Erosion-corrosion cautions

When combating erosion-corrosion by changing tube metallurgy, caution must be exercised to ensure appropriate tube and baffle spacing so that vibration-associated cracking problems are not introduced. 

It is important to apply caution to any elecflochemical measurement under erosion-corrosion conditions. Other issues that make electrochemical analysis and its comparison to synergy difficult include the possibility of local film currents between anodes/cathodes... 

Materials selection plays an important role in minimizing erosion corrosion damage. Caution is in order when predicting erosion corrosion behavior on the basis of hardness. High hardness in a material does not necessarily guarantee a high degree of resistance to erosion corrosion. 

In normal operation, caution should be exercised to prevent liquid from forming during the expansion cycle in reciprocating expanders. Liquid in the expansion space can cause both erosion and corrosion of the equipment. Serious mechanical problems can also arise if any liquid freezes out in the expander cylinder. Care should therefore be taken to avoid expansion of the gas into the vapor-liquid and triple point regions of the refrigerant. 

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