SECTION 8 – TEMPERATURE MEASUREMENT

คำชี้แจง - ถ้าไม่กรอกทั้งชื่อ และนามสกุลของผู้ทำข้อสอบ ระบบจะไม่ตรวจข้อสอบให้ - ส่วนนี้จะไม่มีการบันทึกผลสอบ หากต้องการบันทึกโปรดสมัครสมาชิก - ถ้าทำข้อสอบไม่ครบ ระบบจะไม่ตรวจข้อสอบให้ - ผู้ทำข้อสอบจะมีเวลาในการทำข้อสอบเพียง 30 นาที หากเกินเวลา ระบบจะไม่ตรวจข้อสอบให้ - เกณฑ์ตัดสินผ่านการทดสอบอยู่ที่ร้อยละ 80 หรือ 24 ข้อขึ้นไป

ส่วนนี้จะไม่มีการบันทึกผลสอบ และแสดงเฉลยแบบทดสอบ หากต้องการบันทึก และรายงานการทำแบบทดสอบ โปรดสมัครสมาชิก

1. 8.52 What procedure is used to field check a liquid-inglass thermometer in a cupcase assembly? a. It is checked against a portable electronic thermometer b. It is checked it against the ship’s thermometer c. it is checked for cracks, cleanliness and a readable scale and the liquid column is checked as unbroken d. It is placed in a 100°F water bath with a certified thermometer for 45 minutes and compare the readings. They must be within 0.2°C [0.1°F] 2. 8.17 If a tank has more than 4.5 m [15 feet] of liquid, what is the minimum number of temperature readings that must be taken? a. 3 b. 5 c. 1 d. one every 1 m [3 feet] 3. 8.51 The immersion time for a cup-case assembly is minimized by continually raising and lowering the assembly 0.3m [1 foot] above and below the desired temperature measurement point. a. True b. False c. d. 4. 8.19 The quickest way to stabilize the reading from a portable electronic thermometer (PET) is to? a. Allow the probe to stay in the product for twice the required time b. Move the probe up and down at least 30 cm [1 foot] above and below the spot the temperature is to be taken c. Use fresh batteries d. There is no way to speed up the stabilization process 5. 8.49 What temperature is to be used during an ROB survey if there is only 5 cm [2 inches] of liquid in the bottom of the tank? a. The measured temperature at the middle of the liquid b. Standard Temperature c. The average temperature of the product in the tank before it was discharged d. The temperature stated by the vessel s representative 6. 8.25 According to API MPMS Chapter 7 the minimum amount of time that an in motion probe should stay in a product with an API gravity less than 20 is? a. 80 minutes b. 30 minutes c. 75 seconds d. 10 seconds 7. 8.39 An ASTM 59C [ASTM 59F-80] liquid-in-glass thermometer has a scale range of -18°C to 82°C [0°F-180°F]. What should the graduations on this thermometer be? a. 0.1°C [0.2°F] b. 0.25°C [0.5°F] c. 1.0°C [2.0°F] d. 0.5°C [1.0°F] 8. 8.20 What is the minimum amount of product needed for a temperature to be taken? a. Whenever there is sufficient material present to immerse the probe b. 30 cm [1 foot] c. One metre [3 feet] d. Temperatures should only be taken when the roof is floating freely 9. 8.38 How should scale graduation marks be applied to a liquid-in-glass thermometer? a. They must be etched permanently on the stem of the thermometer b. They must be etched permanently on the cup-case assembly c. They must be on a metal plate attached to either the thermometer or the cup-case assembly d. Answer a., b. or c. is correct 10. 8.36 A liquid-in-glass thermometer with a range between 60°F and 180°F and must be accurate to within? a. ± 1.0 °F b. ± 0.5 °F c. ± 0.1 °F d. ± 0.25 °F 11. 8.15 What information must be recorded when taking a temperature of a cargo using an in-line probe ? a. The last calibration date b. The serial number of the unit being used c. The last two times the probe was checked for accuracy d. Answers a., b. and c. are all wrong 12. 8.02 Does API MPMS Chapter 7/ISO 4268 make any references to the construction of portable electronic thermometers? a. Yes b. No c. d. 13. 8.33 When using a portable electronic thermometer, what is the minimum amount of time the probe must stay in a middle distillate of density 821.7 kg/m3 [API gravity 40.7] , if the probe is moving? a. 30 seconds b. 1 minute c. 2 minutes d. 5 minutes 14. 8.40 When first received from the manufacturer or equipment supplier, what should happen to a new liquid-in-glass tank thermometer? a. It can be used immediately because the manufacturer calibrates the thermometer before it is shipped b. It must be checked to see that the liquid column is intact, then it may be used since the manufacturer will have calibrated the thermometer. c. It must be checked to see that the glass stem is not cracked or broken, then it may be used since the manufacturer will have calibrated the thermometer d. It must be compared against a thermometer certified by a National Standard body or an equivalent thermometer of traceable accuracy. 