Investigating of Erosion Corrosion in Horizontal Steel Pipes with Slurry Seawater Flow


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Abstract


Erosion corrosion is main problem in marine structures, such as offshore pipelines and a ship's propeller churning in the ocean. Understanding the failure mechanism due to erosion helps in the review of pipeline design. This paper concerns with studying the behavior of A106 carbon-steel pipes working in two different erosive environments (i.e. plain and slurry seawater). Series of laboratory experiments are carried out to investigate the rates of iron losses due to both flow rate variations and sand concentration variations. The flow rate is controlled to cover both the laminar and turbulent flow regimes. The sand concentration varies from null to 9 g/l. The relationship between the rate of corrosion rate and flow rate at different levels of contamination is investigated. A regression equation is developed to describe the relationship of different erosion-corrosion rate at laminar and turbulent flow regimes along with different sand contamination levels.
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Keywords


Erosion-Corrosion; Turbulent; Pipeline Corrosion; Slurry; Seawater

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