Inline corrosion inspection verifies integrity of nonpiggable, noninterruptible gas lines.

Enbridge Energy Co. Inc. has completed a project which demonstrated the validity of external corrosion and internal corrosion direct assessment (ECDA and ICDA) for its pipelines.The primary goal of the project was to demonstrate that external corrosion direct assessment (ECDA) and internal corrosion direct assessment (ICDA)-performed in compliance with the National Association of Corrosion Engineers (NACE) and Interstate Natural Gas Association of America (INGAA) methodologies-could be used effectively to verify and manage the integrity of nonpiggable and noninterruptible natural gas pipeline segments.The programs were conducted with in-line inspection (ILI) using high-resolution magnetic...

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