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5.6 Fire prevention measures Responsibility for the fire department and the state fire protection measures confer on the head of the department that its order appoint a person from among the engineers responsible for fire safety at each site. Work on the use of open fire during welding and other work is only allowed to spend on the permit issued by the head of department, and the written permission of the fire brigade. The main technological processes in electrolysis plants are associated with hot melt electrolyte and metal, some of the processes and operations are accompanied by the release of sparks and flame. The melt temperature above the ignition temperature of many combustible materials, so according to the degree of fire danger aluminum production (electrolysis body, casting department, pouring portion of the bottom section and baked anodes) belongs to the category G. However, in the shop, there are areas with high fire danger: charging station batteries , premises reagents in froth flotation separation, oil station and maslonalolnennye transformers and so on. Applicable in the electrolysis of alumina and aluminum fluoride - AlF3, CaF2, MgF2, NaF, Na3AlF6 - fire and explosion, but toxic and the degree of influence on the human body are substances second class of danger. When the content in the air above the specified MAC fluorides they can cause corresponding disturbances of body functions. In this regard, the elimination of the fire should be conducted in respirators. The greatest danger is fire breakouts and melt emissions from electrolytic cells, which simultaneously represent a serious threat to the health and lives of people. The possibility of fires in the conventional electrolysis buildings is extremely limited, as constructive ele¬menty buildings made of non-combustible materials. Exceptions are wooden swing skylights in the walls of buildings, asphalt flooring and soft roof roofs. That can ignite from the welding, lightning, careless handling of fire while burning hearth, and so on. Thus, the main measures for the prevention of fire safety in the electrolysis buildings should be directed at preventing explosions and melt emissions from metallurgical units -. electrolyzers, bucket, smelters success of the struggle with the ensuing fire depends on the speed of action technological personnel, which requires to notify the fire department, to take people out of the danger zone and immediately set in motion the means at hand extinguish a fire. In case of fire outside the housing electrolysis to eliminate it is possible to use water, foam, carbon dioxide and so on. In case of fire inside buildings the use of water is not allowed, but it is possible to use carbon dioxide fire extinguishers. Air-mechanical foam can be used only after a power failure, since the foam can be electrically conductive. To eliminate fire in the electrolysis of alumina application packages effectively. For each redistribution, site and service in the electrolysis shop develop fire safety instructions. Mainly in the case of fire protection facilities electrolysis shop is the implementation of preventive measures that eliminate the possibility of the emergence and spread of fire. [1]
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