How often must a 10% boiler surface blowdown be conducted after light-off following EDTA cleaning?

How often must a 10% boiler surface blowdown be conducted after light-off following EDTA cleaning?

• A. 12 hours
• B. 12 hours after light-off
• C. 24 hours
• D. 36 hours

Answer: (C)

The correct answer is that a 10% boiler surface blowdown must be conducted every 24 hours following light-off after EDTA cleaning. This procedure is important to maintain the integrity of the boiler system and to ensure that any residual cleaning agents, such as EDTA, are adequately removed from the system. EDTA (Ethylenediaminetetraacetic acid) is commonly used to remove scale and deposits within the boiler. After the cleaning process, there can be remnants of these agents that could cause chemical imbalances or corrosion if not properly managed. Conducting a blowdown helps to flush out these substances from the boiler system. The 24-hour requirement helps provide a balance between maintenance needs and operational efficiency, ensuring the boiler remains in optimal working condition without requiring excessively frequent blowdowns that could affect performance. Other mentioned intervals, like 12 hours or 36 hours, do not align with the standard operational guidelines for blowdown frequency following cleaning and could lead to inadequate removal of contaminants or unnecessary operational downtime, respectively. Thus, the 24-hour interval is practical and effective for maintaining the health of the boiler system.

The correct answer is that a 10% boiler surface blowdown must be conducted every 24 hours following light-off after EDTA cleaning. This procedure is important to maintain the integrity of the boiler system and to ensure that any residual cleaning agents, such as EDTA, are adequately removed from the system.

EDTA (Ethylenediaminetetraacetic acid) is commonly used to remove scale and deposits within the boiler. After the cleaning process, there can be remnants of these agents that could cause chemical imbalances or corrosion if not properly managed. Conducting a blowdown helps to flush out these substances from the boiler system.

The 24-hour requirement helps provide a balance between maintenance needs and operational efficiency, ensuring the boiler remains in optimal working condition without requiring excessively frequent blowdowns that could affect performance.

Other mentioned intervals, like 12 hours or 36 hours, do not align with the standard operational guidelines for blowdown frequency following cleaning and could lead to inadequate removal of contaminants or unnecessary operational downtime, respectively. Thus, the 24-hour interval is practical and effective for maintaining the health of the boiler system.