STRESS CORROSION CRACKING RELIEVING METHOD OF NUCLEAR POWER PLANT IN-PILE STRUCTURE AND NUCLEAR POWER PLANT

摘要

PROBLEM TO BE SOLVED: To provide a stress corrosion cracking relieving method of a nuclear power plant in-pile structure and a nuclear power plant for reducing a using quantity of a platinum group element required for improving a hydrogen injection effect, facilitating the processing work, and reducing emission of radioactivity from an oxide film by reduction in ECP. SOLUTION: In the stress corrosion cracking relieving method of the nuclear power plant in-pile structure and the nuclear power plant, metallic oxide having a property of diffusing hydrogen adsorbed to a platinum group element compound along a surface is stuck on a surface of the in-pile structure, the platinum group element compound is formed on a surface of the metallic oxide and at least one of the inside, and chemicals for forming the metallic oxide and the platinum group element compound are injected into a recirculating system of a nuclear reactor.