What is Gas pipeline pigging?
What is Gas pipeline pigging? Pigging refers to a technique of cleaning or inspection of pipeline through recovering trapped products in the pipelines without stopping operation. It is also used to clean oil and gas pipelines. In a multi-product pipeline, pigs are very helpful to separate different products. Why is it called pigging a line? Why is it called “pigging”? One theory is that two pipeliners were standing next to a line when a pig went past. As the pig travelled down the line pushing out debris, one of them made the comment that it sounded like a pig squealing....