If the white smoke condition cannot be corrected within one minute, what must be done?

In situations involving white smoke from a boiler, it typically indicates that there is incomplete combustion, often due to an excess of fuel or insufficient heat. If this condition persists beyond one minute, it becomes critical to secure the boiler to prevent potential hazards such as damage to the system or explosion risks. Securing the boiler involves shutting down operation safely to mitigate any further complications resulting from the problematic combustion process.

This approach ensures that any underlying issues contributing to the white smoke can be diagnosed and addressed without risking further operational failures or accidents. Maintaining safety is a priority in such scenarios, making securing the boiler the appropriate course of action.

The other options, while relevant in different contexts, do not address the immediate safety concerns associated with prolonged white smoke conditions. Increasing pressure could exacerbate the problem, restarting the system might not resolve the issue if it’s rooted in mechanical failure or combustion inefficiency, and merely checking fuel levels may not provide the comprehensive resolution needed under these circumstances.