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SECTION 7 - TANK GAUGING

1. 7.07 What is water finding paste used for?
. a. To determine the S&W of the product in the tank
. b. To detect the presence of suspended water within the product in the tank
. c. To indicate the product / free water interface within the tank
. d. Answers a., b. and c. are all wrong
2. 7.47 If during gauging, the water cut falls on the clip of the gauge tape, what must be done?
. a. Repeat the water cut measurement using a water bar
. b. Repeat the water cut taking an ullage of the water
. c. Interpolate the cut
. d. Answers a. and b. are correct
3. 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.
4. 7.51 If a tank s capacity table is an innage or dip table, what is the preferred method of gauging?
. a. Side Gauge
. b. Ullage
. c. Innage or dip
. d. Outage
5. 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.
6. 7.14 When rainwater or snow accumulates on the roof of an external floating roof tank, what will happen to the gauged level in the tank?
. a. It will decrease
. b. It will remain the same
. c. It will increase
. d. Answers a., b. and c. are all wrong
7. 7.49 When is a provisional gauge or insurance gauge taken prior to the official gauge?
. a. When the official gauge will not be taken for a significant period of time after completion of cargo operations.
. b. When it is required by your employer s insurance company
. c. When it is required by the Charter Party
. d. Answers a., b. and c. are all correct
8. 7.36 When gauging a shore tank the tape should be read to the nearest 6mm [1/4 inch]?
. a. True
. b. False
. c.
. d.
9. 7.41 According to common industry practice, How often must a gauging tape be checked for accuracy by comparison against a traceable master tape?
. a. Prior to each use
. b. Every six months
. c. Prior to initial use and at least annually
. d. At least once per week
10. 7.37 Can accurate volumes be obtained by gauging a tank while the roof is in the critical zone?
. a. Yes, when the tank legs are on low setting
. b. Yes, when the tank legs are on high setting
. c. No, it cannot be done
. d. No, unless it is an internal floating roof
11. 7.28 When gauging light products, it is permissible to use chalk or talcum powder to facilitate reading the cut on the tape.
. a. True
. b. False
. c.
. d.
12. 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.
13. 7.53 When inspecting a series of rail tank cars the liquid outage/ullage level must be measured in all cars
. a. True
. b. False
. c.
. d.
14. 7.01 What is commonly meant by the term dip?
. a. Ullage
. b. Innage
. c. Free water measurement
. d. Swing gauge
15. 7.25 If a portable measurement unit (PMU) is used, which of the following procedures should be followed to measure free water on a vessel before discharge?
. a. Rely on the PMU alone for free water level measurement
. b. Use water-finding paste with a sounding rod/rule or dip tape
. c. Answers a. and b. are both correct
. d. Recommend to the terminal that the free water received and measured ashore be applied to the vessel figures
16. 7.35 When gauging a tank by the innage method, a comparison between the observed and reference gauge height is made to ensure which of the following?
. a. The gauge tape and bob are suspended in a vertical position within the tank.
. b. The gauge bob is in contact with the tank bottom or datum plate
. c. The tape has not been lowered too far into the tank
. d. Answers a., b. and c. are all correct
17. 7.38 If there is a discrepancy between Reference Gauge Height and Observed Gauge Height when gauging a shore tank what action should be taken?
. a. Adjust the gauge to observed reference height
. b. Ullage the tank
. c. Recheck the gauge, make a note of the difference and inform your supervisor
. d. The difference can be ignored it as long as the ship to shore difference does not exceed 0.5%
18. 7.23 When taking a level measurement three gauge tape readings should be within___
. a. 12mm or 1/2 inch
. b. 6mm or 1/4 inch
. c. 3mm or 1/8 inch
. d. 9mm or 1/3 inch
19. 7.29 When using water finding paste in light products, how long should the gauging bar be left in position?
. a. A minimum of 5 seconds
. b. A minimum of 10 seconds
. c. A minimum of 30 seconds
. d. A minimum of 45 seconds
20. 7.48 What is the minimum amount of time the bob should stay in position while water cutting a heavy crude oil?
. a. 10 seconds
. b. 30 seconds
. c. 60 seconds
. d. There is no set time

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