Regulations require that venting for cargo tanks in which only grades D or E liquids are to be transported shall, as a MINIMUM, be of which type? (tank barge constructed on or after July 1, 1951)

Correct Answer: Option B — Gooseneck vents and flame screens

Title 46 CFR 35.55 requires tank barges constructed after July 1, 1951, carrying Grade D or E liquids to be fitted with gooseneck vents equipped with approved flame screens to prevent flame propagation into the tanks while allowing atmospheric pressure equalization.