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
- Evaporation
- Heat ingress
- Drop in pressure
- All of the above *
- What are the necessary condition that must be take place for an electrical discharge to occur
- Electrostatic separation
- Electrostatic accumulation *
- Electrostatic discharge
- All of the above
- Gas ships cargo compressor room, cargo Tank area are
- Snap back area
- Gas free area
- Gas dangerous *
- All of the above
- On board LNG tanker which of these equipment is not required for gas burning
- Vacuum pump *
- Gas heater
- Compressor
- Steam dump on main condenser
- Which of these would you consider essential equipment to carry when working on the deck of ship carrying ammonia ?
- Gloves
- Personal 02 meter
- Gas mask *
- Personal hydrocarbon alarm
- What is the condition of the inert gas as it produced by the boilers of inert gas generator?
- Free of oxygen and clean *
- Hot and containing shoot particles
- Dry and saturated
- Superheated and black or greyish in Colour
- For what reason cargo sampling is necessary in gas tankers?
- To establish safe conditions prior to cargo transfer
- To establish that the cargo is within commercially agreed specifications at various pumps
- Both A and B *
- 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?
- Over pressurizing of the gas side of the heater
- Freezing of water side of the heater *
- Over pressurizing of the water side of the heater
- Over heating of the gas side of the heater
- Magnesium, Titanium, Sodium, Lithium and Potassium are classified as:
- Class A fire
- Class B fire
- Class C fire
- Class D fire *
- On tanker vessels which of these valve type is most commonly used in conjunction with hydraulically actuated controls?
- Non return valves
- Globe valves
- Butterfly valves *
- Gate valves
- What is the critical temperature of Methane in Deg Celsius?
- -82.5 *
- 82.5
- 52.8
- None of the above
- On tankers vessel equipped with the power operated cargo tank valves the type of power operator most commonly used is _____
- Hydraulic *
- Electric
- Steam
- Diesel
- A bigger Spell of LPG will be visible as a _____ which is condensed water vapour from the atmosphere
- White cloud *
- Blue cloud
- Black cloud
- None of these
- If cargo density is different from that specified by the float gauge manufacturer what will you adjust
- Float correction *
- Trim correction
- Tape correction
- List correction
- What is the guiding rule for limiting pressure surge during loading or Discharging
- Stop the cargo Pump
- First close the ESD valve nearest to the pump
- Finally close the ESD valve
- All of the above *
- Why strainers are commonly installed in the cargo piping system ?
- To protect the cargo handling plant
- To protect equipment from damage by foreign objects
- Both A and B *
- None of the above
- Which of the following is the ultimate source of energy for us ?
- LNG
- Nuclear
- Solar *
- CNG
- What characteristics should insulation materials posses for use in gas carriers?
- Low thermal conductivity, ability to bear loads
- Ability to withstand mechanical damage Lightweight
- Unaffected by cargo liquid or vapour
- All of the above *
- Tank Relief V/V used for release of Excessive pressure
- True *
- False
- Which safety device is fitted on the deck inert gas line to monitor the supply condition of the inert gas?
- The inert gas high temperature alarm
- The inert gas low flow alarm
- The inert gas low pressure alarm *
- The inert gas reverse flow alarm
- How is cooling/Cleaning water supplied to the inert gas scrubber tower?
- By the main sea water pump
- By the cargo condenser pump
- By the scrubber sea water pump *
- 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 ______
- Ethylene *
- Propane
- Butane
- Ammonia
- The space enclosed by the ships structure in which a cargo containment system is situated called ______
- Hold space *
- Compressor room
- Motor room
- Engine room
- Self contained breathing apparatus SCBA is also called as
- Compressed air breathing apparatus – CABA *
- EEBD
- ELSA
- None of the above
- How much cleaner is Natural Gas to burn?
- Reducing Co2 emissions by 20% to 30% *
- Reducing CO emissions up to 75%
- Reducing NOX emissions by approximately 50%
- All of the above
- If a centrifugal pump operating with a positive suction head becomes air bound, your FIRST response should be to _______
- Vent the casing *
- Tighten the packing
- Close the discharge
- Reprime the pump
- On all gas ships any pipe work entering or leaving the cargo tank must do so through the _____ of the tank
- Aft end
- Top *
- Bottom
- Forward End
- While commencement of loading cargo direct high pressure loading is advisable
- True
- False *
- One of the following is NOT an alarm on an inert gas plant
- Low pressure alarm
- Low oxygen alarm *
- Deck seal low water alarm
- Scrubber high water level alarm
- The purpose of remotely controlled measuring of tank levels are to measure
- Height from liquid surface to top stringers in the tank
- Height of liquid in the tank *
- Height from bottom shell to top stringers in the tank
- Height of bottom girders in the tank
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