TASCO Exit Exam • Set 2 Question 27 of 30
What is lower flammable 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 lowest concentration of a gas in air that can support combustion; below this limit, the mixture is too 'lean' (insufficient fuel) to ignite.
All Options
A
The concentration of a hydrocarbon gas in air below which there is insufficient hydrocarbon to support combustion
(Correct Answer)
B
The limit for man entry of personnel into tanks
C
The limit where there is insufficient oxygen to support combustion
D
The limit where there is too much oxygen to support combustion
Detailed Explanation & Context
The Lower Flammable Limit (LFL) is the lowest concentration of a gas in air that can support combustion; below this limit, the mixture is too 'lean' (insufficient fuel) to ignite.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Oil Tanker Cargo Operations (TASCO).
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