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. 5.48 What do the initials LEL stand for? a. Low explosion location b. Low environmental levels c. Lower environmental level Lower explosive limit 2. 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 3. 5.80 Refineries are not the only sources of industrial hydrogen sulfide (H2S). Which of the following are other sources? a. Pulp Mills b. Any agricultural facility where decay of organic matter may occur c. Drilling Rigs d. Answers a., b. and c. are all correct 4. 5.44 Before entering a confined space, which tests are required? a. Oxygen content b. Lower explosive limit c. Toxic vapour testing d. Answers a., b. and c. are all correct 5. 5.75 Organic filter respirators are sufficiently effective in a hydrogen sulphide atmosphere to be used for escape purposes. a. True b. False 6. 5.77 What are the characteristics of hydrogen sulfide? a. It is a pale yellow gas with a sweetish taste and strong pungent odour b. It is a pale yellow gas with the odour of rotten eggs c. It is a colourless gas with a sweetish taste and the odour of rotten eggs d. It is a colourless gas with little or no odour 7. 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 8. 5.39 When does a confined space exist on a tank with an external floating roof? a. When the roof is located anywhere under the top ring or course of the tank plates b. Only when the tank is empty c. Only when the roof is resting on its legs d. Answers a., b. and c. are all wrong 9. 5.71 Who or what should you consult if you need to know detailed safety or exposure information about benzene? a. Your doctor or pharmacist b. Your Safety Manual c. The Safety Data Sheet d. The International Safety Guide for Oil Tankers and Terminals (ISGOTT) 10. 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 11. 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 12. 5.70 What are the effects of acute exposure (short term) to benzene? a. Shortness of breath, irritability, headache, nausea, dizziness, intoxication b. Irritation of the eyes, nose and respiratory tract c. Convulsions and loss of consciousness d. Answers a., b. and c. are all correct 13. 5.02 Regardless of the product, and in accordance with IP475/ISO 3170, what is the absolute maximum level to which sample containers must be filled? a. 50% b. 80% c. 95% d. 100% 14. 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% 15. 5.16 Corrosive liquids will directly injure the body tissue on contact. a. True b. False 16. 5.81 What is the maximum permissible 8 hour TWA (time weighted average) exposure level of H2S? a. 30 ppm (60 ppm in USA) b. 25 ppm (50 ppm in USA) c. 15 ppm (20 ppm in USA) d. 5 ppm (10 ppm in USA) 17. 5.05 When gauging a tank that is emitting vapours, where should you position yourself? a. It is not important b. Up-wind of the gauge hatch c. With the wind in your face d. With the wind at your left or right side 18. 5.40 Which of the following are considered to be confined spaces? a. A cofferdam b. An external floating roof tank c. A ship s pump-room d. Answers a., b. and c. are all correct 19. 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 20. 5.15 Which of the following is defined as a corrosive liquid? a. An acid solution b. A caustic solution c. Acid and caustic solutions are not corrosive d. Acid and caustic solutions are both corrosive 21. 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 22. 5.26 A portable electronic thermometer should always be grounded after the probe has been lowered into the liquid. a. True b. False 23. 5.46 Which of the following are examples of a confined space? a. A cargo tank b. A grain silo c. A pump-room on a ship d. Answers a., b. and c. are all correct 24. 5.07 When are inspectors permitted to operate valves on board vessels? a. When accompanied by an authorised person on board b. When no-one else is around to do it c. When the vessel staff are too busy to do it themselves d. Inspectors must not operate vessel valves 25. 5.52 An explosimeter (explosion meter) measuring LEL% is utilized to sample the atmosphere within a cargo tank and a reading of 15% is observed. What does the reading mean? a. The atmosphere in the tank contains 15% oxygen b. The atmosphere in the tank is 15% of the lowest concentration of an explosive mixture of air and hydrocarbon vapours c. The atmosphere in the tank is 15% hydrocarbon vapours d. The atmosphere in the tank is a 15% mixture of air and hydrocarbon vapours 26. 5.55 Which of the following conditions can cause false readings on an explosion meter? a. Low hydrocarbon vapor content b. High moisture content c. Low oxygen content d. Both b. and c. are correct 27. 5.45 According to the International Safety Guide for Oil Tankers and Terminals (ISGOTT), for a tank to be safe for entry, what should the reading on a combustible gas detector be? a. Less than 15% b. Less than 10% c. Less than 1% d. Less than 0.5% 28. 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 29. 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 30. 5.73 When working in an environment suspected of containing H2S what is the only effective protection? a. Full face respirator b. Half mask respirator c. Self-contained breathing apparatus (SCBA) d. Answers a., b. and c. are all correct ให้ตรวจสอบชื่อนามสกุลว่ากรอกครบหรือไหม่ พร้อมกับตรวจข้อสอบว่าเลือกทำครบทุกข้อหรือไม่ ไม่ครบไม่ตรวจนะครับ

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