GASCO Exit Exam • Set 3 Question 9 of 30

The concentration of a hydrocarbon gas is air below which there is insufficient hydrocarbon is called

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Direct Answer

Option A: Lower flammable limit

The Lower Flammable Limit (LFL/LEL) is the minimum concentration of flammable gas/vapor in air below which the mixture is too lean to ignite.

All Options

Lower flammable limit (Correct Answer)

Dry air

Upper flammable limit

Stoichiometric ratio

Detailed Explanation & Context

The Lower Flammable Limit (LFL/LEL) is the minimum concentration of flammable gas/vapor in air below which the mixture is too lean to ignite.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Liquefied Gas Tanker Cargo Operations (GASCO).

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