Assessment Test

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1. The purpose of inert gas systems aboard tank vessels is to __________.

 
 

2. If you have a liquefied flammable gas barge in tow, which is NOT required of you with respect to the barge and its cargo?

 
 

3. While underway with full LNG cargo tanks, an alarm indicates liquid in hold space #3. What should be the first action taken?

 
 

4. On many modern tankers, which of the following devices is used to reduce cargo pump leakage to the pump room bilge?

 
 

5. While discharging cargo, the cargo tank pressures are falling too low. What can the Cargo Officer do to correct the problem?

 
 
 
 

6. Which statement is TRUE of centrifugal pumps aboard tankers?

 
 

7. Cargo pump relief valves are piped to the __________.

 
 

8. Your ship has loaded 6,000 barrels of gasoline, at a cargo temperature of 50°F, departing New Jersey bound for Florida. API gravity is 55°. The volume correction factor (VCF) is .0006. How many barrels would you expect to unload if the cargo temperature is 90°F at the discharge port?

 
 

9. Your ship has loaded 6,000 barrels of gasoline, at a cargo temperature of 50°F, departing New Jersey bound for Florida. API gravity is 55°. The volume correction factor (VCF) is .0006. How many gallons would you expect to unload if the cargo temperature is 90°F at the discharge port?

 
 

10. Your ship has loaded 8,000 barrels of gasoline at a cargo temperature of 85°F, departing Aruba bound for New Jersey. API gravity is 55°. The volume correction factor (VCF) is .0006. How many gallons would you expect to unload if the cargo temperature is 50°F at the discharge port?

 
 

11. A cargo of oil has a coefficient of expansion of .0005 per degree F. If this cargo is loaded at 70°F, and a cargo temperature of 90°F is expected at the discharge port, how many barrels would you expect to unload if you loaded 10,000 barrels?

 
 

12. Which function is NOT provided by the scrubber of an inert gas system?

 
 

13. You are loading 530,000 barrels of cargo oil. At 0945 on 13 April, you find that you have loaded 202,000 barrels. At 1130, you find that you have loaded 223,000 barrels. If you continue at the same rate, you will finish at __________.

 
 

14. You are loading 475,000 barrels of cargo oil. At 0800 on 8 July, you find that you have loaded 174,000 barrels. At 1000, you find that you have loaded 192,000 barrels. If you continue loading at the same rate, you will finish at approximately __________.

 
 

15. The blowers of an inert gas generation system aboard a tanker, will be automatically secured if __________.

 
 
 
 

16. Pressure-vacuum relief valves on tank vessel cargo tanks should be kept in good working order to prevent __________.

 
 

17. Tank vessel inerting refers to __________.

 
 
 
 

18. When checking the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery, the atmosphere must be sampled __________.

 
 

19. What is the combined fan discharge rate in an inert gas system is related to?

 
 

20. What is the term used for evaporated LNG?

 
 
 
 

21. What functions due reliquification plants perform?

 
 
 
 

22. What is the temperature at which a vapor mixture, at a given pressure, begins to condense?

 
 

23. What is the general name given to propane, butane, and mixtures of the two?

 
 

24. Where would you expect to find a "charged mist" on a tanker?

 
 

25. A vessel loads edible oil in a deep tank through a manhole at the mid-length of the tank. In order to fill the tank to maximum capacity, what trim should the vessel have?

 
 

26. When measuring the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery, check it __________.

 
 

27. Where do you check when measuring the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery?

 
 

28. When cleaning a tank by the Butterworth process, you should begin to pump out the slops __________.

 
 

29. You are cleaning the tanks after carrying a cargo of crude oil. Which statement is TRUE?

 
 

30. What is the maximum percent of oxygen, by volume, allowed to be maintained in the cargo tanks prior to the commencement of crude oil tank washing?

 
 

31. Where will the complete details of a crude oil washing system aboard your vessel, including the operating sequences and procedures, design characteristics, a description of the system, and required personnel be found?

 
 

32. When planning the loading or discharging of a VLCC (100,000 DWT+) what is the most important consideration?

 
 

33. On tankers using manually operated tank valves, what does the deck hand wheel indicator register?

 
 

34. Each pressure gage used in an oil transfer operation must be accurate to within what percent?

 
 

35. Which refers to the depth of a petroleum product in a tank?

 
 

36. "Line Displacement" is a procedure that is followed at an oil terminal facility, when there is a change of which of the following?

 
 

37. Who must supervise functions aboard a tanker or tank barge such as connecting, disconnecting, and topping off?

 
 

38. What is litmus paste is used to determine?

 
 

39. How can you determine which grades of cargo a tank vessel is permitted to carry?

 
 

40. The boiling point of Methane is -161°C. How is the substance carried?

 
 

41. What is the standard net barrel for petroleum products?

 
 

42. Which statement is TRUE concerning insulating flanges?

 
 

43. What is the required gas supply capacity of an inert gas system?

 
 

44. Before starting to hoist provisions, which should be checked?

 
 
 
 

45. Stress on the topping lift of a swinging boom can be reduced by __________.

 
 

46. If an electric cargo winch is being used to lift a draft of cargo and the engine room loses all power, which will occur?

