Fire extinguishers have to be present at each staff room or the apartment that the owner in case of fire could stop spread of fire before arrival of firefighters or localize it in one point. It is necessary to choose fire extinguishers, proceeding from the purpose of their use and types of assignment, and it is possible to buy them in construction hypermarkets, online stores and other outlets with the corresponding goods.
Carbon dioxide fire extinguishers
The type of the fire extinguisher which is necessary for fire extinguishing, is defined from the sizes of the area of the object on which presumably there can be ignition center. Main types of fire extinguishers are divided into carbon dioxide and powder. Carbon dioxide fire extinguishers extinguish fire by means of the liquefied carbon dioxide and, in turn, are subdivided into manual and mobile devices. It is better to choose manual fire extinguishers for suppression of fire in electric units in which tension is no more than 1000 watts. Besides, them extinguish various burning materials and substances.
The manual carbon dioxide fire extinguisher it is impossible to extinguish substances or materials which can burn without direct intake of oxygen.
Mobile carbon dioxide fire extinguishers should be chosen for suppression of combustible or flammable liquids, small electrical units and internal combustion engines. Besides, they will be ideal for the museums, libraries and archives where use of water at the fire can damage valuable objects. Motorists can choose carbon dioxide OU-1, OU-2 fire extinguishers for the machines. It is important to remember that during the work with this type of fire extinguishers it is necessary to avoid hit of stream of carbonic acid on open area of body – it will cause frostbite.
Dry powder extinguishers
Dry powder extinguishers are the most widespread, are suitable for suppression of all fires and are divided into three views: stationary, manual and mobile. Their main component are powders of the general and special purpose. The first option is used for suppression of gases, wood and other carbon materials. The second option is applied to fire fighting, spontaneously flaring up substances and also aluminum and kremniyevoorganichesky connections. The main lack of dry powder extinguishers is pollution of the place of suppression by fire extinguishing powder. There are dry powder extinguishers filled with gas and fire extinguishers in which gas is formed owing to chemical reaction. Externally the first option differs from the second only in availability of the manometer. The fire extinguisher works with the gas formed by chemical reaction more slowly at the expense of time leaving on elaboration of this reaction therefore it is more preferable to choose the fire extinguisher with ready gas which works more quickly and effectively.