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
How many segments is the port and stbd shaft line separated into?
What is the purpose for separating the shaft into different segments? (2 purposes)
Port: 4, Stbd: 5
Cost saving during partial replacement compared to the whole shaft replacement
Easier maintenance of the shaft
Fill the following data for the fixed fire extinguisher system. (4 marks)
a. Fixed CO2 cylinder capacity:_kg
b. Chemical name for FM200 gas:
c. Capacity of 1 foam tank:
d. Tank deck sprinkler system is divided into _ zones.
a. Fixed CO2 cylinder capacity : 6kg
b. Chemical name for FM200 gas: heptafluoropropane
c. Capacity of 1 foam tank: 4460l
d. Tank deck sprinkler system is divided into 5 zones.
State two freshwater top-up points on board ship
Port and stbd side door at the tank deck
Locate the RAS (Refilling at Sea) valve for freshwater
Aft engine room near the hydrophore
State the 4 types of heaters installed in the cold room
Door heater
Pan heater
Defrost heater
Pipe heater
State the coverage of the FWD & AFT UV sterilizer & Hot Water Calorifier.
FWD E/R
UV Sterilizer: STBD accommodation + Galley
Hot Water Calorifier: 2nd deck & above
AFT E/R
UV Sterilizer: PORT accommodation
Hot Water Calorifier: 3rd deck & below
Explain the function of the filter drier
Ensures that the coolant has not been contaminated with water, which may alter the coolant’s boiling point
Explain the function of the muffler
Reduce the noise of the A/C / Provi Plant
Explain the function of the accumulator
Stores any liquid freon after it passes the evaporator until it turns into a gas, to be pumped through the compressor
Explain the function of the receiver
Collects all the freon during and after the pump-down process
List down 4 modes of FM200 activation means.
Local Lever
Mechanical Pull Pin
FM200 LOP
MCR/ Bridge Mimic Panel
State the 6 conditions for the engagement of the gearbox.
L/O level higher than the dipstick max
M/E speed 330-345 rpm
CPP pitch 0 degree
Gearbox L/O pressure 16-20 bar
Shaft lock disengaged
Turning gear disengaged
State the function of a safety valve in the compressed air system.
What is the safety relief pressure on each stage of the air compressor?
Used to relieve pressure in the manifold if pressure is too high, prevent equipment failure due to high pressure
8 bar for stage 1 and 42 bar for stage 2
State 3 components that the generator’s LT/W cools, and 1 component the generator’s J/W cools
LT/W:
Charge Air, L/O, Alternator
J/W:
Cylinder Jackets
State the 6 components on the shaft line.
Plummer box bearing
Controllable pitch propeller and hub
Stern tube assembly
Shaft seal
Oil distribution box
Shaft locking device
State the 5-step start up procedure of the CPP on the HPU and CPP LOP.
- Set P1/P2 to “LOCAL” on PSP
- Switch P1/P2 to “START”
- Check oil pressure displayed on CPP HPU
4i. HPU: Set HPU to “LOCAL”,
4ii. CPP LOP: Set HPU to “REMOTE”, CPP LOP to “LOCAL” - With shaft at standstill, manoeuvre through buttons on control v/v of HPU/ on the CPP LOP while observing pitch on pitch scale.
List down the 6 pre-start conditions to be fulfilled before the main engine startup availability is active
- Turning gear not engaged
- Barring gear not engaged
- Fuel rack lever not locked down (as this would cut off fuel supply)
- M/E zero speed
- Gearbox at neutral/clutched out/disengaged
- Shaft not locked
State the 10-step process to F/W Bunkering/Topping up F/W from Wharf.
Monitoring
1. Go to the SCMMS to check sounding of the 4 F/W tanks.
2. Inform Chief MS of current water status and quantity to top up.
Preparation
3. Open the inlet valves of the F/W tanks that need to be filled.
4. Open FWD side door nearer to the top-up valve.
5. Station one operator at the wharf to receive the filling hose via side door.
Flushing
6. Connect the filling hose to the wharf top-up valve. Ship-side operator should hold on to the other end of the hose. Open Wharf top-up valve and flush hose with F/W to remove salt and particles. Close valve once done.
Top-up
7. Connect ship side hose end to the side door filling valve and open valve.
8. Open wharf top-up valve
Post Operation
9. Monitor water level of F/W tanks via SCMMS and close the F/W tank filling valves and top-up valve once done.
10. Drain hose of water before storing.
State the differences between Manual, Semi-Auto, and Auto modes of operation for the generator system.
Aux Engine:
Semi-Auto & Manual - Manual start & stop
Auto - A/E start/stop controlled by EGCMS, cuts in/out according to set parameters
Generator Circuit Breaker:
Manual - Manual open & close
Semi-Auto & Auto - GCB opens/closes automatically when engine is stopped/running.
