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Title: Why Pig A Pipeline?
Author: B. Vernooy
Source: American Gas Association 1977
Year Published: 1977
Abstract: Pigs are used daily in the operation and construction of pipelines. They may be used for a variety of reasons: 1) to clean and increase line efficiency 2) to gauge or survey the I.D. of the pipe: 3) to separate products and 4) to dewaler lines after hydrostatic testing or for a number of other reasons. Although these devices are widely used, little has been done to compile data pertinent to pigs and pigging techniques. The purpose of this publication is to inform the reader of general pigging practices in modern pipeline operations, is not intended to he an instructional manual, hut rather a general guide to pigs and pigging practices. In general, the practices outlined in this book will be applicable up to a point: but in the final analysis, specific programs will have to be tailored to meet line conditions and company operating policies and procedures.

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