Skip to main content

Copper dissolution and electrochemical behavior in EDTA- and EDA-based solutions for steam generator chemical cleaning

Type of Publication
Year of Publication
2003
Authors

D.H. Hur; M.S. Choi; E.H. Lee; U.C. Kim

Abstract

Copper dissolution and electrochemical behavior have been investigated in order to find out which parameters are critical and important during the two major copper removal processes for chemical cleaning of nuclear steam generator and to evaluate safety aspects and effectiveness of these processes. Hydrogen peroxide was very effective for the process using EDTA-based solution at 38 degreesC to control the corrosion potential of copper into an optimum potential range from -0.3 to +0.2 V for copper sludge dissolution. Corrosion rates of carbon steel SA 285 Gr.C and Alloy 600 were very small in this potential range. The process using EDA-based solution at 60 degreesC was effective to dissolve copper sludge if the corrosion potential of copper could be controlled above -0.3 V. However, it was very difficult under the laboratory conditions to raise its corrosion potential to this range by air blowing and stirring. (C) 2003 Elsevier Science B.V. All rights reserved.

DOI

10.1016/s0029-5493(03)00100-6

Volume

224

Notes

Times Cited: 2 2

Pagination

207-212

Number
2
ISSN Number

0029-5493

We are professional and reliable provider since we offer customers the most powerful and beautiful themes. Besides, we always catch the latest technology and adapt to follow world’s new trends to deliver the best themes to the market.

Contact info

We are the leaders in the building industries and factories. We're word wide. We never give up on the challenges.

Recent Posts