Expected Service Life and Cost Considerations for Maintenance and New Construction Protective Coating Work

摘要

This paper is an update to "Expected Service Life and Cost Considerations for Maintenance and New Construction Protective Coating Work" co-authored by J. L. Helsel and R. Lanterman for NACE Corrosion 2016. Designed to assist the coatings engineer or specifier in identifying candidate protective coating systems for specific service environments applicable to a broad array of industries, this paper provides: 1) commonly used generic coating systems; 2) service life for each in specific environments; 3) current material costs; 4) current field and shop painting costs; and 5) guidelines for calculating approximate installed costs of the systems. Guidelines for developing long-term life-cycle costs and number of paintings for the expected life of the structure are included. The basic elements of economic analysis and justification are addressed together with guidance on the preparation of a Present Value Analysis. Examples are provided to aid the reader in the proper use of the information. Updates to the paper include revisions to the coating systems for atmospheric exposure and immersion service, new discussion related to maintenance painting strategies and updated cost data.