SECTION 5 - SAFETY
คำชี้แจง - ถ้าไม่กรอกทั้งชื่อ และนามสกุลของผู้ทำข้อสอบ ระบบจะไม่ตรวจข้อสอบให้ - ถ้าทำข้อสอบไม่ครบ ระบบจะไม่ตรวจข้อสอบให้ - เกณฑ์ตัดสินผ่านการทดสอบอยู่ที่ร้อยละ 90 หรือ 27 ข้อขึ้นไป
แบบทดสอบนี้ มีจำนวนข้อสอบ 90 ข้อ หากต้องการเพิ่มจำนวนข้อ ให้เลือก เพิ่มจำนวนข้อเป็น 20 ข้อ 30 ข้อ 50 ข้อ

1. 5.58 The appearance and characteristic odor of benzene is? a. Clear colorless liquid with a sweet odor b. Clear colorless liquid with a sour odor c. Light brown liquid with no distinguishable odor d. Light brown liquid with a strong pungent odor 2. 5.79 Which of the following exposure limits for H2S (for use with respirators) are correct? a. 500 ppm maximum exposure when using a full face respirator b. 100 ppm maximum exposure when using a half-mask respirator c. A self contained breathing apparatus must be used if the exposure exceeds 500 ppm d. Only a self contained breathing apparatus is permissible for any exposure above the permissible exposure limit 3. 5.60 What is the minimum required respirator for working in a benzene environment that is greater than the permitted exposure limit? a. Self contained breathing apparatus b. Full face respirator with an organic vapor cartridge c. Half-mask respirator with an organic vapor cartridge d. Half-mask respirator with an acid gas cartridge 4. 5.50 What do the initials UEL stand for? a. Upper environmental level b. Unknown environmental level c. Upper explosive limit d. Unknown explosive levels 5. 5.25 How can the opportunity for a build-up and/or discharge of static electricity be reduced? a. By wearing rubber gloves b. By not allowing your hands to slide on the hand rail c. By grounding yourself and your equipment before opening the gauge/sample hatch and during subsequent operations d. By using stainless steel equipment 6. 5.22 When using a metal tape to gauge a tank, the tape should always stay in contact with the gauge hatch. a. True b. False 7. 5.61 When working with benzene, in addition to a respirator, hard hat and safety footwear, what other personal protective equipment should be worn? a. Safety glasses and leather gloves b. Leather gloves, long-sleeve coveralls and goggles c. Rubber gloves, chemical protective clothing, goggles and face shield d. Rubber gloves, goggles, and coveralls 8. 5.31 What is the main component of inert gas normally used on special chemical vessels? a. Nitrogen b. Carbon dioxide c. Carbon monoxide d. Hydrogen 9. 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 10. 5.13 What information must GHS sample labels contain? a. Hazard pictograms, signal words and hazard statements b. Product name and precautionary statements c. Information in both a. and b. above d. Information in a. and b. above and supplier information, including a telephone number 11. 5.87 Ladders, planks, and scaffold boards should not be used as walkways (i.e. when boarding vessels, moving between barges, etc.) a. True b. False c. Only when in exposed seaway conditions d. Only when no gangways are available 12. 5.21 Before gauging a tank, how can static electricity be discharged from your body? a. By using a tank gauge meter b. By touching a grounded structure such as a tank railing, with bare hands c. By using natural fiber sampling cords d. By touching a grounded structure such as a tank railing, while wearing rubber gloves 13. 5.28 Why is it important to wear gloves while sampling? a. So that the sample is not contaminated b. To prevent your hands becoming dirty c. To prevent hazardous substances being absorbed through the skin d. Answers a., b. and c. are all correct 14. 5.69 Hydrogen sulfide may be present in all petroleum products, crude oil and many types of petrochemicals. a. True b. False 15. 5.11 Portable electronic measurement equipment must be _______ immediately before gauging? a. Checked b. Cleaned c. Calibrated d. Earthed (grounded) 16. 5.03 Regardless of the product, and in accordance with API Ch 8.1/ASTM D4057, what is the maximum level to which sample containers should normally be filled? a. 50% b. 80% c. 85% d. 100% 17. 5.27 What can help prevent a build-up and/or discharge of static electricity when sampling? a. Use of a sampling cord made of synthetic fibre b. Tying the end of the sampling cord to the railing of the tank c. Use of a sampling cord that contains no synthetic fibre d. Holding the sample cord against the gauge hatch throughout the sampling operation 18. 5.32 Why should pumping be suspended when first-in or first-foot samples are taken? a. To allow any gas to dissipate b. To allow static electricity to dissipate c. So the vapours don t blow in your face d. To give time for analysis results 19. 5.84 What type of respirator filter cartridges should you use for protection against hydrogen sulfide? a. Acid Gas b. None. Only a self contained breathing apparatus is acceptable c. Organic Vapour d. Radionucleides, highly toxic dusts, mists and fumes 20. 5.78 What is the maximum permissible 8 hour TWA (time weighted average) exposure level of hydrogen sulfide? a. 5 ppm (10 ppm in USA) b. 15 ppm (20 ppm in USA) c. 25 ppm (50 ppm in USA) d. 30 ppm (60 ppm in USA) 21. 5.67 What effects may result from chronic exposure (long term) to benzene? a. Loss of vision b. Various blood disorders ranging from anemia to leukemia c. Impaired Disability Syndrome (IDS) d. Answers a., b. and c. are all correct 22. 5.63 Can gasoline contain benzene? a. Yes b. No 23. 5.08 Which of the following safety equipment is not required on every job? a. H2S monitor b. SCBA c. Hard hat, safety footwear, gloves d. Long-sleeve, fire resistant clothing 24. 5.35 What is the correct source of information about the hazards of any product being inspected? a. The inspector s supervisor b. A knowledgeable chemist c. The inspector s previous experience d. Safety Data Sheets 25. 5.68 How heavy are benzene vapours? a. Lighter than air b. Heavier than air c. Same as air d. Answers a., b. and c. are all wrong 26. 5.65 What is the permissible exposure limit for benzene (8 hour time weighted average)? a. 10 ppm b. 3 ppm c. 5 ppm d. 1 ppm 27. 5.53 What does an oxygen meter measure? a. The percentage of oxygen below the LEL of a hydrocarbon/air mixture b. The amount of oxygen needed to make a confined space safe for entry c. The percentage of oxygen contained in the atmosphere being sampled d. Answers a., b. and c. are all wrong 28. 5.26 A portable electronic thermometer should always be grounded after the probe has been lowered into the liquid. a. True b. False 29. 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 30. 5.76 Hydrogen sulfide is probably the most dangerous gas commonly encountered in the petroleum industry. a. True b. False ให้ตรวจสอบชื่อนามสกุลว่ากรอกครบหรือไหม่ พร้อมกับตรวจข้อสอบว่าเลือกทำครบทุกข้อหรือไม่ ไม่ครบไม่ตรวจนะครับ

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