As a leading company in the field of pipeline integrity, GE has a wealth of experience inspecting pipelines, assessing the significance of defects, and recommending repair and mitigation strategies. The projects carried out by GE include many interesting and challenging examples. One of the most frequent challenges is the problem of inspecting multiple diameter or ‘unpiggable’ pipelines.
This paper desribes the development of a specific dual diameter high resolution MFL inspection tool for Williams Gas Pipeline, and the evolution of even more adaptable tools for inspecting pipelines that were previously classed as unpiggable.