Which term refers to the depth of a petroleum product in a tank?

The term that specifically refers to the depth of a petroleum product in a tank is innage. This term is used to denote how much product is currently present in the tank, measured from the bottom of the tank to the surface of the liquid. Understanding innage is crucial for tank operations, as it helps operators assess the quantity of product on hand, monitor for leaks, and manage inventory effectively.

Draft relates primarily to the vertical distance between the waterline and the bottom of a ship's hull, which is not relevant to the measurement of liquid depth in a tank. Inlet generally refers to an entry point into a tank or system, often related to the pipe or opening through which liquid is introduced. Outage, on the other hand, is the term used to describe the volume of space in the tank not occupied by liquid, essentially the difference between the tank's total capacity and the actual volume of liquid it contains. While these terms are important in the context of tank management, they do not pertain specifically to the depth measurement of the petroleum product within the tank.