Minnesota Boiler License Practice Exam

What is a critical function of steam traps in a boiler system?

1. To regulate steam pressure

2. To remove air and condensate

3. To increase water temperature

4. To prevent boiler corrosion

The correct answer is: To remove air and condensate

Steam traps play a crucial role in the efficient operation of a boiler system by removing air and condensate from the steam system. This function is essential because the presence of air in steam lines can lead to reduced heat transfer efficiency, as air acts as an insulator and occupies space that steam could otherwise occupy. By venting air and allowing condensate—liquid water formed when steam loses heat—to escape, steam traps help ensure that only dry steam is delivered to equipment that requires it. Additionally, removing condensate is important because excessive water can lead to water hammer, which can damage pipes and fittings. Proper functioning of steam traps ensures that the steam system operates at optimal efficiency, allowing for effective heating and minimizing energy losses. This ultimately contributes to the longevity and reliability of the boiler system. While regulating steam pressure, increasing water temperature, and preventing boiler corrosion are important aspects of boiler operation, these functions are not the primary role of steam traps. Each of these functions is typically managed by other components and systems within the boiler infrastructure.