Arkansas Boiler Operator Practice Exam

What is the function of a gauge glass in a boiler?

1. To measure the steam temperature

2. To visually indicate the water level

3. To regulate fuel input

4. To control the pressure of steam

The correct answer is: To visually indicate the water level

The function of a gauge glass in a boiler is to visually indicate the water level. This device is essential for monitoring the water level within the boiler, ensuring that it remains at a safe and operational range. A well-functioning gauge glass allows operators to quickly assess whether there is enough water in the boiler, which is critical for efficient operation and safety. If the water level is too low, it can lead to overheating and potentially severe damage, while too high can cause flooding and inefficiency. The visibility provided by the gauge glass is crucial for operators to make timely and informed decisions regarding water levels. In contrast, aspects related to steam temperature, fuel input regulation, and steam pressure control are managed by different instruments or valves within the boiler system. The gauge glass specifically focuses on displaying the water level, hence its vital role in boiler operation and safety management.