LGTCO/LGTF Exit Exam • Set 6 Question 9 of 30
What is the primary purpose of inerting on a liquefied gas carrier?
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Direct Answer
Option A: To prevent flammable vapour/air mixtures in cargo tanks and associated piping
The primary objective of inerting is to displace oxygen or flammable gas with an inert medium (such as nitrogen or flue gas) to ensure that the atmosphere in tanks and piping remains non-flammable at all times.
All Options
A
To prevent flammable vapour/air mixtures in cargo tanks and associated piping
(Correct Answer)
B
To increase oxygen content in vapour/air mixtures in tanks
C
To increase hydrocarbon concentration in vapour/air mixtures
D
To pressurize cargo tanks for deepwell pump suction
Detailed Explanation & Context
The primary objective of inerting is to displace oxygen or flammable gas with an inert medium (such as nitrogen or flue gas) to ensure that the atmosphere in tanks and piping remains non-flammable at all times.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Liquefied Gas Tanker Cargo Operations (LGTCO/LGTF).
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