Coating method for overboard pipes in exhaust gas cleaning system (EGCS) discharge water line

Abstract

An exhaust gas cleaning system (EGCS) is a relevant compliance to meet the IMO 2020 global sulfur limit requirements. However, due to the corrosion on the overboard pipe of the EGCS discharge water line, a large amount of seawater enters the engine room, which has a significant impact on the ship’s operation. This is most likely caused by a defect in the coating or damage to the coating incurred during pipe installation. However, checking the ship where the pipe was corroded shows another cause of corrosion, and a very easy method could be developed to prevent recurrence of the same problem. This study focuses on the importance of the coating method for EGCS discharge water overboard pipes.