It has been a year and half since we last addressed eyewash and safety showers on our blog. With the publication of ANSI/IIAR 2-2021 it is prudent to examine the latest design requirements for these important safety units at ammonia refrigeration facilities. Summary of requirements in ANSI/IIAR 2-2014 Before looking at the 2021 edition of […]
Raley’s installs their first supermarket ammonia system in preparation for the California’s Air Resources Board regulations in this week’s edition of the Ammonia Week in Review… Raley’s Unorthodox Ammonia/CO2 System – Installed at its first Raley’s supermarket, the system is the California chain’s answer to impending state regulations capping the GWP of refrigerant at 150. […keep reading] Differences […]
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. […]
ANSI/IIAR 2-2014 Addendum A Chapter 4 Location of Ammonia Refrigeration Machinery, prescribes the acceptable locations for installing ammonia refrigeration equipment. In general, it is expected that equipment will be installed inside a machinery room, but four alternatives are permitted. Exception 1 – Listed Equipment 4.2.1 allows listed equipment containing not more than 6.6 lbs of ammonia […]
The term “shunt trip” is often used in discussions regarding an ammonia refrigeration machinery room e-stop. Technically speaking, a shunt trip is a device that is designed to trip a circuit breaker remotely. In the context of an ammonia refrigeration system, the shunt trip would be located outside the machinery room so that all power […]
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