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HISTORICAL DOCUMENT. Selecting corrosion resistant metallic materials for supply, storage, pumping and injection of water encountered in oil field operations. Historical Document 1975
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Concrete is inherently durable – nevertheless, deterioration occurs when subjected to weathering or aggressive environments. For many years, coatings have been applied for aesthetic purposes. In the water and wastewater environment concrete is protected primarily for structural purposes. The increasing use of steel reinforced concrete in modern day construction has led to a growing demand for concrete being structurally protected in all types of industry.
High performance protective coatings are often failing in the severe headspace environments of wastewater environments. These failures are attributed to many factors including glow permeability properties to resist H2S and other corrosive gasses present within these environments. Although the chemical and physical properties of coating systems can be determined in the lab, this is not the case for application variables and the effects of environmental factors.
As wastewater treatment processes have improved and collection systems are tightened to prevent infiltration, the corrosive nature of the wastewater environment has dramatically increased.
DOWNLOADABLE HISTORICAL DOCUMENT-Corrosion control of prestressed concrete cylinder pipe (PCCP) through the application of cathodic protection (CP). New or existing buried pipelines- with or without a supplemental coating.
There are several design factors that need to be considered when specifying coatings in water and wastewater concrete structures. Issues include treating surfaces with exposed aggregate, with a low pH, and exposed reinforcing steel. This paper will present three examples of important design considerations based on field experiences that can avert lining performance problems and impacts on a project schedule or budget. Specific examples from a number of projects will be used to illustrate these design considerations.
This paper will provide information on the standards used in evaluating and determining correct application and selection of protective coatings and linings used in the wastewater industry. It will also highlight certification that can be used in evaluating contractors and inspection companies used in the coating and lining process.
The Use of Ultra-High Build, Fast Return to Service Coatings on Concrete Structures to Shorten the Construction Schedule at the Expansion of the Norman, OK Wastewater Treatment Plant.
Through the course of any project, communication is the key element for success. In the coatings industry, a lack of communication by project stakeholders can show up in a very short time following project completion. This can be in the form of premature failures, shorter equipment service life, etc. We have found that this gap in communication often exists on the planning and implementation side of wastewater treatment projects. As professionals we have a tendency to hear, but not listen.
The wastewater industry embraces “going green” but it is not just about the latest and greatest VOC compliant products on the market. Green starts with advanced coatings technology and the knowledge and support of the industry professionals from design to completion and beyond.
This presentation briefly updates a two-part article printed in Water Engineering & Management in 2001. It begins with the benefits of waterborne coatings and gives examples of where they may be used.