STEAM GENERATOR AND NUCLEAR POWER PLANT HAVING THE SAME

摘要

The present invention relates to a steam generator and a nuclear power plant having the same. The steam generator includes: a first flow path which a first fluid flows along; a second flow path which is adjacent to the first flow path to exchange heat with the first flow path, and a second fluid flows along; and a third flow path which is adjacent to the second flow path to exchange heat with the second flow path, and a third fluid flows along. The first fluid is supplied from a nuclear reactor coolant system to the first flow path. The third fluid is supplied from a water supply system of a nuclear power plant to an inlet of the third flow path. Vapor is generated by heat exchange with the second flow path, and is discharged to a turbine system connected to an outlet of the third flow path. The second flow path is formed to exchange heat with the first flow path and the third flow path, individually, and to circulate the heat so as to prevent the first fluid from being directly spread to the third flow path when an accident between the first flow path and the second flow path occurs.