What is the potential risk of poorly designed fuel tank vent systems?

The potential risk of poorly designed fuel tank vent systems primarily revolves around pressure build-up, which can lead to leaks or even explosions. A fuel tank needs an effective venting system to allow air to escape as fuel is added and to enable proper air exchange when fuel is consumed during operation. If the vent system is inadequate or improperly designed, it can create an environment where pressure increases within the tank as fuel is pumped in or consumed.

This pressure can compromise the integrity of the tank and its seals, leading to leaks, which may not only cause fuel loss but also create hazardous conditions. In extreme cases, if the pressure continues to build without a safe release, it can lead to an explosion, posing serious safety risks to people and property nearby. Hence, ensuring a well-designed venting system is essential for safety in fuel storage and usage.

While fuel contamination, increased fuel consumption, and external corrosion can be concerns in fuel system design, they do not directly stem from the venting process like the risk associated with pressure build-up.