sample boiler questions. very good.

1. What are the precautions to be observed when starting any boiler that has been closed down overnight?

Are there any special precautions required before starting a gas burning boiler?

2. How do you bring a newly-started boiler on line?

3. How do you determine whether the feedwater check valve for the boiler is not closing?

4. What causes foaming in the boiler? How do you know when a boiler is foaming? How do you stop foaming in a boiler?

5. What is boiler priming? What causes priming? How can priming in a boiler damage an engine or pump?

6. What would you do if the pressure gauge on the boiler registered 150 PSI and you knew the safety valve was set to open

at 100 PSI?

7. How do you test a safety valve to see if it operates at the proper set pressure? What is the difference between a safety

valve and a relief valve? How often do you test these valves? How is a leaking safety valve repaired?

8. How do you change the pressure setting of a safety valve if it popped at a pressure less than the steam pressure you

desired? Would you install a shut-off valve between the boiler and its safety valve?

9. What causes heavy black smoke from the firebox of an oil-burning boiler?

10. What does heavy yellow smoke from the firebox of an oil-burning boiler indicate?

11. Name some of the causes of an excessive amount of accumulated soot in the firebox and tubes of an oil burning boiler.

12. How often should a boiler be blown down? If the boiler water is treated, is it necessary to blow down the boiler

everyday? Why? What is the purpose of treating the boiler water? What is TDS?

13. What would you do if you could not see the water level in the boiler gauge glass while the boiler is in operation? What

would you do if the water level in the gauge glass shifted up and down?

14. If the boiler feedwater pump is operating and the water level in the boiler is not rising, what is the best thing to do? Can

you increase the speed of the feedwater pump for more water volume?

15. What is boiler water pH? What pH reading is considered acidic and alkaline? Give an example.

16. What is a superheater? What is the purpose of superheating the steam? Does a superheater require a safety valve? Are

there any precautions to be taken when bringing a superheater on line?

17. What causes boiler tubes and other boiler heating surfaces to overheat or fail?

18. How do you prevent corrosion or pitting? What effect has oxygen or carbon dioxide on metals?

19. How long can an operating steam boiler be left unattended?

20. If a boiler was very low on water and showed signs of overheating, should you fill it with water to cool it down?

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M❤K