Metal treatment – Process of modifying or maintaining internal physical... – Processes of coating utilizing a reactive composition which...
Reexamination Certificate
2006-07-14
2010-10-12
Wyszomierski, George (Department: 1793)
Metal treatment
Process of modifying or maintaining internal physical...
Processes of coating utilizing a reactive composition which...
C148S276000, C148S277000, C148S284000, C376S305000, C376S306000, C376S310000
Reexamination Certificate
active
07811392
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.
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Aizawa Motohiro
Fuse Motomasa
Hosokawa Hideyuki
Ishida Kazushige
Nagase Makoto
Hitachi-GE Nuclear Energy, Ltd.
Mattingly & Malur, P.C.
Wyszomierski George
Zheng Lois
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