Chapter - 1
MNL000440.doc
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09/19/2016
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and safe practices for these systems should be permitted to operate and maintain
the system.
Use only equipment specifically designed for oxygen or oxidizer
service.
Inappropriate materials of construction increase the danger of ignition of
pipelines and controls. Pipe sizing is just as important to ensure all velocity
restrictions for oxygen or oxidizers are met. Do not substitute components or
equipment without considering these hazards. Refer to CGA Pamphlet G-4.4 for
guidelines and specifications of oxygen systems. (Contact your gas supplier or
the Compressed Gas Association to order CGA Pamphlets.)
Maintain oxygen cleanliness at all times.
All equipment and piping in contact with oxygen or oxidizers must be cleaned to
specifications outlined in CGA Pamphlet G-4.1. (Contact your gas supplier or
the Compressed Gas Association to order CGA Pamphlets.) Failure to clean
components and piping increases the danger of ignition and fire. Note that the
cleaning solvent must be thoroughly removed before the equipment can be placed
into service. Maintain cleanliness during assembly, installation, and repair.
No open flames, smoking, or sparks permitted near oxygen
equipment.
Since many materials will burn in oxygen/oxidizer enriched atmospheres, the best
method in preventing fires is to eliminate sources of ignition. Where this control
equipment is being used or where concentrations of oxygen are greater than 23%,
avoid open flames, sparks, or sources of heat. Never weld on a pressurized line
flowing oxygen or an oxidizer. Make sure signs are posted warning personnel that
oxygen or oxidizers are in use.