Hitachi, Ltd.

Hitachi Engineering Co., Ltd.

Hisao Itou

Yasumasa Furutani

Masahito Kobayashi

Katsumi Ohsumi

Akira Minato

Kenya Ohashi

Takashi Honda

Osao Sumita

Masayuki Saito

Eiji Kashimura

A nuclear power plant wherein surfaces of components contacting with nuclear reactor cooling water containing radioactive substances are coated with an oxide film, preferably being charged positively and/or containing chromium in an amount of 12% by weight or more, is prevented effectively from the deposition of radioactive substances thereon.

Inhibition of deposition of radioactive substances on nuclear power

An object to-be-washed bearing an oxide on the surface of a parent material metal is immersed in a liquid containing a complexing agent, electrons having energy levels on the base side with respect to the Fermi level of the oxide are generated outside the parent material metal by supplying external energy, and the electrons are injected into the oxide of the object to-be-washed immersed in the liquid.

Method of removing oxide on metal surface

Growing community of inventors

Hitachi, Japan

Hisao Itou