Question

explain the content and working of red fire extinguisher pls answer​

Answer 1

Answer:

Content:

The two types of dry chemical extinguishers include one that contains ordinary sodium potassium bicarbonate, urea potassium bicarbonate, and potassium chloride base agents. The second, multipurpose type contains an ammonium phosphate base. The multipurpose extinguisher can be used on Class A, B, and C fires

Working:

1. Water (White)

Water is usually the first thing you think of for putting out fires. And water fire extinguishers are probably the most common. This fire extinguisher is red with white writing and label. It mostly works by cooling the fire to extinguish it.This type of fire extinguisher is simple to use. However, water fire extinguishers are only suitable for class A fires, which are fires involving solids. Like burning wood, paper, plastics etc.

2. Foam (Cream)

Foam fire extinguishers are red with a cream label. Foam extinguishers primarily work by smothering fires and starving the fire of the oxygen it needs to burn.Like water extinguishers, they can be used on class A fires. Foam extinguishers are also used on class B fires. These are fires involving liquids, like petrol and paints.

3. Powder (Blue)

Dry powder fire extinguishers are red with a blue label. Like foam, the non-combustible powder smothers the fire. Unlike foam extinguishers, this type of extinguisher doesn't contain water so can be used on live electrical equipmentPowder extinguishers can be used on class B (liquid), class C (gases), and class E (or electrical fires). They also have some limited use on class A fires. While a useful multi-purpose extinguisher, power does have some downsides. Powder extinguishers are very messy when used. The use of this extinguisher can fill the air with powder causing visibility issues, and inhalation of powder. And, while it can be used on electrical equipment, power will enter equipment and can cause damage.

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