Question 1182 Deck General

The correct answer is C) flammable vapors from entering machinery space. The deck seal in an inert gas system is designed to prevent flammable vapors from entering the machinery space. This is a critical safety feature, as the inert gas system is used to maintain a non-flammable atmosphere in the cargo tanks, preventing the risk of explosions or fires. The other options are incorrect because: A) the inert gas system is designed to prevent air from entering, not the other way around; B) the flue gas is not the primary concern of the deck seal; and D) the deck seal is meant to contain the inert gas within the system, not allow it to escape to the atmosphere.