True or False: The storage tank vent may be used for filling purposes.

The statement is true because, in certain scenarios, a storage tank vent can be utilized for filling purposes. Vents help maintain appropriate pressure within the tank by allowing air to escape as liquid enters during the filling process. This is crucial to preventing vacuum conditions that could cause structural issues in the tank.

However, it is essential to understand that while using a vent for filling might be considered acceptable in some contexts, it generally needs specific considerations to ensure safety and regulatory compliance. Most standard practices recommend using designated fill openings to avoid potential hazards, such as overfilling or spilling. Therefore, even though using a vent may be technically feasible, it is typically not the recommended method for filling a storage tank.

The context of other options highlights the significance of following industry standards and safety protocols, which often restrict the use of vents for purposes other than their primary function. Proper fill procedures are usually defined in guidelines to avoid risks associated with vapors and pressure imbalances.