What are advantages and disadvantages of differ types of fire extinguisher?

Fire Extinguishers

Fire extinguishers are available for all types of fires that are designed to put out or control small fires.

Types of fire Extinguishers

l Water-type fire extinguishers

l Foam-type fire extinguishers

l Carbon dioxide fire extinguishers

l Dry chemical powder fire extinguisher

l Wet chemical powder fire extinguisher

What are advantages and disadvantages of differ types of fire extinguisher?

Classification of fires According to British Standard

Class A -   Solid combustible Non-metals that leave an ash

E.g. wood, paper, cloth, trash, plastic.

Class B -   Flammable liquids that boil or bubble

E.g. Gasoline, oil, grease, acetone 

Class C -   Flammable gasses e.g., methane, propane, LPG

Class D -   Combustible Metals: potassium, sodium, aluminum, magnesium.

Class K -   Kitchen fire, Cooking oil or fat

What are advantages and disadvantages of differ types of fire extinguisher?

Advantages and disadvantages of fire Extinguishers

Water (standard)

Advantages:

• Excellent penetration properties.
• Excellent heat absorption and quick cooling effects.
• The long-range jet, which prevents you from getting too close to the fire.
• The water vaporizes and becomes steam when it is heated.
• Doesn't leave a mess or cause lasting damage after the fire has been put out, and it enables a more compact company mitigation strategy.

Disadvantages

• limited to class A fires only.
• The extinguisher is inappropriate for use near live electrical apparatus or if the type of fire has an electrical supply because water conducts electricity.

What are advantages and disadvantages of differ types of fire extinguisher?

Water spray (water with additive)

Advantages:

• Excellent suffocation properties
• Quickly creates a cooling effect
• When heated, water vaporizes and becomes steam.

Disadvantages:

• Limited to class A fires only.
• Leaves a tiny quantity of residue after putting out a fire.
• The extinguisher is inappropriate for use near live electrical apparatus or if the type of fire has an electrical supply because water conducts electricity.

What are advantages and disadvantages of differ types of fire extinguisher?

Water mist (de-ionized water)

Advantages:

• Excellent suffocation properties.
• Quickly creates a cooling effect.
• When heated, water vaporizes and becomes steam.
• Can be used at a distance of 1m on class A, B, C, F, and electrical flames.
• Leaves almost no residue and damage.

Disadvantages:

• The fire extinguisher fire rating for class B, C, F, and electrical fires is lower than other types of fire extinguishers aligned with this class of fires Dry powder extinguishers.

Dry Powder Extinguishers

BC Powder Advantages:

• Can be used on
• Class A fires involving combustible solids like wood and paper
• Class B flames caused by paints, gasoline, diesel, and other flammable substances
• Class C fires featuring butane and methane, two flammable gases
• Forms a barrier that excludes oxygen and prevents re-ignition
• Can be used in environments over a wide temperature range of -20°C to 60°c (EN models)
• Twice as efficient as foam on class-A fires
• Less prone to freezing than water-based extinguishers

Disadvantages:

• Clean-up can be costly and time-consuming, as lots of residues are left after use
• Visibility is reduced when discharged
• No or very limited cooling properties
• Can cause corrosion on electrical equipment

What are advantages and disadvantages of differ types of fire extinguisher?

High-performance powder

Advantages: 

• Can be applied to class D flames that involve metals and flammable liquids such as gasoline, diesel, spirits, and paint.
• Forms a barrier that excludes oxygen and prevents re-ignition
• Can be used in environments over a wide temperature range of -20°C to 60°c (EN models)
• Less prone to freezing than water-based extinguishers

Disadvantages:

• Clean-up can be costly and time-consuming, as lots of residues are left after use
• Visibility is reduced when discharged
• None or minimal cooling properties
• Can cause corrosion on electrical equipment

What are advantages and disadvantages of differ types of fire extinguisher?

AFFF (foam) Advantages:

• Creates a blanket-like foam that originally covers the surface and smooths the fire 
• Superior cooling qualities in comparison to other foam fire extinguisher types (excluding water types)
• Foam breaks down the liquid drain and forms a film on the burning surface 
• Foam helps to prevent re-ignition
• Class A and B flames are suitable for AFFF use.

Disadvantages: 

• Not applicable to other kinds of fires 

What are advantages and disadvantages of differ types of fire extinguisher?

Eco foam.

By cooling the gasoline, foam extinguishers function similarly to water extinguishers. By erecting a barrier between the flame and the fuel, the foaming agent acts.

 Advantages:

• is employed on class A and class B flames.
• Suitable for use on liquid, wood, paper, and electrical appliance fires
• Compared to powder discharge, foam is simpler to clear up.

Disadvantages:

• Can be susceptible to frost 
• Some residue is left after use 

What are advantages and disadvantages of differ types of fire extinguisher?

Carbon dioxide (CO2)

This type of fire is used for Class B and electrical flames are the best option for this kind of extinguisher. They are filled with pure, compressed CO2 (carbon dioxide) gas, which is released as a potent stream of gas through a horn. These are frequently the most widely used options for extinguishers and putting out fires by depriving them of air.

Advantages:

• Smother fires more quickly in draught-free conditions
• As a non-conductor, carbon dioxide can be applied to live electrical devices (so is often suitable for server rooms).
• Unlike powder, it doesn't leave any residue and is less harmful to electrical devices.
• Appropriate for class B fires, which involve flammable liquids like gasoline, diesel, alcoholic beverages, and paint.

Disadvantages:

• Because it is an asphyxiation gas, it should not be used in Confined areas.
• Has limited cooling properties 
• Offers no protection against re-ignition
• If a non-insulated horn is used, touching it can result in frost damage.
• For other kinds of flames, other kinds of extinguishers will still be needed.
• Even indoors, as soon as the CO2 dissipates any remaining embers can start re-ignition the fire

What are advantages and disadvantages of differ types of fire extinguisher?

Wet chemical

Wet chemical fire extinguishers contain an odorless, clear fluid and are marked by a yellow label. They have a unique classification system known as an F grade. The light foam produced by these extinguishers, which are best used on deep-fat fryers, remains on the hot surface and spreads out until the oxygen supply is shut off by the foam covering the complete surface.

Advantages:

• Reduces quickly in the case of a class F fire
• Low chance of re-ignition.
• Low pressure to lessen the possibility of burning gasoline sputtering and injuring
• Someone After use, cleanup is fast and simple.

Disadvantages:

• Wet chemical extinguishers use an alkaline fluid that could lead to some metals corroding.
• The remedy might irritate your epidermis and eyes.
• Not suitable for electrical fires

What are advantages and disadvantages of differ types of fire extinguisher?