As the phase-down of F-gas refrigerants continues to accelerate worldwide, CO2 technology has become an increasingly popular option utilised in the industrial refrigeration sector.

The IIAR, in its continuing mission to promote the safe and sustainable use of natural refrigerants, has produced a new ANSI approved standard specifying minimum requirements for the safe design, safe installation, start-up, and inspection, testing, and maintenance (ITM) of closed-circuit carbon dioxide refrigeration systems and any modifications or additions to an existing system.
The content of this standard includes:
- Part 1 General Information
- Part 2 Design Consideration Affecting Construction
- Part 3 Installation
- Part 4 Start-up of New Systems and Additions or Modifications to Existing Systems
- Part 5 Inspection, Testing and Maintenance
- Part 6 Appendices
For more information and to purchase this standard, click here.
Members benefit by a reduced fee. IIAR standards represent industry consensus and are subject to a rigorous public review process.