The primary function of a "flue gas type" inert gas system is to _________.

Correct Answer: Option D — supply conditioned gas with reduced oxygen content

Flue gas inert gas systems utilize boiler exhaust, which is scrubbed and cooled to remove soot and sulfur oxides. The primary objective is to reduce oxygen content below 5% to maintain an inert atmosphere in cargo tanks, preventing combustion by displacing oxygen with non-flammable, conditioned combustion gases.