Recent Blog Posts

IIAR Achieves a Mechanical Code Milestone

October 13th, 2020

On March 6, 2020, the International Code Council published the 2021 edition of the International Mechanical Code (IMC). 2021 IMC includes a noteworthy change that all ammonia refrigeration industry stakeholders should celebrate. Instead of including prescriptive requirements for ammonia refrigeration systems in Chapter 11, as previous editions had done, §1101.1.2 now requires that “Refrigeration systems […]

Valve Exercising and IIAR 6

September 29th, 2020

Ammonia refrigeration systems are typically configured with hundreds of valves that require maintenance to help ensure that they will function properly when adjusted from their normal position. ANSI/IIAR 6-2019 Standard for Inspection, Testing, and Maintenance of Closed-Circuit Ammonia Refrigeration Systems includes the minimum requirements for valve inspection, testing, and maintenance (ITM) in Table 11.1.6. Concerning […]

Differences Between IIAR Standards 2 and 9

September 15th, 2020

Earlier this year, IIAR published ANSI/IIAR 9-2020 Standard for Minimum System Safety Requirements for Existing Closed-Circuit Ammonia Refrigeration Systems. While it has long been recognized that new systems must adhere to the requirements of IIAR Standards 2 and 4, facilities with existing systems have often been confused on how they should relate to these standards. […]

Ammonia Week in Review | August 28, 2020

August 28th, 2020

20 Indian dairy workers are hospitalized after an ammonia leak in this week’s edition of the Ammonia Week in Review… 20 in Hospital after Ammonia Gas Leak in Andhra Pradesh – About 20 workers, including 14 women, were hospitalised following an ammonia gas leak from a private dairy unit in Andhra Pradesh’s Chittoor district on Thursday night, […]

IIAR 9 Chapter 7, Section 7.4 (IIAR 9, Part 6)

August 4th, 2020

Watch this overview of chapter 7, section 7.4 from the new standard for existing ammonia refrigeration systems by Peter Thomas: