Kustutuspulbriga

Kustutuspulbriga translates from Estonian to "with extinguishing powder." This term refers to the use of dry chemical fire extinguishers, which are filled with a fine powder designed to suppress fires. These extinguishers are effective against various classes of fires, including Class A (ordinary combustibles), Class B (flammable liquids), and Class C (electrical fires). The extinguishing powder typically works by interrupting the chemical chain reaction of the fire. It can also smother the flames by forming a barrier between the fuel and oxygen.

The specific type of dry chemical powder used can vary. Common agents include monoammonium phosphate, which is effective on Class A, B, and C fires, and sodium bicarbonate or potassium bicarbonate, which are primarily used for Class B and C fires. When a dry chemical extinguisher is activated, a propellant gas expels the powder in a cloud. Users should aim the nozzle at the base of the fire and sweep the discharge from side to side. While effective, dry chemical extinguishers can leave a residue that may be corrosive to certain materials and can reduce visibility during use. Proper maintenance and understanding of their limitations are important for effective fire suppression.