August 2018, Vol. 245, No. 8
PPSA 2018 Pigging Update
In-Line Inspection of Low-Pressure, Low-Flow Gas Pipelines
By Mark Olson, President, Entegra, John Skinner, Lake Superior Consulting, and Brian Vandermark, President, Select Pipeline Services Maintaining control of an In-Line Inspection (ILI) tool’s speed is one of the most critical elements in successfully assessing the condition of a pipeline. Success is defined as receiving an intact tool at the conclusion of the inspection and acquiring data of sufficient quality to achieve the vendor’s sizing and accuracy specifications. An intact tool means not leaving any pig parts in the pipeline and minimizing damage to any of the tool’s sensing systems. Data quality must be sufficient for the ILI vendor to warra
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