LGTCO/LGTF Exit Exam • Set 3 Question 30 of 30

What is known as Inert Gas?

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Direct Answer

Option A: Non-flammable gases containing insufficient oxygen to support combustion

Inert gas is defined as a gas or mixture of non-flammable gases (such as nitrogen or combustion flue gas) containing insufficient oxygen to support the combustion of hydrocarbons.

All Options

Non-flammable gases containing insufficient oxygen to support combustion (Correct Answer)

Flammable gas with concentration between LEL and UFL limits

Flammable gas with concentration above UFL limits

Toxic gas having concentration percentage below TLV-TWA

Detailed Explanation & Context

Inert gas is defined as a gas or mixture of non-flammable gases (such as nitrogen or combustion flue gas) containing insufficient oxygen to support the combustion of hydrocarbons.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Liquefied Gas Tanker Cargo Operations (LGTCO/LGTF).

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Q1 Liquefied gas tankers are categorized as per the cargoes carried, as follows: Q2 There are three types of gas tankers according to the carriage condition, such as: Q3 The cargo area of a gas tanker which is not equipped in an approved manner to ensure that its atmosphere is at all times maintained in a safe manner is a: Q4 A space other than a gas-dangerous space is known as: Q5 Air intakes for accommodation and engine-room have to be at a minimum safe distance from ventilation outlets from: Q6 Can hot work in dangerous and hazardous areas be carried out during cargo, tank cleaning, gas freeing, purging or inerting operations? Q7 Access from a gas-dangerous zone on the open weather deck to a gas-safe space is arranged through: Q8 Airlock doors should be self-closing and must not have hooks or hold-open devices. There should be a minimum distance of at least _____ between both doors. Q9 An audible and visual alarm system gives a warning on both sides of the airlock when: Q10 The gas-safe and airlock spaces within the cargo area have: