August 2019, Vol. 246, No. 8

Pigging Update

Speed Control Cleaning Pigs Are Multi-Purpose

High-velocity natural gas pipelines pose a challenge to effective cleaning for corrosion mitigation purposes, maintaining throughput efficiency and pre-inline inspection (ILI) cleaning runs.  Studies show the best pipeline cleaning occurs when the tool runs at about 8 mph (3.57 m/s), allowing brushes, magnets, cups and discs to do their job. Speeds over 10 mph (4.47 m/s) tend to bypass the debris and liquids, there-by proving ineffective. Since 2010, Inline Services has met the demand for speed control (pig) cleaning tools in pipeline sizes 30-inch through 42-inch. Pipeline cleaning speeds have been safely controlled by these tools in pipelines wit

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