Patent ID: 8731131

Claim:
A method of reducing corrosion of a material constituting a nuclear reactor structure comprising: applying a substance capable of generating an excitation current and a noble metal to a surface of a material constituting a nuclear reactor structure in advance; and controlling a concentration of oxidizing chemical species and a concentration of reducing chemical species in a nuclear reactor water so that a molar ratio of H 2 /O 2 is less than a value of 2 in which a catalytic reaction to recombine the oxidizing chemical species with the reducing chemical species is not accelerated by the noble metal, wherein the concentration of oxidizing chemical species and the concentration of reducing chemical species in the nuclear reactor water are controlled so that the molar ratio of H 2 /O 2 is less than a value of 2 by injecting hydrogen from a feed water system or a condensate system, and a hydrogen concentration in water in the feed water system or the condensate system is not less than 0.07 ppm and is less than 0.16 ppm.