What is the source of heat of fire?
Oxygen supports the chemical processes that occur during fire. When fuel burns, it reacts with oxygen from the surrounding air, releasing heat and generating combustion products (gases, smoke, embers, etc.). This process is known as oxidation.
What are the four elements of heat?
The four elements are oxygen to sustain combustion, sufficient heat to raise the material to its ignition temperature, fuel or combustible material and subsequently an exothermic chemical chain reaction in the material.
Who is responsible for using a fire extinguisher?
The appropriate person who has had the correct training should be responsible for using a fire extinguisher on a small fire. You should not use one if you have not been properly trained, unless the fire extinguisher is to be used as an aid to escape.
What are the two main sources of heat?
1. heat energy generated during chemical reactions (heat of oxidation, heat of combustion, heat of solution, spontaneous heating, heat of decomposition, etc.) 2. electrical heat energy (resistance heating, induction heating, heat from arcing, electric sparks, electrostatical discharges, heat generated by lightning stroke, etc.)
What are the four categories of heat energy?
The phenomena supplying heat energy may be grouped into four fundamental categories as to their origin (Sax 1979): 1. heat energy generated during chemical reactions (heat of oxidation, heat of combustion, heat of solution, spontaneous heating, heat of decomposition, etc.)
Which is the most common source of fire ignition?
2. electrical heat energy (resistance heating, induction heating, heat from arcing, electric sparks, electrostatical discharges, heat generated by lightning stroke, etc.) 4. heat generated by nuclear decomposition. The following discussion addresses the most frequently encountered sources of ignition.
What are the most common causes of fire?
According to Fire and Rescue statistics from 2016/17, the four most common causes of accidental fires in non-dwelling properties were: 1. Faulty appliances and leads 2. Faulty fuel supply 3. Misuse of equipment or appliances