What is purging in the context of boiler operation?

Purging in the context of boiler operation refers specifically to the removal of combustibles from the firebox. This process is crucial to ensure safety and efficiency before the combustion process begins. By ventilating the firebox, any unburned fuel or combustible gases that may have residual from previous operations are cleared away. This reduces the risk of explosion and ensures that only clean air and the appropriate fuel mixture are present when ignition occurs.

This procedure is generally executed before starting the boiler to maintain optimal operating conditions and to allow for proper combustion. Ensuring the firebox is free from combustibles is a vital safety measure that avoids the buildup of hazardous gases and enhances the overall performance of the boiler system.