STEAM GENERATOR OF DISPERSION TYPE FAST BREEDER REACTOR

摘要

PURPOSE:To eliminate a primary and a secondary cooling systems and contrive the improvement of reliability by dispersingly arranging a plurality of unit type fast breeder reactors in the periphery in a main vessel and arranging cartridge-made steam generators opposite to the unit type reactors. CONSTITUTION:A plurality of unit type reactors 22 are arranged in the periphery in a main vessel 21 in which sodium is housed. Cartridge type steam generators 23 are arranged in the center portion of the vessel 21 and furthermore a direct core cooled device 24 is set in the center portion thereof. The generated heat of the reactors 22 is heat-exchanged with the water of the steam generators 23 by the natural circulation of sodium as coolant and taken out as steam out of the vessel 21. Thereby conventional primary, secondary cooling systems and drive devices are eliminated and the cartridge-made steam generators 23 can be individually exchanged at need.