DieselShip's Online Content Library

Q1. (a) Explain in detail how the engine room’s hyper mist or high-pressure fog firefighting system works in auto mode and manual mode.

(b) How you would isolate hyper mist or high-pressure fog firefighting system for routine maintenance.  Describe all tests and inspections you would make and how you would return the system to service.

Q2. Sketch and show all parts of two-stroke engine’s Stuffing box. Describe the procedure of  in place (Without removing piston) overhauling two stroke engine’s Stuffing box. Your answer should include all safety precautions taken and proper tools used during overhaul of Stuffing box.

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?

Q4. Accidents regularly occur due to premature or accidental release of CO2 into machinery spaces. With reference to this, enumerate the procedure or arrangement that you as second engineer would adopt with respect of the following

A.  Contractors working on CO2 system;

B. Understanding between bridge and engine room in the event of a machinery space fire;

C. Familiarizing staff with the system;

D. Checks and tests are carried out before putting system in operation?

Q5. With reference to large two stroke engine:

(a) Explain how abnormal and excessive cylinder liner wear caused, state how it can be detected;

(b) explain the effects and consequences of excessive cylinder liner wear;

(c) explain how abnormal cylinder linear wear may be prevented.

Q6. Under Continuous survey of machinery (CSM) bottom end bearing of a large 2stroke slow speed engine is due for survey.

A. As second engineer, explain the procedure involved in complete inspection of a bottom end bearing.

B. List the precaution to be taken.

C. Indicate the reasons for possible defects which could be encountered and state how they may be rectified.

D. What test are carried out on completion of survey and re-assembly.

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.

Q8. Explain how EACH of the following hull defects should be dealt with;

(a) A cracked weld;

(b) A severe indentation in way of a frame;

(c) Surfaces suffering from general corrosion although the extent of wastage does not warrant plate replacement;

(d) A bilge keel fractured at the forward end.

Q9. Using sketches explain the difference between Pulse and Constant pressure turbocharger systems.

A. In the event of a Pulse turbocharger becoming inoperative due to mechanical breakdown explain the modifications required to allow the engine to operate safely.

B. State the instruction you as second engineer would issue regarding the additional engine monitoring requirements following the steps taken in (a).