What happens if the water level in a steam boiler drops too low?

When the water level in a steam boiler drops too low, the primary concern is the risk of overheating and potential damage to the boiler. This occurs because the water serves as a coolant for the heating elements or fire tubes. If the water level falls below a safe threshold, there is insufficient water to absorb the heat generated by the combustion process.

As a result, the metal parts of the boiler can become excessively hot, which may lead to warping, failure of joints, or even catastrophic failure. The risk includes damage to boiler components, such as the pressure vessel, and could ultimately compromise the safety of the entire system.

Understanding the importance of maintaining the proper water level is crucial for safe boiler operation, as it prevents damage and ensures that the boiler functions effectively under operational pressures and temperatures.