The Official Magazine of the All-Natural Refrigeration Industry

The Natural Refrigeration Review is a quarterly publication that contains technical articles, regulatory and code updates, industry news and information about IIAR activities and publications. It is distributed by email to all IIAR Members and IIAR Contact lists.

SUMMER 2026 THE NATURAL REFRIGERATION REVIEW

The Natural Refrigeration Review issues are available as PDF downloads for both lIAR members and non-members, or as individual article posts below. Click the button to view the full issue, or scroll through all the individual issue articles below.

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IIAR-2 Updates Address Detection, Ventilation and More

The International Institute of Ammonia Refrigeration has released the latest version of IIAR-2, which covers the design of safe closed-circuit ammonia refrigeration systems. IIAR-2 was first released in 1974 and received its last major update in 2015.

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EPA Grants IIAR’s Petition for Increased Hydrofluorocarbon Restrictions

The Environmental Protection Agency has granted a petition from the International Institute of Ammonia Refrigeration and its industry partners to use the agency’s authority under the American Innovation and Manufacturing Act to restrict the use of hydrofluorocarbons within the refrigeration sector.

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CO2 Standard Provides Guidance on Growing Segment of the Industry

The International Institute of Ammonia Refrigeration has released its safety standard for CO2 closed-circuit systems. The standard covers all phases of the CO2 system lifecycle, from design, installation, and start-up to inspection, testing, and maintenance. It encompasses the CO2 portion of a cascade system, systems using CO2 as a secondary fluid, systems operating part- or full-time in the transcritical cycle, and heat pumps.

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IIAR Releases Critical Task Guideline

The International Institute of Ammonia Refrigeration (IIAR) has recently published the first edition of a new guideline titled “Critical Task Guidance for Ammonia Refrigeration System Emergency Planning.”

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As HFCs are Phased-Down, Disincentives for Ammonia Must be Avoided

With the passage and ongoing implementation of the American Innovation and Manufacturing (AIM) Act at the federal level, some states are also taking actions to phase down hydrofluorocarbons (HFCs). As policymakers move away from HFCs, it is also important that ammonia policies be kept in an appropriate balance, to avoid unintended consequences of policies that may serve as disincentives for facilities to move to natural refrigerants.

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Improving PHAs With Sample-Safeguards Checklists

For many ammoniarefrigeration systems, a what-if/checklist processhazard analysis (PHA), with brainstorming about unique situations enhanced by a comprehensive safeguards checklist, provides a robust method for identifying hazards, analyzing risks, and developing any needed recommendations.

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Bitcoin: Fad or The Future?

If someone told you about an investment that has made some people millionaires overnight and has both several high-profile supporters and a global reach, would you be tempted to invest? If you were then told that the same investment also could lose most or all of its value almost overnight, and you might not have access to your money when you need it, how would it sound now?

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Ready? Really Ready?

Having a well-thoughtout and functional emergency plan can be challenging. I have seen some very good emergency plans, but I have also noticed that several plans are not as complete as they could be. This seems to be a tough lesson to learn, and you may have experienced this. Let me start with an example of a conversation similar to what I have heard many times, and then give some considerations for improving an emergency plan.

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IIAR Participates in Coalition Amicus Brief to the Court Regarding Release Investigations

The Occupational Safety and Health Administration (“OSHA”) is appealing to the U.S. Court of Appeals for the Eleventh Circuit a recent decision by the Occupational Safety and Health Review Commission (“OSHRC”), and an administrative law judge that favored the Tampa Electric Company (“TECO”). The case surrounds actions that TECO performed when responding to a release of ammonia that occurred at a power generating facility.

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President’s Message by Dave Rule

Looking at the rich and exciting program for our association’s 2020 annual conference in Orlando, I see an extraordinary palette of achievements by IIAR members over the past several years. While this will be my last conference as IIAR president, I am proud of our members’ accomplishments, which form a strong foundation for further growth and continuing efforts that will broaden the applications of natural refrigerants both in the familiar industrial setting and in the expanding retail commercial sector.

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Hawaii and Energy Efficiency

Mark Twain once wrote that Hawaii was “The loveliest fleet of islands that lie anchored in any ocean.” I first visited Hawaii just a few years after the world had experienced its second “energy crisis”. In 1979 the Iranian Revolution had disrupted the world’s oil supply and overnight the price of oil doubled to $39.50 per barrel.

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IIAR TECHNICAL PROGRAM UNITES INDUSTRY

One of the most interesting and important programs at the IIAR annual conference in Orlando is the presentation of technical papers. At this year’s conference, industry experts from both the industrial and commercial sides of the business will present technical papers at the IIAR Technical Program.

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India Eyes IIAR Standards, Other International Efforts See Success

While much of the efforts of IIAR’s International Committee in the past few years have been focused on Latin America, the committee recently began activities to develop contacts and influence in India

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IIAR Says Goodbye to Longterm President Dave Rule

Dave Rule began his long and esteemed career in the industrial refrigeration industry by way of obtaining his first job in none other than the truck manufacturing industry. His first job gave him a quick education and a good understanding of steel fabrication and working in manufacturing. All skills he would soon apply to his next challenge. Dave quickly transitioned from the truck manufacturing industry to the industrial refrigeration industry as an employee with Baltimore Aircoil (BAC). He came in as a material controls assistant and quickly grew to a lead position in sales and technical support.

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IIAR Membership Advances Industry with Committee Work

The past year was a productive one for IIAR’s numerous committees. From in-depth technical research to international outreach, IIAR’s membership has been busy advancing the industry. Here’s a detailed catalog of each committee’s activities, and what they hope to address in the next year and beyond.

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Welcome to the 2020 IIAR Natural Refrigeration Conference & Exhibition!

It is my pleasure to welcome all of you to the 2020 IIAR Natural Refrigeration Conference and EXPO here in Orlando. Your IIAR Staff and Executive Committee have worked very hard to provide you with the largest technical program ever offered at an IIAR conference along< with many opportunities to network with all of your IIAR friends and colleagues.

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IIAR Unveils New Energy and Sustainability Committee

Amid a high level of interest from members, IIAR’s newly established Energy and Sustainability Committee will have its inaugural meeting at this year’s annual conference in Orlando. At last year’s IIAR Annual Conference, after much discussion and deliberation, the IIAR chairman appointed a task force to investigate the needs of the industry’s enduser community with regards to energy and sustainability in their facilities, said Bruce Nelson, speaking on behalf of the committee.

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Foundation Founders Scholarship Program Sees Continued Growth

Since its introduction in 2016, the Ammonia Refrigeration Foundation’s Founders Scholarship has helped connect talented young people to the world of natural refrigerants by awarding students who exhibit exceptional character, academic prowess and a healthy interest in pursuing an engineering or related technical degree with financial and professional assistance.

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What? I didn’t know that

I recently read an article about a man that spent a considerLESSON able amount of time tromping through the wilderness back in the early 1900s. In his journa he made a statement that I found interesting. He wrote, “I don’t know where I am, but it doesn’t matter.” I am concerned when someone doesn’t know where they are or what is going on, and they think it “doesn’t matter.” I think it can matter a lot where you are, and what you know when you are there.

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CSB Establishes New Chemical Incident Reporting Rule

On February 5, 2020, the Chemical Safety and Hazard Investigation Board (CSB) released its Final Rule on accidental chemical release reporting. The rule creates a new reporting requirement for facilities that experience a chemical release. The enabling legislation that established the CSB included a requirement that the agency develop a reporting mechanism to help identify incidents that warrant CSB investigation.

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