A term used to describe the process by which petroleum liquids are transferred from a tanker truck into a storage tank.
Typically, when product is offloaded from a tank vehicle to a storage tank, a 4-inch-diameter hose connection is made between the vehicle and the fill pipe in the tank. If the tank is underground, the offloading is usually accomplished through gravity flow. If the tank is aboveground, the liquid must be moved by a pump, located either on the tank vehicle or in the area adjacent to the tank.