15. 8.24 According to ISO 4268 [API Chapter 7] the minimum amount of time a stationary PET should stay in a product with a density greater than 935 kg/m3 is ? a. 10 minutes b. 1 minute c. 5 minutes d. Until the readout doesn t vary by more than 0.1°C [0.2°F] for 30 seconds 16. 8.32 When taking temperatures for ROB, OBQ or slops containing oil and water it is important ____ a. That the probe doesn t touch the steam coils b. That the tank is corrected for list / trim c. That the probe is placed at the mid-point of the oil or the oily layer d. That only a middle temperature is taken for slops 17. 8.14 When using a liquid-in-glass thermometer it is important to consider that a. It should remain in the oil long enough to reach the temperature of the liquid b. It takes longer to obtain temperatures with a liquid in glass thermometer than a portable electronic thermometer c. It should be lowered using a gauging tape d. Answers a. and b are correct 18. 8.21 To what increment should a portable electronic thermometer be read and recorded? a. The nearest 0.5°C or °F b. The nearest 1°C or °F c. The nearest 0.1°C or °F d. Answers a.,b. and c. are all wrong. 19. 8.08 To what precision should temperatures obtained using portable electronic thermometers be read and recorded? a. To the nearest 0.1 °F or °C b. To the nearest 0.5 °F or °C c. To the nearest 1.0 °F or °C d. To the nearest 1.5 °F or °C 20. 8.22 According to common industry practice how should the working spot check (field check) of a portable electronic thermometer be performed? a. Daily comparison to another portable electronic thermometer b. By comparing it to a liquid-in-glass thermometer, before each use or once per day c. By checking the unit weekly, for accuracy d. Calibrate against a thermometer (traceable to national standards) at prescribed intervals 21. 8.04 Why do portable electronic thermometers have low-voltage indicators? a. So that it will not fail half way through the inspection b. The unit could give false readings if the battery is low c. If the voltage drops, the night-light will not work d. Most portable electronic thermometers do not have an indicator 22. 8.23 Liquid-in-glass thermometers are suitable for use in obtaining cargo product temperatures in marine vessels required to operate with closed or restricted systems? a. True b. False c. d. 23. 8.45 What is the minimum number of temperatures to be taken in a tank containing less than 3m [10 feet] of product? a. 1 b. 3 c. 5 d. 2 24. 8.48 What is the recommended immersion time, for a liquid-in-glass thermometer in a cup-case assembly, in motion, in a product with density of 950 kg/m3 [API gravity 17.4] a. 45 minutes b. 10 minutes c. 20 minutes d. Until the readout doesn t vary by more than 3.0 °C for 30 seconds 25. 8.36 A liquid-in-glass thermometer with a range between 60°F and 180°F and must be accurate to within? a. ± 1.0 °F b. ± 0.5 °F c. ± 0.1 °F d. ± 0.25 °F 26. 8.46 When taking the temperature of a product in a tank and there is more than 1°C [2 °F] difference between upper, middle and lower temperatures, what steps should be taken? a. Retake the temperatures since there must be an error b. Use the middle temperature only for the entire tank contents c. Average the upper, middle and lower temperatures d. Take temperatures at more frequent, equally-spaced vertical increments 27. 8.05 How does calibration of a portable electronic thermometer differ from a field check? a. It is done by the responsible manager b. It is performed by a certified third party auditor c. It is verified in controlled conditions against a standard thermometer traceable to national standards d. There is no difference between the two 28. 8.09 What is the minimum acceptable accuracy for a portable electronic thermometer when it is indicating a temperature reading of 101 °C [215°F]? a. ± 1.0 °C [2.0°F] b. ± 0.5 °C [1.0°F] c. ± 0.3 °C [0.5°F] d. ± 0.75 °C [1.5°F] 29. 8.26 If a tank has an innage of 2,8m [9 11 ] what is the minimum number of temperatures which should be taken? a. One b. Two c. Three d. None 30. 8.53 What is the purpose of keeping the probe of a portable electronic thermometer (PET) in motion? a. To ensure the unit is calibrated b. To stir the product c. To minimize temperature stabilization time d. To prevent the probe becoming caught up in the tank ladder ให้ตรวจสอบชื่อนามสกุลว่ากรอกครบหรือไหม่ พร้อมกับตรวจข้อสอบว่าเลือกทำครบทุกข้อหรือไม่ ไม่ครบไม่ตรวจนะครับ

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