🔍 Key Concepts

• 33 CFR Part 155 – Oil or Hazardous Material Pollution Prevention Regulations for Vessels (manifold drip pan/fixed container requirements) • How required drip pan capacity is calculated for loading arms/hoses (usually based on nominal pipe size and number of arms/hoses at the manifold) • Unit conversions between barrels and gallons (1 barrel = 42 gallons) and how they may relate to answer choices

💭 Think About

• Identify the specific CFR section that covers fixed containers or enclosed deck areas under loading manifolds for large tank vessels, and see what formula or table it gives for minimum capacity. • Ask: Does the regulation specify capacity per loading arm or per manifold location, and how does the 10-inch nominal diameter and two arms factor into the total? • Compare the capacity you compute from the regulation with the closest multiple of a simple base number in the answer choices to see which one fits the regulatory requirement.

✅ Before You Answer

• Verify in 33 CFR Part 155 the exact wording for "a tank vessel with a total capacity of over 250,000 barrels of cargo oil" and how that affects drip pan/container capacity. • Check whether the regulation uses a formula such as X gallons per inch of nominal pipe size per loading arm, or a fixed minimum capacity for certain vessel size categories. • Confirm your final number in gallons, and then match it carefully to the listed options, watching for simple doubling or scaling based on the number of loading arms.