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1. Some spaces protected by fixed carbon dioxide systems are required to have audible alarms that begin sounding prior to the discharge of CO2. This time delay must be at least __________.

 
 
 
 

2. The CO2 flooding system is actuated by a sequence of steps which are

 
 
 
 

3. The danger associated with using carbon dioxide in an enclosed space is __________.

 
 
 
 

4. There are two disadvantages to CO2 as a firefighting agent. One of these is the limited quantity available, and the other is __________.

 
 
 
 

5. Which danger exists to people when CO2 is discharged into a small enclosed space?

 
 
 
 

6. Which statement concerning carbon dioxide is FALSE?

 
 
 
 

7. While you are working in a space, the fixed CO2 system is accidentally activated. You should __________.

 
 
 
 

8. Large volumes of carbon dioxide are safe and effective for fighting fires in enclosed spaces, such as in a pumproom, provided that the __________.

 
 
 
 

9. Large volumes of carbon dioxide are safe and effective for fighting fires in enclosed spaces, such as in a pumproom, provided that the __________.

 
 
 
 

10. The safety discs on carbon dioxide cylinders are set to release at 2,700 psi. Under normal circumstances this pressure will be reached at a temperature of __________.

 
 
 
 

11. CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when __________.

 
 
 
 

12. Spaces protected by a fixed CO2 system must be equipped with an alarm which sounds __________.

 
 
 
 

13. A safety outlet is provided on the CO2 discharge piping to prevent __________.

 
 
 
 

14. The gross weight of a fully charged CO2 bottle in a fixed CO2 system is 220 lbs. When the bottle is empty it weighs 120 lbs. What is the minimum acceptable gross weight of the CO2 bottle before it should be recharged by the manufacturer?

 
 
 
 

15. The flash point of a liquid means the temperature __________.

 
 
 
 

16. Which statement is TRUE concerning the "flash point" of a substance?

 
 
 
 

17. You should be most concerned about a possible explosion or fire in fuel tanks

 
 
 
 

18. The volatility of a flammable liquid is indicated by its __________.

 
 
 
 

19. Spontaneous combustion is most likely to occur in __________.

 
 
 
 

20. Spontaneous combustion is caused by __________.

 
 
 
 

21. Which substance might be subject to spontaneous combustion

 
 
 
 

22. What is the maximum oxygen content below which flaming combustion will no longer occur?

 
 
 
 

23. Storage batteries should be charged in a well ventilated area because __________.

 
 
 
 

24. What is LEAST likely to cause ignition of fuel vapors?

 
 
 
 

25. Spontaneous ignition can result from __________.

 
 
 
 

26. Which may ignite fuel vapors?

 
 
 
 

27. The accumulation of dangerous fumes generated by the storage batteries is best prevented by __________.

 
 
 
 

28. Automatic fire dampers in ventilation systems are operated by use of __________.

 
 
 
 

29. Spaces containing batteries require good ventilation because __________.

 
 
 
 

30. The primary reason for placing covers over storage batteries is to __________.

 
 
 
 

31. When flammable liquids are handled in a compartment on a vessel, the ventilation for that area should be __________.

 
 
 
 

32. It is necessary to secure the forced ventilation to a compartment where there is a fire to __________.

 
 
 
 

33. In battery charging rooms, exhaust ventilation should be provided __________.

 
 
 
 

34. Fighting a fire in the galley poses the additional threat of __________.

 
 
 
 

35. The ventilation system of your ship has fire dampers restrained by fusible links. Which statement is TRUE?

 
 
 
 

36. Fusible-link fire dampers are operated by __________.

 
 
 
 

37. Fire dampers prevent the spread of fire by __________.

 
 
 
 

38. Blocking open or removing fire dampers can cause __________.

 
 
 
 

39. The best method of extinguishing a class A fire is to __________.

 
 
 
 

40. The main advantage of a steady stream of water on a class "A" fire is that it __________.

 
 
 
 

41. A fire in a pile of canvas is classified as class __________.

 
 
 
 

42. A fire in a pile of dunnage would be classified as class __________.

 
 
 
 

43. A fire in trash and paper waste is classified as class

 
 
 
 

44. Burning wood is which class of fire?

 
 
 
 

45. A fire in a pile of linen is a class __________.

 
 
 
 

46. What would be the most effective agent to use to extinguish a fire in drums of flammable liquids stowed on the weather deck of a vessel?

