A large amount of black powder has been continuously removed from a natural gas pipeline in the south China Sea since commissioning.It does not accord with the demands of the internal inspection because the presence of tees in the submarine pipeline.In order to further understanding the internal corrosion status of the pipeline,we conducted research on the internal corrosion mechanism by black powder source investigation,corrosion monitoring and testing data analysis,corrosion influencing factors analysis,and corrosion simulation,and made the internal corrosion control measures finally.
natural gas pipelineblack powdercorrosion mechanismcorrosion simulation
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