Materials being considered for use in or to contain aqueous media in high pressure steam plants or water-cooled nuclear reactor plant systems require a measure of the rate of general corrosion under the anticipated environmental conditions. Pilot plant data are usually obtained by exposing test materials to simulated environmental conditions for various lengths of time. The general methods used for test may be similar, but techniques and procedures usually vary widely. The lack of standardized test methods for high temperature water corrosion testing results in data which are not always comparable or of limited utility because of differences in testing techniques, methods of analyses, or deficiencies in the reporting of results. This lack of uniformity in corrosion testing prompted NACE Unit Committee T- 7D on High Purity and Power Plant Water to make this standard method of test available to increase the utility and reliability of high temperature aqueous corrosion data. The Standard is also intended to aid users of such data by indicating how the data were obtained and the possible limitations for applicati0n to selection of materials or environmental conditions for high temperature water systems. The method described herein is intended primarily for the evaluation of metals used for structural components and for containment of aqueous solutions.

This Standard was prepared by NACE Unit Committee T-7D on High Purity and Power Plant Water and its Task Group T-7D-14. Before completion of this document, Unit Committee T-7D was designated as Unit Committee T-1 IA on High Purity and Power Plant Water under NACE Group Committee T-11 on Thermal Power Generating Corrosion.

Historical Document 1974