 
 
 
 

47. Which extinguishing agent is suitable to combat a class B fire in an engine compartment?

 
 
 
 

48. When choosing extinguishers to fight a Class "B" fire do NOT use __________.

 
 
 
 

49. A large oil fire on the deck of a ship can be fought most effectively with __________.

 
 
 
 

50. On a class "B" fire, which portable fire extinguisher would be the LEAST desirable?

 
 
 
 

51. A class B fire is most successfully fought by __________.

 
 
 
 

52. The class of fire on which a blanketing effect is essential is class __________.

 
 
 
 

53. An oil fire is classified as class __________.

 
 
 
 

54. A galley grease fire would be classified as which class of fire?

 
 
 
 

55. If ignited, which material would be a class B fire?

 
 
 
 

56. Which of the following classifications does an oil fire belong to?

 
 
 
 

57. Foam is effective in combating which class(es) of fire?

 
 
 
 

58. A fire in electrical equipment should be extinguished by using __________.

 
 
 
 

59. Which types of portable fire extinguishers are designed for use on electrical fires?

 
 
 
 

60. What is the most important characteristic of the extinguishing agent in fighting a class "C" fire?

 
 
 
 

61. Which types of portable fire extinguishers are designed for putting out electrical fires?

 
 
 
 

62. Any extinguishing agent used on a Class "C" fire must have which important property? Any extinguishing agent used on a Class "C" fire must have which important property?

 
 
 
 

63. Fires of which class would most likely occur in the engine room of a vessel?

 
 
 
 

64. A fire starts in a switchboard due to a short circuit. This is which class of fire?

 
 
 
 

65. A fire in a transformer terminal would be classified as class __________.

 
 
 
 

66. Fires which occur in energized electrical equipment, such as switchboard insulation, are class __________.

 
 
 
 

67. A fire in the radio transmitter would be of what class?

 
 
 
 

68. A class C fire would be burning __________.

 
 
 
 

69. What is the primary hazard, other than fire damage, associated with a class C fire?

 
 
 
 

70. Which type of portable fire extinguisher is best suited for putting out a Class D fire?

 
 
 
 

71. Which extinguishing agent is best for use on a magnesium fire?

 
 
 
 

72. If a powdered aluminum fire is being fought, the correct extinguishing agent would be __________.

 
 
 
 

73. An aluminum powder fire is classified as class __________.

 
 
 
 

74. A magnesium fire is classified as class __________.

 
 
 
 

75. Fires in combustible metals, such as sodium or magnesium, are classified as class

 
 
 
 

76. You are testing a tank that contained gasoline by using a combustible gas indicator. Under testing, the tank sample caused the needle to move rapidly to 100 on the dial then fall to zero. What is the concentration of flammable gas?

 
 
 
 

77. A combustible gas indicator meter is calibrated to read the percentage of __________.

 
 
 
 

78. Combustible gas indicators measure the presence of combustible gas as a percentage of the __________.

 
 
 
 

79. When using the combustible gas indicator, a special filter for filtering the incoming sample must be used if the atmosphere being tested contains vapors of __________.

 
 
 
 

80. A pumproom is suspected of accumulating gases after a ventilation machinery breakdown. Where should the combustible gas indicator case be placed when testing the pumproom atmosphere for combustible gases?

 
 
 
 

81. (3.3.3.1-6) Which instrument is suitable for determining the presence of explosive concentrations of fuel oil vapors in tanks?

 
 
 
 

82. What is the best instrument for establishing a safe working area before welding in a confined space?

 
 
 
 

83. An oxygen indicator can be used to determine if there is __________.

 
 
 
 

84. An oxygen indicator can be used to determine if there is __________.

 
 
 
 

85. What could result in an incorrect oxygen concentration reading on the oxygen indicator?

 
 
 
 

86. Which statement is TRUE concerning the oxygen indicator?

 
 
 
 

87. What can be used to measure the percentage of oxygen inside a chain locker?

 
 
 
 

88. Deficient oxygen content inside a chain locker can be detected with __________.

 
 
 
 

89. Ambient air, which you normally breathe, contains what percent of oxygen?

 
 
 
 

90. After each reading of an oxygen indicator, the instrument should be purged with

 
 
 
 

91. When using the oxygen indicator, which reaction from the needle should you expect as a sample is drawn into the instrument?

 
 
 
 

92. You are using an oxygen indicator. How long should you wait after the sample is drawn into the instrument before reading the meter?

 
 
 
 

93. If the meter needle of the oxygen indicator cannot be set to zero, what should be done?

 
 
 
 

94. What is used to test a tank for oxygen content?

 
 
 
 

95. Combustible gas indicators operate by drawing an air sample into the instrument

 
 
 
 

96. Before entering the chain locker, you should __________.

 
 
 
 

97. What can cause a lack of oxygen in a chain locker?

 
 
 
 

98. Deficient oxygen content inside a chain locker can be detected with __________.

 
 
 
 

99. Which fire detection system is actuated by sensing a heat rise in a compartment?

 
 
 
 

100. Fire alarm system thermostats are actuated by __________.

 
 
 
 

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