Ian-Shields

4h July 2019; 0900 HRS
South Shields
Class 2 Oral Questions
GMA Candidate
– Documents check; ship types served on, types of propulsion systems on them?
– 4 Stroke Engine: PMS routine, piston and conrod removed by 3/E and stowed in W/shop;
What checks will you perform as 2/E?
– What damages could occur in big end brg shells; if condition and wear are within OEM’s
limits, would you re assemble same pieces; same with big end bolts?
– Air Conditioning unit planned maintenance checks?
– If Aircon Comp c/case oil level found low,reasons?
Where can oil be in the system? Oil Sep, drain line to compressor choked.
How to charge oil in this compressor?
– If refrigerant level found low,reasons?
– Reasons for comp tripping in HP?
– 2 Stroke Engine: One unit’s Exh Temp high,
Trouble shoot the problem
– Draw a Draw card, and on it explain normal working scenario in engine.
How to conclude whether Injection timing is correct or not?
Sketch effects of changes in Inj. timing on Draw card.
– How to check Fuel P/P timing?
If timing found to be early or late, what would you do to adjust to correct value?
– If Fuel p/p plunger and barrel are worn, what could have caused this?
– Where do Catalytic Fines find their way in the Fuel system?
What needs to be done onboard to prevent damage due to catalytic fines?
Explained the handling of onboard FO system to overcome this. (desludging, Purifier-Clarifier
mode, min possible throughput, Auto backwash filter operation check, more backflush
cycles, indicated by sludge tk level rising) — (here he mentioned of a problem
encountered-small pipes in DP alarm chamber choked not sounding the alarm, wear
abrasives, cat fines going unchecked downstream to the pumps.)
– What are problems associated with Vanadium in fuel?
– How to counter the problems due to vanadium content?
– Exhaust valve features which prevent problems due to vanadium in FO?
– What is Cold corrosion?
Why does this occur?
How to prevent this from happening?
– Tak eme through Entire process of Enclosed Space Entry.
– Engine cadet joins ship for first time. How will you as a 2/E take care of him/her in all
aspects?
– Boiler: What are the water tests carried out?
Excess chemicals in boiler water and their effects?
– DOL Starter: Power and Control Circuit, explain working.