In a refinery crude distillation column, up to 40% of the total heat removal may be found in the tower overhead condenser. The quantity of duty available makes heat integration (HI) between the column overhead and unit feed an interesting project. Approximately 70% of the present crude units recover some portion of this duty. However, many of these units suffer from persistent and serious corrosion problems in the overhead system. In extreme cases, the viability of the entire refinery site may be compromised due to fouling and corrosion conditions.