Why does a UEL not burn?

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Prepare for the 92F Petroleum Supply Specialist Test. Utilize flashcards and multiple-choice questions, complete with hints and explanations. Ace your exam now!

Multiple Choice

Why does a UEL not burn?

Explanation:
The key idea is flammability limits. The upper explosive limit marks the point where there’s too much fuel relative to the available oxygen for a flame to be sustained. In a mixture that rich, there aren’t enough oxygen molecules to react with all the fuel, so the chain reactions needed for combustion can’t propagate and the flame can’t burn. So, it’s too rich to burn.

The key idea is flammability limits. The upper explosive limit marks the point where there’s too much fuel relative to the available oxygen for a flame to be sustained. In a mixture that rich, there aren’t enough oxygen molecules to react with all the fuel, so the chain reactions needed for combustion can’t propagate and the flame can’t burn. So, it’s too rich to burn.

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