David – Paisley

Chief Oral July Batch GMA Candidate: 6th Aug 2018, 1030 – 1130
1. Asked about my last ship engine – 2 and 4 stroke
2. How to read performance curve of an engine.
3. All indicator cards to draw (inc. light spring). Calculate Power.
4. Power loss from one unit only – USE COMPRESSION CARD AND FIND PEAK PRESSURE TO FIND GOOD SEALING OF THE PISTON RINGS. OTHER REASON BLOWBY OF EXHAUST VALVE.
5. Exhaust high temperature on one unit for 4 stroke – TAPPET CLEARANCE
6. Exhaust high temperature on one unit two stroke (not scavenge fire or faulty sensor) – bLOWBY EXHAUST VALVE AGAIN.
7. Motorship specific before entering and after drydock – CRANKSHAFT DEFLECTION.
8. Why there will be a possibility of misalignment after drydock. TIE BOLTS COOLS DOWN IN DOCK SO IT TENDS TO LOOSEN UP. PRESSURE FROM BLOCKS AND STRESSING THE HULL. PULLING FORCE WHEN PULLING THE PROPELLER.
9. How to take crankshaft deflection.
10. CO2 system in drydock – ISOLATED, BLANKED, NOTICE POSTED, ALL CREW TO BE INFORMED BEFORE THIS HAPPENS.
11. EIAPP certificate? Who issue and and some explaination – ENGINE MANUFACTURER ONCE THE BUILDING COMPLETED, THEY WILL ASK CLASS TO ATTEND TO WITNESS THAT THEY ARE COMPLYING WITH EEDI. ONCE OK, CLASS ISSUE THE CERTIFICATE TO THEM. IF WE BUY THE ENGINE, THE CERTIFICATE IS OURS.
12. NOX technical file details.
13. MAIB – Manhattan Bridge boiler explosion.
14. Danger of changing over fuel oil ECA. COMBINING OF DIFFERENT FUEL LED TO WAX FORMATION, BLOCKED UP FILTERS AND FUEL PIPES. LEAKING OF FUELS FROM PUMP SEALS DUE TO LOW SULPHUR.
15. ECA changeover procedure. What are the limits.
16. How to calculate the changeover time before ECA entry. I MENTIONED LLYODS CALCULATOR.
17. Bunker requirements. REFER TO SMS, MY SHIP 5 DAYS, 85 MCR. NORMALLY WE WILL TAKE INTO CONSIDERATION THE TIME TO GET ANOTHER BUNKER.
18. What is unpumpability from bunker tank. LOW SUCTION FROM BUNKER TANK.
19. Variable Frequency Drive as my engine is diesel electric. Draw and explain.
20. AVR.
21. Exhaust valve spindle and the seat material. SPINDLE NIMONiC ALLOY, SEAT STELLITE COATED.
22. What is the duration of PM for the exhaust valve. No solid answer for this because we burn LNG. No carbon like fuel. So longer running hours.
23. Air start diagram with reversing. Explain how to reverse. Safeties on air start system.
24. Air start valve maintenance running hours. What is air start explosion.
25. Bunker delivery samples, 3 BOTTLES ; 1 SHIP, 1BARGE, 1SHORE ANALYSIS. RETENTION ONBOARD 1 YEAR BUT CAN BE LONGER AS LONG AS THE FUEL IS TILL ONBOARD TO USE.
26. NOX reducing method. No explaination just give examples.
27. IAPP supplements, what are they?