Fire Extinguisher Types, Uses, and PASS Technique (2026 Complete Guide)

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Introduction

Fire safety is a critical part of workplace safety. Every year, thousands of fires occur in workplaces due to electrical faults, flammable materials, and human error.

Fire extinguishers are the first line of defense in controlling small fires before they become major disasters.

Understanding the types of fire extinguishers, their uses, and proper operation techniques can save lives and property.

What is a Fire Extinguisher?

A fire extinguisher is a portable device used to put out small fires in emergency situations.
It works by:
  • Cooling the fire
  • Removing oxygen
  • Interrupting the chemical reaction
Different types of extinguishers are designed for different classes of fire.

Classes of Fire

Class A

Fires involving solid materials like:
  • Wood
  • Paper
  • Cloth

Class B

Fires caused by:
  • Flammable liquids
  • Petrol
  • Oil

Class C

Fires involving electrical equipment.

Class D

Fires involving metals.

Class K (or F)

Fires caused by cooking oils and fats.

fire classes chart showing class A B C D and K fires with examples

Types of Fire Extinguishers

Water Extinguisher

  • Used for Class A fires
  • Not suitable for electrical fires

Foam Extinguisher

  • Suitable for Class A and B fires
  • Dry Powder Extinguisher
  • Used for Class A, B, and C fires

CO₂ Extinguisher

  • Best for electrical fires

Wet Chemical Extinguisher

  • Used for kitchen fires (Class K/F)
fire extinguisher types chart showing water foam co2 dry powder and wet chemical

Toolbox Talk Topics for Construction Sites

How to Use a Fire Extinguisher (PASS Technique)

The PASS method is the safest way to use a fire extinguisher:

P – Pull

Pull the safety pin.

A – Aim

Aim at the base of the fire.

S – Squeeze

Squeeze the handle.

S – Sweep

Sweep from side to side.

pass technique fire extinguisher steps pull aim squeeze sweep

Fire Extinguisher Safety Tips

  • Always check the pressure gauge
  • Ensure easy access to extinguishers
  • Never block fire exits
  • Do not use water on electrical fires
  • Maintain extinguishers regularly

Fire Extinguisher Inspection Checklist

  • Check pressure level
  • Inspect hose and nozzle
  • Ensure safety pin is intact
  • Verify expiry date
  • Confirm proper labeling
fire extinguisher inspection checklist diagram showing pressure gauge hose pin and expiry check

Common Mistakes to Avoid

  • Using wrong extinguisher type
  • Standing too close to fire
  • Ignoring training
  • Not maintaining equipment

Role of Safety Officers

Safety officers must:
  • Conduct fire risk assessments
  • Ensure proper extinguisher placement
  • Train workers in fire safety
  • Perform regular inspections
  • Implement emergency response plans

Conclusion

fire emergency response steps alarm evacuate call emergency and extinguish fire safely

Fire extinguishers are essential tools for workplace safety. Knowing the correct type and proper usage method can prevent small fires from becoming major disasters.
Every worker should be trained in fire extinguisher use to ensure a safe working environment.

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