Invention Grant
- Patent Title: Oxidation decontamination reagent for removal of the dense radioactive oxide layer on the metal surface and oxidation decontamination method using the same
- Patent Title (中): 用于去除金属表面致密的放射性氧化物层的氧化去污试剂和使用其的氧化去污方法
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Application No.: US14304744Application Date: 2014-06-13
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Publication No.: US09390822B2Publication Date: 2016-07-12
- Inventor: Sang Yoon Park , Hui-Jun Won , Wangkyu Choi , Jeikwon Moon , Chong-Hun Jung , In-Ho Yoon , Jun-Young Jung
- Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
- Applicant Address: KR Daejeon
- Assignee: Korea Atomic Energy Research Institute
- Current Assignee: Korea Atomic Energy Research Institute
- Current Assignee Address: KR Daejeon
- Agency: Lathrop & Gage LLP
- Priority: KR10-2013-0070500 20130619
- Main IPC: G21F9/00
- IPC: G21F9/00 ; C23F15/00 ; G21F9/28 ; C23G1/08 ; C23G1/10
Abstract:
The present invention provides an oxidative decontamination reagent for removal of the dense radioactive oxide layer on a metal surface, which comprises an oxidizing agent, a metal ion, and an inorganic acid. The oxidative decontamination reagent of the present invention is characteristically prepared by adding a metal ion to the conventional oxidative decontamination reagent containing an oxidizing agent and an inorganic acid. When the oxidative decontamination reagent of the present invention is used, electric potential of the metal parts of the primary system of the nuclear power plant can be regulated as passive potential owing to the added metal ion during the oxidative decontamination of the primary metal part of the nuclear power plant. Therefore, by maintaining electric potential of the metal part as passive potential, local corrosion can be inhibited and at the same time secondary waste can be significantly reduced.
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