Kabushiki Kaisha Toshiba

Ishikawajima-harima Heavy Industries Co., Ltd.

The Tokyo Electric Power Company, Incorporated

Mitsuru Sambongi

Seiji Yamamoto

Masato Okamura

Kenji Yamazaki

Junichi Takagi

Tetsuo Oosato

Nagayoshi Ichikawa

Shunichi Suzuki

Tadasu Yotsuyanagi

Kenro Takamori

Yuichi Fukaya

Takashi Hirano

Takeshi Shibano

Kazuo Murakami

Yukio Henmi

Takasi Hirano

In a method of reducing corrosion of a material constituting a nuclear reactor structure, an electrochemical corrosion potential is controlled by injecting a solution or a suspension containing a substance generating an excitation current by an action of at least one of radiation, light, and heat existing in a nuclear reactor, or a metal or a metallic compound forming the substance generating the excitation current under the condition in the nuclear reactor to allow the substance generating the excitation current to adhere to the surface of the nuclear reactor structural material, and by injecting hydrogen in cooling water of the nuclear reactor while controlling the hydrogen concentration in a feed water.

Method of reducing corrosion of nuclear reactor structural material

In a method of reducing corrosion of a metal material, a substance such as semiconductor for generating an electric current by thermal excitation is coated or adhered on a metal material surface, to be exposed to a water having a high temperature of 150&#xb0; C. or more, of a boiler and ducts or pipes, to which hot water heated by the boiler contacts, of a thermal electric power plant or a nuclear reactor structural material or ducts or pipes surrounding the reactor in a nuclear power plant.

Method of reducing corrosion of metal material

Growing community of inventors

Chiyoda-ku, Japan

Mitsuru Sambongi