What is the primary function of a safety interlock system in a boiler?

The primary function of a safety interlock system in a boiler is to prevent the boiler from operating unless specified safety conditions are met. This type of system is critical for ensuring safe operations and protecting both the equipment and personnel. It typically includes various sensors and controls that monitor essential parameters, such as pressure, temperature, and water levels. If any of these parameters fall outside safe operating ranges, the interlock system will disable the boiler to prevent dangerous conditions, such as overheating or overpressure, which could lead to catastrophic failures or accidents.

This safety measure is vital, as it helps to enforce protocols that ensure the boiler operates within the designed safety limits. By doing so, it protects the boiler system from damage and ensures compliance with safety regulations, enhancing overall operational safety. The other options, like increasing efficiency, regulating fuel usage, or maintaining water levels, relate to the operational aspects of the boiler, but they do not encompass the crucial safety role that the interlock system provides.