A 6,548 sq ft, 10,000 barrel capacity bolted steel tank at a major energy development company was leaking due to extensive corrosion damage. The crude oil tank had holes in the floor and was leaking at the joints. The asset owner needed a high performance coating that could plug these gaps, and function as an effective anti-corrosion coating long into the future. The owner chose SPI for their track record in providing effective solutions to the oil and gas industry.
Based on its history and success in this type of project, the applicator and owner chose SPI’s chemical resistant PTU™ anti corrosion coating with AE-4 polyurea to repair and line the steel tank. Surface preparation was done by abrasive blasting to remove all material from the surface per SSPC- SP 5 white metal Blast. SPI’s PTU™ chemical resistance polyurea coating was used with an AE-4 additive to increase its adhesion to steel. The protective lining was applied at a thickness of 2.5mm (approx. 100 mils) to the floor and walls of the tank. The owner also chose to spray-apply a PTU™ polyurea coating with AE-4 to the tank’s external side for extra protection.
Six months later, a visual inspection of the internal protective lining was carried out, including vacuum testing on the floor of the tank. The PTU™ polyurea coating is performing well in the working conditions, and the customer was more than happy with the results. SPI’s innovative anti corrosion coating had far exceeded their expectations.