This paper reviews fundamental corrosion issues concerning the Crude Unit process. It is, in concise form: a description of the process and major equipment found in the Crude Unit; types of corrosion and where they occur; corrosion monitoring and inspection advice; and a list of related references for further reading.
Keywords: Crude Unit, Atmospheric Column, Vacuum Column, desalting, inorganic salts, sulfur compounds, organic acids, organic chlorides, naphthenic acid, caustic addition, pH control, corrosion inhibitor, water washing, corrosion rate measurement