High-Density Polyethylene (HDPE) is a popular liner material for aging steel pipelines. It is resistant to corrosion, relatively low cost, readily available, and has a long service life. But, at the same time, it is vulnerable to chemical permeation.
A hydrogen sulfide release can result in a health, safety or environmental event. Obviously, many of these materials are flammable—a containment failure can be costly in terms of both assets, liabilities and human life.