PUMPS
Q1. What will you do if you see a
pump gland is leaking?
Ans:
inform to duty engineer. Then tighten both the nuts of the gland equally
simultaneously see the pump gland is not getting hot. If the leakage is not
stopping isolate the pump and renew the pump gland packing.
Q2. What to do if the pipe in the
discharge line starts to leake?
Ans:
Start stand by pump. Stop the pump and shut the valves. Repair the pipeline.
Q3. Name two pumps that are known
as positive displacement type.
Ans:
Reciprocating pump and gear pump, screw pump.
Q4. Name pump that is commonly used
on ships but is not positive displacement type.
Ans:
Centrifugal pump.
Q5. Which type of pump can be
started if discharge valve is closed?
Ans: Centrifugal pump.
Q 6.What is mean by pumping system?
Name two pumping system you know.
Ans:
It is a system of pipelines, valves and pumps for pumping various fluids such
as sea water, fuel oil, lubrication oil.
Q7. What checks you will carry out
before starting a pump?
Ans:
Before
starting a pump lock the start button locally and then turn the pump by hand to
check its freeness.
Check
both suction and discharge valves are open.
Q8. What will you check when pump
is running?
Ans:
1.
Suction
and discharge pressure
2.
Motor
ampere
3.
Any
abnormal sound vibration or leakage
4.
Pump
bearing is not hot
5.
Gland
is cool
Q9. Why a coupling guard is fitted
on the pump?
Ans:
to prevent from injury to personnel
Q10. What is the difference between
pressure and vacuum?
Ans:
Pressure is above atmosphere pressure. And vacuum is below atmosphere pressure.
Q11. What are the different types
of pump used on board ship.
Ans:
1) Centrifugal
pump
2) Gear
pump
3) Screw
pump
4) Reciprocating
Q12. Which type of pump used in
bilge system and ballast system?
Ans:
·
Reciprocating pump is used in bilge
system.
·
Centrifugal pump is used in ballast
system, sea water system.
Q13. What is the use of gear and
screw pump?
Ans:
gear and screw pump are used in oil system.
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