AIR COMPRESSOR
Q1. What is the use of air
compressor on board ship?
Ans:
It is use to produce the compressed air and store the air in air bottle/ air
receiver.
Q2. What are the uses of the
compressed air onboard ship?
Ans:
Starting main engine, Starting A/E, Service air, Control air, Whistle Air,
Hydrophore tank charging, Pneumatic tools.
Q3.What is the use of drain cock on
an air receiver?
Ans:
Drain cock on receiver remove oil and water to prevent corrosion. To drain condensate
and dirt deposited in air bottle.
Q4. What check you will carry out
while compressor is running.
Ans:
1. check
lubricating oil sump level
2. Lubricating
oil pressure
3. Cooling
water pressure
4. Discharge
air pressure
5. Drain
on each stage cooler
6. Motor
ampere
Q5. What will you do if you find
that lubricating oil level in the crankcase has come down?
Ans:
stop the compressor and replenish the oil.
Q6. Where does the air from the air
compressor go to?
Ans:
To air receiver via air cooler.
Q7. What precaution you will
observe while working with compressed air.
1)
Should
not be directed toward the body
2)
No
leakage
3)
Hoses
and coupling in good condition
4)
Pressure
as required
Q8. What are the precautions you
will take while working on compressor?
1. Isolate
the compressor.
2. Switch
of the motor
3. Put
men at work notice
4. Shut
delivery valve
5. Shut
cooling water valves
Q9. What are safety devices are
fitted on main air compressor.
Ans:
1) Bursting
disc
2) Relief
valve after each stage
3) Drain
vale for moisture/ Unloader valve
Q10. What are the safety devices
are fitted on air receiver?
Ans:
1) Pressure
relief valve
2) Drain
valve
3) Air
vent
4) Pressure
gauge
5) Fusible
plug if safety valve is not directly fitted on air receiver.
6) Low
air pressure alarm