Question 1449 Deck General

The correct answer is D) Innage. Innage refers to the depth of a petroleum product in a tank, which is measured from the bottom of the tank to the surface of the liquid. This is an important measurement for determining the quantity of product in the tank. The other options are incorrect: A) Ullage refers to the unfilled space above the liquid in a tank. B) Thievage refers to the amount of product lost during transfer or sampling. C) Outage refers to the distance from the tank's rim to the surface of the liquid.