scope:

The cleaning methods described in this pamphlet are intended for cleaning equipment used in the production, storage, distribution, and use of liquid and gaseous oxygen. Examples of such equipment (illustrative of the primary intent of this publication) are: stationary storage tanks, cargo tankers, and tank cars; pressure vessels such as heat exchangers and rectification columns; and associated piping, valves, and instrumentation. The cleaning methods, however, are not limited to the above equipment and, with proper consideration or modification, may be utilized in cleaning other oxygen service equipment such as cylinders, cylinder valves, regulators, welding torches, pipelines, compressors and pumps.

Note-CGA C-10, Recommended Procedures for Changes of Gas Service for Compressed Gas Cylinder, includes the conversion of cylinders to oxygen service [1].¹ Where the requirements for this conversion differ from the recommendations of CGA G-4.1, the recommendations of CGA C-10 should take precedence.

¹ References are shown by bracketed numbers and are listed in order of appearance. See Section 14, References.