Any business operating a chiller with ammonia is … Refrigerant grade anhydrous ammonia is a clear, colorless gas or liquid and about 99.95% pure. With ammonia, because fewer pounds of refrigerant are required to do the same amount of work, generally speaking, the lower a facility’s temperature requirements, the more cost-effective ammonia becomes. Typically use hot discharge gas or warm condensed liquid to provide an inexpensive heat source for boiling the cold contaminated liquid ammonia. As a refrigerant, ammonia has four major advantages over CFCs and HCFCs: The Dangers of Ammonia. Ammonia, frequently used commercially in large freezing and refrigeration plants is also called “anhydrous ammonia” because it contains almost no water (it is 99.98% pure). This means that, if released, ammonia can be a danger to the immediate environment. It is used to create a cool environment that helps keep products fresh and prevent bacterial growth. The ammonia refrigeration process has seen little change since the early 20th century. Exposure to 300 ppm is immediately dangerous to life and health. Concerns, Cautions and Considerations. Household ammonia, by comparison, is only about 10% ammonia by weight mixed with water. Ammonia refrigeration works much like Industrial Refrigeration systems using synthetic refrigerants, with the major exception being that it uses anhydrous ammonia as the refrigerant. The true danger from ammonia occurs when a person is unable to leave a gaseous ammonia environment, and when the liquid comes in contact with the body, particularly the eyes. Sometimes called ammonia regenerators, can be integrated directly into the refrigeration system. A release of Anhydrous Ammonia could happen in a number of ways: physical impact to the refrigeration system, seal leaks, piping corrosion, and hydraulic shock. Last month, a 5000 pound ammonia leak occurred at a Boston-area seafood warehouse that killed one worker and forced a shelter-in-place order from Boston Police. The odor of ammonia is widely recognized. The odor threshold reported in literature varies. However, the danger always exists that exposure will occur due to a leak or catastrophic release of Anhydrous Ammonia from a refrigeration system. Refrigerant grade anhydrous ammonia is a clear colorless gas or liquid and is considered an irritant. These units can vary in complexity and effectiveness, but generally are capable of operating continuously. The purity of the anhydrous ammonia is vital to the properties that make it a good refrigerant. Ammonia is classified as a Water Hazard Class 2 substance. There are certain risks resulting from ammonia for refrigeration systems. Ammonia is considered a high health hazard because it is corrosive to the skin, eyes, and lungs. ammonia refrigeration systems to gather information on safety practices and technologies and to share its knowledge with these facilities. in the workplace. In addition, over the past 2 years, Region III has Region III has conducted more than 135 chemical safety audits from 1995 to the present of both large and small facilities using ammonia for refrigeration. Problematic procedures may be to blame. While ammonia’s benefits are numerous, its dangers cannot be trivialized. Ammonia refrigeration is commonly found in cold storage, food processing and industrial applications, but the use of ammonia does extend into other markets as well, especially overseas. Environment that helps keep products fresh and dangers of ammonia refrigeration bacterial growth and health and technologies and to its... 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