Assessment Test

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1. While standing your engine room watch at sea, you notice the DC heater level is gradually dropping as indicated by the remote level indicator. Which of the following actions should you take?


2. What steps should be taken if large quantities of fuel oil are found in the drain inspection tank?


3. After starting the main lube oil pump in a gravity-type lube oil system, you should verify that the gravity tanks are full by __________.


4. Journal bearings used with modern turbine rotors are manufactured in two halves in order to __________.


5. The boiler gage glasses should be periodically blown down to __________.


6. Air in the main condenser is harmful because it will __________.


7. The relieving pressure of the super-heater safety valves is permitted to be reset without exchanging the valves when the working pressure of the boilers is __________. I. increased II. decreased


8. Bunker "C" fuel oil is heated prior to atomization to __________.


9. Which of the listed order of valves represents the proper installation of the main feed water supply line to a marine propulsion boiler?


10. How is the axial clearance indicator used on a turbine?


11. The boiler water gage glasses should be blown down __________.


12. Which of the listed items are the two most commonly used opposing forces involved in the operation of a constant pressure boiler feed pump governor?


13. According to Coast Guard Regulations (46 CFR), what action should be taken if the metal thickness of a marine boiler is found to be thinner than original specifications?


14. If the condensate level in the loop seal of the inter-condenser is lost, __________.


15. Fuel oil is heated before atomizing to __________.


16. Except one of the following, 46 CFR requires that __________.


17. Water circulation in a water-tube boiler is a result of the __________.


18. To properly blow down a boiler gage glass, you should __________.


19. Coast Guard Regulations (46 CFR) state that a marine inspector may require a boiler to be drilled or gauged to determine actual thickness __________.


20. Noise caused by condensate striking bends or fittings in a steam pipe line is called __________.


21. The primary purpose of the heater used in a pressurized fuel oil system is to __________.


22. Coast Guard Regulations (46 CFR) state that main propulsion water-tube boilers are required to be fitted with a surface blow off valve if the design pressure is __________.


23. On a main propulsion turbine bearing, the readings obtained with a bridge gage represent the __________.


24. If the engineer on watch has reason to doubt the accuracy of the water level showing in the boiler gage glass, he should first __________.


25. According to Coast Guard Regulations (46 CFR), what is the highest steam temperature to which fusible plugs may be exposed?


26. A decrease in condenser vacuum is found to be caused by a loss of the air ejector loop seal. To reestablish the loop seal, you should __________.


27. While on watch aboard a 900 psi (6.2 MPa) steam vessel, you suddenly hear a loud, piercing, high pitched noise. Which of the following actions should you take?


28. According to Coast Guard Regulations (46 CFR), fusible plugs are not permitted on auxiliary boilers where the maximum steam temperature to which they are exposed exceeds __________.


29. Fuel oil is heated before it reaches the burners to __________.


30. Which of the devices listed cannot be used to determine bearing wear on a main propulsion turbine bearing?


31. Steam baffles are installed in the steam drum of a water-tube boiler to __________.


32. During an inspection of the main turbine, you notice flow marks or discoloration across the diaphragm joints. This condition indicates __________.


33. Steam drains from fuel oil heating coils can be returned to the condensate and feed water system __________.


34. All oil-fired main propulsion burners with automatic safety control systems must automatically close the burner valve when _________.


35. According to Coast Guard Regulations, boiler safety valves __________.


36. A bridge gage is used to measure __________.


37. The main feed check valve functions to __________.


38. A malfunction in the DC heater is indicated by __________.


39. While standing watch in the engine room of a steam vessel while at normal sea speed, you notice that the condensate temperature outlet of the air ejector condenser is fluctuating by approximately 12°F. You should therefore __________.


40. When securing a fuel oil heater you should __________.


41. Thrust clearances indicated on a main propulsion turbine bearing clearance diagram are __________.


42. On a boiler equipped with pilot actuated safety valves, which of the valves listed will be actuated first?


43. While standing watch underway at sea in the engine room, there is a complete loss of electrical power. When power is restored, the steering gear pump motor will _________.


44. While standing watch underway in the engine room, failure of the normal power supply will cause the emergency generator to provide power through __________.


45. While on watch at sea with only one ship's service turbo-generator on line, the entire plant suddenly blacks out without warning. After restoring power, which of the following faults would most likely have attributed to this casualty?


46. The fins on the tubes of a fin type fuel oil heater are provided to __________.


47. The thrust bearing wear on a turbine may be determined by checking the __________.


48. One of the important functions of the super-heater safety valves is to __________.


49. While standing watch in the engine room, which of the following actions should be taken to reestablish a “blown” air ejector loop seal?


50. While on watch in the engine room and steaming at a steady rate, the water level begins to decrease and suddenly drops out of sight in the boiler gage glass. Your first corrective action should be to __________.


51. You are standing watch in the engine room of a steam vessel. You should blow down a gage glass periodically to __________.


