If a boiler is shut down, what procedure is crucial before restarting?

The crucial procedure before restarting a boiler that has been shut down is to verify the water level. This step is essential because the water level in the boiler must be maintained within specific limits to ensure safe and efficient operation. If the water level is too low, it can lead to overheating and potentially cause damage to the boiler components or even a catastrophic failure, such as a boiler explosion.

Before restarting, checking the water level ensures that there is sufficient water to absorb the heat generated during the firing process, protect the boiler's materials from extreme temperatures, and facilitate proper steam generation. It is a fundamental safety measure that operators must take to safeguard both the equipment and personnel.

While inspecting the control panel, checking the fuel supply, or sealing the combustion chamber are also important maintenance and operational procedures, they do not take precedence over ensuring the water level is adequate for safe boiler operation.