Question

describe the types of fire extinguisher with classes and examples

Answer 1

Question÷

describe the types of fire extinguisher with classes and examples

Amswer÷When it comes to the types of fire extinguishers, there are five main types including wet chemical, CO2, dry powder, foam and water. In order to meet the current regulations, it is important for you to have the exact type of fire extinguisher that is needed for your premises. The need for different types of fire extinguisher arises from the different types of fuel that may start a fire. The different types of fires caused by different fuels are classified as different classes of fire. As far as the type of fire extinguisher needed at your business premises is concerned, it depends on the fire risk from various classes of fire.

It is important for you to ensure that the right size and weight of fire extinguisher is available at your business premises to meet the fire safety regulations.

Even though the fire extinguishers are classified into five main types, the dry powder and water extinguishers have different versions which means there are a total of eight different types of fire extinguishers to choose from. The eight different types of fire extinguishers include specialist dry powder, standard dry powder, foam, water spray, water mist, water spray, wet chemical and carbon dioxide. There is no single fire extinguisher that can be used on all classes of fire.

Here is a brief summary of different fire classes along with a reference chart displaying the type of extinguisher for each glass of fire. We also share detailed explanation of different types of fire extinguishers below.

Fire Classes

There are six different types of fire classes and here is a detailed list covering types of fire included in each class.

Class A Fires

Class A fires include fires caused by combustible materials including paper, fabric, wood and other flammable solids.

Class B Fires

Class B fires include fires caused by flammable liquids such as paint, turpentine or petrol among others.

Class C Fires

Class C fires are those caused by flammable gases including methane, butane or hydrogen among others.

Class D Fires

Class D fires include fires caused by combustible metals including potassium, aluminium or magnesium among others.

Class F Fires

Class F fires include those caused by cooking oils such as a chip-pan fire.

Electrical Fires

The electrical fires refer to the category of fires involving electrical equipment but upon removal of the electrical item, the fire class is changed.

Types of Fire Extinguishers

Foam Extinguishers

Foam ExtinguisherThese are the most common type of fire extinguishers used for class B fires. However, these are water-based which means they these can also be used for class A fires. The label colour is cream.

These fire extinguishers may be used for fires caused by various organic materials including wood, coal, textiles, fabrics, cardboard and paper among other things as well as flammable liquids including petrol and paint.

This type of fire extinguisher should not be used for fires caused by flammable metals, kitchen fires and fires that involve electrical equipment.

How This Extinguisher Works

These extinguishers work by creating a cooling effect on the fuel that is responsible for causing the fire. When it is poured on burning liquid, the fire is extinguished by creating a barrier between the fuel and the flame with the help of the foaming agent.

Foam extinguishers are needed by business and premises where the building is made from various organic materials or in buildings where such organic materials are likely to be found including warehouses, residential properties, hospitals, schools, offices and buildings storing flammable liquids. In simple terms, most of the buildings require the presence of foam or water extinguishers.

Location

This type of extinguisher should be placed by the exits on floors that have been identified as a fire risk for class A or class B.

Water Extinguishers

Water ExtinguisherWater extinguishers are mostly used for class A fire risk. In most premises, it is necessary to have either foam or water extinguishers. It has a bright red label.

This type of extinguisher is used for fires caused by various organic materials including fabrics, textiles, coal, wood, cardboard and paper among others. It should not be used for kitchen fires, fires caused by flammable gas and liquids as well as fires that involve electrical equipment.

How This Extinguisher Works

As far as the inner working is concerned, a water extinguisher works by having a cooling effect on the liquid that causes the burning fuel to burn at a slower rate until the flames are completely extinguished.

The type of businesses or premises where these extinguishers are needed include buildings made of wood or organic materials or business premises containing certain types of organic materials such as hospitals, schools, offices, warehouses and residential properties. Most of the buildings require either foam or water extinguishers.

Answer 2

Answer:

The eight different types of fire extinguishers include specialist dry powder, standard dry powder, foam, water spray, water mist, water spray, wet chemical and carbon dioxide. There is no single fire extinguisher that can be used on all classes of fire.

Types of Fire Extinguishers:

• Foam Extinguishers
• Water Extinguishers
• Dry Powder Extinguisher
• Wet Chemical Extinguishers
• Carbon Dioxide (CO2) Extinguishers

Explanation:

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