber (10); and a second heat pipe (130) which is combined to touch the lower side of the nuclear reactor chamber, absorbs decay heat generated in the reactor core (11) and cools the same.