AIGF Exit Exam • Set 3 Question 1 of 30

What type of gas detector is preferred for hydrocarbon gas detection in inert atmospheres?

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Direct Answer

Option C: Infrared (IR) gas detector

Infrared (IR) gas detectors are preferred for hydrocarbon detection in inert atmospheres because they do not require oxygen to function, unlike catalytic bead sensors. This makes them highly reliable for monitoring spaces where nitrogen or other inert gases are present, ensuring accurate detection of potential LNG leaks.

All Options

A

Catalytic bead detector

B

Flame ionization detector

C

Infrared (IR) gas detector (Correct Answer)

D

Electrochemical cell

Detailed Explanation & Context

Infrared (IR) gas detectors are preferred for hydrocarbon detection in inert atmospheres because they do not require oxygen to function, unlike catalytic bead sensors. This makes them highly reliable for monitoring spaces where nitrogen or other inert gases are present, ensuring accurate detection of potential LNG leaks.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Ships subject to the IGF Code (AIGF).

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