 
 

47. Which device is designed to automatically hold the load if power should fail to an electric winch?

 
 

48. If a hydraulic pump on a winch accidentally stops while hoisting, the load will stay suspended because __________.

 
 

49. The lashings on a stack of containers with interlocking fittings restrain the forces that cause __________.

 
 

50. The weight of the container and its contents is supported on deck by what part(s)?

 
 

51. Which statement concerning the lashings of containers with solid bar or wire rope lashings is TRUE?

 
 

52. You are on a multiple-product chemical tanker. The loading plan includes cargoes of diethylenetriamine and formamide. Which statement concerning the stowage of these cargoes is TRUE?

 
 

53. You are on a multiple-product chemical tanker and will carry cargoes of allyl alcohol, benzene, and propanolamine. Which of the following is true?

 
 

54. You are on a multiple-product chemical tanker and will carry cargoes of isophorone, ethylenediamine, and creosote. Which of the following is TRUE?

 
 

55. According to the Chemical Data Guide, which reactive group(s) is/are not compatible with the products polybutene and o-xylene?

 
 

56. What produces the MOST dangerous vapors?

 
 

57. Your containership has a container displaying a hazardous cargo placard. The placard has the number 2282 on it. This indicates that it is carrying what cargo?

 
 

58. Your containership has a container displaying a hazardous cargo placard. The placard has the number 2224 on it. This indicates that it is carrying what cargo?

 
 

59. The flash point of vinyl chloride is __________.

 
 

60. The label required for magnesium scrap is __________.

 
 

61. What is the TLV of cyclohexanol?

 
 

62. According to the Chemical Data Guide, fuel oil number 6 has a flash point (degrees F) of __________.

 
 

63. If you came into contact with nitrobenzene while disconnecting the cargo hose, you should be aware that it is __________.

 
 
 
 

64. According to the Chemical Data Guide, the flash point for the grade B flammable liquid piperylene is __________.

 
 

65. What is a grade B flammable liquid?

 
 

66. Grade D liquids are those having flash points of __________.

 
 

67. Which cargo is considered volatile?

 
 

68. Many dangerous cargoes are stowed on deck because of the __________.

 
 
 
 

69. Entries should be made in a Ro-Ro vessel's cargo-securing device record book for __________.

 
 
 
 

70. How could lashing gear used aboard Ro-Ro vessels be stowed when not in use?

 
 
 
 

71. When accepting vehicles for shipment, the Master should ensure that __________.

 
 
 
 

72. The lashings used on Ro-Ro vessels should be capable of withstanding the forces of __________.

 
 
 
 

73. What is used when securing heavy vehicles aboard Ro-Ro vessels?

 
 

74. An advantage of using chain lashing on heavy vehicles aboard Ro-Ro vessels is that it __________.

 
 

75. The disadvantage(s) of using chain lashing on heavy vehicles aboard Ro-Ro vessels is that __________.

 
 
 
 

76. The disadvantage(s) of using web lashing on light vehicles aboard Ro-Ro vessels is that it __________.

 
 
 
 

77. What is/are the advantage(s) of using web lashing on light vehicles aboard Ro-Ro vessels?

 
 
 
 

78. Which of the following is/are TRUE regarding lashing requirements to secure vehicles aboard Ro-Ro vessels?

 
 
 
 

79. Which of the following statement(s) is/are TRUE regarding lashing requirements to secure vehicles aboard Ro-Ro vessels?

 
 
 
 

80. Which factor(s) should be considered when loading vehicles or trailers aboard Ro-Ro vessels?

 
 
 
 

81. You may be able to avoid loss of suction in a pump by __________.

 
 
 
 

82. Discharging cargo and the inert gas system is in operation to inert the tanks. The pressure in a tank being discharged starts to drop below the allowable limit. What action should you take?

 
 

83. During the ballast voyage, how are the tanks kept cold on an LNG tanker?

 
 

84. Cargo tanks carrying grades D or E liquids on tank barges are required to be vented with which of the following?

 
 

85. Each hose used for transferring vapors must be which of the following?

 
 
 
 

86. What does the LNG cargo pumps capacity depends upon?

 
 
 
 

87. When selecting the fuel oil tanks for the "burn-out" of bunkers during a voyage consideration of all of the following must be taken with the EXCEPTION of __________.

 
 

88. When discharging cargo from a tank barge, in which case may the cargo pass through or over the towing vessel?

 
 

89. You have completed a crude oil wash. What action should be taken with the oil in the lines running to the washing machines?

 
 

90. What is the gas above the liquid in an LNG tank?

 
 

91. LNG containment insulation performs all of the following functions, except which of the following?

 
 

92. What percent of oxygen content by volume, must each inert gas system be designed to supply the cargo tanks with a gas, or mixture of gases?

 
 

93. During loading and discharging operations, in addition to when the cargo tanks have been properly filled, each inert gas system must be capable of maintaining a minimum gas pressure of __________.

 
 

94. Which of the following will be the indication of the tendency of a grade "B" product to vaporize?

 
 

95. Which of the following terms best defines the spontaneous mixing of a tank's liquid contents when a heavier layer forms above a less dense lower layer?

 
 

96. Introducing inert gas into a tank already inert with the object of further reducing the oxygen or hydrocarbon content to prevent combustion if air enters the tank is called __________.

 
 

97. What should LFG tank and pipeline maintenance include?

 
 
 
 

98. You are on a tankship discharging oil. what happens to the remaining oil when all of the oil that the main cargo pumps can handle is pumped out of a tank?

 
 

99. Which of the following applies to cargo tank safety valves?

 
 
 
 

100. A tank which carries liquid is dangerous to the stability of a vessel when it is in what state?

 
 


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