In order to comply with the IMO regulations regarding lower sulfur emissions of 0.5% m/m as of 01.01.2020, vessel owners install Exhaust Gas Cleaning Systems (EGCS) / Scrubbers.
Scrubber manufacturers recommend the protection of certain areas: the distance piece overboard of scrubber drain line, the connection of sea water pipes where polyethylene coating is destroyed and the vessel’s side shell in a range of four meters around discharging pipe.
The Chesterton Solution:
Prior to the application of Chesterton ARC SD4i, the surface was washed with fresh water by hydro jet, the previous coating was removed and the surface was decontaminated and grit blasted to SA 2.5, followed by removal of abrasive residues. ARC SD4i was applied in two coats to protect metal surface against erosion, corrosion and aggressive chemical immersion without affecting the vessel’s hydrodynamic properties.
Return on Investment:
Two 16ltr drums of SD4i with a cost of 4.720 USD were used. The cost of the Chersterton solution is almost negligible compared to the total cost of 3-4 million USD for installation of scrubber system and workmanship. Additionally, the expenses arising from repairs due to the use of low quality materials and the daily losses while the vessel remains off-hire must be taken into account. The expectation is that ARC SD4i coating will still be intact after 5 years of vessel operation.