Fourth (4th) Public Review of
Standard BSR/IIAR 9-201x
Standard for Minimum System Safety Requirements for Existing Closed-Circuit Ammonia Refrigeration Systems

Background Information

The proposed standard, BSR/IIAR 9-201x, is intended to provide the minimum system safety requirements applicable to existing closed-circuit ammonia refrigeration systems. This proposed standard reflects the input received and consensus thereof from ammonia refrigeration industry practitioners for inspection, testing, and maintenance requirements. This proposed standard is not intended to serve as a comprehensive technical design, operation, or maintenance manual and shall not be used as such.

This proposed standard provides a method for existing stationary closed-circuit refrigeration systems using ammonia as the refrigerant to evaluate and document new and revise codes, standards, and practices to determine what provision within these codes, standards, and practices to adopt. This standard also provides a method for determining and documenting existing equipment designed and constructed in accordance with codes, standards, or practices that are no longer in general use is inspected, tested, maintained, and operated in a safe manner. Additional precautions may be necessary because of particular circumstances, project specifications, or other jurisdictional considerations.

This proposed standard is directed towards the safety of persons and property on or near the premises where the refrigeration systems are located. 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).

This proposed standard has been approved by IIAR's Board of Directors for public review. It includes direction for the minimum system safety requirements for existing closed-circuit ammonia refrigeration systems.

This fourth (4th) public review of the proposed standard will be conducted from September 20th, 2019 through October 20th, 2019. Comments must be submitted to IIAR no later than 5 pm Eastern Standard Time (EST) on October 20th, 2019. Click here for a copy of the public review draft in electronic (pdf) form.

Copies will also be provided by fax or mailed upon request. Click here for the on-line request form, or click here to download a pdf file of the request form.

American National Standards Institute (ANSI) procedures will be utilized to develop evidence of consensus for this proposed standard. IIAR is the ANSI-Accredited standards developer for BSR/IIAR 9-201x. Individuals, organizations, companies, government agencies, standards developers, etc., who are directly and materially affected by the proposed standard are invited to participate in the public review.


Letter to IIAR Members | Background Information | Public Review Announcement
Public Review Draft | Online Comment Form