Let your voice be heard! The upcoming IIAR 9 standard will be the “fallback” RAGAGEP for older systems. Unfortunately, this is another partial PDF, so you will have to have the earlier Public Review documents to make sense of it.


June 21st, 2019
To: IIAR Members
Re: Third (3rd) Public Review of Standard BSR/IIAR 9-201x, Standard for Minimum System Safety Requirements for Existing Closed-Circuit Ammonia Refrigeration Systems.
A third (3rd) public review of draft standard BSR/IIAR 9-201x, Standard for Minimum System Safety Requirements for Existing Closed-Circuit Ammonia Refrigeration Systems is now open. The International Institute of Ammonia Refrigeration (IIAR) invites you to make comments on the draft standard. Substantive changes resulting from this public review will also be provided for comment in a future public review if necessary.

BSR/IIAR 9-201x, specifies the minimum system safety requirements applicable to existing closed-circuit ammonia refrigeration systems. It presupposes that the persons who use the document have a working knowledge of the functionality of ammonia refrigeration system(s) and basic ammonia refrigeration practices and principles. This standard is intended to provide a method for existing ammonia closed-circuit refrigeration systems to evaluate and document new and revised codes, standards, and practices to determine what provisions within these codes, standards, and practices to adopt. This standard shall apply only to stationary closed-circuit refrigeration systems utilizing ammonia as the refrigerant. It supplements existing general refrigeration standards issued by IIAR and other organizations such as ASHRAE, ASME, and ANSI. It is not intended to supplant existing safety codes (e.g., model mechanical or fire codes).

IIAR has designated the draft standard as BSR/IIAR 9-201x. Upon approval by the ANSI Board of Standards Review, the standard will receive a different name that reflects this approval date.

We invite you to participate in the third (3rd) public review of BSR/IIAR 9-201x. IIAR will use the American National Standards Institute (ANSI) procedures to develop evidence of consensus among affected parties. ANSI’s role in the revision process is to establish and enforce standards of openness, balance, due process and harmonization with other American and International Standards. IIAR is the ANSI-accredited standards developer for BSR/IIAR 9-201x, and is responsible for the technical content of the standard.

This site includes links to the following attachments:


The 30-day public review period will be from June 21st, 2019 through July 21st, 2019. Comments are due no later than 5:00 pm Eastern Standard Time (EST) on July 21st, 2019.