BIGF Exit Exam • Set 7 Question 30 of 30
What is concentration of a hydrocarbon gas in air below which there is insufficient hydrocarbon to support combustion?
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Direct Answer
Option D: Lower flamable limit
The Lower Flammable Limit (LFL/LEL) represents the minimum volume percentage of fuel vapor in air required to support combustion; below this level the fuel mixture is too lean.
All Options
A
Flash point
B
Gas freeing
C
Flammable range
D
Lower flamable limit
(Correct Answer)
Detailed Explanation & Context
The Lower Flammable Limit (LFL/LEL) represents the minimum volume percentage of fuel vapor in air required to support combustion; below this level the fuel mixture is too lean.
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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