What is the purpose of a fuel-oil vent?

What is the purpose of a fuel-oil vent?

• A. To allow fuel to expand
• B. To allow air to escape from the tank as fuel is drawn out
• C. To regulate the temperature of the fuel
• D. To prevent over-pressurization of the system

Answer: (B)

A fuel-oil vent serves a vital role in the operation of a fuel storage system by allowing air to escape from the tank as fuel is drawn out. When fuel is withdrawn from the storage tank, it creates a partial vacuum inside the tank due to the reduction of liquid volume. This situation can lead to a scenario where the tank could potentially collapse due to the lack of air pressure. The vent provides an outlet for displaced air to exit, ensuring that the pressure inside the tank remains balanced with the external atmosphere. This function is essential for maintaining the structural integrity of the tank and preventing any environmental hazards that could arise from malfunctions. Other options may touch upon important aspects of fuel management, but they do not specifically address the fundamental purpose of the fuel-oil vent in maintaining pressure balance during fuel transfer operations.

A fuel-oil vent serves a vital role in the operation of a fuel storage system by allowing air to escape from the tank as fuel is drawn out. When fuel is withdrawn from the storage tank, it creates a partial vacuum inside the tank due to the reduction of liquid volume. This situation can lead to a scenario where the tank could potentially collapse due to the lack of air pressure. The vent provides an outlet for displaced air to exit, ensuring that the pressure inside the tank remains balanced with the external atmosphere. This function is essential for maintaining the structural integrity of the tank and preventing any environmental hazards that could arise from malfunctions.

Other options may touch upon important aspects of fuel management, but they do not specifically address the fundamental purpose of the fuel-oil vent in maintaining pressure balance during fuel transfer operations.