Coast Guard Exams
Question 1126Deck General70% to pass

When referring to quantity of barite in a P-tank, ullage is the _______________.

AI Explanation
The correct answer is D) distance of the barite surface below the tank cover. Ullage refers to the unfilled space in a tank, which is the distance between the surface of the contents (in this case, barite) and the top of the tank. This is the distance of the barite surface below the tank cover. The other options are incorrect because they do not accurately describe the definition of ullage. Option A refers to the distance above the tank bottom, option B is about the total weight of barite, and option C is the percentage of barite, none of which are the definition of ullage.

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