SECTION 7 - TANK GAUGING
คำชี้แจง - ถ้าไม่กรอกทั้งชื่อ และนามสกุลของผู้ทำข้อสอบ ระบบจะไม่ตรวจข้อสอบให้ - ถ้าทำข้อสอบไม่ครบ ระบบจะไม่ตรวจข้อสอบให้ - เกณฑ์ตัดสินผ่านการทดสอบอยู่ที่ร้อยละ 80 หรือ 24 ข้อขึ้นไป
แบบทดสอบนี้ มีจำนวนข้อสอบ 57 ข้อ หากต้องการเพิ่มจำนวนข้อ ให้เลือก เพิ่มจำนวนข้อเป็น 20 ข้อ 30 ข้อ 50 ข้อ

1. 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. 2. 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 3. 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 4. 7.16 An ullage gauge is the same thing as an outage gauge. a. True b. False c. d. 5. 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 6. 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 7. 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 8. 7.15 An innage (dip) tape and bob may be used to take an outage (ullage) gauge. a. True b. False 9. 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 10. 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 11. 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 12. 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. 13. 7.03 A tank capacity table is also referred to as a tank strapping table a. True b. False c. d. 14. 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. 15. 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 16. 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 17. 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 18. 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 19. 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 20. 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. 21. 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 22. 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 23. 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. 24. 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 25. 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 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. 7.38 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% 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. 7.32 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. 30. 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 ให้ตรวจสอบชื่อนามสกุลว่ากรอกครบหรือไหม่ พร้อมกับตรวจข้อสอบว่าเลือกทำครบทุกข้อหรือไม่ ไม่ครบไม่ตรวจนะครับ

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