Suppression of electrolytic corrosion at accelerator cooling-water facility by changing of rust inhibitors; Reduction of rust and cost

Dei, Tatsumi; Suganuma, Kazuaki ; Fujirai, Kosuke; Suzuki, Katsuo; Suzuki, Hiroshi*; Nakata, Morihiro*; Hosokawa, Hideaki*; Onose, Yuichiro*; Watanabe, Yasuhiro  ; Shinozaki, Shinichi ; Yamazaki, Yoshio 

Accelerator cooling-water facility cannot prevent electrolytic corrosion because the systems consist of several different kinds of metals. We have confirmed that the electrolytic corrosion certainly occurs between oxygen-free copper and carbon steel, and cannot be suppressed by the rust inhibitor used so far. We have chosen a new rust inhibitor and confirmed that the new rust inhibitor can prevent the corrosion progression of carbon steel as well as oxygen-free copper. Moreover, using the new rust inhibitor brings about saving water and the cost reduction of the inhibitors.