Generator not coming on load

 Reasons: 

1. Generator lost its residual magnetism.
2. Faulty synchroscope.
3. Faulty Air Circuit Breaker.
4. Loss connection of Automatic Voltage Regulator. (exciter circuit may be open)
5. Faulty power cable.
6. Frequency and Voltage not matching with busbar.

Alternator Specification

 Brushless alternator 

Number of phases : 3

output: 937.5 KVA 

volts:  450V 

frequency: 60Hz 

RPM: 720rpm

Insulation : Armature 'F' class 

Rating: CONT

Power factor:  0.8 

Number of pole: 10 

Amps: 1203A 

Field: F'class 

Excitation phase: 3

Excitation output: 21.7KVA 

Excitation p.f: 0.95

Exciatation frequency: 84Hz

Excitation No. of poles: 4 

Excitation volts: 112V 

Excitation Amp: 112V 

Prime mover: Diesel engine 

(this is jz one of the example of  alternator specification. surveyor may ask this specification rarely and he will ask cross  questions about insualtion and its class,power generation, power factor ) 

Arrival port checklist

 Upon 1 hr. notice:

1. Stop FWG and shut valves.
2. Change over to high sea suction.
3. Soot blow Auxiliary boiler, check firing amd put on auto mode.
4. Check all air compressors oil level and put on auto mode.
5. Charge both air bottles and drain any water from bottles and air dryer. 
6. Shut and lock bilge overboard valve and hand over key to cheif engineer. Ensure that all bilge suction valves are shut, however not locked. [Thr security seals may be used to avoid inadvertent opening of any bilge suction valve]
7. Start additional generator for power to mooring machinery, thrusters, deck  water, etc.,
8. Shut steam to D.B F.O.T's.
9. Put on sewage plant and changeover valves. 

At standby

1. start additional generator as required.
2. At standby record M/E counter, flowmeter readings, L.O sump and cyl. oil tank levels.
3. Ensure adequate manpower available for arrival port.

At FWE (finish with engine)

1. Take over control from bridge to ECR and stop auxiliary blower.
2. Open indiactor cocks and engage turning gear.
3. Turn M/E by turning gear with cylinder lubricator rotated 20-30 turns each for about 15 mins.
4. Cover M/E T/C suction filters.
5. Put M/E on preheat and maintain temperature.
6. Stop unnecessary machinery and put off breakers. 
7. shift generator load and stop as required.

Departure checklist

1.  check M/E preheat temperature maintained between 60° - 70°C.
2. Check L.O p/p pr. and temp. within normal parameters.
3. Check crosshead L.O p/p pr. and current within normal parameters.
4. Check JCW p/p pr. and current within normal parameters.
5. Check M/E fuel pr. and viscosity/ temperature.
6. Check all standby pumps selected and reset repose switch.
7. Check control air/Exh. v/v spring air pr. normal.
8. Check Exh. Boiler circulating p/p running and pr. normal.
9. Check stern tube L.O p/p running; pr. normal and sump level OK.
10. Check all air compressors oil level and put on Auto mode.
11. Charge both air bottles and drain water to air bottles and dryer.
12. Confirm M/E L.O sump level normal.
13. Check M/E T/Cs and governor oil levels normal.
14. Check F.O purifier, service tank and drain tank levels.
15. Check L.O purifier running normal.
16. Check steering gear and confirms oil levels normal.
17. Complete all steering gear check with bridge.
18. Start 2nd generator or standby generator and take on load and put necessary breakers ON.
19. Turn M/E turning gear with indicator cocks open and cylinder lubricators rotated 20-30 turns each for about 15 mins.
20. Check M/E auto start air valve in auto/manual position and Auxiliary blowers on Auto.
21. Contact bridge, blowthrough M/E and try out ahead and astern.
22. Start additional generators as necessary.
23. In case of bridge control, hand over controls to bridge at standby.
24. At standby record all flowmeters, L.O sump level and Cyl. oil tank level.

Purifier Safeties

1. Back pressure low alarm and shut down
2. Back pressure high alarm and  shut down
3. Feed pressure low alarm and shut down
4. High oil temperature alarm and shut down
5. Low oil temperature alarm and shut down
6. Heavy phase overflow (purifier abnormal alarm will come)
7. Low sealing water pressure 
8. Bowl not open (detected by a current sensing relay)
9. water in oil (detected by transducer)

Boiler safeties

1.  Safety valve
2. Pressure gauge
3. Easing gear
4. Air vent
5. Water level indicators (Boiler control panel & ECR panel)
6. Boiler gauge glass
7. Low water level alarm
8. Low low water level alarm and shut down (Trip)
9. High water level alarm
10. Low F.O pressure alarm
11. Low F.O temperature alarm (Trip)
12. High F.O temperature alarm (Trip)
13. Low steam drum pressure alarm 
14. High steam drum pressure alarm (Trip)
15. Forced draught fan stop alarm
16. Flame failure alarm
17. Smoke density high alarm 

Note: surveyor will ask what are alarms and what are trips