Oilers/Plant Tenders (HHC) Civil Service Practice Exam

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Which activity is NOT necessary before starting a forced draft fan unit that has been shut down for some time?

Check for Obstructions
Open up the suction air valve
Inspect the Fan Blades
Test the Electrical Connections

The correct answer is: Open up the suction air valve

Opening the suction air valve before starting a forced draft fan unit that has been shut down for some time is not strictly necessary. While ensuring that the system is ready for operation is important, the primary focus should be on confirming the overall condition and safety of the fan unit itself. Checking for obstructions helps ensure that nothing is blocking the airflow or causing potential damage or failure when the unit is restarted. Inspecting the fan blades is crucial for ensuring they are in good condition and free of any wear or damage, as damaged blades can lead to operational inefficiencies or failure. Testing the electrical connections is vital to verify that everything is functioning properly and safely, preventing extensive damage or hazards during operation. In contrast, opening the suction air valve can often be done at a later stage in the startup process or may already be handled by automated systems in place. This step can sometimes be taken as a preparatory action once everything else is confirmed to be operating correctly, which is why it is not considered essential before starting the unit after a prolonged shutdown.