August 2018, Vol. 245, No. 8

PPSA 2018 Pigging Update

Making Simple Smart and Smart Simple: Cost-Effective, Low-Risk Pipeline Inspection

By Paul Clayton, i2i Pipelines, Manchester, UK Traditionally, pipeline pigging has two extremes. At one end of the spectrum are cleaning pigs and at the other end are in-line inspection (ILI) tools or intelligent pigs, and there is little that sits between. Cleaning pigs are basic tools that are frequently and easily deployed and carry little operational risk of lodging in the line, however, they gather little or no data. ILI tools are far more complex by design as the industry demands higher specification, greater accuracy and the ability to detect more types of pipeline defects. The consequence of this is larger tools needing specialist technicians, never mind the increased support and h

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