Accelerate America #34, April 2018

Page 46

46 // Technology

PAVING THE WAY FOR LOW-CHARGE AMMONIA IIAR creates guidelines to help introduce the technology to more end users and enable them to install and operate it correctly – By Mark Hamstra

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s more businesses consider replacing their conventional refrigeration systems with lowcharge ammonia technologies, they are increasingly seeking information about what such a switch entails. The International Institute of Ammonia Refrigeration (IIAR) is seeking to meet that demand with new guidelines designed to help users safely install, operate and maintain ammonia refrigeration systems that use a charge of 500 lbs or less (and under 100 lbs in the next step). These guidelines, called Ammonia Refrigeration Management - Low Charge (ARM - LC), are a scaled- down version of the ARM guidelines the IIAR had previously issued for ammonia systems using charges under 10,000 lbs. The overarching goal of the ARM-LC guidelines is to help end users comply with the General Duty Clause of the Occupational Safety and Health Act, which requires that a place of employment be “free from recognized hazards.” Peter Thomas, president and senior engineer, Resource Compliance Inc., and the author of the ARM-LC guidelines, outlined the document at the IIAR 2018 Conference & Expo in Colorado Springs, Colo., last month. The guidelines are currently being reviewed before final publication, which is expected to occur by the end of the year. The good news for operators seeking to convert to low-charge ammonia refrigeration is that, under ARM-LC, equipment manufacturers and contractors will likely shoulder most of the work involved in the

Kurt Liebendorfer, Evapco Accelerate America // April 2018