GMA CoC EOOW Practice Questions - Ghana Maritime Authority Certificate Of Competency - Engineer Officer Of The Watch Exam

What is the primary cause of a scavenge space fire in a large two-stroke crosshead marine diesel engine?

Accumulation of unburnt cylinder oil and carbonaceous deposits ignited by blow-by of hot combustion gases. Excessive fuel injection pressure causing cylinder overload. Failure of the piston rod stuffing box gland seals allowing crankcase oil to enter. High exhaust gas backpressure due to a fouled turbocharger nozzle ring.

Correct Answer:

Accumulation of unburnt cylinder oil and carbonaceous deposits ignited by blow-by of hot combustion gases.

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