- 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 's most important feature, when worn, is the distance between the shell and the w' at line 1
1. 5.29 What should you do to avoid the build-up and/or discharge of static electricity when using a portable electronic thermometer (PET)?
    a. Hold on to the railing or other metal part of the tank while using the PET
    b. Attach the ground wire of the PET to the tank before opening the gauge hatch then slowly lower the probe assembly into the oil
    c. Since the probe is plastic and does not conduct electricity, no static electricity can form
    d. Either a., b. or c. is acceptable
2. 5.76 Hydrogen sulfide is probably the most dangerous gas commonly encountered in the petroleum industry.
    a. True
    b. False

3. 5.24 As you enter a bunded/fire wall area to sample a fuel oil tank, you begin to feel dizzy. What action should you take?
    a. Get out of the tank area immediately
    b. Take a deep breath and run for the tank ladder
    c. Lie down because there is more oxygen closer to the ground
    d. Immediately put on your respirator with organic cartridges
4. 5.82 What is the short term exposure limit (STEL) for hydrogen sulfide?
    a. 15 ppm (30 ppm in USA)
    b. 10 ppm (20ppm in USA)
    c. 25 ppm (50 ppm in USA)
    d. 30 ppm (60 ppm in USA)
5. 5.34 What must you do in order to transport flammable liquid samples on a public highway?
    a. Fully label all samples
    b. Place the samples in approved DOT containers
    c. Consult a Safety Data Sheet for the product being transported
    d. Answers a., b. and c. are all correct
6. 5.90 The Short Term Exposure Limit (STEL) defines exposure to a substance over how long?
    a. 30 minutes
    b. 60 minutes
    c. 15 minutes
    d. 20 minutes
7. 5.62 Which of the following statements are correct, when working with benzene?
    a. As a minimum, a full face or half mask cartridge respirator must be worn for closed or restricted system gauging and sampling
    b. A self contained breathing apparatus must be used in all open tank situations
    c. A self contained breathing apparatus must be used if the exposure is expected to exceed 50ppm
    d. Answers a., b. and c. are all correct
8. 5.43 What defines a confined space?
    a. It has limited means of access and exit
    b. It is not designed for continuous occupation
    c. It has limited natural ventilation
    d. Answers a., b. and c. are all correct
9. 5.54 What is the normal oxygen content of the air?
    a. 15.1%
    b. 19.1%
    c. 20.9%
    d. 25.9%
10. 5.41 What is the safe oxygen content range in a confined space?
    a. Between 19.5% and 21.0%
    b. Between 18.6% and 20%
    c. Between 19% and 25%
    d. Answers a., b. and c. are all wrong
11. 5.38 A SDS will list what type of protective equipment is required when working with a particular material.
    a. True
    b. False

12. 5.18 A hard hat's most important feature, when worn, is the distance between the shell and the wearer s head.
    a. True
    b. False