What is a common consequence of inadequate water treatment in a boiler?

Inadequate water treatment in a boiler can lead to scale buildup, which is a common consequence. When the water used in the boiler contains impurities and is not properly treated, minerals such as calcium and magnesium can precipitate out and form deposits on the heat transfer surfaces of the boiler. This scale acts as an insulating layer, reducing the efficiency of heat transfer and causing the boiler to work harder to produce steam.

As the scale thickens, it can lead to overheating of the metal surfaces, potential damage to the boiler, and increased fuel consumption due to the reduced efficiency of heat exchange. This situation creates not only operational challenges but also safety hazards, as the strain on the boiler components can lead to failures if not managed properly.

On the other hand, increased fuel efficiency and consistent steam generation are outcomes associated with proper water treatment. Improved water clarity may also be a sign of adequate treatment, as treating the water appropriately helps to remove suspended solids and contaminants. However, these options do not represent the consequences of inadequate treatment, making scale buildup the correct answer.