Which of the listed devices may trip due to...

Question 1 of 270705eccefa0bacbc34ba4d46eb8

Which of the listed devices may trip due to total flame failure in both boilers of an automated plant?

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Question 1 of 27070

Q

Which of the listed devices may trip due to total flame failure in both boilers of an automated plant?

🔍 Key Concepts

• Automatic boiler safety shutdown systems in unattended/automated plants • How flame scanners/flame failure detectors protect fuel supply to burners and headers • Difference between local burner protection and plant-wide fuel shutoff

💭 Think About

• Ask yourself: if BOTH boilers lose flame, does the system just shut each burner, or does it protect the entire fuel supply feeding them? • Which device(s) must close to prevent fuel continuing to be supplied to a boiler with no flame present? • Is the main turbine throttle valve directly part of the boiler flame‑failure safety chain, or is it controlled by other parameters like steam pressure and load?

✅ Before You Answer

• Verify which solenoids are directly interlocked with flame failure (burner level vs main fuel header). • Consider what must happen to prevent fuel accumulation in furnaces after total flame loss. • Think about whether the turbine steam valve is a fuel‑safety device or a load/steam control device.