Auxiliary Engine Safeties

1. Thermometer
2. Pressure gauge
3. Dip stick
4. crankcase door relief valve
5. cylinder head relief valve
6. F.O low pressure alarm
7. L.O low pressure alarm and trip
8. L.O high temperature alarm
9. Cooling F.W high temperature alarm
10. Cooling F.W low pressure trip
11. Fuel leak tank alarm
12. Starting air pressure low alarm
13. Exhaust gas high temperature alarm 
14. Windings high temperature alarm
15. Pedestal bearing high temperature alarm
16. Overspeed trip
17. Reverse power relay

Main Engine Auto slow down reasons

Main Engine (Auto Slowdown)

1. Oil mist high density
2. Scavenge air box fire
3. Main L.O low pressure
4. Cylinder cooling F.W low pressure
5. Cylinder L.O non-flow
6. Cylinder cooling F.W high temperature
7. Piston cooling oil high temperature
8. Stern tube bearing high temperature 
9. Thrust bearing segment high temperature
10. Exhaust gas outlet high temperature/high deviation
11. Exhaust Gas Economizer high temperature
12. Exhaust Gas Economizer water non-flow

Main Engine safety devices

1. Crankcase relief door
2. Scavenge space relief door 
3. starting air line relief valve
4. cylinder head relief valve
5. Flame trap
6. Oil Mist Detector
7. Running direction interlock
8. Turning gear interlock

Em'cy Batteries supply (30 mins)

1. Em'cy lighting
2. Navigational lights
3. Fire detection and alarming system
4. Internal communication equipment
5. Daylight signalling lamp and ship's whistle. 

what are the equipment which get supply from em'cy generator?

1. Em'cy lighting to alley way/lifeboat embarkation deck/ engine room
2. Navigational system
3. steering gear
4. Em'cy fire pump
5. Em'cy air compressor
6. Battery charging
7. Fire detection and alarming system
8. Radio equipment (communication equipment)
9. Daylight signalling lamp and ship's whistle
10. Navigation Aids
11. General alarm
12. Manual fire alarm
13.  Watertight doors

EMERGENCY SWITCHBOARD

 what is Em'cy switchboard?

• It is a switchboard which distributes emergency load that power is supplied from emergency generator during main switchboard failure.
• It has two sections. one for 440V another is 220V.
• Under normal conditions, 440V supply is taken from Engine Room MSB through a circuit breaker.
• when main power is lost, this circuit breaker is tripped (opened)
• Emergency generator comes into action and supplies power through another circuit breaker. 
• An interlock is given to prevent closing of both breakers simultaneously.

Em'cy switchboard distribution:

1. Em'cy bilge p/p (440V)
2. sprinkler system (440V)
3. one of the steering gear motor(440V)
4. Navigation equipment.(220V)
5. Radio Communication.(220V)
6. Transformed and rectified supply to battery system (220V)
7. Transitional em'cy power battery(em'cy lights for 30 mins)
8. Low power DC system battery(Alarms and control system)