You are preparing to load fuel oil on a vessel of 150 gross tons constructed after June 30, 1974. Before loading, you must check that the fuel oil tank vents __________.
• 46 CFR requirements for fuel oil systems on inspected vessels of 100–400 gross tons • Purpose of fuel oil tank vents and what must be verified before fueling • Role of flame screens and vent openings in preventing fire/explosion hazards
• Ask what could happen if a fuel oil tank vent is blocked or closed during loading. How would pressure in the tank change? • Think about which choice deals directly with the vent’s ability to let vapors and displaced air escape safely, rather than general safety gear or spill control. • Consider the construction date and tonnage given. Which option reflects a permanent design/condition of the vent system rather than temporary equipment you might bring to the area?
• Verify in 46 CFR that fuel oil tank vents must be open and functioning to relieve pressure and vapors during loading. • Check which answer mentions something that is part of the vent system itself (not nearby equipment or cargo placement). • Confirm that the regulation is focused on vent condition and flame protection, not on spill collection capacity or location of fire extinguishers.
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