Patent Number: 056573600
Section: abstract

A reactor container is composed of a dry well and a wet well and, in the reactor container, there is provided with a dry well cooling system, the dry well cooling system including, in one aspect, an in-dry-well heat exchanger disposed in the dry well of the reactor container, an in-dry-well blower connected to a primary side of the in-dry-well heat exchanger, a circulation pipe connected to a secondary side of the in-dry-well heat exchanger, a normal cooling system connected to the secondary side of the in-dry-well heat exchanger through the circulation pipe and including an equipment cooling pump, an equipment cooling heat exchanger and a seawater pump, and a standby cooling system connected to and branched from the circulation pipe. The dry well cooling system may include an extra-dry-well heat exchanger and blower, and in such case, there is provided an emergency dry well cooling system equipment cooling system connected to a secondary side of the extra-dry-well heat exchanger, the emergency dry well cooling system equipment cooling system including an emergency dry well cooling system equipment cooling pump, an emergency dry well cooling system equipment cooling heat exchanger and an emergency dry well cooling system equipment cooling seawater pump. The pipe lines may respectively be connected to the dry well and the wet well of the reactor container at one end thereof.