Purpose, Scope, and Applicability (IIAR 6, Part 3)

Chapter 1 of ANSI/IIAR 6 Standard for Inspection, Testing, and Maintenance of Closed-Circuit Ammonia Refrigeration Systems addresses the Purpose, Scope, and Applicability of the standard.

According to §1.1, the purpose of IIAR 6 is to specify “minimum requirements for inspection, testing, and maintenance for closed-circuit ammonia refrigeration systems”. Notice that there are no qualifiers for large or small systems, but rather this succinct statement captures all types and sizes of ammonia refrigeration systems.

The scope of the standard is clarified in §1.2 to encompass record keeping, inspection, testing, and maintenance of both ammonia refrigeration systems and their ancillary equipment. The standard is written to address “equipment that is common to stationary closed-circuit ammonia refrigeration systems”, but it is expected that most systems will not include each type of equipment that is listed in the standard. In other words, if a system does not have a specific type of equipment referenced in the standard, they need not comply with the corresponding section.

The scope of the document is limited in §1.3 by making clear that start-up and decommissioning need not comply with this IIAR 6 and instead must be conducted in accordance with IIAR Standards 5 and 8 respectively. Additionally, IIAR 6 does not apply to ammonia absorption systems containing 22 lbs or less.

This is Part 3 of a series on IIAR 6. You can access previous blogs in this series below:

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