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  • IIAR | Safe and Sustainable Use of Natural Refrigerants
    IIAR is a technical member organization with industry representation from all facets of the natural refrigeration community, including manufacturers, engineers, contractors, end-users, academics, scientists, trainers, and more
  • Home - IIAR
    IIAR is the world’s leading advocate for the safe, reliable, and efficient use of ammonia and other natural refrigerants as well as an ANSI-accredited standards developer IIAR is currently the only organization writing design and operation standards specifically for ammonia and other natural refrigeration systems
  • IIAR - International Institute of Ammonia Refrigeration - Standards Portal
    IIAR is currently the only organization writing performance standards for ammonia refrigeration systems IIAR has two standards in publication, ANSI IIAR 2-1999, Equipment, Design, and Installation of Closed-Circuit Ammonia Mechanical Refrigerating Systems and ANSI IIAR 3-2005, Ammonia Refrigeration Valves
  • IIAR Standards
    IIAR Standards are ANSI approved so they are subject to a rigorous public review process to ensure that they represent an industry consensus IIAR Standards set the industry standard and are a must-have technical resource to ensure a safe and efficient industrial refrigeration operating environment For more information on IIAR Standards click
  • IIAR Education
    The IIAR Basic Ammonia Refrigeration training program is a complete package of online instructional Videos and Tests to document employee training Each module takes a step-by-step approach to fundamental ammonia refrigeration principles, applications, and components
  • IIAR Standards and Guidelines for Ammonia and CO2 Refrigeration
    ASHRAE 15 includes a reference to IIAR standards for ammonia refrigeration design Parts 1-3 contain normative material Introductory sections and Part 4 (Appendices) contain informative material Appendix A contains explanatory information for specific normative sections marked with an asterisk
  • Members receive significant discounts when purchasing IIAR publications.
    IIAR publishes Regulatory Guidelines that address compliance issues and rule interpretations for Process Safety Management and Risk Management IIAR Bulletins provide technical guidance addressing topics such as good practices, safety procedures and information, operating procedures, water contamination, machinery room ventilation and others
  • IIAR 9 Standards for Industrial Ammonia Refrigeration Systems
    The IIAR 9-2020 Standard details specific requirements that facilities need to meet It’s up to facility owners to understand these requirements and apply them to their current system, identify gaps, and put a plan in place to mitigate those issues
  • Mapping Global Standards for Industrial Refrigeration: IIAR’s . . .
    In 2023, the IIAR International Committee launched a far-reaching research initiative to catalog the standards and codes governing industrial refrigeration systems, especially those using ammonia and other natural refrigerants —across key international markets
  • Understanding IIAR’s Ammonia Refrigeration Safety Standards
    The International Institute of Ammonia Refrigeration (IIAR) has developed comprehensive safety standards that are essential for any facility using ammonia as a refrigerant The IIAR’s safety standards cover a wide range of topics, including system design, installation, operation, and maintenance





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