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Title: Alternative Renewal Methods-Large Diameter Pe Insertion
Author: Chris Hartig
Source: American Gas Association 1991
Year Published: 1991
Abstract: The subject of this paper is the insertion of an in service 20 cast iron natural gas pipeline with 18 polyethylene pipe. The format of the paper is informational in nature with a minimum of technical text on the subject. The paper covers the evaluation process of several renewal alternatives that ultimately led to the selection of large diameter insertion as the renewal methodology. Also discussed in detail is the engineering of the project and the construction phases of the insertion process including installation of alternate feed mains, isolation of the existing 20 cast iron main and eventual successful insertion with 3000 feet of 18 PE pipe.




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