Jauhesammuttimet

Jauhesammuttimet are a type of fire extinguisher widely used in Finland and other parts of the world. They contain a dry powder extinguishing agent, typically a monoammonium phosphate-based chemical, which is expelled under pressure. This powder is effective on a wide range of fire classes, including Class A (ordinary combustibles), Class B (flammable liquids), and Class C (flammable gases). They are also suitable for electrical fires up to a certain voltage rating, indicated on the extinguisher.

The extinguishing mechanism of a powder extinguisher involves a combination of smothering and chemical inhibition. The powder smothers the fire by forming a barrier between the fuel and the oxygen supply. Additionally, the chemical compounds within the powder can interrupt the chain reaction of combustion. Jauhesammuttimet are easily identifiable by their distinctive pressure gauge, which shows the operating pressure of the extinguishing agent.

When operating a jauhesammutin, the user typically pulls a safety pin, aims the nozzle at the base of the flames, squeezes the operating lever, and sweeps the nozzle from side to side. While effective, it's important to note that the powder discharge can create significant dust, which can impair visibility and potentially damage sensitive electronic equipment. After use, the powder residue needs to be cleaned up thoroughly. Regular maintenance and inspection are crucial to ensure the jauhesammutin is in working order.