37 Maintenance, repair, replacement, and renovation of components, parts, or systems in steam and gas turbine generators; Maintenance, repair, replacement, and renovation of components, parts or systems in rotating equipment, including pumps, generators, compressors, steam turbines, power turbines, gearboxes, electric motors, industrial engines, reciprocating engines, aero/aeroderivative engines, compressors, and hydro turbines; Maintenance, repair, replacement, and renovation of ancillary equipment used in power generation in the nature of electro-mechanical skids, hydraulic skids, gas turbine auxiliary skids, heat recovery steam generators, steam engine boilers for power generation, electric generators, transformers, hydraulic controls for machines, hydraulic torque converters, hydraulic power units, hydraulic pumps, centrifugal pumps, gears, and electric control panels; Installation of capital spare parts for gas and steam turbines; Installation of control systems for rotating equipment; Consulting in the fields of repair and maintenance for power generation equipment and other mechanical drive rotating equipment, including ancillary systems critical to their function, to assist oil and gas facility owners, operators and maintenance providers in improving production performance through use of critical rotating equipment; Maintenance of power generation equipment and maintenance of power generation buildings; Technical support services, namely, technical advice relating to the installation of gas and steam turbines and power generation equipment; Building construction, building maintenance, and construction project management services for businesses in the power plant, oil and gas, industrial, power, and renewable energy industries; Plant construction, maintenance and construction project management services for businesses in the energy production and transmission sectors; Construction services, namely, construction of power plants and portions thereof to assist power plant owners and operators in providing gas turbine, thermal power and/or coal driven solutions; all of the foregoing for the power plant, oil and gas, industrial, power and renewable energy industries