During which stage does a boiler require the most careful monitoring for pressure changes?

In the startup phase of a boiler, careful monitoring for pressure changes is critical due to the transition from an inactive state to operational readiness. During this phase, various parameters such as temperature, pressure, and water levels can fluctuate significantly as the boiler heats up and builds pressure.

The nature of the startup process involves introducing heat to the system, which causes the water within the boiler to begin converting to steam. This can lead to rapid changes in pressure, and any significant deviations from expected values may indicate potential safety hazards or inefficiencies in operation.

Monitoring during this stage ensures that the boiler operates within safe limits and allows for early detection of any abnormalities that could lead to failure or unsafe conditions. Keeping a close eye on pressure changes helps to ensure that the system is stabilizing correctly and that it will function effectively during subsequent operational phases.