Corrosion testing, necessary apparatus

Process fluids may be used for hydrostatic testing in some special cases, but water is the almost universal choice. The quality of the water is an important consideration. Residues from hydrostatic testing often lead to corrosion. Chloride ions in the water are frequently a problem in apparatus or piping that is vulnerable to stress corrosion. Scrupulous removal of test water may be important for this reason or may be necessary because of interactions of water or rusted surfaces with process fluids. 

The corrosiveness of combustion products has been considered in a variety of ways [70-72] in relation to actual fire damage as well as large-scale experiments. Electric insulation studies have been carried out [70-72] using the combustion tube apparatus to provide the data necessary for standards work. DIN EN 50267 [73-76], Section 813, provides information concerning test and performance criteria for the determination of the corrosiveness of combustion products from fires of electric origin [73-76]. 

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