SECTION 7 - TANK GAUGING
คำชี้แจง - ถ้าไม่กรอกทั้งชื่อ และนามสกุลของผู้ทำข้อสอบ ระบบจะไม่ตรวจข้อสอบให้ - ถ้าทำข้อสอบไม่ครบ ระบบจะไม่ตรวจข้อสอบให้ - เกณฑ์ตัดสินผ่านการทดสอบอยู่ที่ร้อยละ 80 หรือ 40 ข้อขึ้นไป
แบบทดสอบนี้ มีจำนวนข้อสอบ 57 ข้อ หากต้องการเพิ่มจำนวนข้อ ให้เลือก เพิ่มจำนวนข้อเป็น 20 ข้อ 30 ข้อ 50 ข้อ

1. 7.55 What is the purpose of a floating roof correction in a shore tank calculation? a. To account for the compression of the liquid due to the roof weight b. To account for the volume of liquid displaced as a result of the weight of the roof c. To allow for the effect of the roof temperature on the temperature of the product d. To allow for the effect of the temperature on the thickness of the roof 2. 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 3. 7.31 To try to ensure gauging accuracy in shore tanks, what is the minimum recommended number of dips/gauges? a. 1 b. 2 identical dips out of three c. 3 identical dips out of 4 d. 4 dips, averaged 4. 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 5. 7.33 The use of non-slotted standpipes is not recommended for custody transfer measurements. a. True b. False c. d. 6. 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 7. 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 8. 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 9. 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 10. 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. 11. 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 12. 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. 13. 7.39 When inspecting Heavy Fuel Oil is it necessary to check for free water? a. Yes b. No 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. 7.38 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% 16. 7.11 What is the distance between the point where the floating roof begins to rest on its normal supports and the point where it begins to float freely known as? a. The floating level b. The lower leg level c. The critical zone d. The displacement level 17. 7.57 When setting a min/max stop gauge an inspector should: a. Make calculations and provide the gauge closest to the requested volume b. Inspector s don t set stop gauges c. Tell the terminal to set the stop and you will check it for accuracy d. Make calculations and provide the gauge closest to the requested volume without exceeding the volume to be transferred 18. 7.01 What is commonly meant by the term dip? a. Ullage b. Innage c. Free water measurement d. Swing gauge 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. 7.16 An ullage gauge is the same thing as an outage gauge. a. True b. False c. d. 21. 7.03 A tank capacity table is also referred to as a tank strapping table a. True b. False c. d. 22. 7.24 Which of the following can affect the accuracy of tank s capacity table? a. The flexing of the tank bottom with the transfer of contents b. Expansion at the vertical middle (barreling) occuring during filling c. Accumulated deposits of previous contents on the tank shell d. Answers a., b. and c. are all correct 23. 7.27 Which industry documents describe the procedures for the gauging of petroleum or petroleum products? a. API MPMS Chapter 17.1/EI HM28 b. API MPMS Chapter 17.9/EI HM49 c. API MPMS Chapter 3/EI HM4 d. API MPMS Chapter 1/EI HM0 24. 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. 25. 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 26. 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 27. 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 28. 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 29. 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 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. 7.05 What does an innage/sounding measure? a. The distance from the surface of the liquid in the tank to the reference gauge point of the tank. b. The distance between the point where the floating roof of the tank is floating freely and the point where it is resting fully on it s supports. c. The level of liquid in a tank measured from the datum plate or tank bottom to the surface of the liquid. d. The distance from the tank datum plate or bottom to the tank reference gauge point. 32. 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. 33. 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. 34. 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 35. 7.02 What occurs when a shore tank is filled to a level in the critical zone? a. The flexing bottom of a tank is at its highest point b. The tank will overflow if more liquid is added c. The floating roof is no longer resting on its legs d. The floating roof is only partially afloat and the capacity table may be inaccurate 36. 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 37. 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. 38. 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 39. 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 40. 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. 41. 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 42. 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 43. 7.10 What is innage or dip? a. The distance from the datum plate or the tank bottom to the surface of the product b. The measurement from the tank bottom to reference point c. The cut found on the bob d. The distance from the reference point to surface of the product 44. 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 45. 7.13 What is a tank datum plate? a. The position on a tank where the gauge height is noted. b. The point marked on the gauge hatch of a tank to indicate the position from which the tank is to be gauged. c. The plate on the tank shell that lists the tank general data such as roof weight, height of tank, etc. d. A plate placed in the tank and directly under the reference gauge point to provide a fixed contact surface. 46. 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. 47. 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 48. 7.15 An innage (dip) tape and bob may be used to take an outage (ullage) gauge. a. True b. False 49. 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 50. 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 ให้ตรวจสอบชื่อนามสกุลว่ากรอกครบหรือไหม่ พร้อมกับตรวจข้อสอบว่าเลือกทำครบทุกข้อหรือไม่ ไม่ครบไม่ตรวจนะครับ

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