One such equipment type is heat exchangers, especially when those heat exchangers are part of a preheat system.
Heat exchanger cleaning programs are important in maintaining the performance of heat recovery systems, notably crude unit preheat trains in refineries.
Refinery management is becoming increasingly sophisticated in this area, with both improved cleaning techniques and better tools for assessing appropriatecleaning intervals for the heat exchangers in the circuit, as discussed in Chapters 11 and 12.