Day: 21 December 2022

PUMPSQ1. 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.

Day: 21 December 2022

MEK Oral questions on Pumps, Auxiliary machinery

MEK Oral questions on valves, Auxiliary Machinery