Pipelines 2019
A 60-Year History of the Efficacy of Polyethylene Encasement of an Iron Pipe Installation in an Aggressive Soil Environment
Publication: Pipelines 2019: Condition Assessment, Construction, and Rehabilitation
ABSTRACT
The Lafourche Parish Water District #1 (LPWD#1) has had an ongoing research project with the Ductile Iron Pipe Research Association (DIPRA) through the periodic evaluation of a four-inch cast iron water main in our system. Installed in 1958, it was the first known pipeline to use polyethylene encasement as a means of corrosion control. Over the past 60 years, the LPWD#1 has cooperated as DIPRA conducted field examinations of the pipe in an effort to evaluate the effectiveness of the film. In that time, some 10 investigations have been performed, with the most recent occurring in August 2018—after 60 years of service. Here, we summarize the results of those investigations, which culminated in the 60th-year investigation detailed in this report.
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REFERENCES
AWWA (American Water Works Association). (2018) Polyethylene Encasement for Ductile-Iron Pipe Systems, Standard ANSI/AWWA C105/A21.5-2018. AWWA, Denver, CO
Cox, A., (2012) Fifty-Year History of External Corrosion Control for Iron Pipelines with Polyethylene Encasement, Materials Performance, June 2012, Vol. 51 No.6, p 46
ASTM A674 (latest revision), Polyethylene Encasement of Ductile Iron Pipe Systems, ASTM, West Conshohocken, PA
ISO 8180 (latest revision), Ductile Iron Pipes – Polyethylene Sleeving, ISO, Geneva, Switzerland.
Horton, A.M., Lindemuth, D., and Ash, G. (2006), Corrosion Control Performance Monitoring of Ductile Iron Pipe in a Severely Corrosive Tidal Muck, Material Performance, May 2006, pp 50-54
Horton, A.M., Ash, G. (2013), Polyethylene Encasement Methodologies: A 10 Year Field Study on Ductile Iron Pipe in a Severely Corrosive Environment, Proceedings, NACE Corrosion 2013, Paper No. 2655.
Bell, J., Moore, C., Solis, L, and Bell, G. (2012), Investigation of Corrosion Mechanisms and Control for Encased Ductile Iron Pipe, Materials Performance, June 2012, pp 34-50
Information & Authors
Information
Published In
Pipelines 2019: Condition Assessment, Construction, and Rehabilitation
Pages: 514 - 521
Editors: Jeffrey W. Heidrick, Burns & McDonnell and Mark S. Mihm, HDR
ISBN (Online): 978-0-7844-8249-0
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Jul 18, 2019
Published in print: Jul 18, 2019
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