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26 True/False questions

  1. How is foaming caused?Foaming is caused by the formation of steam bubbles trapped below a film on the boiler water surface.

          

  2. What does a surge tank collect?A surge tank collects condensate before sending it to the deaerator.

          

  3. How is a bottom blowdown performed?Blowdown is used as a part of a boiler water treatment program to remove some of the concentrated water and replace it with feedwater to lower the total concentration of dissolved solids.

          

  4. Water in the boiler must be...Water used in the boiler must be treated for safety and efficiency.

          

  5. What does a chemical feed system do?A chemical feed system introduces feedwater treatment chemicals into a boiler at a predetermined and controlled rate.

          

  6. What is caustic embrittlement?Caustic embrittlement is the accumulation of high alkaline elements, which cause boiler metal corrosion at stress zones in the boiler.

          

  7. What is alkalinity?Scale is the accumulation of minerals such as calcium and magnesium on boiler heating surfaces.

          

  8. What is Feedwater?Feedwater is water that is treated for use in the boiler.

          

  9. When can priming and carryover occur?Corrosion is rusting or pitting that weakens boiler metal by the thinning (removal) of the metal.

          

  10. What does a deaerator do?A deaerator heats feedwater to the temperature of saturated steam at the pressure within a pressure vessel.

          

  11. What can cause boiler parts to overheat? and why?Minerals present in water can cause a buildup of deposits that restrict water flow and cause overheating of boiler parts.

          

  12. What can an inadequate/improper boiler water treatment do?Internal boiler water treatment is treating water after it has entered the boiler.

          

  13. What can oxygen in feedwater lead to? and what can be implemented/changed for maximum effectiveness and economy?Oxygen in feedwater can lead to corrosion and pitting of the boiler metal. The correct amount of water treatment chemicals must be used for maximum effectiveness and economy.

          

  14. What is external boiler water treatment?Internal boiler water treatment is treating water after it has entered the boiler.

          

  15. What is Scale?Scale is the accumulation of minerals such as calcium and magnesium on boiler heating surfaces.

          

  16. What should boiler water ph typically be?External boiler water treatment is treating water before it enters the boiler.

          

  17. What can cause high surface tension? and what does it result in?Boiler water is the water in the boiler used to produce steam.

          

  18. What is Corrosion?Alkalinity is the property of a solution as determined by measuring its pH level.

          

  19. What is boiler water? and what is it's use?Boiler water is the water in the boiler used to produce steam.

          

  20. What does a bypass feeder do?A water softener removes calcium and magnesium to reduce water hardness.

          

  21. What is internal boiler water treatment?Internal boiler water treatment is treating water after it has entered the boiler.

          

  22. What does an electronic hardness tester do?An electronic hardness tester is commonly used to determine water hardness.

          

  23. How are TDS measured?The total dissolved solids (TDS) present in boiler water are measured with a conductivity meter.

          

  24. What must the boiler operator record?The boiler operator must record any conditions that may indicate water treatment-related problems.

          

  25. How is blowdown used? and why?Foaming is caused by the formation of steam bubbles trapped below a film on the boiler water surface.

          

  26. What does a water softener do?A bypass feeder introduces water treatment chemicals in a loop on the discharge side of the feedwater pump.