公开(公告)号：US09390822B2

公开(公告)日：2016-07-12

申请号：US14304744

申请日：2014-06-13

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

Inventor： Sang Yoon Park ,  Hui-Jun Won ,  Wangkyu Choi ,  Jeikwon Moon ,  Chong-Hun Jung ,  In-Ho Yoon ,  Jun-Young Jung

IPC: G21F9/00 ,  C23F15/00 ,  G21F9/28 ,  C23G1/08 ,  C23G1/10

CPC classification number: G21F9/004 ,  C23F15/00 ,  C23G1/085 ,  C23G1/10 ,  G21F9/28

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.

Abstract translation: 本发明提供一种用于去除金属表面上的致密放射性氧化物层的氧化去污试剂，其包括氧化剂，金属离子和无机酸。 本发明的氧化去污试剂的特征在于，将常规的含有氧化剂和无机酸的氧化性去污剂加入金属离子。 当使用本发明的氧化性去污试剂时，核电站的一次系统的金属部分的电位可以被调节为被动电位，这是由于在金属离子的主要金属部分的氧化去污期间由于添加的金属离子 核电站。 因此，通过将金属部件的电位维持为被动电位，可以抑制局部腐蚀，同时能够显着降低二次废弃物。