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To 'commission' a boiler refers to the process of testing and verifying systems after installation. This is a critical phase in ensuring that the boiler operates safely and efficiently, following its installation. During commissioning, various checks, tests, and adjustments are conducted to confirm that all components are functioning correctly according to the specifications, and that the system is ready for operational duties. This includes assessing the boiler's safety features, its efficiency, and the integrity of all associated systems, such as water feed and fuel supply.

This process plays a vital role in guaranteeing that the boiler meets industry standards and regulations. It ensures that all systems are properly calibrated and functioning together as intended. Proper commissioning helps prevent operational issues, prolongs the life of the equipment, and enhances the safety of the overall facility.

In contrast, permanently shutting down a boiler, cleaning and maintaining an old boiler, or adjusting boiler pressure represent entirely different procedures that do not encapsulate the essence of commissioning, which focuses specifically on the readiness of a newly installed system for service.