![]() ![]() Electrical fires - electrical equipment: once the electrical item is removed, the fire changes class.Class D fires - combustible metals, including chemicals such as magnesium, aluminium or potassium.Class C - flammable gases: like hydrogen, butane or methane.Class B – flammable liquids such as petrol, turpentine or paint.Class A – combustible materials caused by flammable solids such as wood, paper, and fabric.There are six different classes (or types) of fire. There is no single fire extinguisher which works on all classes of fire. Anyone who may have to use a portable fire extinguisher should be trained by a professional to do so. There are as many as 15 if you count the supplementary portable fire extinguishers. The five different types of portable fire extinguishers are water, powder, foam, wet chemical and carbon dioxide (CO2). This article will help you learn what different types of fire extinguishers are available, what different classes of fire you may come across and which extinguishers should be used to tackle them, if it is safe to do so. Your fire risk assessment should identify which types of fires are most likely to occur in your building/premises, making this a good place to start. Sweep from side to side.When choosing the right fire extinguisher, it is important to know that no single type of fire extinguisher can be used on all types of fires. Pull the pin Aim at the base of the fire. Like all other fire extinguishers, you need to remember the PASS-word. How To Use A Carbon Dioxide Fire Extinguisher ![]() Every Five years, fire extinguishers require a hydrostatic pressure test to make sure your device is operating effectively and recharged when an extinguisher is discharged. A hostile environment could mean that your work type has more associated fire hazards than usual. Extinguishers need to be inspected at least once every six months in environments deemed’ hostile’. How Often Does A CO2 Extinguisher Need To Be Tested?ĬO2 Fire extinguishers must be tested every 12 months by a professional, per NZS 4503:2005. Users should use caution with how much CO2 is being discharged in small, confined areas. Using it on class A fires or class F fires could cause the fire to spread. As CO2 works by displacing the oxygen around the fire, it is not suitable for outdoor use, or in environments exposed to windy conditions. There is a risk of ice burn to your hands as the temperature of an extinguisher horn drops rapidly and freezes over. Disadvantages Of Carbon Dioxide Extinguishers However, you should have it recharged ASAP. Carbon Dioxide is a non-conducting agent, so can be used on live electrical equipment. The most common Carbon Dioxide Fire Extinguisher sizes found in New Zealand areĪdvantages Of Carbon Dioxide Extinguishersīeing non-toxic and leaving no residue CO2 will not harm food, fabrics, machinery or electrical equipment. It also has a cooling effect, removing some of the heat. The CO2 Extinguisher contains carbon dioxide in a liquid form, and when the extinguisher is used the liquid is released into the air, turning into a gas and offsetting the oxygen that the fire is feeding on. How Does A Carbon Dioxide Fire Extinguisher Work? They contain a pressure relief disk that bursts at temperatures exceeding 50 Degrees Celsius. Where To Use A CO2 Fire Extinguisherĭue to the extinguishing agent not causing any damage to electrical equipment, it is the perfect extinguisher for areas such asĬarbon Dioxide fire extinguishers shouldn’t be placed in locations exposed to direct sunlight or radiated heat. They also have a different hose to other extinguishers ending with a horn. How to Identify A Carbon Dioxide Fire Extinguisher?Ĭarbon Dioxide Fire Extinguishers are red cylinders with a black band running all around the top. ![]()
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