Fire Extinguishers and How to Use Them

15 November 2024

This article will look into fire extinguishers and how to use them. A fire extinguisher is a portable device that discharges a jet of water, foam, gas, or other material to extinguish a fire. Usually, fire extinguishers are red with a coloured label to indicate its type. In addition, they must be accompanied by a sign giving details of its type and use. This sign must be placed by the extinguisher.

Extinguishing Fires

To extinguish a fire, one or more of the elements in the fire triangle has to be removed or reduced to a level where it will no longer support combustion. Furthermore, most extinguishers work by smothering or cooling the fire (or a combination of both methods). Employers and those responsible for premises must provide appropriate firefighting equipment for the risk and make sure sufficient people are trained in its use.

Fire Extinguisher Checks

A trained fire extinguisher engineer should inspect and service all extinguishers annually. Extinguishers should be suitable for the risks assessed and highlighted in the Fire Safety Risk Assessment. In addition, it is also important that extinguishers are checked regularly throughout the year to make sure:

• The pressure gauge needle is in the correct position (in the green zone).
• There are no signs of tampering and the safety pin is in place.
• It has been serviced within the last 12 months (a test label should be visible)
• There are no signs of rust, corrosion or leaks.
• It is sited correctly in an easily accessible position, ready to be picked up and with a sign indicating its type placed next to it.

Commonly Used Fire Extinguishers

Fire extinguishers are red with a coloured label to indicate its type. A sign giving details of its type and use must be placed by the extinguisher.

Water Extinguishers [RED LABEL]

Only suitable for use on solid materials such as wood, paper, straw, textiles, coal etc.

Foam Extinguishers [CREAM LABEL]

Can be used on flammable liquids and the same type of fires that water extinguishers can be used on. Particularly suitable for petrol and diesel fires. Do not use on cooking oil, fat pan fires or flammable metal fires. Do not use on electrical equipment (unless stated otherwise).

CO2 (carbon dioxide) Extinguishers [BLACK LABEL]

Suitable for fires involving electrical equipment (even when live). Can also be used on flammable liquids, e.g. paint, petrol etc.

Note:

• Do not use on cooking oil, fat pan fires or flammable metal fires.
• Should not be used in confined spaces.
• The fire may re-ignite as it does not cool very well.
• The discharge horn and hose may freeze and could cause cold burns if in direct contact with the skin.

Dry Powder Extinguisher [BLUE LABEL]

Can be used on most types of fire, including fires on electrical equipment (but it could damage the equipment).

Note:

• Do not use on cooking oil, fat pan fires or flammable metal fires.
• Not suitable for confined places (can affect visibility and people with breathing problems).

Wet Chemical Extinguishers [YELLOW LABEL]

The only extinguisher that can be used on cooking oils and fats (e.g. lard, butter, olive oil, sunflower oil, etc.)

Note:

• Should not be used on petrol, spirits or mineral oils. Check manufacturer’s instructions for other uses.

Fire Blankets

Fire blankets are made of a fire retardant material and are used to smother small fires. Generally, they are most commonly found in kitchens. In order to extinguish the fire, where it is safe and quick to do so, you should turn off the heat (e.g. the gas or electric supply to a cooker). However, if the fire is bigger than the blanket, you should not attempt to smother it.

Using a fire blanket:

• Pull it out from the case.
• Hold it in front of you, gripping it near the top corners.
• Protect your hands by making sure the blanket covers them.
• Place the blanket over the fire.
• Leave the fire covered for 30 minutes to prevent re-ignition (hot liquids and oils are particularly likely to re-ignite if oxygen becomes available again) Some fire blankets are designed for single use, so the manufacturer’s instructions should be checked following a fire.

Using a Fire Extinguisher

You should only ever attempt to fight a fire if it is safe to do so! You should only fight a fire if:

• Someone has already raised the alarm.
• The emergency services have been called.
• The correct type of extinguisher is available.
• You are competent and have been trained to use the extinguisher.
• A safe escape route is available.
• The fire is smaller than a waste paper bin.

Do not fight a fire if:

• The room is filling with smoke or the fire is spreading.
• Other hazards are present (such as chemicals or gas cylinders).
• The fire is not reducing or more than one extinguisher is required.

Whilst different extinguishers should have their instructions for use on the cylinder, the general advice for operating a fire extinguisher can be remembered as PASS:

• P – Pull Pull the pin. This will also break the tamper seal.
• A – Aim Aim low, pointing the extinguisher (nozzle, horn or hose) at the base of the flames.
• S – Squeeze Squeeze the handle until the extinguisher discharges.
• S – Sweep Sweep from side to side at the base of the fire until it appears to be out. Watch the area. If the fire reignites, repeat steps 2 to 4.

REMEMBER

Do not attempt to fight a fire unless you have been trained to do so.

Training Requirements

The eLearn Safety fully online Fire Safety Awareness course is designed to help employers meet their legal requirement to provide information and training to staff regarding specific hazards. Without doubt, fire safety is an essential part of any safety management system. This course, along with regular fire drills, will help ensure regulatory compliance.

Further Reading

The Health and Safety Authority of Ireland (HSA) provides a wealth of useful information about fire safety on their website pages. Fire safety awareness training should form part of a good fire safety management system. However, training alone should not substitute for active monitoring and involvement from management. Regular drills should be carried out to ensure regulatory compliance.

Online Health and Safety Training

Proactive Health and Safety training is critical to ensure a safe workplace. An effective training program can reduce the number of worker injuries and deaths. It can also reduce instances of property damage, legal liability, illnesses, and missed time from work.

Health and Safety training helps establish a culture in which employees themselves help promote proper safety procedures while on the job. It is important that new employees be properly trained and embrace the importance of workplace safety. The role of training in developing and maintaining effective hazard control activities is a proven and successful method of intervention.

This is why we have established eLearn Safety school. We pride ourselves in how we guide, support and mentor our students. They receive support throughout their learning experience and into their working lives. Our staff have extensive training experience and also have many years industry experience. We understand the challenges that exist within Environmental and Occupational Health and Safety. Our priority is to ensure that all learners are fully prepared to differentiate themselves in the workplace after completing our Health and Safety courses.

eLearn Safety offers fully online Health and Safety courses.

To find out more, please check our Courses page.

Alternatively, should you need any additional information, please do not hesitate to let us know via email info@elearn.ie

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