January 2021

Columns

Corrosion: Address damage caused by galvanic corrosion

At petrochemical and refining facilities, it is common for U-clamps over piping runs to become corroded, sometimes to the extent where they are completely thinned out.

Anwer, A., Qureshi, N., Contributing Writer

At petrochemical and refining facilities, it is common for U-clamps over piping runs to become corroded, sometimes to the extent where they are completely thinned out. Localized thinning of supports can also happen, which may remain unnoticed. Fasteners lose their coating and a thin layer of rust appears that can potentially turn into something more significant that requires action. These forms of galvanic corrosion can be observed externally with visual aids only. Slowly, these damages lead to the implementation of refurbishment projects to eliminate this form of corrosion. While notable cases exist where galvanic corrosion happens within process equipment, the focus here is the monitoring

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