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Class D fires involve combustible metals as the fuel for the fire. The US, Europe, and Australia consider combustible metals as ”Class D.” Combustible metals usually have a very high flash point because you must expose vast amounts of heat to the metal before it burns.
Most class D fires occur when the combustible metals are in dust, flake, shaving forms or molten. A class D fire cannot be extinguished by water as it produces hydrogen at high temperatures and eventually an explosion occurs and spreads of fire further.
What is a Class D Fire? Class D fires, characterized by their involvement of combustible metals, pose unique challenges and require specialized extinguishing methods, a specialized fire extinguisher, and specialized fire safety to control and suppress effectively.
A Class D fire extinguisher is specifically designed to combat fires involving combustible metals such as magnesium, sodium, titanium, and potassium. It contains a specialized extinguishing agent that can safely suppress and control fires fueled by these highly reactive metals.
Class D Fires – Flammable Metals. Class D fires involve flammable metals, including titanium and magnesium. There isn’t enough awareness of metal fires and their hazards, with many assuming they aren’t even combustible. Metals such as sodium are not only combustible but are also heat conductors.
Different fires can have different hazards and risks. Using the wrong type of fire extinguisher could do more harm than good. There are 6 different classes of fire, depending on the type of "fuel" that is on fire. Class A (Solids) Class B (Liquids) Class C (Gases) Class D (Metals) Electrical Fires.
Be prepared and informed on the proper ways to combat the flames and avoid situations that can spark such a fire. How to distinguish class D fires (fires burning flammable metals), including what type of fire extinguisher to use for this type of emergency.
One class that notably stands out is Class D, or fires that ignite from combustible metals. When most people think of fire, they have a very clear, incinerating image in their heads of red and yellow flames, sometimes with a blue kernel where the flames peak at high temperatures.
The Class D fire extinguisher applies agent until the burning metal has been completely covered with agent. The agent melts and forms a hard crust over the burning metal, excluding oxygen, thus extinguishing the fire. Currently, this is the only method for extinguishing Class D fires.
Class D fires, which are extremely dangerous and capable of causing significant damage, are fires that use combustible metals as their fuel source. But what exactly makes them unique and how do they differentiate from another type of fire?