Arkansas Boiler Operator Practice Exam

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

1. Increased safety liability

2. Clogged fuel lines

3. Corrosion and scale build-up

4. Improved energy efficiency

The correct answer is: Corrosion and scale build-up

Neglecting water treatment in a boiler can lead to corrosion and scale build-up, which are serious issues that compromise the boiler's efficiency and safety. Water used in boilers often contains impurities such as minerals, dissolved gases, and other contaminants. If untreated, these impurities can lead to the formation of scale deposits on heat exchange surfaces, reducing heat transfer efficiency and making the system work harder than necessary. Corrosion occurs when the metal components of the boiler react with impurities in the water, leading to deterioration of those components. This could potentially cause leaks or catastrophic failures, such as boiler explosions. Regular water treatment schedules and chemical treatments help to mitigate these risks by controlling pH levels and preventing the formation of both scale and corrosion, which in turn ensures that the boiler operates within a safe and efficient range. While safety liability, clogged fuel lines, and energy efficiency are important considerations in boiler operation, they are not direct consequences of untreated water in the same way that corrosion and scale build-up are. Neglecting water treatment primarily results in these destructive conditions that can lead to severe operational issues.