DieselShip's Online Content Library

Q1. (a) Explain how can the cooling spaces within a cylinder jacket be examined without withdrawing the cylinder liner?

(b) To what parts of a cylinder jacket would give attention after removing an old cylinder liner prior to fitting a new one?

(c) What periodic attention must be given to the scavenge air space and piston-rod packing (Stuffing box) at the bottom of a cylinder liner?

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.

Q7. Briefly describe your action plan on following exigencies:

A. Leaky economizer tube, while at sea;

B. Leaky intercooler of main air compressor, while manoeuvring.

Q3. (a) With the aid of a simple sketch, explain the “trouble spots” in a basic air-conditioning unit and with reference to your sketch, explain the following: -

(a). How the problem of increase in humidity of cooled air is overcome?

(b). How discomfort caused by the excessive drying effect of heated air is overcome?

Q2. A). Describe the overhaul of a boiler safety valve and explain using sketches where necessary those parts which require particularly close attention;

B). Describe the setting of boiler safety valve to comply with classification society requirements.

Q6. (a) Explain the possible reasons T/C vibration while operating at a steady speed.

(b) State how the incidence of turbo charger vibration might be minimized.

(c) explain the action to be taken in order to maintain 2 stroke engine operation in the event of a turbo charger having to be taken out of service.

(d) Indicate the effect this action will have on engine operation

Q5. A.  During the weighment of CO2 bottles required for total flooding of Engine room, it was observed that few bottles are less than the original capacity.  State the reasons for the same and checks / tests to be made prior refilling;

B. With reference to MSC1/Circ.1318/Rev.1, high pressure cylinders (CO2 bottles) are subjected to an internal inspection and hydrostatic test and periodic test. State the stipulated criteria for such hydrostatic test and periodic test interval of high-pressure cylinders (CO2 bottles).

Q3: Your ship after having been accidentally grounded was taken to a dry-dock for inspection and necessary repairs. What defects would you look for in the following parts, that may have sustained damage due to grounding and suggest methods of repairs and tests that may be required to be carried out to the defects noticed:

A. Propeller and tail end shaft.

B. Main engine crankshaft.

Q6. With Reference to Main Engine Fuel Pumps.

(a) Explain how the setting of a variable injection timing fuel pump is checked and adjusted.

(b) State why it may be necessary to adjust the settings of a variable injection timed fuel pump.