Podcast
Questions and Answers
What should operators do if abnormal conditions occur during the light-off or warm-up period?
What should operators do if abnormal conditions occur during the light-off or warm-up period?
- Shut down the boiler immediately and close the main and pilot test firing valves (correct)
- Report the abnormal conditions to the boiler manufacturer
- Wait for the abnormal conditions to disappear before taking any action
- Increase the heating rate to overcome the abnormal conditions
What should operators do before restarting the boiler if abnormal conditions are encountered?
What should operators do before restarting the boiler if abnormal conditions are encountered?
- Identify and correct the cause of the trouble (correct)
- Increase the fuel supply to overcome the abnormal conditions
- Consult with other boiler operators
- Ignore the abnormal conditions and continue with the warm-up process
What may operators notice from the stack when a cold oil-fired boiler is started?
What may operators notice from the stack when a cold oil-fired boiler is started?
- No visible exhaust
- Slight smoking (correct)
- Unusual odor
- Excessive steam
Why is it important for operators to pay attention to boiler warm-up rates?
Why is it important for operators to pay attention to boiler warm-up rates?
What does ASME VI Recommended Rules advise if abnormal conditions occur during boiler warm-up?
What does ASME VI Recommended Rules advise if abnormal conditions occur during boiler warm-up?
What is the main cause of incomplete combustion in a furnace?
What is the main cause of incomplete combustion in a furnace?
In which type of boiler does condensation occur more frequently?
In which type of boiler does condensation occur more frequently?
What is the result of firing cold boilers at too high a rate?
What is the result of firing cold boilers at too high a rate?
What is the best way to protect a boiler from the damaging effects of thermal shock and uneven expansion?
What is the best way to protect a boiler from the damaging effects of thermal shock and uneven expansion?
What factor affects the rate at which a boiler can be brought up to its normal operating temperature?
What factor affects the rate at which a boiler can be brought up to its normal operating temperature?
What should be the maximum rate of increase in boiler water temperature for larger boilers?
What should be the maximum rate of increase in boiler water temperature for larger boilers?
What is the expected drum pressure after 2 hours of firing for a boiler with relatively hot water on initial firing (79°C)?
What is the expected drum pressure after 2 hours of firing for a boiler with relatively hot water on initial firing (79°C)?
When should the water level control system for steam boilers be placed on automatic?
When should the water level control system for steam boilers be placed on automatic?
What should be monitored while the boiler is warming up and pressurizing?
What should be monitored while the boiler is warming up and pressurizing?
When should the firing rate control be switched to automatic after the boiler pressure approaches its normal set point?
When should the firing rate control be switched to automatic after the boiler pressure approaches its normal set point?
