| 1. 5.61 When working with benzene, in addition to a respirator, hard hat and safety footwear, what other personal protective equipment should be worn? |
| 2. 5.80 Refineries are not the only sources of industrial hydrogen sulfide (H2S). Which of the following are other sources? |
| 3. 5.86 What is the principal limitation of a filter or cartridge respirator? |
| 4. 5.04 What is the minimum personal protective equipment required when sampling? |
| 5. 5.57 Benzene is a health hazard. Which of the following are likely to contain benzene? |
| 6. 5.70 What are the effects of acute exposure (short term) to benzene? |
| 7. 5.81 What is the maximum permissible 8 hour TWA (time weighted average) exposure level of H2S? |
| 8. 5.54 What is the normal oxygen content of the air? |
| 9. 5.87 Ladders, planks, and scaffold boards should not be used as walkways (i.e. when boarding vessels, moving between barges, etc.) |
| 10. 5.36 What is the most informative source of information about the hazards of a product or chemical? |
| 11. 5.48 What do the initials LEL stand for? |
| 12. 5.69 Hydrogen sulfide may be present in all petroleum products, crude oil and many types of petrochemicals. |
| 13. 5.30 What is the main component of inert gas used on crude oil vessels? |
| 14. 5.42 Products have defined limits of combustion. What are these? |
| 15. 5.27 What can help prevent a build-up and/or discharge of static electricity when sampling? |
| 16. 5.65 What is the permissible exposure limit for benzene (8 hour time weighted average)? |
| 17. 5.63 Can gasoline contain benzene? |
| 18. 5.41 What is the safe oxygen content range in a confined space? |
| 19. 5.89 When working in an area where peronal monitors indicate the presence of hydrogen sulfide you must wear SCBA |
| 20. 5.17 A chemical has a strong odour. What does this indicate? |
| 21. 5.23 While sampling a crude ship, the fire alarm sounds. What action should be taken? |
| 22. 5.34 What must you do in order to transport flammable liquid samples on a public highway? |
| 23. 5.50 What do the initials UEL stand for? |
| 24. 5.72 What is the most hazardous component of many crude oils? |
| 25. 5.64 Workers who are regularly exposed to benzene should have a regular medical examination. |
| 26. 5.31 What is the main component of inert gas normally used on special chemical vessels? |
| 27. 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? |
| 28. 5.20 To find out if a material is hazardous, you must consult the SDS. |
| 29. 5.39 When does a confined space exist on a tank with an external floating roof? |
| 30. 5.14 The GHS applies to: |
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