DieselShip's Online Content Library

Q1: Describe how the following conditions are prevented in auxiliary boilers:

A. Feed contamination by oil from heating coil drains.

B. Internal corrosion.

C. Furnace blowback.

D. Uptake fire.

Q1: A. Outline the procedure for the inspection of the rudder in a dry dock.

B. What are the requirement with respect to steeling gear as per SOLAS 74, as amended for the following:

i. Relief valve;

ii. Steering gear control;

iii. Electrical power circuits.

Q6. A. State the circumstances owing to which it may be necessary to renew a cylinder liner.

B. Explain how the liner is removed

C. Explain how the new liner is fitted; State the important checks to be made before and after fitting.

Q4. Discuss the advantages and disadvantages of adopting the following policies for maintenance of main and auxiliary diesel engines. A. Planned maintenance; B. Condition monitoring; C. Periodic replacement of components. D. Break down maintenance

Q5. With reference to air receivers and bottles explain with reasons: A. Why regular systematic internal inspection is advisable? B. Which internal areas of large receivers should receive particularly close examination? C. How bottles are inspected internally and what parts should be closely examined? D. How the condition of a bottle or receiver that cannot be inspected internally is checked?

Q1. A). Describe the procedure for opening a bottom end bearing for inspection making reference to the positioning of the crank and the safety precautions to be observed.

B). State how the bearing clearance may be checked and adjusted when necessary

C). State TWO defects, which may be encountered during inspection of the bottom end bearing and crankpin giving possible causes of EACH.

D). State TWO checks, which should be made before returning the engine to service following overhaul of the bottom end bearing.

Q2.  Describe TWO methods of tracing a superficial crack in a marine machinery component; Explain the procedure for arresting propagation of a crack in a machinery component.

Q8. Describe the hull inspection that you would carry out in the dry dock stating what inspection you would make as the work started during and after completion of work of the following RUDDER Inspection of large seawater inlet chest and valve, A. Anchor cables; B. Forward end of ship; C. Propeller and stem bush; D. Opening in shell plating; E. Shell plating.

Q4. With reference to steering gear hydraulic systems:

A. Explain the factors that could contribute to failure of connecting flange leading to total loss of oil from the system.

B. Describe an arrangement designed to ensure that the problem would not cause steering failure.