IIAR recently published an update to the standard for startup of an ammonia refrigeration system. ANSI/IIAR 5-2019 Startup of Closed-Circuit Ammonia Refrigeration Systems is the second edition of this important standard which was first published in 2013. While the scope of the standard has not changed since the first edition, there are several noteworthy changes […]
IIAR Bulletin No. 109 (B109) has been an integral part of ammonia refrigeration vernacular for over 20 years. “B109s” have been the gold standard for annual mechanical integrity inspections since the document was published in 1997. The ten easy to understand checklists which comprise most of the document have served our industry well during this […]
Replacement of pressure relief valves (PRVs) every five (5) years has long been established as RAGAGEP in industry documents (IIAR Bulletin No. 109 and No. 110) and manufacturer literature. ANSI/IIAR 6-2019 ยง13.1.2 introduces an alternative for owners that desire to increase the service life of their PRVs. The alternate test method can extend the service […]
ANSI/IIAR 6-2019 Table 12.5 summarizes the minimum ITM requirements for eyewash and safety showers. We’ve written about tests of eyewash and safety showers in the past, and thankfully IIAR 6 does not introduce any new ITM tasks, but instead repeats the requirements which were previously published in ANSI/ISEA Z358.1-2014. In lieu of copying Table 12.5 […]
In Part 12 of our series on ANSI/IIAR 6-2019 we examined the ITM requirements related to pressure vessel corrosion. While many of the same principles apply, it is fitting to explore unique considerations when inspecting ammonia pipe. Table 11.1 requires non-insulated ammonia pipes to be inspected annually for pitting and surface damage (Inspection Item A). […]
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