單項(xiàng)選擇題

Hygroscopic cargoes should be ventilated when（）.

A.going from a warm to a cold climate
B.the dew point of the outside air is greater than the dew point of the air in the hold
C.the dew point of the air in the hold is very low
D.the outside dew point is 16°C and the cargo temperature is 12°C

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單項(xiàng)選擇題

How should cargo tank hatches be protected when the ullage opening is open and the tank NOT gas free?（）

A.With gooseneck vents
B.With warning signs
C.With flame screens
D.With pressure-vacuum relief valves

單項(xiàng)選擇題

How does an inert gas system on a tanker function to prevent explosions in cargo tanks? （）

A.De-energizes the "charged mist" effect
B.Maintains a positive pressure on the vent header to cool the flammable vapors
C.Inert gas filters out the flammable vapors from the cargo tank spaces
D.Inert gas dilutes the flammable vapor and air concentrations to keep them below the lower explosive limit

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Hygroscopic cargoes should be ventilated when（）.

你可能感興趣的試題

How should cargo tank hatches be protected when the ullage opening is open and the tank NOT gas free?（）

How does an inert gas system on a tanker function to prevent explosions in cargo tanks? （）