Which operational issue can arise from poor draft control in a boiler?

Poor draft control in a boiler can lead to incomplete combustion, which is a significant operational issue. Draft control is essential for maintaining the right flow of air and flue gases in the combustion process. When draft is insufficient or poorly regulated, the boiler may not receive enough oxygen for optimal fuel combustion. This results in the fuel burning in a less efficient manner, leaving unburned carbon or other fuel residues in the combustion chamber.

Incomplete combustion can lead to various problems, such as increased emissions of carbon monoxide and other pollutants, reduced thermal efficiency, and potential buildup of soot within the boiler system. Additionally, it can cause operational inefficiencies, as the boiler may not produce the expected heat output, leading to higher fuel consumption and operational costs. Therefore, managing draft properly is crucial for ensuring complete combustion and maintaining overall boiler performance.