Ship Operations. Test 7

When is it necessary to run two pumps or more in serial?

If the back pressure when discharging is so high that one pump is not able to deliver any cargo.
To maintain a certain manifold pressure.
To double up the delivery capacity.
When the capacity requirement is higher than the performance of one centrifugal pump.

What is very important before starting a steam driven piston pump?

That all the valves on the suction side are open and on the delivery side are closed.
It doesn
That all the valves on the delivery side are open before starting.
That the pump is running before any valves are opened.

To be allowed to ballast departure ballast tanks on a clean ballast tanker using some of the cargo tanks for this purpose, what kind of certification is needed?

A dry certificate has to be issued.
Permission from the terminal.
According to the charter party.
No special certification.

What is the purpose of introducing inert gas into each cargo tank.

Just to introduce inert gas.
To control the tank atmosphere by introducing the required inert gas.
To dump the cargo vapour.
Just to be used during tank washing.

Why is it important to have good list during final draining?

To bring the remaininig oil to the stripping suction
Makes it easier to maintain good suction on the eductors
Not important if you have remote controlled drain valves
Suction in centertanks are located on port side

Where can you find the requirements regarding the number of persons required on duty during oil transfer ?

Oil Record Book
International Safety Guide for Oil Tankers and Terminals (ISGOTT)
Oil Transfer Procedure manual
IOPP certificate. ( International Oil Pollution Prevention )

To connect the loading/discharging hoses/arms it is usually necessary to connect a reducer on board to fit the shore connection. What is the common name to where the reducer is connected on board.

Presentation flange.
Manifold valve flange.
Loading flange.
Discharging flange.

When using ejector for stripping, in what order will you open the valves?

No special order.
All valves on the delivery side and adjust the propellant pressure.
The ejector
First the driving water pressure valve.

Review Answers

Ship Operations. Test 7

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