NUCLEAR REACTOR

摘要

A nuclear reactor allowing the secondary or tertiary cooling system of a steam feeding system to be simplified, comprising a reactor vessel (2) storing a reactor core (1), a first coolant (3) stored in the reactor vessel (2) and heated by the reactor core (1) for convection, first heat exchanger tubes (4) disposed in the reactor vessel (2) and coming into contact with the first coolant (3), and a second coolant (5) fed from the outside of the reactor vessel (2) to the first heat exchanger tubes (4) to cool the first coolant (3) and led to the outside of the reactor vessel (2).