Which of the following statements concerning oil transfer, related equipment, tests and inspections is true?

Correct Answer: Option C — Each nonmetallic oil transfer hose, larger than a 3" inside diameter must be inspected, and tested annually.

33 CFR 156.170 mandates that nonmetallic oil transfer hoses larger than 3 inches in diameter must be inspected and tested annually. This rigorous maintenance schedule ensures the integrity of the hose assembly, as degradation of the reinforcement or internal lining can lead to sudden, high-pressure failure during bunkering.