What action should you take if your boiler is foaming to ascertain the water level?

In the scenario of a foaming boiler, turning off the fire or closing the steam valve is the appropriate action to take to ascertain the water level. Foaming in a boiler can lead to inaccurate water level readings, potentially causing serious safety hazards such as overheating or water carryover into the steam system. When foaming occurs, it’s crucial to reduce the heat input to mitigate the risk of further complications. By turning off the fire or closing the steam valve, you allow the conditions in the boiler to stabilize, preventing additional steam production and enabling a clearer assessment of the actual water level. This action prioritizes safety while addressing the immediate issue of foaming, allowing for a more precise evaluation or corrective action to follow.