🔍 Key Concepts

• 46 CFR Part 56 – Piping systems and fuel oil system requirements • Purpose of fuel oil tank vents (pressure equalization and safe release of vapors) • Hazards of obstructed vents during fuel transfer operations

💭 Think About

• Think about what could happen to a fuel tank during loading if its vent could not freely relieve pressure or vapors. Which choice addresses that risk most directly? • Which option describes something that must be true at all times during loading, not just an added safety item or something that would actually increase fire risk? • Look at each choice and ask: Does this help vapors escape safely and prevent overpressure, or does it create a new hazard or contradict fire-safety principles?

✅ Before You Answer

• Verify which option ensures unrestricted venting and vapor dispersal during loading operations. • Check whether any option suggests removing flame screens or safety devices, and think if that would ever be allowed during fuel transfer. • Confirm that any requirements about equipment “within the area” or “fixed containment” actually appear in fuel vent regulations, not in unrelated pollution-control or firefighting rules.