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Following are different slow down situation for main engine:

• Lube oil pressure falls to 1.5 bar

• Cam shaft pressure falls below 2 bar

• There is no flow of piston cooling media (water or oil)

• Oil mist detector or Main bearing sensors has been activated

• Lube oil temperature at the inlet of engine is high > 60 deg C

• Piston Cooling temperature is  high > 75 deg C

• Jacket water Temperature is high > 88 deg c

• Engine cylinder exhaust temperature is high > 450 deg C

• Scavenge air temperature is high > 65 deg C

• Thrust block temperature is high > 75 deg C

• Low flow of Cylinder lube oil

• Control air pressure is low < 5.5 bar

Different Shut down Situations

• Lube oil inlet pressure to engine is very low <1 bar

• Cam shaft Lube oil pressure is very low < 1.5 bar

• Very high Jacket cooling water temperature >95 deg C

• Low Jacket cooling water pressure < 0.1 bar

• No flow of Cylinder lube oil

• Thrust block temperature very high > 90 deg C

• Lube oil inlet pressure for turbocharger is low < 0.8 bar

• Over speed of the engine which activates shut down at 107 % of Max. continuous rating MCR

 

Different Starting Interlocks are

• Turning gear engage interlock

• Auxiliary blower off interlock

• Lube oil and other important pump not running interlock

Apart from safety protections on a ship’s engine, various other systems to ensure that various other operations are not affected.

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