Refrigeration System Coolant - Ammonia

Update:29 Dec 2017

A common refrigerant in refrigeration system is ammonia […]

A common refrigerant in refrigeration system is ammonia. Ammonia is harmful to the human body, so safety should be taken during the operation of the refrigeration system to avoid ammonia leakage.

Ammonia leak occurred first aid measures: When the accident occurred, the shift operator to calm, should not panic, so as not to open or stagger the valve on the machine equipment, leading to further expansion of the accident. We must correctly judge the situation and organize experienced mechanics to wear protective equipment to the scene for rescue. In the case of high-pressure pipeline leakage, the compressor should be stopped immediately to cut off the pipe connecting with the system through the leaked ammonia. If the pipe is not long, the method can be used to vent, to be more than a ammonia ammonia finished, and replacement welding. Such as low-pressure pipe (such as cold storage equipment) ammonia leak, leakage should be quickly identified, close its supply valve. Due to the warehouse ammonia is very strong, can be ruled by an open fan and spray neutralized with acetic acid solution.

If conditions permit, you can start the compressor to draw back the ammonia solution in the cooling device. The operator can according to the refrigeration system different characteristics and the specific situation, adopt the flexible, safe, the effective processing method.

Ammonia is a toxic and irritating gas, which is a gas at normal temperature and pressure. Ammonia invades the human body through the respiratory tract and skin. Ammonia easily soluble in water, often act on the conjunctiva, the upper respiratory tract and other leaks in the air mucosa, adhesion mucosa, become alkaline substances, have a strong stimulating effect on the mucosa. Ammonia is inhaled, immediately appear more than cough choke, suffocating, shortness of breath, tears, fear of light, sore throat and other illnesses. If inhaled ammonia concentration is high, there may be lip, nail purple and other symptoms of hypoxia, accompanied by dizziness, nausea, vomiting, breathing difficulties. Some patients pharyngeal edema, and even pneumonia and pulmonary edema. Can seriously irritate the eyes, nose and lung mucosa. Ammonia can not only cause poisoning of personnel through the respiratory tract and skin, but also the strong irritation of ammonia can cause eye damage and serious eye blindness. Chronic ammonia poisoning can also cause respiratory diseases such as chronic bronchitis and emphysema.