When taking a steam boiler out of service for an extended period, what should be done to the boiler drums?

When taking a steam boiler out of service for an extended period, what should be done to the boiler drums?

• A. Drained completely after cooling to 180F
• B. Left filled with water
• C. Partially drained
• D. Filled with anti-corrosion fluid

Answer: (A)

When taking a steam boiler out of service for an extended period, draining the boiler drums completely after cooling to a safe temperature, such as 180°F, is crucial to prevent potential damage and corrosion. This process eliminates residual water, which can become stagnant and promote corrosion or scale buildup over time. Leaving any water in the boiler could lead to more severe issues, such as pitting or rusting of the steel, especially if the water contains impurities. Completely draining the boiler also allows for a thorough inspection and cleaning of the internal surfaces, ensuring that all deposits are removed before the boiler enters a dormant state. By doing this, you maintain the integrity of the boiler and help extend its service life. Using a controlled temperature like 180°F ensures that the boiler cooldown process is gradual, avoiding thermal shock that could occur with rapid temperature changes.

When taking a steam boiler out of service for an extended period, draining the boiler drums completely after cooling to a safe temperature, such as 180°F, is crucial to prevent potential damage and corrosion. This process eliminates residual water, which can become stagnant and promote corrosion or scale buildup over time. Leaving any water in the boiler could lead to more severe issues, such as pitting or rusting of the steel, especially if the water contains impurities.

Completely draining the boiler also allows for a thorough inspection and cleaning of the internal surfaces, ensuring that all deposits are removed before the boiler enters a dormant state. By doing this, you maintain the integrity of the boiler and help extend its service life. Using a controlled temperature like 180°F ensures that the boiler cooldown process is gradual, avoiding thermal shock that could occur with rapid temperature changes.