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SECTION 7 - TANK GAUGING

1. 7.15 An innage (dip) tape and bob may be used to take an outage (ullage) gauge.
. a. True
. b. False
.
.
2. 7.39 When inspecting Heavy Fuel Oil is it necessary to check for free water?
. a. Yes
. b. No
. c.
. d.
3. 7.40 If the density of a product within a tank is greater than the density of water, where would any free water in this tank be found?
. a. No free water would be found it as it would not settle out of this product but would remain in suspension
. b. On top of the product
. c. Below the product
. d. Answers a., b. and c. are all wrong
4. 7.01 What is commonly meant by the term dip?
. a. Ullage
. b. Innage
. c. Free water measurement
. d. Swing gauge
5. 7.33 The use of non-slotted standpipes is not recommended for custody transfer measurements.
. a. True
. b. False
. c.
. d.
6. 7.50 What is one of the problems with water finding paste?
. a. It tends to freeze in cold weather
. b. It does not perform consistently with all crudes
. c. Tends to run down the bob
. d. It is easily confused with gasoline paste
7. 7.34 When gauging a terminal storage tank prior to loading a barge, an inspector notes that his observed gauge height does not match the reference gauge height. On gauging the same tank on completion of loading the barge he again observes the same difference in observed and reference gauge heights, such that both opening and closing observed gauge height readings are identical. Can the gauges obtained be used for determining the loaded volume?
. a. Yes
. b. No
. c.
. d.
8. 7.26 To determine the ullage of the liquid in a tank using an innage tape and bob assembly, what procedure should be followed?
. a. Read the immersion depth of the tape at the reference gauge point and subtract the oil cut reading on the bob
. b. Read the immersion depth of the tape at the reference gauge point and add the oil cut reading on the bob
. c. Subtract the oil cut on the bob from the tank reference gauge height indicated on the tank capacity table
. d. Subtract the oil cut on the bob from the measured tank reference gauge height
9. 7.30 When using water finding paste in heavy oils, which of the following actions should you take to enable the paste to be read more easily?
. a. Gently blowing on the gauging bar to remove the heavy oil.
. b. Use a soft cotton rag or towel to remove the excess oil
. c. Use a suitable solvent to gently wash to the surface of the paste.
. d. Immerse the gauging bar in a container full of light product such as gasoline.
10. 7.12 On a shore tank, what is the term for the distance between the Reference Gauge Point and the Datum Point, as measured at the time of gauging?
. a. Observed reference point
. b. Reference gauge height
. c. Total gauge height
. d. Observed reference height
11. 7.21 What is the measured distance from the datum plate or tank bottom to the reference gauge point called?
. a. The observed reference height
. b. The innage gauge height
. c. The reference gauge height
. d. The ullage gauge height
12. 7.43 Which of the following statements regarding reference gauge heights is correct?
. a. They should be recorded from the calibration tables, before you start the tank gauging
. b. They should be checked against the observed gauge heights
. c. They should be included in the inspection report
. d. Answers a., b. and c. are all correct
13. 7.08 An innage gauge bob is pointed to aid in penetration of tank non-liquid. Where is its zero point?
. a. Top of the eye
. b. Bottom of the eye
. c. Tip of the bob
. d. Inside of the tape swivel
14. 7.46 Which of the following is acceptable for the determination of free water for marine vessel custody transfer measurements?
. a. A zone sampler
. b. A portable measurement unit (PMU)
. c. A bob with water-finding paste
. d. Answers b. and c. are correct
15. 7.17 According to API MPMS Chapter 3.1A/EI HM4, when must gauge tapes be verified for accuracy?
. a. Before initial use and once per year
. b. Once per month
. c. Before each use
. d. Once every three months
16. 7.20 Which gauge measures the distance from the surface of the liquid to the tank reference gauge point?
. a. Innage or dip
. b. Ullage
. c.
. d.
17. 7.19 Which gauge measures the distance from the datum plate or tank bottom to the surface of the liquid?
. a. Innage
. b. Ullage
. c.
. d.
18. 7.03 A tank capacity table is also referred to as a tank strapping table
. a. True
. b. False
. c.
. d.
19. 7.09 What is the observed gauge height of a tank?
. a. The distance from the reference gauge point to the bottom of the tank or the datum plate as measured during the gauging operation
. b. The distance from the reference gauge point to the bottom of the tank or the datum plate as shown on the tank capacity tables
. c. The distance from the ullage pipe to the liquid level
. d. Usually written somewhere on the ullage pipe
20. 7.18 Some measurement systems are gas-tight (closed) and other systems (restricted) permit some vapour to escape around the Portable Measurement Unit (PMU) when tanks are under positive pressure.
. a. True
. b. False
. c.
. d.

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