This paper describes the relevant characteristics of available joint coating types and examines different testing protocols to explore these characteristics. The objective is to assist in the selection of appropriate, practical, cost effective girth weld protective coatings. that will provide good long-term corrosion protection.
This paper is a significant update to “Costing Considerations for Maintenance and New Construction Coating Work”1 on protective coating costing and selection co-authored by M. F. Melampy, M. P. Reina and K. R. Shields in 1998. Designed to assist the coatings engineer or specifier in identifying suitable protective coating systems for specific industrial environments.
There are a number of petrochemical plants that experience equipment failure and production loss due to corrosion. Proper maintenance of their existing equipment greatly reduces a plant’s down time therefore allowing production to continue. For those facilities that do not have an existing maintenance-painting program, we have developed a beginners / non-technical program guide that is easy to understand and implement as it addresses many plant’s existing and future coating systems.
Generic descriptions of a coating material does not always ensure that it will perform in the CUI service. Testing and acceptance criteria will help owners to ensure that specific coating materials can provide service as required in industrial CUI environments. The intent of these test procedures is not to rank coatings, but test and accept coatings for use in specifications for actual application.
This paper describes the results of a research study to determine the effectiveness of various rehabilitation materials and techniques for concrete bridges. This work reflects the needs for identifying effective materials and techniques to offer protection against corrosion of steel in concrete as well as patch repair in concrete girders.
In some quarters of society there is a public outcry regarding the significant corrosion, coatings deterioration and safety concerns associated with North American bridges. Against this backdrop, this paper describes the application more than 20 years ago of an innovative coating system for the rehabilitation and lead abatement of a major truss bridge superstructure in Alberta, Canada.
Corrosion under Insulation (CUI) is accelerated corrosion that takes place under insulation typically used to conserve energy, help with process control, and protect workers from temperature extremes. CUI is an issue for facility owners in many industries that use heat or cold in their industrial processes, including chemical processing, refining, fertilizer manufacturing, and power generation. Insulation used in these applications is generally mechanically attached to the substrate vessel or pipeline and is typically covered with cladding. Cladding is typically made out of metal or plastic and is applied to protect the insulation from physical damage and to keep water away from the insulation and substrate.
The South Valley Sewer District, located outside of Salt Lake City, Utah, experienced severe degradation of the concrete substrate the Membrane Basins at the Jordan Basin WRF. The Bowen Collins & Associates designed facility initially opened for service in July of 2012. By 2017 the facility was showing significant effects of concrete deterioration from chemical attack, caused by citric acid and sodium hypochlorite used as a part of the cleaning procedures in the membrane basins.
While commercial painting is often thought to be less rigorous or less technical than industrial painting, the commercial painting industry has its own set of demands on a coating and is not without its share of coating problems. The authors experience demonstrates that there are commonalities in failures of coatings in commercial painting.
This presentation will focus on the performance and aesthetic issues encountered when painting masonry surfaces. Contractors will also learn how to cost-effectively add color and improve appearance and weather protection to masonry jobs. Objectives of the presentation are education on proper surface preparation, how to select an appropriate coating for a long-lasting finish and new coating technology.