SECTION 7 - TANK GAUGING
คำชี้แจง
- ถ้าไม่กรอกทั้งชื่อ และนามสกุลของผู้ทำข้อสอบ ระบบจะไม่ตรวจข้อสอบให้
- ผลสอบจะเก็บเพียง 300 ระเบียนสุดท้าย โดยเรียงจากเวลาล่าสุด
- ถ้าทำข้อสอบไม่ครบ ระบบจะไม่ตรวจข้อสอบให้
- ผู้ทำข้อสอบจะมีเวลาในการทำข้อสอบเพียง 30 นาที หากเกินเวลา ระบบจะไม่ตรวจข้อสอบให้
- เมื่อมีการตรวจคำตอบ ระบบจะบันทึกชื่อ และคะแนนลงฐานข้อมูล พร้อมเวลาเริ่มทำ และเวลาสิ้นสุด
- เกณฑ์ตัดสินผ่านการทดสอบอยู่ที่ร้อยละ 80 หรือ 40 ข้อขึ้นไป
หน้าแรก ข้อสอบใหม่ สร้างใหม่ เฉลยข้อสอบ
หากต้องการพิมพ์ใบรับรองผลคะแนน โปรดใช้เครื่อง Computer ในการทดสอบ
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1. 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.
2. 7.44 How are free water measurements normally taken?
    a. By the innage method
    b. By the ullage method
    c. By the Heimlich method
    d. Answers a. and b. are correct
3. 7.56 What action should an inspector take when requested to set a stop gauge?
    a. Refuse, it s not an inspector s reponsibility
    b. Follow the company s procedure
    c. Set the stop gauge and take full responsibility
    d. Tell the vessel/terminal personnel to set the stop and then check it for accurac
4. 7.06 What does an outage/ullage measure?
    a. The distance from the tank datum plate or bottom to the tank reference point.
    b. The distance from the surface of a liquid in a tank to the reference gauge point of the tank.
    c. The amount of product transferred out from a tank.
    d. The level of liquid in a tank measured from the tank bottom to the surface of the liquid.
5. 7.16 An ullage gauge is the same thing as an outage gauge.
    a. True
    b. False
    c.
    d.
6. 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.
7. 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.
8. 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.
9. 7.04 What is a master tape?
    a. The only tape that may be used to take custody transfer measurements
    b. A tape belonging to the National Certification Body
    c. A tape to be used only for tank calibration
    d. A reference tape, traceable to National Standards to be used only for verifying the accuracy of tapes used in the field
10. 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
11. 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
12. 7.42 How often should a working gauge tape be inspected for wear and tear?
    a. Daily or prior to each use
    b. Once per week
    c. Once per month
    d. Once per year
13. 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.
14. 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.
15. 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
16. 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
17. 7.32 For what reasons may a quantity of free water (water bottoms) be maintained within a shore tank?
    a. To permit easy determination of the shore tank free water quantity.
    b. So that a certain percentage of free water can be pumped with each movement in order to aid in S&W blending of cargoes.
    c. To negate any effect that bottom flexing of the tank bottom would have on tank measured quantities.
    d. To aid in detection of any product seepage from the tank.
18. 7.22 What is the term for the distance from the datum plate or tank bottom to the reference gauge point, as shown on the tank capacity table?
    a. Observed gauge height
    b. Innage gauge height
    c. Reference gauge height
    d. Ullage gauge height
19. 7.54 The floating roof of a shore tank displaces a certain volume of liquid when it is floating freely. What is the weight of the volume of liquid displaced equal to?
    a. The weight of the roof and attached deadwood
    b. The weight of the roof less the attached deadwood
    c. The weight of the roof adjusted for the density of the tank contents
    d. Answers a., b. and c. are all wrong
20. 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
21. 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
22. 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
23. 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
24. 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
25. 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
26. 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.
27. 7.45 When would a check be made for water on the top of a cargo?
    a. If the observed density is less 1000 kg/m3 [observed API gravity greater than 10.0]
    b. If the observed density is greater 1000 kg/m3 [observed API gravity less than 10.0]
    c. It is never necessary to check for the presence of water on top of a cargo
    d. Only for fuel oil cargoes
28. 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
29. 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
30. 7.52 What do slip-tube gauging devices on rail tank cars measure?
    a. Any liquid in the tank car deeper than 75 mm [3 ]
    b. Any liquid under positive pressure in a tank car
    c. Any vapour in a tank car
    d. Any vapour with a depth greater than 1.2 m [4 feet]
31. 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
32. 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