Combined Papers Flashcards
State the various locations for the operator to clutch-in and -out.
Gearbox Solenoid Valve @ Gearbox
M/E LOP
PCMS in MCR
State the operating cut-in and -out pressure for master and slave freshwater pumps
Master Pump C/I: 3 bar; C/O: 5 bar
Slave Pump C/I: 2 bar; C/O: 4 bar
State the L/O and J/W TEV settings
L/O: 78 celsius
J/W: 82 celsius
State any 2 components from the generator that require the control air supply to function
generator air flaps
pneumatic fuel isolation valves
State the 6 users of the 7 bar manifold.
State the 6 users of the 40 bar manifold.
7 bar manifold:
- 9x S/C blow down
- 23x Service Air outlets
- F/W hydrophore tank
- Inflatable Shaft Seal
- Oily water separator
- F/O purifier control air
40 bar manifold:
- Service air manifolds
- Control air panel
- Gen start air
- Air horn
- M/E start air
- Adjustable tire air inflator
Fill in the required fields of the CPP systems as stated below:
Servo pump capacity
Booster pump capacity
Max working pressure
Propeller rotation direction (Port/Stbd)
Servo pump capacity: 18 litres/min @ 1745 rpm
Booster pump capacity: 31 litres/min @ 1745 rpm
Max working pressure: 70 000 kPa
Propellor rotation direction (Port/Stbd):
Port: ACW
Stbd: CW
Explain the difference between “FATAL” and “NON-FATAL” shutdown characteristics of the M/E
Fatal: Shut down without cooling, causes damage to engine components
Non-fatal: shut down with cooling, engine given time to idle, pump down
What are the two purposes of the plummer box bearings?
Reduce friction between the plumber box and shaftline
Prevent sagging of the shaftline
What are the two cooling mediums for the plummer box bearings?
Seawater and L/O
State the 2 compartments that require the opening of 2 isolation valves to activate the sprinkler system.
Armoury and Gunbay
State the area and location that is protected by the fixed CO2 extinguishing system.
Galley Exhaust Ducting
Explain the purpose of defrosting mode for the provisioning plants.
Prevent icing from forming on the cooling fins of evaporator, blocking the flow of cold air, resulting in food spoiling faster
Prevents ice from forming on the coaming of the cold room door which might cause it to jam and trap operators in the room
List 6 safety considerations when operating Plant A air-conditioning system.
- Only qualified and trained personnel should operate and repair the system
- Ensure that no other maintenance works are in progress before starting
- If any safety device shuts down the compressor, determine cause of shutdown before resetting compressor
- Shut down system if excessive vibrations is experienced at the compressor unit. Check couplings mounting bolts and overall unit for abnormalities
- Prior to compressor start up, ensure the crankcase heater is turned on for at least 24 hours
- Do not operate wall mounted units without filter or grille removed
List down 4 of the possible faults that will lead to a non-fatal shutdown of the main engine (4 marks)
GBX low L/O p<12 bar
Metal particles detected
Crankcase mist detected
Journal bearing temp >91℃
List the 6-step procedure to do oil check for air compressor.
- Turn off compressor on the LOP
- Remove dipstick and clean
- Put dipstick fully into the air compressor, pull it back out
- Make sure oil level of dip stick is 3/4 level
- Put dipstick back in
- Turn air compressor back on.
Fill in the required fields of the CPP system as stated below (4 marks)
Power pack oil capacity: _ Litres
Drain tank capacity: _ Litres
Gravity oil tank capacity: _ Litres
Drain pump (P5) capacity: _ Litres/ min @1700 rpm
Power pack oil capacity: 600 Litres
Drain tank capacity: 40 Litres
Gravity oil tank capacity: 55 Litres
Drain pump (P5) capacity: 13 Litres/ min @1700 rpm
State the parameters for the following
Clutch-in pressure range:
Speed of engine prior to clutch in:
Clutch-in pressure range: 16 to 20 bar
Speed of engine prior to clutch in: 330 to 345 rpm
What is the main function of an AHU (air handling unit)?
Take atmospheric air, cool and clean it to be supplied as fresh and cold air in compartments
State the total quantity of AHU for zone A and zone B air conditioning units respectively.
18 AHUs in Zone A and 4 in Zone B
List 6 safety instructions to follow prior to starting the generator. (4 marks)
- Operator is to wear ear mufflers
- Ensure engine room is adequately ventilated
- Only qualified personnel is allowed to start the generator
- Ensure machinery is free from obstruction at rotating parts
- Visually check the system for leaks
- Ensure generator components are not undergoing maintenance