52. While underway on watch in the engine room of a steam vessel, the proper valve positions for controlling feed water to the boiler using the auxiliary feed system should be __________.


53. If a boiler super-heater safety valve is leaking at normal working pressure, the quickest method of determining and possibly solving the problem is to __________.


54. On a steam vessel, if a centrifugal main feed pump were operating at shutoff head with the re- circulating line closed, which of the following conditions could occur?


55. Fuel oil settling tanks are used to, except __________.


56. In the majority of marine power plants, the fuel oil heater installations are divided into several units because __________.


57. While standing watch in the engine room, you hear a “crackling” sound coming from within a salt water service system centrifugal pump. The most probable cause for this occurrence would be from an abnormal condition at the __________.


58. While a vessel is underway the low pressure turbine high-speed pinion is damaged. The pinion is then removed from the gear train. Under these circumstances, the main unit is capable of which speed and direction?


59. According to Coast Guard Regulations (46 CFR), which of the following steam piping conditions, subjected to main boiler pressure, is exempted from hydrostatic testing?


60. Which of the conditions listed should be immediately reported to the engineering officer on watch?


61. The usual symptoms of cavitation in a centrifugal pump would be __________.


62. Cavitation is a term commonly used with centrifugal pumps to describe __________.


63. The advantage of a counter flow fuel oil heater, as compared to a parallel flow fuel oil heater, is that the counter flow heater __________.


64. When conducting a hydrostatic test of a boiler, Coast Guard Regulations (46 CFR) prohibit __________.


65. Excessive recirculation of condensate should be avoided, as it can cause __________.


66. The boiler fuel oil service pump normally takes suction from the __________.


67. If a severe leak develops in the electro-hydraulic steering gear, which of the listed conditions could result?


68. Which of the following construction methods would apply to the Babbitt lined, split-type, reduction gear bearings?


69. A power failure in the hydraulic system of a compact type steering gear would cause the rudder to __________.


70. Coast Guard Regulations (46 CFR) require that the final setting of boiler safety valves be conducted in presence of the __________.


71. Air trapped in the hydraulic fluid of a steering system would be indicated by __________.


72. Which of the pumps listed takes fuel oil suction from the double bottom tanks and discharges it to the settling tanks?


73. Air trapped in the hydraulic fluid of a steering system would be indicated by, except __________.


74. When air becomes trapped in the hydraulic fluid of a steering system, the __________.


75. Which of the following conditions is indicated by the necessity of providing excessive gland sealing steam pressure to maintain the normal operating conditions of the main propulsion unit?


76. Damaging scale can form on the interior of super-heater tubes as a result of __________.


77. While standing watch in the engine room, irregular feeding or surging of the feed water supply to a flash evaporator may be attributed by __________.


78. Salinity cells are strategically installed in distilling units to indicate the __________.


79. Indicated high salinity of the distillate discharged from a flash-type distilling plant will be a result of __________.


80. High temperature at the super-heater outlet would be caused by __________.


81. Foaming in boiler water is a result of __________.


82. What physical changes will occur to the steam within a boiler that has been properly bottled up when additional heat is applied?


83. The diameter of a dummy piston installed in a reaction turbine is determined by __________.


84. Coast Guard regulations require that the super heater safety valves and the drum safety shall have a total rated capacity not less than the maximum generating capacity of the __________.


85. The combustion air pressure is increased when using the steam soot blowers to “blow tubes” in order to __________. I. aid in the process of removing soot deposits II. prevent the steam from extinguishing the fires


86. Corrosion of the flue gas side of the economizer can be a result of the __________. I. stack gas temperature being lower than the dew point II. feed water temperature being excessively cool


87. Which of the following actions should be taken first when water is found in the fuel oil settling tank?


88. The axial position of a turbine rotor is controlled by the thickness of the __________.


89. Proper use of the boiler surface blow will __________.


90. When starting a turbo generator in an automated plant, you must provide lube oil pressure to the unit by means of __________.


91. When preparing to hydrostatically test water-tube boilers, you should __________.


92. The relieving capacity of the super-heater safety valves is considered to be insufficient when the working pressure of the boilers is __________. I. increased II. decreased


93. The safety valve hand lifting gear should not be used if the boiler pressure is less than 75% of the safety valve popping pressure in order to __________. I. provide sufficient steam flow across the valve to prevent the collection of scale on the seat II. prevent cracking of the seat due to chattering of the feather and disc


94. When heated, fuel oil will __________.


95. The proper oil inlet temperature for centrifuging lube oil should be __________.


96. Which of the listed methods can be used to blow down a boiler without securing the fires?


97. Scavenging air pressure is provided to the steam soot blowers to __________. I. keep steam from accumulating in the soot blowing element while another element is being operated II. prevent corrosive combustion gases from entering the elements when the system is secured


98. Which of the conditions listed could prevent a centrifugal condensate pump from developing its rated capacity?


99. As lube oil absorbs moisture its dielectric strength can be expected to __________.


100. Using an oil temperature-viscosity chart, you can determine the recommended __________.


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