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 first post in a series of blogs which include excerpts from his technical paper. Introduction Recognized and Generally Accepted Good Engineering Practices (RAGAGEPs) are written […]
We recently published a blog addressing various aspects of ANSI/IIAR 4-2020. On the topic of pipe supports, Standard 4 introduces a prohibition that was not previously included in the 2015 edition. ANSI/IIAR 4-2020 §6.1.2 requires that “Piping support systems shall be installed to retain pipe within the support. Pipe shall not be welded to supports […]
Last year IIAR published a new edition to Standard 8 Decommissioning of Closed-Circuit Refrigeration Systems. ANSI/IIAR 8-2020 contains many of the same minimum requirements as the 2015 edition, but as always, there are a few nuances worthy of our attention. First, let’s get the big picture of Standard 8. Overview of Standard 8 Standard 8 […]
IIAR’s suite of standards addresses the minimum requirements for ammonia refrigeration systems from design through decommissioning. Standard 7 is unique in tackling the development of operating procedures for these systems. The publication is titled Developing Operating Procedures for Closed-Circuit Ammonia Refrigeration Systems and was most recently updated in 2019. To better understand the function of […]
Last year, IIAR published a new edition of Standard 4 Installation of Closed-Circuit Ammonia Refrigeration Systems. We’ve spent considerable time familiarizing with this document and have distilled key themes into eight things you should know about Standard 4. 1. Install the system in accordance with its design. Remember the equipment layouts, elevation drawings, and piping […]
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