The standard GOST 9593-74 (ISO 2435-73) applies to gaseous and liquid nitrogen (denoted N2), obtained from atmospheric air by the method of low-temperature rectification.
Nitrogen gas - dihydric inert gas without color, taste and smell, slightly soluble in water, density 1.25 kg / m3 at 0 C° and a pressure of 101.3 kPa.
Liquid nitrogen - colorless liquid, odorless, with a boiling point of 77.35 K at a pressure of 101.3 kPa and a specific volume of 1.239 dm3 / kg at 77.35 K, and a pressure of 101.3 kPa. The liquid nitrogen produced from the air by low temperature rectification process, and nitrogen gas - by gasification of liquid.
Nitrogen is nontoxic, but large concentrations of nitrogen causes the phenomenon of oxygen deficiency and suffocation. Therefore, when the nitrogen content of oxygen in the working area must be at least 19% (by volume).
The molecular weight (international nuclear weights of 1985) - 28.016.
Classification Nitrogen: first and second grade; technical gas compressed / uncompressed, liquid technical, gas / liquid high purity gaseous / liquid high purity
The use of nitrogen (gaseous and liquid)
Nitrogen gas is intended to create an inert atmosphere in production, storage and transportation of easily oxidized products, vegetable stores. In the food industry, nitrogen is registered as a food additive E941, as the gaseous medium for the packaging and storage of refrigerant in refrigeration systems, and liquid nitrogen is used for oil spill and non-carbonated beverage to generate excessive pressure and inert atmosphere in flexible containers. Artificial ice.
Preservation of closed metal vessels and pipelines and other purposes. Cryogenic cutting, nitriding of metal surfaces. Nitrogen as an inert protective atmosphere is used in the smelting of high strength steels and special alloys, in petroleum refining in the glass industry, etc. Liquid nitrogen is used in deburring.
Mechanical engineering, instrumentation:
Liquid nitrogen is used as refrigerant for injection into vehicle tires, for preserving the closed metal vessels and pipelines, in the coke production ( "coke dry quenching"). In the electronics industry, nitrogen is used to purge the areas that do not allow the presence of an oxidizing oxygen. Nitrous oxide is used as a fuel component in small spacecraft. Cooling the computer components during extreme overclocking.
Production of nitrogen fertilizers.
The beginning of the creation of a large nitrogen industry was made in the late 1920s, when a number of enterprises producing ammonia and nitric acid were built (Chernorechensky Plant, Bereznikovsky and Novomoskovsk Combines).
Nitrogen is the starting material for ammonia production. Under a nitrogen atmosphere, glycidol is obtained, which is used to create coatings with increased elasticity and flexibility, and nitric acid. Deep freezing of various materials, including organic.
Freezing of water-saturated grounds in the construction of underground structures. Another purpose of the gaseous species is to maintain the preservation of metal vessels, which are closed. It can also be pipelines.
Evaporating, nitrogen cools the fire and displaces the oxygen needed for combustion, so the fire stops. Since nitrogen, unlike water, foam or powder, simply evaporates and is weathered, nitrogen fire extinguishing, along with carbon dioxide, is the most effective way of extinguishing fires in terms of preserving values.
Thorough study of construction, technological and operational tasks, taking into account the requirements stipulated by the relevant regulatory documents for the design of hospitals and polyclinics. 3D-visualization of architectural solutions and technological processes.
Production of high-tech equipment for medical gas supply systems, which includes compressor and vacuum stations, oxygen generators and a wide range of medical consoles and their components. The production meets the requirements of domestic and European quality and safety standards.
Our specialists carry out a full list of works on construction, overhaul and reconstruction of health facilities, including such stages as: organization and holding of a tender, obtaining initial permits, passing state expertise, technical supervision and construction control, putting the facility into operation.
Equipping of medical institutions with high-tech equipment and medical equipment of leading domestic and foreign manufacturers. Monitoring of technical innovations allows you to purchase medical engineering systems and equipment of the latest generation with effective innovative solutions.
Installation of medical gas systems, equipment, ventilation systems, as well as structural elements of clean rooms. WestMedGroup provides a full range of installation services using the latest advanced technologies.
Maintenance and repair of medical equipment in accordance with the manufacturer's standards. Specialists of our company restore the efficiency of the equipment, replace the units worn out during operation. The guarantee of impeccable quality of the works performed is the availability of WestMedGroup's existing quality management system, licenses for production and maintenance of medical equipment.
Professional development, training and retraining of technical staff in designing health systems of gas supply, installation, operation and maintenance of the medical equipment is carried on professional courses and workshops, after which the certificate is issued