Valve leakage, hydraulic system leakage detection;Pump cavitation detection, air compressor internal leakage detection;B trap fault detection;Compressed air leakage detection, boiler, heat exchanger and condenser leakage detection;B boiler fault safety door search;Wind noise and water leakage detection;Local discharge inspection of electrical equipment: GIS switch driving mechanism fault detection, insulator pollution flashover and internal crack detection cable joint local discharge inspection, GIS/GCB and switch cabinet, power supply cabinet, communication cabinet internal local discharge inspection, transformer, busbar bushing, CT/PT, capacitor and reactor local discharge detection, SF6 gas leakage detection.