Similar to other IIAR standards, ANSI/IIAR 6 Standard for Inspection, Testing, and Maintenance of Closed-Circuit Ammonia Refrigeration Systems is divided into several Parts, with each Part containing multiple Chapters or Appendices. Parts 1-2 are normative, indicating that the content in these sections is mandatory. Part 3 is informative and therefore intended to be descriptive and […]
We’ve often heard the axiom that “patience is a virtue”. For the ammonia refrigeration industry, our patience has finally been rewarded with the publication of ANSI/IIAR 6 Standard for Inspection, Testing, and Maintenance of Closed-Circuit Ammonia Refrigeration Systems. By some estimations, IIAR 6 has been in development for over 13 years[1]. Countless IIAR Standards Committee […]
ANSI/IIAR Standard 6-2019 Inspection, Testing, and Maintenance of Closed-Circuit Ammonia Refrigeration Systems was officially published on May 20, 2019. Bulletins 109 and 110, the IIAR’s previous guidance documents, are now officially retired in lieu of the long-awaited IIAR 6 standard. Gone are the days of “could” and “should”; this standard provides the minimum safety criteria for maintaining […]
Many refrigeration systems installed in California are equipped with a diffusion tank which is designed to receive and mitigate ammonia vapor that is released when a relief valve lifts. Since the common application of diffusion tanks has been limited to the west coast, our industry lacks best practices for sampling diffusion tank water for the […]
Within the Mechanical Integrity (MI) paragraph of the PSM regulation (Title 8 §5189(j)), facility owners are required to “establish and implement written procedures to maintain the ongoing integrity of process equipment”. Inevitably, compliance with the requirements of this paragraph will require a schedule to be developed which describes the frequency that inspection, testing, and maintenance […]
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