Defines construction standards and testing and performance requirements for single stage and multi stage steam turbines, reduction gears, air cooled electric generators, switchgear, and auxiliary systems. Coverage includes shaftseals, rotor assembly, controlling device, nameplate data, generator constants, maximum speed rise, voltage control, generation system control, overspeed sensing device, sound pressure levels, sound attenuation, supervision of installation, coupling alignment, internal water washing, and receipt and storage of equipment.