Recent Blog Posts

IIAR 6 Appendix B Pressure Vessels Checklist | Part 1

September 5th, 2023

Part 1: This is the first in a series of blogs explaining how to perform an IIAR 6 Appendix B inspection of an ammonia pressure vessel. The checklists contained in IIAR 6 Appendix B are derived from a legacy document named IIAR Bulletin No. 109. For years, the Bulletin 109 checklists, or B109s, served as […]

Video: Compressor Inspection Checklist – IIAR 6 Appendix B

August 22nd, 2023

Check out Resource Compliance’s free video on how to perform an IIAR 6 Appendix B Compressor Inspection Checklist. In this video presented by Resource Compliance, Peter Thomas, P.E. walks you through the steps necessary for completing the compressor checklist found in IIAR 6 Appendix B.  

Video: Overview of Ammonia Refrigeration Air Cooling Evaporators

March 21st, 2023

Check out Resource Compliance’s free video on ammonia refrigeration air cooling evaporators.

Pressure Vessel Inspection Checklist – IIAR 6 Appendix B

February 7th, 2023

Check out Resource Compliance’s free video on completing an IIAR 6 Appendix B Pressure Vessel Inspection Checklist.

Manufacturer Instructions and Ammonia Three-Way Relief Isolation Valves

May 29th, 2018

It is common practice in the ammonia refrigeration industry to install a three-way isolation valve upstream of relief valves protecting an ammonia refrigeration pressure vessel. For vessels larger than 10 ft3, this is required by most model codes and standards. These three-way valves allow a relief valve to be replaced without the hassle of pumping […]