Which type of tank is specifically not intended for loading or unloading vehicles?

A stationary tank is designed for the storage of liquids or gases and is fixed in one location, meaning it is not intended for the loading or unloading of vehicles. This type of tank is typically used for long-term storage and may supply fuel for various applications without being moved. In contrast, portable tanks are designed to be moved and are often used for loading and unloading operations. Emergency shutoff tanks and pressure relief tanks serve different functions related to safety and pressure management, but they also are not designed for loading or unloading vehicles directly. Therefore, the stationary tank distinguishes itself by being dedicated to storage rather than operational use with vehicles.