The pipeline Enhanced Corrosion Management Analysis (ECMA) has been conducted over transmission pipelines that experienced considerable external metal loss after a relative short time in operation. Pipeline historical and current data: pipe design, construction, soil, corrosion control, monitoring, inspection and operational were reviewed and, together with in line inspections (ILI) data, aligned to aboveground surveys and compared to field excavation results. The ECMA methodology proofed to be a cost-effective approach to determine the engineering root causes of the external metal loss identified and to develop adequate short, mid and long term mitigation plans.

Subject
External corrosion direct assessment, Piping, Girth welds, Pipelines, Root cause analysis, Tools, Metal loss, Corrosion growth, Shielding, Wall thickness, Corrosion data, Surveys, Soil
Keywords:
Pipeline Integrity, Corrosion Control, Engineering Root Cause, In-line Inspection, Coating CP Shielding
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2017
Association for Materials Protection and Performance (AMPP)
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