What issue arises from a malfunctioning or improperly operating DFT?

What issue arises from a malfunctioning or improperly operating DFT?

• A. Oxygen starvation
• B. Dissolved oxygen corrosion
• C. Thermal fatigue
• D. Pressure drops

Answer: (B)

A malfunctioning or improperly operating DFT, or Deaerating Feed Tank, primarily impacts the levels of dissolved oxygen in the feedwater system. The DFT's key function is to remove dissolved gases, such as oxygen and carbon dioxide, from the water before it enters the boiler. If the DFT is not working correctly, it can fail to adequately remove these gases. Dissolved oxygen is harmful because it leads to corrosion within the boiler and associated piping systems. This type of corrosion, known as oxygen corrosion, can significantly weaken metal components, leading to potential failures and costly repairs. Therefore, the presence of dissolved oxygen due to an ineffective DFT creates the risk of severe damage over time. Understanding the role of the DFT in maintaining water quality is essential for ensuring the boiler operates effectively and efficiently while preventing premature equipment failure.

A malfunctioning or improperly operating DFT, or Deaerating Feed Tank, primarily impacts the levels of dissolved oxygen in the feedwater system. The DFT's key function is to remove dissolved gases, such as oxygen and carbon dioxide, from the water before it enters the boiler. If the DFT is not working correctly, it can fail to adequately remove these gases.

Dissolved oxygen is harmful because it leads to corrosion within the boiler and associated piping systems. This type of corrosion, known as oxygen corrosion, can significantly weaken metal components, leading to potential failures and costly repairs. Therefore, the presence of dissolved oxygen due to an ineffective DFT creates the risk of severe damage over time.

Understanding the role of the DFT in maintaining water quality is essential for ensuring the boiler operates effectively and efficiently while preventing premature equipment failure.