What are the corrected actions of boiler failures or alarms when detected?

Boiler Fails to Meet System Load Corrective action is to check the thermostat setting. Another possible cause is poor combustion. Recommended action is to check flue, flame, and assess combustion quality.

What are your immediate actions if you encounter flame failure?

When a flame failure occurs in a boiler, the boiler desk operator and the local operators will have to act immediately and bring the boiler back on line with all safety taken in to consideration. It is always seen that the greatest number of explosions in boilers takes place during start-up and shutdown.

What are the procedures in starting the auxiliary boiler burner in emergency operation?

Starting Boiler and Pressure Rise

• Check that the gauge board valve and pressure gauge valves are opened.
• Check that the air valve is open if the boiler pressure is below 1.0 bar.
• Start the burner on manual control and on low load.
• Drain via the blow down valves if the water level is too high.

How do you carry out corrective actions during auxiliary boiler failure?

Remedial Actions:

• Isolate the pump and rotate the shaft by hand. Check for possible reason of tight rotation. Check line valves.
• Check the electrical circuit for any possible fault.

What are the safety precautions prior to boiler firing?

Make sure that the boiler vents are not restricted by any kind of obstruction such as cloth etc. Always check for the leakages of steam, water, air and flue gases from any suspicious place. Follow boiler manual for safe and efficient working of your boiler.

What is flame failure in boiler?

The flame failure trip in a typical boiler can be due to one of the following reasons: loss of ignition; fuel valve closed, unstable flame, low airflow, very high furnace pressure, dirty flame sensor and loss of electrical supply.

Why do boilers flame failure?

If the flame eye unit is malfunctioning, then it will give a trip signal even before the burner starts firing. If the flaps are malfunctioning then continuous forced air will go inside the chamber, preventing the burner to produce flame causing flame failure of the boiler.

What precautions should be taken before starting fire in a boiler?

Immediately prior to boiler start-up perform the following:

1. Check that all ventilation and combustion air openings and louvers are clean and free of debris.
2. Verify boiler water level.
3. Check that all stack dampers are open.
4. Examine the boiler furnace for foreign material.

How do marine boilers work?

The marine boiler works on the simple principle of changing the state of water from liquid to vapor using heat energy. The water is boiled in enclosed pressure vessels so that the steam produced is not lost to the atmosphere.

What is flame eye in boiler?

A Flame eye is a photocell operated flame sensor fitted directly on the refractory to detect weather the burner is firing or not. If the flame eye unit is malfunctioning, then it will give a trip signal even before the burner starts firing.

How do you test a flame failure on an auxiliary boiler?

There are different ways to perform the boiler flame failure test. But the most common of them is by taking out the flame eye gently to get an alarm and verify its working. It is part of the periodic maintenance and checks to verify that all the boiler safety systems are working.