OCTCO/OCTF Exit Exam • Set 4 Question 24 of 30
What is the lower flammable limit?
✓
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 hydrocarbon gas in air below which there is insufficient fuel to support combustion (the mixture is too lean).
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 where there is insufficient oxygen to support combustion
C
The limit where there is too much oxygen to support combustion
D
The limit for man entry of personnel into tanks
Detailed Explanation & Context
The Lower Flammable Limit (LFL) is the minimum concentration of hydrocarbon gas in air below which there is insufficient fuel to support combustion (the mixture is too lean).
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Oil and Chemical Tanker Cargo Operations (OCTCO/OCTF).
Advertisement
Practice Full OCTCO/OCTF Set 4
Test yourself with 30 interactive questions, live timer, and instant score.