Selection Criteria for Protective Linings: Survey Findings

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By Luis F. Granes, Sauereisen Inc.

The wastewater environment poses substantial challenges to the integrity of manholes, lift stations, and treatment plants. Protective coatings and linings are one of the major technologies for protecting underground municipal assets. According to an independent survey of wastewater engineers, municipal managers and contractors, a chemical-resistant lining's permeability to corrosive substances is determined to be the most important consideration during product selection.

Water Online, a leading service for the wastewater industry, conducted the survey in April 2006. In this article, the survey's sponsor, Sauereisen, Inc., discloses the findings and explains implications for specifying coatings and linings.

Among the survey's most prominent statistics:

• Approximately 70 percent of respondents said permeability to corrosive substances is the most critical factor for chemically resistant linings.
• Yet, more than 64 percent said permeability is the most commonly overlooked aspect of corrosion-resistant lining selection.

This seemingly incongruent philosophy in the industry suggests the need for closer evaluation. Sauereisen Inc.'s insight on the subject is backed by 108 years of experience manufacturing specialty materials and multitudes of case histories within wastewater environments.

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•Full Article: Selection Criteria for Protective Linings: Survey Findings