power generation, and other industries. Figure 6 provides a view of a severely deteriorated sludge storage tank during repairs Fig. 6 Severely deteriorated sludge storage tank during repairs. A structural epoxy will be applied to the reinforced concrete Courtesy ofs. Paul, CorrTech, Inc. Analysis and Prevention of Corrosion-Related Failures S.R. Freeman, Millennium Metallurgy Ltd Prevention of Corrosion-Related Failures of Metals Following analysis of corrosion failures, corrective actions are recommended to prevent or delay recurrence of failures. The approaches to corrective and preventive actions include Change in the environment Change in the alloy or heat treatment Design change Use of galvanic protection(cathodic protection and anodic protection) Use of inhibitors Use of nonmetallic coatings and liners Application of metallic coatings Use of surface treatments, thermal spray, or other surface modifications Corrosion monitoring Preventive maintenance Change in the Environment. Environmental control can be a complicated task. A complete understanding of the environment is key to changing or treating it. a detailed analysis of the environment should be performed prior to the implementation of any modifications or treatments Safeguards must be put in place to avoid unintended consequences of altering the environment, such as the introduction of a contaminant. In some cases, an environment is subject to seasonal changes such as changes in water quality and temperature Controls must then be seasonally adjusted as well Controlling the ph to lower corrosion rates is a common practice in municipal and industrial water supplies The chemicals that may be introduced are limited for public health reasonspower generation, and other industries. Figure 6 provides a view of a severely deteriorated sludge storage tank during repairs. Fig. 6 Severely deteriorated sludge storage tank during repairs. A structural epoxy will be applied to the reinforced concrete. Courtesy of S. Paul, CorrTech, Inc. Analysis and Prevention of Corrosion-Related Failures S.R. Freeman, Millennium Metallurgy, Ltd. Prevention of Corrosion-Related Failures of Metals Following analysis of corrosion failures, corrective actions are recommended to prevent or delay recurrence of failures. The approaches to corrective and preventive actions include: · Change in the environment · Change in the alloy or heat treatment · Design change · Use of galvanic protection (cathodic protection and anodic protection) · Use of inhibitors · Use of nonmetallic coatings and liners · Application of metallic coatings · Use of surface treatments, thermal spray, or other surface modifications · Corrosion monitoring · Preventive maintenance Change in the Environment. Environmental control can be a complicated task. A complete understanding of the environment is key to changing or treating it. A detailed analysis of the environment should be performed prior to the implementation of any modifications or treatments. Safeguards must be put in place to avoid unintended consequences of altering the environment, such as the introduction of a contaminant. In some cases, an environment is subject to seasonal changes such as changes in water quality and temperature. Controls must then be seasonally adjusted as well. Controlling the pH to lower corrosion rates is a common practice in municipal and industrial water supplies. The chemicals that may be introduced are limited for public health reasons