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Title: Pipeline Casings-Reviewing An Old Problem
Author: Frank A. Perry
Source: American Gas Association 1988
Year Published: 1988
Abstract: Many years of controversy surround the practice of installing pipelines within casings. Requirements for this construction method when pipelines cross beneath railroad lines or roads have been presented by many authorities. Arguments against this practice have come mainly from those concerned with the control of corrosion action on the carrier pipeline within the casing. A study was implemented by the Transportation Research Board of the National Research Council. The research gave engineering details of the encasement of pipelines through highway and railroad roadbeds. The problems related to the corrosion of the carrier pipeline were not addressed in detail in this project. A recently completed initial phase of a research study, GRl-86/0209 State-of-the-Art Review: Practices for Pipeline Crossings at Railroads has been published. The work was conducted by the Department of Structural Engineering, Cornell University, Ithaca, New York, for the Gas Research Institute. This study did not investigate in great detail the corrosion situation inside a casing.

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