When shutting down a boiler, what should be secured?

When shutting down a boiler, securing the flame is crucial for safety and operational integrity. This involves extinguishing the combustion process safely, which prevents any potential hazards associated with burning fuel in the boiler system during the shutdown procedure.

By securing the flame first, you ensure that there is no ongoing combustion activity, which is vital for preventing explosions or other dangerous situations that could arise from residual heat or unburned fuel. Once the flame is out, other systems can be safely managed, such as addressing the fuel supply, which can be turned off after confirming that the flame is no longer present.

While maintaining the proper water level is important in the operation of a boiler, it is not the first action taken during a shutdown process. The air intake can be addressed subsequently, as it is closely linked to the removal of combustion processes. Therefore, securing the flame is paramount in the initial steps of safely shutting down a boiler.