AIGF Exit Exam • Set 9 Question 7 of 30

LNG fuel should have after treatment systems like ___________

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Direct Answer

Option A: oxidation catalyst

Methane oxidation catalysts (MOC) are exhaust aftertreatment devices designed to oxidize residual unburned methane (methane slip) in lean-burn gas engine exhausts.

All Options

oxidation catalyst (Correct Answer)

nitrogen catalyst

hydrogen catalyst

helium catalyst

Detailed Explanation & Context

Methane oxidation catalysts (MOC) are exhaust aftertreatment devices designed to oxidize residual unburned methane (methane slip) in lean-burn gas engine exhausts.

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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Q1 Speed recovery solutions can save fuel upto Q2 Coating is done to reduce ___________ Q3 ________ is an engine for reduction of the vessels maximum speed to increase the efficiency by limiting the potential power output Q4 LNG fuel should have after treatment systems like ___________ Q5 _______ should have after treatment systems like oxidation catalyst Q6 Slow steaming is otherwise called Q7 The cooling jacket of a hybrid turbo charger is made up of which material Q8 GCU means ___________________ Q9 _____________ utilized for gas freeing of tanks may be provided externally to the ship. Q10 Spaces surrounding fuel tanks is filled with which type of air?