- ถ้าไม่กรอกทั้งชื่อ และนามสกุลของผู้ทำข้อสอบ ระบบจะไม่ตรวจข้อสอบให้
- ผลสอบจะเก็บเพียง 300 ระเบียนสุดท้าย โดยเรียงจากเวลาล่าสุด
- ถ้าทำข้อสอบไม่ครบ ระบบจะไม่ตรวจข้อสอบให้
- ผู้ทำข้อสอบจะมีเวลาในการทำข้อสอบเพียง 30 นาที หากเกินเวลา ระบบจะไม่ตรวจข้อสอบให้
- เมื่อมีการตรวจคำตอบ ระบบจะบันทึกชื่อ และคะแนนลงฐานข้อมูล พร้อมเวลาเริ่มทำ และเวลาสิ้นสุด
- เกณฑ์ตัดสินผ่านการทดสอบอยู่ที่ร้อยละ 90 หรือ 45 ข้อขึ้นไป
หน้าแรก ข้อสอบใหม่ สร้างใหม่ เฉลยข้อสอบ
หากต้องการพิมพ์ใบรับรองผลคะแนน โปรดใช้เครื่อง Computer ในการทดสอบ
INSERT เกิดข้อผิดพลาด You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'lower' sample is taken from?', 'a. The bottom of the tank','b. Just above the wa' at line 1
1. 6.46 Before taking a line sample it is important to?
    a. Ground your equipment
    b. Flush the tap and sample line until they are purged
    c. Call your supervisor
    d. Answers a., b. and c. are all correct
2. 6.32 For a running sample to be taken correctly, the sample container must be?
    a. At least half full
    b. A zone sampler
    c. A bottle and cage
    d. Approximately 70% to 85% full
3. 6.45 When taking liquid samples for hydrogen sulphide testing in accordance with IP 570 [ASTM D7621] what is the approximate level to which sample containers must be filled?
    a. 50%
    b. 80%
    c. 95%
    d. 100%
4. 6.78 Why is it important to label all samples as soon as possible?
    a. National and/or local Government regulations require it.
    b. An incorrectly labeled sample could generate a legal action
    c. It is easy to label samples incorrectly if they are not labelled promptly
    d. Answers a., b. and c. are all correct
5. 6.27 When sampling heavy fuel oil, crude oil or petroleum products in a tank with non-liquid or sediment deposits on the bottom, why may manual samples not be representative?
    a. Because the material may be non-homogeneous
    b. Because the concentration of entrained water is higher near the bottom
    c. Because the interface between the oil and water is difficult to measure accurately
    d. Answers a., b. and c. are all correct
6. 6.38 When taking a first foot sample of a jet fuel cargo it is recommended to
    a. Use a clear bottle
    b. Use only steel sampling cans
    c. Use only a clean zone sampler
    d. Use an amber bottle
7. 6.71 The controller on an automatic sampler is a device that governs the operation of the sample extractor.
    a. True
    b. False

8. 6.37 Since the volume of material in the tank does not affect laboratory analysis, tanks that are sampled do not need to be gauged.
    a. True
    b. False

9. 6.59 Which of the following statements about upper, middle, and lower samples is correct?
    a. They can be taken in any order.
    b. They must be taken in the order lower, middle, upper.
    c. They must be taken in the order upper, middle, lower.
    d. They are less reliable than an all-levels sample, no matter how they are taken
10. 6.47 During preliminary sampling of a shore tank that will be used to load a vessel, you should also obtain a tape or side gauge reading.
    a. True
    b. False

11. 6.63 When drawing upper-middle-lower samples from any tank, which sample should be taken last?
    a. Lower
    b. Middle
    c. Upper
    d. It doesn t matte
12. 6.62 When upper-middle-lower samples are taken from a tank, what point is the upper sample taken from?
    a. 1/3 of the liquid height from the tank bottom
    b. At the middle of the tank outlet fitting
    c. At the middle of the upper third of the tank contents
    d. 15 cm [6 inches] off the tank bottom
13. 6.36 What laboratory test will most likely be affected by not using dedicated sampling equipment for individual products or product groups?
    a. colour
    b. flashpoint
    c. sulphur
    d. Answers a., b. and c. are all correct
14. 6.34 When sampling a shore tank containing a product with an observed density of 1100 kg/m3, [API -2°] and the main concern is water, where would the water proabably be found?
    a. 15 cm [6 ] off the bottom
    b. Stratified between the lower and middle levels
    c. Floating on top of the cargo
    d. No water can be found in oils with a density greater than 1000 kg/m3[with negative API]
15. 6.25 How is an all-levels sample obtained?
    a. By submerging an unstoppered container at a uniform rate to a point near the tank draw-off level then raising it so that it is no more than 85% full on emerging from the liquid.
    b. By blending tank upper, middle and lower samples.
    c. By submerging a stoppered container to a point as near as possible to the draw-off (suction) level, then opening the sampler and raising it at a rate such that it is about 80% full on emerging from the liquid.
    d. By submerging a stoppered container to the bottom of the product in a tank, then opening the sampler and raising it at a uniform rate until the container is full.
16. 6.31 Why should sampling cord not be allowed to fall on the deck or tank roof?
    a. It could become contaminated
    b. It could make a mess that could cause a danger of slipping
    c. The cord could become damaged
    d. Answers a. and b. are correct
17. 6.29 After obtaining a tank running sample, the inspector notices that the sampling bottle is full on withdrawing it from the tank. What should the inspector do?
    a. Pour some of the sample into a second container
    b. Pour some of the sample out of the bottle
    c. Retake the sample to comply with the method
    d. Answers a., b. or c. are all correct
18. 6.54 Where is a 'lower' sample is taken from?
    a. The bottom of the tank
    b. Just above the water level
    c. The mid-point of the bottom third of the liquid
    d. At the level of the tank outlet/inlet pipe