Podcast
Questions and Answers
What are the most often identified impurities or conditions that are important water quality measures in a boiler system?
What are the most often identified impurities or conditions that are important water quality measures in a boiler system?
- Oxygen, Nitrogen, Carbon Dioxide, Sulfur Dioxide
- Iron, Aluminum, Calcium, Chlorine
- Suspended Solids, Dissolved Solids, Dissolved Gases, pH (correct)
- Copper, Lead, Zinc, Chromium
What typical problem results from sludge being carried along by flowing water in a boiler system?
What typical problem results from sludge being carried along by flowing water in a boiler system?
- Formation of scale from salts
- Deposition on the boiler heat transfer surfaces (correct)
- Reduced efficiency
- Corrosion in the hottest areas of the boiler
What is the result of salts that are insoluble under the conditions inside the boiler?
What is the result of salts that are insoluble under the conditions inside the boiler?
- Carryover
- Reduced efficiency
- Formation of scale (correct)
- Corrosion
What is the potential effect of carryover from impurities downstream from the boiler in a boiler system?
What is the potential effect of carryover from impurities downstream from the boiler in a boiler system?
What is the potential consequence of any impurity in a boiler system?
What is the potential consequence of any impurity in a boiler system?
What is the general relationship between the operating pressure of a boiler and the required purity of the feedwater in a boiler system?
What is the general relationship between the operating pressure of a boiler and the required purity of the feedwater in a boiler system?
What is the primary concern regarding the presence of oxygen and carbon dioxide in water for Power Engineers?
What is the primary concern regarding the presence of oxygen and carbon dioxide in water for Power Engineers?
How does the solubility of gases in water change with an increase in temperature?
How does the solubility of gases in water change with an increase in temperature?
What is the purpose of using deaerators in controlling dissolved oxygen in boiler water?
What is the purpose of using deaerators in controlling dissolved oxygen in boiler water?
How does carbon dioxide affect metal surfaces in condensate return lines?
How does carbon dioxide affect metal surfaces in condensate return lines?
What does a high pH value in boiler water indicate?
What does a high pH value in boiler water indicate?
What is the main reason for adding sodium hydroxide (caustic soda) to boiler water?
What is the main reason for adding sodium hydroxide (caustic soda) to boiler water?
What effect does high pH boiler water have on ferrous boiler metal?
What effect does high pH boiler water have on ferrous boiler metal?
What is the primary concern related to a pH lower than 8.5 in boiler water?
What is the primary concern related to a pH lower than 8.5 in boiler water?
How does acidity affect the water from lakes and rivers?
How does acidity affect the water from lakes and rivers?
What is the primary purpose of using lime exchangers softeners and anion exchangers for dissolved solids removal?
What is the primary purpose of using lime exchangers softeners and anion exchangers for dissolved solids removal?
What happens to dissolved gases like nitrogen and ammonia as the temperature increases?
What happens to dissolved gases like nitrogen and ammonia as the temperature increases?
What is one of the major reasons for the treatment of impurities found in water supplies by external systems?
What is one of the major reasons for the treatment of impurities found in water supplies by external systems?
What is the main purpose of external treatment of boiler water?
What is the main purpose of external treatment of boiler water?
What are suspended solids in boiler water mainly composed of?
What are suspended solids in boiler water mainly composed of?
How are Total Suspended Solids (TSS) usually determined?
How are Total Suspended Solids (TSS) usually determined?
What is the most common method of reducing the levels of suspended solids in boiler water?
What is the most common method of reducing the levels of suspended solids in boiler water?
What is the main problem caused by dissolved solids in boiler water?
What is the main problem caused by dissolved solids in boiler water?
Which technology can be used to remove silica from boiler water?
Which technology can be used to remove silica from boiler water?
What is the main problem caused by scale buildup in a boiler?
What is the main problem caused by scale buildup in a boiler?
How can sludge and scale buildup lead to boiler overheating?
How can sludge and scale buildup lead to boiler overheating?
What is the primary cause of foaming in a boiler?
What is the primary cause of foaming in a boiler?
How can foaming impact the produced steam?
How can foaming impact the produced steam?
What technology can be used to remove colloidal silica from boiler water?
What technology can be used to remove colloidal silica from boiler water?
What is the main purpose of internal treatment within a boiler?
What is the main purpose of internal treatment within a boiler?
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