What is the standard for equipment and installation of closed-circuit ammonia refrigerating systems revised in 2008?

The standard for equipment and installation of closed-circuit ammonia refrigerating systems that was revised in 2008 is ANSI/IIAR2. This standard, developed by the International Institute of Ammonia Refrigeration (IIAR), specifically addresses the safety requirements and best practices for ammonia refrigeration systems. It covers the design, construction, installation, and maintenance of these systems to ensure safe and efficient operation.

The relevance of this standard lies in the unique properties of ammonia as a refrigerant, including its toxicity and flammability, which necessitate strict safety protocols to protect workers, the environment, and property. ANSI/IIAR2 provides a comprehensive framework that helps to mitigate risks associated with the use of ammonia in refrigerating applications.

The other options, while they relate to various aspects of refrigeration, do not specifically address the standards for ammonia refrigerating systems. ANSI/ASHRAE 15 deals with the safety standard for refrigerants in general, ANSI/ISO 9001 focuses on quality management systems, and ANSI/AHRI 240 is concerned with the certification for certain types of cooling systems but does not specifically address ammonia refrigeration.