Boilers are the core equipment in power plants. Their interiors usually endure high temperatures and pressures. After long - term operation, problems such as cracks, corrosion, or scaling are prone to occur. 3D measuring industrial endoscopes can penetrate deep into the boiler to conduct a comprehensive inspection of components like water - cooled walls, superheaters, and economizers, promptly identifying potential hazards and thus preventing shutdown accidents caused by equipment damage.