We’ve written about NFPA 704 placards on ammonia refrigeration systems in the past, but it seemed timely to provide an update since ANSI/IIAR 2-2021 was recently published and includes a noteworthy change in the minimum requirements. What’s the Same? The 2021 version of Standard 2 still requires that an NFPA 704 placard be affixed to […]
IIAR Bulletin No. 114 has been an important resource for the ammonia refrigeration industry since the early 1990’s. In the 2021 edition of IIAR Standard 2, the entirety of Bulletin No. 114 is incorporated as informative Appendix Q. This means that IIAR’s guidance on ammonia refrigeration labeling will no longer be available through a standalone […]
In the 2008 edition of Standard 2, IIAR first addressed the topic of emergency pressure control systems (EPCS). Prior to the publication of ANSI/IIAR 2-2021 earlier this year, each subsequent publication of Standard 2 has offered commentary on the subject of EPCS in an informative appendix. ANSI/IIAR 2-2021 §15.6 is the first instance of EPCS […]
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 […]
Uriah Donaldson, OHST, presented a technical paper at the 2019 RETA National Conference and 2021 IIAR National Conference titled RAGAGEP: Historical Variants and the Importance of IIAR Standards. This is the eighth and final post in a series of blogs which include excerpts from his technical paper. Summary and Conclusion Recognized and Generally Accepted Good Engineering Practices […]
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