FLUSHING (that is cleaning with a copious flow of liquid, usually lubricating oil) is a successful method of clearing circulating systems, such as those of steam turbo‐generators, of impurities; those associated with new installations or those which accumulate in service. This is because as a general rule only relatively light bodied oils are used as lubricants for this type of industrial machinery and again because the contaminants themselves are only loosely bound to the metal surfaces of the system components.
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