Question 2691 Deck General

The correct answer is D) schedule 80 fire resistant plastic pipe. The fire protection regulations for towing vessels, as outlined in the Code of Federal Regulations (CFR), do not allow the use of schedule 80 fire-resistant plastic pipe for fuel piping. The regulations specify that acceptable materials for fuel piping include nickel-copper, copper-nickel, annealed copper (choice A), and steel (choice C), but not schedule 80 fire-resistant plastic pipe (choice D). Aluminum piping (choice B) is allowed in aluminum-hulled vessels. The reasoning behind this is that plastic piping, even if fire-resistant, may not have the same level of durability and resistance to damage as metal piping, which is essential for the safe handling of flammable fuels on board towing vessels.