If for any reason, the burner should go out during normal operation, what must be done?

When the burner goes out during normal operation, it is crucial to immediately shut off the fuel supply to prevent any potential hazards. This step is essential for safety reasons, as unburned fuel can accumulate in the combustion chamber or the surrounding area, increasing the risk of a fire or explosion. By shutting off the fuel supply, operators can mitigate these risks and ensure that no dangerous conditions develop while addressing the outage.

After stopping the fuel supply, further inspection and troubleshooting can occur safely. This might involve checking the boiler for potential issues, determining why the burner went out, and deciding the appropriate steps to relight the burner or conduct repairs.

This approach prioritizes safety and aligns with standard procedures in power engineering, where controlling fuel sources is paramount to maintaining safe operation in boiler systems.