DEPOSITION METHOD OF NOBLE METAL TO CARBON STEEL MEMBER OF ATOMIC POWER PLANT, AND DEPOSITION SUPPRESSION METHOD OF RADIOACTIVE NUCLEI TO CARBON STEEL MEMBER OF ATOMIC PLOWER PLANT

摘要

PROBLEM TO BE SOLVED: To provide a deposition method of a noble metal on a carbon steel member of an atomic power plant capable of shortening the time required for the deposition of the noble metal to the carbon steel member and an adhesion suppressing method of the radioactive nuclei to the carbon steel member of the atomic power plant capable of continuing an effect of suppressing the adhesion of the radioactive nuclei to the carbon steel member.SOLUTION: A deposition method of a noble metal includes: steps S4 to S6 of forming a nickel metal film on a surface contacting with cooling water of the carbon steel member of an atomic power plant; and steps S9 to S11 of depositing the noble metal on the surface of the nickel metal film. The step of forming the nickel metal film and the step of depositing the noble metal are carried out before activation of the atomic power plant after stopping the atomic power plant. A deposition suppression method of a radioactive nuclei includes a step S16 of forming a nickel ferrite film from the nickel metal film by bringing the water whose temperature is 200°C or more containing oxygen into contact with the nickel metal film deposited with the noble metal.SELECTED DRAWING: Figure 10