D semester

Various parts of the bilge line arrangement

match

Ερώτηση 1 (Πολλαπλής Επιλογής (Μοναδική Απάντηση) — 0 βαθμοί) 

The bilge line arrangement

Ερώτηση 2 (Πολλαπλής Επιλογής (Μοναδική Απάντηση) — 0 βαθμοί) 

The bilge line arrangement

Ερώτηση 3 (Αντιστοίχιση — 10 βαθμοί) 

parts of the bilge line arrangent

Στήλη Α Κάντε την αντιστοιχία Στήλη B
1. suction lines
A. A pumping device without moving parts (e.g. piston etc.) which is actu- ated by the high pressure of water flowing through it by the general service pump or the fire fighting pump. The high pressure of water creates a vacuum around the nozzle of the device, which causes the suction of bilge water. It discharges right overboard and it is generally used in emergencies.
2. distribution valve chest
B. Pipe lines which run from the manifold to the compartments they are connected with, and from the manifold through the double bottom to the bilge well. Bilge water is suctioned through them, if we open the appropriate valve.
3. separator
C. A huge tank of about 50m3 capacity where bilge water is pumped into, from the bilge well.
4. bilge holding tank
D. An appropriate box which contains valves, each of which controls the flow of bilge water from a bilge compartment or a bilge well
5. mud box
E. A valve which is controlled by a handwheel and a screwed spindle. When it is screwed down completely it stops the flow of water but when open, the water flows only one way, thus not allowing it to flow back to the bilge well.
6. non-return valve
F. A cleaning apparatus which separates oil from bilge water
7. strum box
G. A kind of filter on the suction line head which is a perforated basket, easily accessible and detachable, necessary to prevent ashes and other particles from ente- ring the pumps and choking them
8. main bilge line
H. A pump which suctions bilge water from the bilge well and discharges into the bilge tank or overboard. It is a self-priming pump which means it doesn’t need an- other pump to supply it with water for starting.
9. eductor
I. A pipe line situated in the engine room. It runs from the manifold to the suction side of the pumps.
10. bilge pump
J. A kind of filter