To comply with the Pollution Prevention Regulations (33 CFR Part 155), regarding fuel oil discharge containment, a vessel of 300 or more but less than 1600 gross tons must have a fixed container or enclosed deck area under or around each fuel oil tank vent that has at least a __________.
• 33 CFR Part 155 requirements for fuel oil discharge containment on smaller inspected vessels • The difference between gallons and barrels as capacity units (1 barrel = 42 U.S. gallons) • How containment capacity is sized relative to the likely volume of a spill at a fuel oil tank vent
• Convert all the answer choices into the same unit (e.g., gallons) so you can compare their actual capacities directly. • Think about a typical fuel oil tank vent on a 300–1600 GT vessel: would regulations likely require a very small, moderate, or fairly large containment capacity to realistically catch an overflow? • Ask yourself which option best reflects a minimum regulatory standard—large enough to be meaningful, but not so large as to be impractical for all vessels in this size range.
• Before choosing, convert each barrel-based option into gallons (multiply by 42) and compare to the 5-gallon option. • Verify in 33 CFR Part 155 which option is stated as the minimum required capacity for the fixed container or enclosed deck area under or around each fuel oil tank vent. • Make sure you are looking specifically at the section that applies to vessels of 300 or more but less than 1600 gross tons, not larger tankships or different vessel categories.
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