Selection of dry powder fire extinguishers

Dry powder fire extinguishers are core fire safety equipment in industrial plants, commercial buildings, and kitchens due to their wide range of applications, high extinguishing efficiency, and low maintenance costs. Selection should focus on four core dimensions: fire type, scene requirements, technical parameters, and compliance, combined with precise matching to the actual application scenario. The following is a structured selection plan:

Core Classification: Selection based on the type of dry powder (matching fire scenarios)

1. ABC Dry Powder Fire Extinguisher (General Purpose)

Extinguishing Principle: Inhibits the combustion chain reaction, effective against solid, liquid, and gas fires.

Applicable Scenarios:

Industrial plants (electrical equipment, machinery workshops, storage areas)

Commercial premises (offices, shopping malls, hotels)

Kitchen appliances (non-deep fryer fires, initial electrical equipment fires)

Advantages: Strong versatility, covers most common fire types in B2B scenarios.

Precautions: Ineffective against metal fires; residual powder needs to be cleaned after extinguishing (to avoid corrosion of precision equipment).

2. BC Dry Powder Fire Extinguisher (Specialized)

Extinguishing Principle: Suffocation + cooling, specifically for liquid and gas fires.

Applicable Scenarios:

Gas stations, chemical warehouses (flammable liquid and gas storage areas)

Boiler rooms, generator rooms (fuel and gas equipment areas)

Advantages: Fast extinguishing speed, highly effective against oil fires.

Precautions: Cannot be used for solid fires (such as wood and paper fires).

3. D Dry Powder Fire Extinguisher (Special Metal Fires)

Extinguishing Principle: Covers the metal surface to isolate oxygen and inhibit metal combustion.

Applicable Scenarios:

Machining workshops (aluminum, magnesium, titanium and other metal powder processing areas)

Metallurgical plants, metal storage (active metal storage areas)

Advantages: The only type of dry powder that can extinguish metal fires.

Precautions: Highly specialized, cannot be used for other types of fires, requires separate configuration.