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Ammonia Use
Ammonia is one of the most commonly manufactured bulk chemicals in the world. Widely used in fertilizers, plastics, refrigeration, metallurgy, explosives and household products, Ammonia is a toxic, highly reactive, and corrosive gas. Spills and releases pose a significant threat to workers from skin contact, inhalation, fire and even explosion. Ammonia, occurs naturally in nature and does not damage the environment (Ozone depletion) as Halocarbon Refrigerants do. Ammonia refrigeration is very energy efficient and is the workhorse for processing and bottling in Dairy operations, Wineries, Breweries, Fruit and Vegetable juice production, and Soft Drinks.

Ammonia Hazards
Accidental releases of ammonia from refrigeration facilities have resulted in both injuries and deaths to employees, caused from contact with both liquid and vapor forms of Ammonia. Because refrigeration systems operate at elevated pressures, additional care and monitoring must be observed to maintain and operate these systems in full compliance with safety standards.

Safety Standards

Ammonia is a colorless gas or compressed liquid with an extremely pungent odor. It reacts violently with water and can seriously damage the skin, eyes and respiratory system. The gas has a density of 0.6 relative to air (1.0) and is flammable above 15% by volume in air¹ and has an IDLH⁹ of 300ppm. The major Standard and Law for Ammonia Refrigeration is ANSI/ASHRAE 15-2004, Safety Standard for Refrigeration Systems, and OSHA 29 CFR 1910.119, Process Safety Management. Various government and public agencies have set mandatory and voluntary airborne hazard exposure standards for Anhydrous Ammonia.

Ammonia Detection
Factory Mutual tests, performance certifies and approves low PPM gas detectors for Ammonia, there is currently only one gas detection manufacturer who has achieved the FM performance approval. The FM approval is a certification that the sensor can detect low PPM Ammonia, reliably and repeatedly within a specified response time and accuracy. Detectors for hazardous classified locations is a separate but concurrent approval. Sensidyne is the only manufacturer of Ammonia detectors who has received the FM performance approval. This gas sensor stores calibration and other operational data, including peak exposure values and remaining sensor life.

Contact Sensidyne for more information on Ammonia monitoring; 800-451-9444 or info@Sensidyne.com.