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Updated On: July 23, 2012
This standard practice provides format, content, and guidelines for developing a materials selection diagram (MSD). A MSD documents the materials selection of new equipment and piping for the refinery, process chemical, power, and other industries. The scope of this standard is to define the minimum and optional information to be included on the MSD, provide recommended formats, and give guidance on key issues that arise when materials are selected. This standard does not define how to evaluate specific corrosion and materials degradation mechanisms or how to select materials for specific processes, and it is intended for use by the owner/operators, licensors, and the contractor/fabricators of petroleum refineries, process chemical plants, power plants, and other industrial processing plants.