A first (1st) public review of draft standard BSR/IIAR 2-201x, Safety Standard for Equipment, Design, and Installation of Closed-Circuit Ammonia Mechanical 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 2-201x specifies the minimum safety criteria for equipment, design, and installation of closed-circuit ammonia refrigeration systems.