What should an operator do when the boiler low water alarm is ringing?

In the event that the boiler low water alarm is ringing, securing the fires and feedwater is the most appropriate action to ensure safety and prevent further complications. This step is critical because a low water condition can lead to dangerous situations such as overheating, boiler damage, or even an explosion if the boiler continues to operate without sufficient water.

By securing the fires, the operator effectively reduces the heat input to the boiler, which helps prevent any further rise in temperature in the absence of adequate water. Additionally, stopping the feedwater supply is necessary to prevent any potential complications that might arise from trying to add water to a boiler that is already in a compromised state.

Taking this immediate action allows the operator to protect the integrity of the boiler system and ensure the safety of the personnel and surrounding area. After taking these initial steps, an operator can then follow appropriate safety protocols, which includes notifying maintenance and conducting safety checks to address the cause of the low water condition and prevent its recurrence.