LGTF exit exam questions and answer quiz contain questions Answer
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1) How is BOILOFF gas generated
A) Evaporation
B) Heat ingress
C) Drop in pressure
D) All of the above
2) What are the necessary conditions that must take place for an electrical discharge to occur
A) Electrostatic separation
B) Electrostatic accumulation
C) Electrostatic discharge
D) All of the above
3) Gas ship's cargo compressor room cargo tank area are
A) Snap back area
B) Gas free area
C) Gas dangerous
D) All of the above
4) On board LNG Tanker which of these equipment is not required for gas burning
A) Vacuum pumps
B) Gas heater
C) Compressor
D) Steam dump on main condenser
5) Which of these would you consider essential equipment to carry when working on the deck of ship carrying ammonia?
A) Gloves
B) Personal 02 meter
C) Gas Mask
D) Personal hydrocarbon alarm
6) What is the condition of the inert gas as it is produced by the boilers or inert gas generator?
A) Free of oxygen and clean
B) Hot and containing shoot particles
C) Dirty and saturated
D) Superheated and black or grayish in color
7) For what reason cargo sampling is necessary in gas tankers?
A) To establish safe conditions prior to cargo transfer
B) To establish that the cargo is within commercially agreed specifications at arious pumps
C) Both A & B
8) What is the main danger to be guarded against when discharging using a cargo heater with seawater as the heating medium?
A) Over pressurizing of the gas side of the heater
B) Freezing of water side of the heater
C) Over pressurizing of the water side of the heater
D) Overheating of the gas side of the heater
9) Magnesium, Titanium, Sodium, Lithium and Potassium are classified as:
A) Class A fire
B) Class B fire
C) Class C fire
D) Class D fire
10. On tanker vessels which of these valve type is most commonly used in conjunction with hydraulically actuated controls?
A) None return valves
B) Globe valves
C) Butterfly valves
D) Gate valves
11) What is critical temp of methane in deg Celsius?
A) -82.5
B) 82.5
C) 52.8
D) None of the above
12) On tanker vessels equipped with the power operated cargo tank valves the type of power operator most commonly used is
A) Hydraulic
B) Electric
C) Steam
D) Diesel
13) A bigger spell of LPG will be visible as _____ which is condensed water vapour from the atmosphere
A) White cloud
B) Blue cloud
C) Black cloud
D) None of these
14. If cargo density is different from that specified by the float gauge manufacturer, what will you adjust
A) Tape correction
B) Trim correction
C) Float correction
D) List correction
15) What is the guiding rule for limiting pressure surge during loading or discharging
A) Stop the cargo pump
B) First close the ESD valve nearest to the pump
C) Finally close the ESD valve
D) All of the above
16) Why strainers are commonly installed in the cargo piping system?
A) To protect the cargo handling plant
B) To protect equipment from damage by foreign objects
C) Both A & B
17) Which of the following is the ultimate source of energy for us?
A) LNG
B) Nuclear
C) Solar
D) CNG
18. What characteristics should insulation materials possess for use in gas carriers?
A) Low thermal conductivity, ability to bear loads
B) Ability to withstand mechanical damage, lightweight
C) Unaffected by cargo liquid or vapour
D) All of the above
19. Tank Relief V/V used for release of excessive pressure
A) True
B) False
20. Which safety device is fitted on the deck inert gas line to monitor the supply condition of the inert gas?
A) The inert gas high temperature alarm
B) The inert gas low flow alarm
C) The inert gas low pressure alarm
D) The inert gas reverse flow alarm
21. How is cooling/cleaning water supplied to the inert gas scrubber tower?
A) By the main sea water pump
B) By the cargo condenser pump
C) By the scrubber sea water pump
D) By the deck seal sea water pump
22) This liquefied gas is normally carried in its fully refrigerated condition at its atmospheric boiling point of -104 deg C is-
A) Ethylene
B) Propane
C) Butane
23. The space enclosed by the ships structure in which a cargo containment system is situated called
A) Hold space
B) Compressor room
C) Motor room
D) Engine room
24. Self-contained breathing apparatus SCBA is also called as:
A) ELSA
B) EEBD
C) Compressed air breathing apparatus - CABA
D) None of the above
25) How much cleaner is Natural Gas to burn?
A) Reducing CO2 emissions by 20% to 30%
B) Reducing CO emissions by up to 75%
C) Reducing NOX emissions by approximately 50%
D) All of the above
26) If a centrifugal pump operating with a positive suction head becomes air bound, your FIRST response should be to
A) Vent the casing
B) Tighten the packing
C) Close the discharge
D) Re-prime the pump
27) On all gas ships any pipe work entering or leaving the cargo tank must do so through the of the tank
A) Aft end
B) Top
C) Bottom
D) Forward end
28) While commencement of loading cargo direct high-pressure loading is advisable
A) True
B) False
29) One of the following is NOT an alarm on an inert gas plant
A) Low pressure alarm
B) Low oxygen alarm
C) Deck seal low water alarm
D) Scrubber high water level alarm
30) The purpose of remotely controlled measuring of tank levels are to measure
A) Height from liquid surface to top stringers in the tank
B) Height of liquid in the tank
C) Height from bottom shell to top stringers in the tank
D) Height of bottom girders in the tank
