Pengaruh Jenis Coating Wet Film Dan Metode Pengaplikasian Terhadap Laju Korosi Pada Material Pipa A106 Gr B Di Area Splash Zone

Abstract

An oil and gas company engaged in crude oil exploration and distribution is experiencing corrosion issues on pipeline networks, particularly in the splash zone area exposed to seawater splashes. This condition accelerates the damage to the pipe surface, reduces its service life, and increases the risk of leakage. Therefore, effective external corrosion protection is crucial to extend the life of the pipeline. This study aims to evaluate the effectiveness of corrosion protection based on various types of coatings and application methods. Salt spray tests were conducted in accordance with ASTM B117, using natural seawater from the field as the corrosion medium. The variables tested included the type of coating and application methods (brush, roll, and spray). The test results showed that the lowest corrosion rate occurred on specimens coated with Jotun Polyurethane and applied using the spray method with a thickness of 350 microns resulting in a corrosion rate of 0.000944638 mm/y. This study provides a basis for selecting the optimal coating system to protect pipelines in the splash zone environment.