Abstract
This study indicated the deterioration of the steel pipe and beam structure in west coast Sumatra made of ASTM A252, and also pipeline along Riau land-Jambi - Batam Island. It was found that severest corrosion occurs at the rate up to 1.6 mm/year (63 mpy) on the steel cross beam-800 on west coast Sumatra. Whereas the corrosion rates on ASTM A234 and API 5L steel structures along the pipeline across Riau - Jambi - Batam occur from the high-to-severe up to 0.43 mm/year (17 mpy) mainly on pipe elbow 16” diameter. Due to this corrosion attack, the steel infrastructure requires whole protection including sacrificial thickness, surface coating, and cathodic protection. The corrosion attack data may be used to provide the required effort and its priority to protect the steel pile and pipe infrastructures on Sumatra Island.
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