What kinds of special operators are needed for electromechanical installation?

The special operators generally needed for electromechanical installation projects often include: electricians (high and low voltage electricians, including testers for power generation, transmission, substation, distribution, installation, operation and maintenance (maintenance) of electricians and electrical equipment); Welder (if welding of pressure vessels is involved, corresponding welder certificate is required); Drivers, signalmen and contractors of lifting equipment; Some operations will involve supports, so scaffolders and aerial workers are needed, including erection, demolition and maintenance workers over 2 meters and surface cleaning workers of high-rise buildings (structures); Material hoist operator; Refrigeration operations, including refrigeration equipment installers, operators and maintenance workers; Pressure vessel operators, including pressure vessel canning workers, inspection workers, transport escorts and large air compressor operators.