A fire extinguisher is a hand or portable fire extinguisher. There are times when you do not have time to wait for the arrival of the fire service and you need to act on your own, it is important not only to promptly respond to the danger, but also to choose the right fire extinguisher for extinguishing.
Instructions
Step 1
Powder fire extinguishers are used in the elimination of fires and ignition of various oil products, all kinds of solvents, solids and electrical installations, with a voltage not exceeding 1000V. A typical example, known to some readers, is the OP-3 fire extinguisher, which is used to equip passenger cars and is also used in domestic conditions. In such fire extinguishers, the powder is expelled by means of a gas pumped into the flask of the device. Getting on the object of ignition, the powder blocks its access to oxygen and isolates it.
Step 2
Carbon dioxide fire extinguishers are used for the ignition of all kinds of materials and substances, electrical installations. They are suitable for extinguishing internal combustion engines and flammable liquids. The principle of operation of such a device is based on the displacement of carbon dioxide by increased pressure. Carbon dioxide gets on the objects of ignition, isolating them from oxygen. Such fire extinguishers are usually equipped with paint shops, warehouses and territories of various industrial zones. They can also be seen in museums, art galleries, or in a regular office.
Step 3
As with previous foam extinguishers, they are used to extinguish fires and in case of ignition of solids. They are not recommended for use when extinguishing alkaline substances and metals, and when combustion occurs without oxygen. When using a device of this type, foam is formed, which, falling on the object of ignition, lowers its temperature and blocks access to oxygen. Also, these fire extinguishers are prohibited for use when extinguishing electrical installations under voltage.
