AMPP Store - Products tagged with 'polyethylene encasement'

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07127 Investigating Ductile Iron Pipelines

Product Number: 51300-07127-SG

ISBN: 07127 2007 CP

Author: Daniel W. Crabtree, Mark R. Breslin, Chris J. Sordelet, Johnnie A. Terrazas, and John Van Deusen

Publication Date: 2007

$20.00

This paper presents several case histories where ductile iron pipeline sections have been investigated to ascertain the corrosioncontrol benefits of polyethylene encasement. Investigative procedures, included cell-to-cell potential surveys, side-drain technique measurements, in-situ and laboratory soil tests, pipe-to-soil potential measurements and excavation inspections.

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51318-11244- MIC Considerations for Cathodically Protected Encased Ductile Iron Pipelines: A Case Study

Product Number: 51318-11244-SG

Author: Jeffry B. Giddings / Mersedeh Akhoondan / Graham Bell

Publication Date: 2018

$20.00

A case study where MIC was recognized as primary cause of failure for an encased ductile iron water pipeline. The cathodically protected pipe was located within the proximity a creek crossing and had suffered from multiple failures.

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Evaluation of a 60-year old Iron Pipeline in a Corrosive Soil and Flow Test of a 97-year old Cement-mortar Lined Iron Pipeline

Product Number: 51321-16501-SG

Author: L. G. Horn

Publication Date: 2021

$20.00

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Forgotten Phenomenon: Corrosion of Galvanized Piping Underground

Product Number: 51324-20595-SG

Author: Michael J. Szeliga

Publication Date: 2024

$40.00

Water utilities have begun to install galvanized piping underground as a “new” form of corrosion control. While this is being called a “new” approach, the effectiveness of galvanized piping underground has been widely discussed in the corrosion literature for more than 70 years. This paper will summarize some of the documented findings regarding galvanized piping underground that is presented in the corrosion literature. The paper will also discuss the types of galvanizing available and how that impacts the rate of corrosion on galvanized piping underground.

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Independent Research on the Effectiveness of Polyethylene Encasement as a Corrosion Control Coating for Ductile Iron Water and Wastewater Piping

Product Number: 51324-20943-SG

Author: Michael J. Szeliga

Publication Date: 2024

$40.00

Polyethylene encasement (PE) is a coating method that consists of a loose wrap of thin plastic around ductile iron piping (DIP), that is typically held in place with PVC tape. It has become the primary means of corrosion control on DIP water and wastewater piping even though no large scale independent studies have been performed to document how often the thin plastic is damaged. Damage to the PE exposes the DIP to direct soil contact and corrosion can occur. The frequency of these exposed anodic (corroding) areas on polyethylene encased DIP has also never been compared to the frequency of anodic areas on uncoated DIP. Uncoated DIP is DIP that that has the 2 to 3 mils thick factory applied black asphaltic paint applied to it. The asphaltic paint is water permeable and provides no significant reduction in corrosion activity on DIP. This research project evaluated cell-to-cell potential data on 89,275 feet of uncoated DIP and 51,609 feet of polyethylene encased DIP. Cell-to-cell potential measurements are the only way to accurately detect areas of corrosion on unbonded DIP.

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Watermain Breaks - Materials Does Matter

Product Number: 51323-19290-SG

Author: Edward Larkin, Mehrooz Zamanzadeh (Dr. Zee), Aaron Ulmer, Nathan Pace, Anil Kumar Chikkam

Publication Date: 2023

$20.00

Watermain failures are not often recognized as corrosion but are usually referred to merely as “watermain breaks” because watermain pipe appears sound prior to failure. Some of the causes of watermain breaks are poor design, improper installation, surge or water hammer, soil movement, manufacturing defects, impact, internal corrosion, and external corrosion. Figure 1 shows some of the possible causes of the DI pipe.

Products tagged with 'polyethylene encasement'

07127 Investigating Ductile Iron Pipelines

51318-11244- MIC Considerations for Cathodically Protected Encased Ductile Iron Pipelines: A Case Study

Evaluation of a 60-year old Iron Pipeline in a Corrosive Soil and Flow Test of a 97-year old Cement-mortar Lined Iron Pipeline

Forgotten Phenomenon: Corrosion of Galvanized Piping Underground

Independent Research on the Effectiveness of Polyethylene Encasement as a Corrosion Control Coating for Ductile Iron Water and Wastewater Piping

Watermain Breaks - Materials Does Matter

Association for Materials Protection and Performance