Flammability Diagram for t he System Met haneOxygenNitrogen at

The diagram given above (Flammability Composition Diagram) can be considered the most important diagram to understand the concept of flammability. Hydrocarbon gas normally encountered in petroleum tankers cannot burn in an atmosphere containing less than approximately 11% oxygen by volume.. Bloggingsailor is a renowned blogger site to know about the flammability, flammable range and diagram. Explore our site for detailed information.

Triangular diagram showing all possible mixtures of methane, oxygen and nitrogen. Any mixture of methane and air will lie on the blue air-line Any stoichiometric mixture of methane and oxygen will lie on the red stoichiometric line The actual flammability envelope defining flammable mixtures of methane Same diagram, but with alternative axis layout. A flammability diagram shows the flammability region in mixtures of fuel, oxidant (usually oxygen) and an inert gas (usually nitrogen). If the oxidant concentration is reduced, the range of flammability is also reduced i.e. the difference between the upper explosible limit and lower explosible limit becomes smaller.