AIGF Exit Exam • Set 7 Question 12 of 30

In the case of unstable operation on engines when gas firing, the engine shall automatically change to ______________

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Direct Answer

Option C: oil fuel mode

Engine stability is paramount for safety. If the engine monitoring system detects unstable combustion or abnormal parameters while operating on gas, the IGF Code requires an automatic change-over to oil fuel mode. This protects the engine from mechanical damage and prevents the release of unburnt hydrocarbons into the exhaust.

All Options

gas fuel mode

fuel mode

oil fuel mode (Correct Answer)

vapour fuel mode

Detailed Explanation & Context

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 Hybrid turbo charger is useful in __________ Q2 In Requirements for internal combustion engines of Piston type, gas can leak ___________ into the auxiliary system medium Q3 In Requirements for internal combustion engines of Piston type, gas can leak directly into the ______________ Q4 In Requirements for internal combustion engines of Piston type, the gas extracted from ____________are vented to a safe location in the atmosphere. Q5 In Requirements for internal combustion engines of Piston type, the crankcase of a trunk piston type engines are fitted with a means of ______________ Q6 In Requirements for internal combustion engines of Piston type, if combustion has not been detected by the engine monitoring system within an engine specific time after the opening of the fuel supply valve, the ____________________- Q7 In case of shut-off of the gas fuel supply, the engines are capable of continuous operation by ________ only without interruption Q8 An automatic system shall be fitted to change over from __________ Q9 In the case of unstable operation on engines when gas firing, the engine shall automatically change to ______________ Q10 A ship, irrespective of the date of construction, which is converted to __________ for main or auxiliary machinery on or after date of entry into force shall comply with IGF Code