1. 2.04 What is a permanent ballast tank?1) a. A tank that contains ballast at all times
2) b. A tank that is designated to contain only ballast
3) c. A tank that is used only to maintain a permanent list condition
4) d. Answers a., b. and c. are all wrong
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2. 2.22 What is a floating roof tank?1) a. A tank in which the roof floats freely on the surface of the liquid contents at all levels.
2) b. A tank in which the roof floats freely on the surface of the liquid contents except at low levels when the weight of the roof is supported by its legs.
3) c. A tank in which the roof, supported by guide wires, can be adjusted to the required height for safe filling of the tank
4) d. Answers a., b. and c. are all wrong
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3. 2.09 What is a datum plate?1) a. A level metal plate located directly under the reference gauge point to provide a fixed contact surface from which liquid depth measurement can be made.
2) b. A metal plate located next to the gauging point on a tank indicating the reference gauge height.
3) c. A metal plate located close to the gauging point on a tank listing all the relevant tank data
4) d. A level metal plate located at the top of a gauge hatch on a tank from which the gauge height is measured.
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4. 2.30 What is ullage?1) a. The depth of the empty space above the liquid in a tank
2) b. The height of the free water in a tank
3) c. The length of an ullage tape
4) d. The depth of the liquid in a tank
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5. 2.36 How is Gross Observed Volume (GOV) defined?1) a. The volume read from the strapping table
2) b. The total volume of all petroleum liquids and sediment and water, excluding free water, at observed temperature and pressure
3) c. The volume read from the strapping table corrected for roof displacement
4) d. The volume used to calculate vessel ratios
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