Exam Question

(a) If an auxiliary diesel generator overspeeds while off load, the overload trip should get activated and stop the generator. In the event of failure of overspeed device, the following steps can be taken to stop the engine:
Stop the generator from Engine control room.
If remote starting and stopping from the engine control room or any other position is not available, manually pull the fuel rack to the ‘zero’ position. This action reduces the fuel supply to the engine, causing it to stop.
If it is unsafe to approach the engine, stop the engine by shutting off the quick closing valve for the generator. This will cut off the fuel supply to the engine, leading it to stop. Note that this may cause a temporary blackout in the engine room if another generator is not running.