Suppression method of radionuclide deposition on reactor component of nuclear power plant and ferrite film formation apparatus

A method of suppressing deposition of radionuclides on components of a nuclear power plant comprising the steps of:

• forming a ferrite film by contacting a first chemical including iron (II) ions, a second chemical for oxidizing the iron (II) ions to iron (III) ions, and a third chemical for adjusting the pH of a processing solution containing a mixture of the first and second chemicals to be 5.5 to 9.0 with the metal member surface in a time period from a finishing stage in decontamination step of removing contaminants formed on the surface of metal member composing the nuclear power plant;
• and
• suppressing deposition of radionuclides on the metal member by the ferrite film.

A method of suppressing deposition of radionuclides on components of a nuclear power plant comprising the steps of:

• forming a ferrite film by contacting a first chemical including at least one of iron (II) ions and iron(III) ions, a second chemical for reducing the iron (III) ions, and a third chemical for adjusting the pH of a processing solution containing a mixture of the first and second chemicals to be 5.5 to 9.0 with the metal member surface in a time period from a finishing stage in decontamination step of removing contaminants formed on the surface of metal member composing the nuclear power plant;
• and
• suppressing deposition of radionuclides on the metal member by the ferrite film.