Recent Blog Posts

IIAR 2-2021: Can Hoses Be Permanently Installed in an Ammonia Refrigeration System?

July 26th, 2022

Hoses are used for a variety of purposes in ammonia refrigeration. Often with equipment that is designed to be moved, a corrugated metal hose is used to connect the portable portion of the system to permanent equipment. IIAR standards had been silent on this issue until the recent publication of IIAR Standard 2. ANSI/IIAR 2-2021 […]

Ammonia Week in Review | July 22, 2022

July 22nd, 2022

  Ammonia Leak at National Beef in this week’s edition of the Ammonia Week in Review… Update: Ammonia Leak Reported at National Beef Facility – The officials said the leak was due to a valve failure while the facility was transporting anhydrous ammonia, used for refrigeration, from on-site tanks to trailers. […keep reading] 22-Year-Old Worker Killed at Tyson Foods Plant – Casen Garcia, […]

IIAR 2-2021: Hydrostatic Overpressure Protection Requirements

July 12th, 2022

The 2021 edition of IIAR Standard 2 has improved clarity on the minimum requirements for protecting equipment and piping from hydrostatic overpressure. The term “hydrostatic overpressure” refers to the pressure exerted when trapped liquid is subject to thermal expansion. Common components in ammonia refrigeration systems that may be subject to hydrostatic overpressure include: Oil coolers […]

Ammonia Week in Review | July 1, 2022

July 1st, 2022

    UK Brewery fined $3.6 Million Due to Fatal Ammonia Leak in this week’s edition of the Ammonia Week in Review… Brewer Carlsberg Hit with $3.6M Fine After Ammonia Leak – Beer brewer Carlsberg is facing a £3 million (about $3.6 million) fine after a contactor died and another worker was seriously injured in an ammonia gas […]

IIAR 2-2021: Ammonia Machinery Room Ventilation Requirements

June 28th, 2022

In 2021, IIAR published a new edition of their flagship standard ANSI/IIAR 2 which addresses the requirements for designing a safe ammonia refrigeration system. Machinery room ventilation is one of the many important topics addressed within Standard 2. While the requirements have not changed substantially since the 2014 edition, we have put together this blog […]