Pipeline Integrity Management Through Corrosion Mitigation and Inspection Strategy in Corrosive Environment: An Experience of Arabian Gulf Oil Company in Libya

摘要

Pipeline integrity, safety and reliability are major concerns to all pipeline operators and managers. Theprimary objective of pipeline integrity management (PIM) is to maintain pipeline in a fit-for-servicecondition while extending its remaining life in the most reliable, safe and cost effective manner. Asuccessful pipeline integrity management program incorporates design, material selection, corrosionmitigation, monitoring and inspection, maintenance, operations, risk evaluation and communicationconcepts. These concepts are interlinked.Arabian Gulf Oil Company Libya has large network of oil and gas pipelines. This paper presents theexperience of pipeline integrity management of AGOCO(1) pipelines through material selection,corrosion mitigation, corrosion monitoring and inspection strategies. External corrosion on buriedpipeline is controlled with a combination of pipeline coatings and cathodic protection while internalcorrosion is controlled with a combination of chemical inhibitors, periodic cleaning and process control.The monitoring and inspection techniques provide a way to measure the effectiveness of the corrosioncontrol systems and provide an early warning when changing conditions may be causing a corrosionproblem. This paper describes the pipeline integrity management system used for AGOCO pipelinesbased on standard practices of corrosion mitigation and inspection.