Recent Blog Posts

Should I Hire a Contractor or Keep it In-House? | Part 12: Conclusion

January 10th, 2022

Eli Macha presented a technical paper at the 2021 RETA National Conference titled IIAR 6: Should I Hire a Contractor or Keep it In-House? This blog series includes excerpts from his technical paper. The aim of this [blog series] was to help end-users of ammonia refrigeration systems comply with IIAR 6 utilizing the right amount […]

All Good Things Must Come to an End: How to Decommission Ammonia Systems According to ANSI/IIAR 8-2020

January 4th, 2022

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 […]

Eight Things to Know About ANSI/IIAR 4-2020

December 14th, 2021

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 […]

Calculating Threshold Quantity for Chemicals with Concentration Qualifiers

November 30th, 2021

Title 40 CFR §68.130 contains the table of RMP chemicals and their corresponding threshold quantities. Of the seventy-seven substances listed, four contain a concentration qualifier: Ammonia (conc 20% or greater) Hydrochloric acid (conc 37% or greater) Hydrogen fluoride/Hydrofluoric acid (conc 50% or greater) Nitric acid (conc 80% or greater) What does the concentration qualifier mean? […]

Auditing Elements: RMP Submit & Hazard Assessment (Part 11)

November 16th, 2021

In this compliance audit blog series, we have decided to focus on each program element. If you plan to lead an audit, these lists will be instructional for you. But if you want to prepare for an upcoming audit, these lists will give you an idea of what to expect. Auditing the RMP Submit and […]