Question 177Electricity/Electronics - QMED70% to pass
Diesel-generators number 1 and number 2 are operating in parallel at near full load capacity. Diesel-generator number 1 suddenly trips out mechanically due to low lube oil pressure. The reverse power relay functions properly and trips generator number 1 electrically off the board. Which of the following actions should you carry out FIRST?
AI Explanation
The correct answer is B) Strip the board of all nonvital circuits.
When a diesel-generator trips offline due to a mechanical failure, the immediate priority is to maintain the power supply to vital systems. Stripping the board of all nonvital circuits will ensure that the remaining generator can handle the reduced load and continue to provide power to critical equipment. This action takes precedence over investigating the cause of the failure or attempting to restart the tripped generator, as the immediate concern is to stabilize the power distribution.
The other options are not the correct first step in this scenario. Starting the emergency generator would be a secondary action, once the load has been reduced. Ascertaining the cause of the low lube oil pressure should be done, but after the load has been managed. Resetting the reverse power relay and restarting the engine can only be done once the immediate power supply issue has been addressed.
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