Doc. 149/17 Safe Installation and Operation of PSA and Membrane Oxygen and Nitrogen Generators

Oxygen and nitrogen generators that use pressure swing adsorption (PSA) and membrane technologies, like many present day processes, have some degree of potential hazards that must be recognized and addressed. Common hazards associated with these generators are the asphyxiant risks of oxygen-deficient atmospheres and the ability of oxygen-enriched atmospheres to accelerate combustion. Other hazards include noise, electricity, rotating equipment, and gases under pressure.


This publication gives guidance on the safe location, installation, operation, and maintenance of certain oxygen and nitrogen generators. Included are systems using PSA and membranes for nitrogen production, PSA and vacuum swing adsorption (VSA) for oxygen production, and catalyst-based oxygen removal systems for nitrogen purification.

It is intended to be used by those who are specifying, operating and maintaining such equipment.

The publication is part of the programme to develop Globally Harmonized publications amongst Regional Gas Associations.