GASCO EXIT EXAM QUESTIONS AND ANSWERS ARE GIVEN BELOW AS PER STCW EXIT EXAM. These questions are most frequently asked by dgshipping during exit exam

  • How is BOIL OFF gas generated
  1. Evaporation
  2. Heat ingress
  3. Drop in pressure
  4. All of the above         *
  • What are the necessary condition that must be take place for an electrical discharge to occur
  1. Electrostatic separation
  2. Electrostatic accumulation              *
  3. Electrostatic discharge
  4. All of the above
  • Gas ships cargo compressor room, cargo Tank area are
  1. Snap back area
  2. Gas free area
  3. Gas dangerous            *
  4. All of the above
  • On board LNG tanker which of these equipment is not required for gas burning
  1. Vacuum pump        *
  2. Gas heater
  3. Compressor
  4. Steam dump on main condenser
  • Which of these would you consider essential equipment to carry when working on the deck of ship carrying ammonia ?
  1. Gloves
  2. Personal 02 meter
  3. Gas mask         *
  4. Personal hydrocarbon alarm
  • What is the condition of the inert gas as it produced by the boilers of inert gas generator?
  1. Free of oxygen and clean          *
  2. Hot and containing shoot particles
  3. Dry and saturated
  4. Superheated and black or greyish in Colour
  • For what reason cargo sampling is necessary in gas tankers?
  1. To establish safe conditions prior to cargo transfer
  2. To establish that the cargo is within commercially agreed specifications at various pumps
  3. Both A and B         *
  4. None of the above
  • What is the main danger to be guarded against when discharging using a cargo heater with sea water as the heating medium?
  1. Over pressurizing of the gas side of the heater
  2. Freezing of water side of the heater            *
  3. Over pressurizing of the water side of the heater
  4. Over heating of the gas side of the heater

    • Magnesium, Titanium, Sodium, Lithium and Potassium are classified as:
    1. Class A fire
    2. Class B fire
    3. Class C fire
    4. Class D fire        *
    • On tanker vessels which of these valve type is most commonly used in conjunction with hydraulically actuated controls?
    1. Non return valves
    2. Globe valves
    3. Butterfly valves           *
    4. Gate valves
    • What is the critical temperature of Methane in Deg Celsius?
    1. -82.5       *
    2. 82.5
    3. 52.8
    4. None of the above
    • On tankers vessel equipped with the power operated cargo tank valves the type of power operator most commonly used is _____
    1. Hydraulic       *
    2. Electric
    3. Steam
    4. Diesel
    • A bigger Spell of LPG will be visible as a _____ which is condensed water vapour from the atmosphere
    1. White cloud             *
    2. Blue cloud
    3. Black cloud
    4. None of these
    • If cargo density is different from that specified by the float gauge manufacturer what will you adjust
    1. Float correction              *
    2. Trim correction
    3. Tape correction
    4. List correction
    • What is the guiding rule for limiting pressure surge during loading or Discharging
    1. Stop the cargo Pump
    2. First close the ESD valve nearest to the pump
    3. Finally close the ESD valve
    4. All of the above                 *
    • Why strainers are commonly installed in the cargo piping system ?
    1. To protect the cargo handling plant
    2. To protect equipment from damage by foreign objects
    3. Both A and B          *
    4. None of the above
    • Which of the following is the ultimate source of energy for us ?
    1. LNG
    2. Nuclear
    3. Solar   *
    4. CNG
    • What characteristics should insulation materials posses for use in gas carriers?
    1. Low thermal conductivity, ability to bear loads
    2. Ability to withstand mechanical damage Lightweight
    3. Unaffected by cargo liquid or vapour
    4. All of the above         *
    • Tank Relief V/V used for release of Excessive pressure
    1. True            *
    2. False
    • Which safety device is fitted on the deck inert gas line to monitor the supply condition of the inert gas?
    1. The inert gas high temperature alarm
    2. The inert gas low flow alarm
    3. The inert gas low pressure alarm          *
    4. The inert gas reverse flow alarm
    • How is cooling/Cleaning water supplied to the inert gas scrubber tower?
    1. By the main sea water pump
    2. By the cargo condenser pump
    3. By the scrubber sea water pump            *
    4. By the deck seal sea water pump
    • This liquefied gas is normally carried in its fully refrigerated condition at its atmospheric boiling point of -104 deg C is ______
    1. Ethylene           *
    2. Propane
    3. Butane
    4. Ammonia
    • The space enclosed by the ships structure in which a cargo containment system is situated called ______
    1. Hold space            *
    2. Compressor room
    3. Motor room
    4. Engine room

    • Self contained breathing apparatus SCBA is also called as
    1. Compressed air breathing apparatus – CABA                 *
    2. EEBD
    3. ELSA
    4. None of the above
    • How much cleaner is Natural Gas to burn?
    1. Reducing Co2 emissions by 20% to 30%                *
    2. Reducing CO emissions up to 75%
    3. Reducing NOX emissions by approximately 50%
    4. All of the above
    • If a centrifugal pump operating with a positive suction head becomes air bound, your FIRST response should be to _______
    1. Vent the casing        *
    2. Tighten the packing
    3. Close the discharge
    4. Reprime the pump
    • On all gas ships any pipe work entering or leaving the cargo tank must do so through the _____ of the tank
    1. Aft end
    2. Top            *
    3. Bottom
    4. Forward End
    • While commencement of loading cargo direct high pressure loading is advisable
    1. True
    2. False           *
    • One of the following is NOT an alarm on an inert gas plant
    1. Low pressure alarm
    2. Low oxygen alarm              *
    3. Deck seal low water alarm
    4. Scrubber high water level alarm
    • The purpose of remotely controlled measuring of tank levels are to measure
    1. Height from liquid surface to top stringers in the tank
    2. Height of liquid in the tank             *
    3. Height from bottom shell to top stringers in the tank
    4. Height of bottom girders in the tank

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