Aux Engine Speed:
Manual - Manually increase & decrease speed
Semi-Auto & Auto - A/E speed controlled by EGCMS, changes according to load requirement
List down the zones of FM200 system and compartments protected
Zone 1: Aft E/R
Zone 2: MCR
Zone 3: Fwd E/R
Zone 4: Briefing Room
Zone 5: Electronic Room 2
Zone 6: CIC
Zone 7: Operations Room
Zone 8: Radio Room
Zone 9: Electronic Room 1B
State the uses of all the 9 valves in the Control Air Panel. (order must be correct)
- Gen 1 air flap shut off
- Gen 2 air flap shut off
- M/E mist detector vacuum p/p
- M/E fuel isolation v/v
- Gen 1 fuel isolation v/v
- Gen 2 fuel isolation v/v
- Gen 1 fuel blow down
- Gen 2 fuel blow down
- LT water v/v
List and describe the 11 things the M/E system needs to be ready in order for a remote start in MCR (4 general conditions, 6 pre-start conditions, 1 settings)
General
- Check header tank ¾, top-up if needed
- Check M/E L/O level >2 fingers above “MAX”, top-up if needed
- Check Governor L/O level ¾, top-up if needed
- Check air bottle pressure >30 bar, E-bottle pressure >27 bar
Start Conditions (check all from SCMMS pg 14)
- Turning gear not engaged
- Barring gear not engaged
- Fuel rack lever not locked down (as this would cut off fuel supply)
- M/E zero speed
- Gearbox at neutral/clutched out/disengaged
- Shaft not locked
M/E LOP on “REMOTE”, PCMS in MCR on “LOCAL”
State the 8 pre-start checks for the generator system.
- Check header tank, ensure L/O & Coolant sufficient
- Barring Gear disengaged
- Check for leakages
- Start air valve open
- Sea Chest and Overboard Discharge Valve open
- Lamp Test
- Test E-Stop
- Flush bottles and manifold
Explain what will be the observation, upon opening up the cover of the mechanical release box
Explain what will be the observation, upon pulling the gas release handle
The flightlight beacon (visual alarm) and sounder (audio alarm) will be activated
The warning light at each entrance of the protected zone “Ext Gas Release” lamps on both the FFDC panels will be lit and audio alarm will be deactivated upon the release sequence of the extinguishing gas
List down 8 safety instructions before operating the freshwater system
- All piping and connections must be free from dirt or corrosion so that the freshwater is hygienically safe for use
- Inspect Freshwater tanks and pipings periodically for corrosion and leakages
- Carefully clean the freshwater filling connections on the main deck and side doors with freshwater and disinfectant
- To prevent prolonged running of the freshwater pumps, ensure correct amount of compressed air is available in hydrophore tank (Correct water to air ratio)
- Only use pure drinking water and hose intended for pure drinking water. Flush hose with freshwater before use
- Do not “On” the Hot Water Calorifier without filling tank with water
- Do not operate the UV steriliser for more than 1 hour without freshwater
- Never run the freshwater pumps dry
State the 6 steps needed to be performed before the removal of an air bottle
- Close the inlet/outlet valve of air bottle
- Close the air supply to the 40 bar manifold (to prevent backflow of air to the airbottle)
- Close the interconnecting valve between the air bottles
- Open interconnecting valve between the 40 bar manifold
- Open the drain valve to drain all the air from the air bottle
- Perform LOTO on the affected air compressor
State the 9-step flushing procedure for the Main Engine.
Procedure:
1. Drain air bottle and 40 bar manifold to get rid of any water condensate
2. Open all 16 decompression v/vs
3. On the M/E ASP, switch to “LOCAL” and press “START” for L/O priming p/p
4. Open start air v/v
5. Depress fuel rack lever to cut off the fuel supply
6. Press manual air start button for 1s to clear/check for any particles inside the cylinders
7. Close all 16 decompression v/vs
8. Close start air v/v (not needed if you are starting M/E immediately after)
9. On M/E ASP, switch back to “REMOTE”. This should also turn off the L/O priming p/p
State the 9 locations that the sprinkler system covers.
- Armoury 1 & 2
- Gunbay
- Tank deck Zones 1 - 5
- Hanger/elevator room
- Ammo room
- Fwd/Aft Flight deck
- Aviation fuel pump room
- Aviation fuel dispenser rooms 1 & 2
- Mission planning room
State the 8 conditions for a fatal shutdown of the engine to occur.
- GBX L/O p < 10 bar
- Low L/O p (M/E <550rpm) < 0.7 bar, (M/E >550rpm) < 2 bar
- High L/O temp > 95 Degree C
- High J/W temp > 95 Degree C
- Overspeed trip > 1150 rpm (115% of max speed)
- M/E Failed to prime - L/O pressure unable to reach 0.4 bar in 30s
- M/E Failed to start - M/E unable to reach 150 rpm in 8s
- E-Stop Triggered
State how to operate the air compressor manually and automatically.
3 steps for AUTO, 4 steps for MANUAL
Manual
- Switch Air Compressor LOP to “M”
- Press “Start” button. Green operation light will light up.
- Continuously man the unit and observe the air bottle pressure via pressure gauge on the air bottle/SCMMS pg. 15
- Once pressure reaches 40 bar, switch Air Compressor LOP to “O” to turn off compressor.
Auto
- Switch air compressor LOP to “A”
- Air compressor will cut-in at 27 bar and cut out at 40 bar
- Switch Air Compressor LOP to “O” to turn off the compressor at any time.
Briefly describe what needs to be done to ensure a complete shutdown on a faulty generator for it to be safe and ready for maintenance. (8 steps)
- Ensure that the generator LOP and auxiliary starter panel are set to manual and power off
- Perform LOTO on the compressed air system
- Shut off the pneumatic air control supply at the control air panel
- Shut off generator pneumatic air control supply at the control air panel
- Release remaining air in the generator start air system
- Perform LOTO on the fuel system
- Shut off fuel supply to racor filter
- Activate the E-Stop and notify the MCR (Additional safety measure)
