BIGF Exit Exam • Set 7 Question 29 of 30
What is lower flamable limit?
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Direct Answer
Option A: The concentration of a hydrocarbon gas in air below which there is insufficient hydrocarbon to support combustion.
The Lower Flammable Limit (LFL) is the minimum concentration of flammable vapor in air below which the mixture is too lean to ignite or sustain combustion.
All Options
A
The concentration of a hydrocarbon gas in air below which there is insufficient hydrocarbon to support combustion.
(Correct Answer)
B
The concentration of a carbon gas in air below which there is insufficient hydrocarbon to support combustion.
C
The concentration of a hydrogen gas in air below which there is insufficient hydrocarbon to support combustion.
D
The concentration of a nitrocarbon gas in air below which there is insufficient hydrocarbon to support combustion.
Detailed Explanation & Context
The Lower Flammable Limit (LFL) is the minimum concentration of flammable vapor in air below which the mixture is too lean to ignite or sustain combustion.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Basic Training for Ships subject to the IGF Code (BIGF).
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