The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 2010
Filed:
Jul. 14, 2006
Hideyuki Hosokawa, Hitachinaka, JP;
Makoto Nagase, Mito, JP;
Kazushige Ishida, Hitachi, JP;
Youichi Wada, Hitachinaka, JP;
Naoshi Usui, Tsuchiura, JP;
Motohiro Aizawa, Hitachi, JP;
Motomasa Fuse, Hitachinaka, JP;
Hideyuki Hosokawa, Hitachinaka, JP;
Makoto Nagase, Mito, JP;
Kazushige Ishida, Hitachi, JP;
Youichi Wada, Hitachinaka, JP;
Naoshi Usui, Tsuchiura, JP;
Motohiro Aizawa, Hitachi, JP;
Motomasa Fuse, Hitachinaka, JP;
Hitachi-GE Nuclear Energy, Ltd., Ibaraki, JP;
Abstract
It is an object of the present invention to efficiently suppress radionuclide deposition on a reactor component of nuclear power plant. Radionuclide deposition on the surface of a metallic reactor component of nuclear power plant is suppressed by forming a ferrite film on the component, wherein the film is formed, after decontamination for removing radionuclides contaminants from the component surface is completed and before the plant is started up, by contacting a treatment solution which mixes a first agent containing the iron (II) ions, a second agent for oxidizing the iron (II) ions into the iron (III) ions and a third agent for adjusting pH level of a solution to 5.5 to 9.0 in this order with the reactor component surface.