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 […]

Update on Ammonia Diffusion Tanks

September 5th, 2017

Since 1994, jurisdictions which adopted the Uniform Mechanical Code (UMC) have required ammonia refrigeration systems to be equipped with a diffusion tank to which all pressure relief valve discharge pipes must terminate. As a state, California has adhered to the California Mechanical Code (CMC) which is a derivative of the UMC. The most recent version […]