What is the purpose of the screen fitted in fuel oil tank vents?

The purpose of the screen fitted in fuel oil tank vents is to prevent flames on deck from entering the tank vent. This safety measure is critical, as it helps to minimize the risk of fires and explosions that could otherwise occur if external flames or sources of ignition were to reach the fuel oil tank. The screen acts as a barrier, allowing the venting of gases while still offering a protective function against fire.

This design is especially important on tankers, where the presence of flammable materials requires strict adherence to safety protocols. The vent screens are often constructed in such a way as to allow for sufficient airflow needed for tank ventilation while providing this essential fire protection.