Fire point vs Flash point?
Answer:
*There is an older measure, called the fire point, which is the temperature at which the liquid emits sufficient vapours to sustain combustion. The fire point is usually several degrees above the flash point for hydrocarbons.
*The flash point is the most common measure of flammability today, especially in transportation of chemicals, mainly because most regulations use the flash point to define different classes of flammable liquids. The flash point of a
liquid is the temperature at which the liquid will emit sufficient vapours to ignite when a flame is applied. The test consists of placing the liquid in a cup and warming it at a prescribed rate, and every few degrees applying a small flame to the air above the liquid until a "flash" is seen as the vapours burn. Note that the flame is not applied continuously, but is
provided at prescribed intervals - thus allowing the vapour to accumulate.
*Please visit for more details:
http://www.faqs.org/faqs/sci/chem-faq/pa...
*The flash point of a flammable liquid is the lowest temperature at which it can form an ignitable mixture in air. At this temperature the vapor may cease to burn when the source of ignition is removed. A slightly higher temperature, the fire point, is defined as the temperature at which the vapor continues to burn after being ignited. Neither of these parameters are related to the temperatures of the ignition source or of the burning liquid, which are much higher. The flash point is often used as one descriptive characteristic of liquid fuel, but it is also used to describe liquids that are not used intentionally as fuels.
http://en.wikipedia.org/wiki/flash_point...
*The fire point of a fuel is the temperature at which it will continue to burn after ignition for at least 5 seconds. At the flash point, a lower temperature, a substance will ignite, but vapor might not be produced at a rate to sustain the fire. Fire point and autogenous ignition are additional considerations when selecting fire resistant greases. Industrially, fire point is the lowest temperature at which industrial greases produce sufficient vapors to form a mixture in air that continuously supports combustion after ignition.
http://en.wikipedia.org/wiki/fire_point...
let me recall hmmm.
when i work in a fire protection company we always run into these terns and i always assumed to know.
anyway i think a fire point means it where the fire started. say when a warehouse is burned down. the arzon investigators would look for the fire point, where the fire started (say electrical short circuit)
however a flash point is when a fuel is ignated. the triangle of fire is heat, fuel and oxygen this is now changed. we now have the tetrahedron of fire - heat, fuel, oxygen and a flashpoint.
i hope i got this right. anyone got a comment feel free to express...
:))
" anyone got a comment feel free to express... "
Will do.
Flash point is the minimum temperature to which a flammable liquid must be heated such that, when mixed with air, it can be ignited, but not continue to burn. In order for that to happen, it would require a sustained application of the ignition source.
The fire point is the temperature at which the combustion will be sustained on its own.
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