In a note it is paid attention about danger of formation of air-gas mixes in a life and in particular when using by gas devices. The reasons of accidents to which brought violations of the rules of operation of household appliances are considered.
UDC 331
Annually in Ukraine in premises there are about 60 explosions of gas and the liquids being under pressure. Traumas and burns are got by over 150 people, from them perishes – more than 100!
Explosions of air-gas mixes arise at the certain content of gas in air or oxygen. In living conditions explosions can cause not only air-gas mixes, and and mixes with air parov gasoline, alcohol, acetone, kerosene and other inflammable liquids.
Main reasons for accidents the such: low level of knowledge of the population of instructions for use gas devices; weakening of control of a condition of smoke and ventilating channels from the housing and operational organizations; autocratic transferring of gas stoves without the knowledge of gas service; imperfect order of maintenance of intra house gas pipelines and household gas appliances.
Gas explosions in rooms occur owing to an effluence of gas and formation of an air-gas mix when using plates or gas cylinders. A gas effluence from a cylinder such malfunctions as can cause the gas admission through elements of accession of a cylinder with gas to a plate. Such occurs, generally when the gas cylinder is established not by the worker of a gas economy, and other person which has not been trained in rules of installation of gas cylinders. The gas effluence via the gate of a cylinder occurs in case the gate is insufficiently densely blocked or passes gas because of wear of consolidation or shutoff valves on the old gas stove. It is impossible to leave a plate without supervision when it use.
There are gas explosions at storage of incomplete cylinders. The explosive situation arises, if the cylinder is stored for emergency in closed, without an air exchange a room (a cellar, a cellar, the storeroom). Even at very small effluence of gas long time, concentration it in air can reach an explosibility limit.
Often explosions of natural gas occur in a sauna when heating a steam copper. The effluence, and can also incomplete combustion of gas, become the reason of formation of an explosive mix. Experts of a gas economy, instead of the owner of the house with assistants should equip a sauna with gas devices.
The steam copper in an economy is dangerous, as a bomb. It can blow up because of operation violation of the rules. Therefore it is necessary to equip it with a manometer for pressure control in a copper and one or two safety valves which let out from a copper in steam the atmosphere in a case when pressure exceeds admissible size. Before use the copper should be without fail subjected to hydraulic tests. If the owner of it doesn’t do, it is possible to pay with the life or life of the relatives.
There were numerous cases of explosions at preservation of meat and fish products in the self-made autoclaves which have not been equipped with manometers and safety valves.
As the vessel under pressure works a household sprayer of trees. It is necessary to adhere to safety rules which contain in the manufacturer instruction, and to work only within the recommended pressure.
Tires of cars also blow up during their inflating by air from the compressor that conducts to the traumas put by pieces of the broken-off tire. That there was no explosion, it is necessary to supervise a manometer pressure of air in the tire, without allowing its excess.
For prevention of explosions of the household appliances working under pressure, it is necessary to adhere to recommendations and requirements of manufacturers. Under no circumstances it is impossible to make changes to a factory design of devices autocratically.
(On Tekhnopolis magazine materials).