A sixth public review of draft standard IIAR 5-201x, Start-up and Commissioning of Closed-Circuit Ammonia Mechanical Refrigerating Systems is now open for public review of the substantive changes resulting from the fifth public review. The International Institute of Ammonia Refrigeration (IIAR) invites you to make comments on the substantive changes of the draft standard. Substantive changes resulting from this public review will also be provided for comment in a future public review if necessary. The 45-day public review period will be from November 2 to December 17, 2012. Comments are due no later than December 17, 2012. Public Review Draft, On-line Comment Form for BSR/IIAR 5-201x