Question 1199 Deck General

The correct answer is B) Gooseneck vents fitted with flame screens. The reason this is the correct answer is that barges transporting No. 6 fuel oil, which is a heavy fuel oil, are required to have gooseneck vents fitted with flame screens to prevent the escape of flammable vapors and the entry of flames. This is a safety requirement specified in regulations to mitigate the fire and explosion hazards associated with transporting this type of flammable cargo. The other answer choices, such as pressure-vacuum vents, vent headers, or branch vent lines, are not the correct requirements for this specific application involving the transport of No. 6 fuel oil on a barge.