What type of fire wet chemical is used?

On Class A fires, the agent works as a coolant. On Class K fires (cooking oil fires), the agent forms a foam blanket to prevent reignition. The water content of the agent aids in cooling and reducing the temperature of the hot oils and fats below their autoignition point.

Where are wet chemical fire extinguisher used?

The wet chemical extinguisher, then, is ideal for a kitchen setting and class K fires. However, it can also be effective for class A fires where a material such as wood or paper has caught fire.

Which chemical is used in wet chemical fire extinguisher?

Wet chemical (potassium acetate, potassium carbonate, or potassium citrate) extinguishes the fire by forming an air-excluding soapy foam blanket over the burning oil through the chemical process of saponification (a base reacting with a fat to form a soap) and by the water content cooling the oil below its ignition …

Why would you use a wet chemical fire extinguisher?

Wet chemical fire extinguishers tackle fat and grease fires in kitchens (Class F), for example deep fat fryer fires. In addition, some wet chemical extinguishers can tackle Class A fires (wood, paper etc) and Class B fires (eg petrol).

When should you not use a wet chemical fire extinguisher?

Wet Chemical Extinguisher

Check manufacturer’s instructions for suitability of use. These extinguishers are usually not recommended for class B fires such as petrol, although Gloria has produced a 3 ltr wet chemical extinguisher with B rating.

IMPORTANT:  Which extinguisher is suitable for textile fire?

What are the 4 types of fire extinguishers?

There are four classes of fire extinguishers – A, B, C and D – and each class can put out a different type of fire. Multipurpose extinguishers can be used on different types of fires and will be labeled with more than one class, like A-B, B-C or A-B-C.

What is class ABCD fire?

There are four classes of fires: Class A: Ordinary solid combustibles such as paper, wood, cloth and some plastics. Class B: Flammable liquids such as alcohol, ether, oil, gasoline and grease, which are best extinguished by smothering.

Fire safety