Day: 24 December 2022

Marine Auxiliary BoilerQ1. Using a diagram of a boiler, the candidate can be identify different components of boiler (steam generator) ANS: Furnace, Burner, Gauge Glass, Steam stop valve, Feed check valve, Air cock, Blow down valves, Soot blower Q2.What is the importance of gauge glass ANS: To check the boiler water level Q3. How will you make sure the boiler gauge glass is working? ANS: By blowing down the gauge glass. Q4.How much water level should be maintained in the boiler? ANS: ½ to ¾ level in the gauge glass. Q5. How many gauge glass is fitted in the boiler and why? ANS: Two. If one is not working or any maintenance is on it, you can see the water level from the other. Q6. How many safety valves are fitted in the boiler? ANS: Two. If one is not lifting the other will definitely lift in case of over pressure. Q7. What are the various mountings of a boiler? 1. Main steam stop valve 2. Feed check valve 3. Blow down valve 4. Salinometer 5. Sight glass 6. Feed regulator 7. Gauge glass 8. Safety valve Q7. What is risk involved in working near boiler. ANS: Blow back or flash back or explosion in the furnace due to unburn fuel deposited on repeated misfire. It can injure the person nearby. Q8. What are the uses of steam on board ship? ANS: Steam can be used for heating fuel oil, heating domestic water for bath, for cooking purpose in galley, and cabin heating in cold climate. Q9. How to blow down boiler gauge glass? ANS: The following procedure should be follow for blow down the gauge glass 1) Shut the steam and water cock. 2) Open the drain cock and see drain is clear. 3) Open the steam cock and steam cock, shut the steam cock. 4) Open the water cock and see water cock is clear, shut the cock. 5) Now shut the drain cock. 6) Open the water cock first. 7) Now open the steam cock. 8) Check the water level is showing in gauge glass. Q10. How many types of boiler used on board ship. Ans: Two types of boiler used on board ship. 1) Water tube boiler 2) Fire tube boiler

Day: 24 December 2022

MEK Oral Questions on Marine Auxiliary Boiler

MEK Oral questions on Air Compressor