Your vessel is carrying 84,000 barrels of oil for discharge. The cargo hoses have an inside diameter of 14 inches. When four hoses are connected to the manifold, the container around the manifold must hold at a minimum how many barrels?
• Oil transfer containment requirements for manifolds (46 CFR – verify current section for oil pollution prevention) • How to find the volume of liquid in a hose using the formula for the volume of a cylinder • How many barrels of oil could be in all connected hoses if they are full
• First, figure out how many feet of hose are assumed for containment calculations and whether the whole hose length or only a certain portion near the manifold is considered by regulation. • Convert the hose’s inside diameter into a cross‑sectional area, then find the total volume for all four hoses and convert that to barrels. • Compare that volume in barrels with the answer choices; which choice best matches or exceeds the volume that could be spilled if all hoses drained into the manifold area?
• Be sure to use the correct inside diameter (14 inches) in your area calculation, not radius by mistake. • Confirm the correct conversion from cubic feet or cubic inches to barrels (1 barrel of oil is 42 gallons). • Verify whether regulations require the containment to hold the entire volume of all connected hoses or some specified minimum based on hose size/number.
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