Which of the following can be used to clean boiler tubes besides mechanical means?

Acid cleaning is a well-established method for removing deposits and scale from boiler tubes. This technique is particularly effective at dissolving mineral deposits that can accumulate over time, which mechanical cleaning methods may not fully address. When performed by a qualified person, acid cleaning ensures that the correct type and concentration of acid are used, minimizing the risk of damaging the boiler tubes or affecting the overall integrity of the system.

This method is often necessary when there are stubborn deposits that other cleaning methods cannot effectively remove, making it a preferred choice in situations requiring thorough cleaning. The process typically involves circulating an appropriate acid solution through the tubes, which can help restore efficiency and prolong the life of the boiler.

In contrast, options such as adding more water do not contribute to cleaning and can potentially exacerbate the issue by diluting contaminants, while steam cleaning might not provide the necessary intensity for scale removal. Using detergents and soaps may help with oily contaminants, but they are not suitable for addressing mineral scale effectively.