Standard Dresser-Rand RLA Turbines are single-stage, impulse-type turbines with a two-row, velocity-compounded rotor and one row of stationary reversing blades between the rotating blades. The rotor is enclosed between the turbine cover, which contains the steam inlet connection, and the turbine casing, which contains the steam exhaust connection. The rotor is supported and positioned axially between two ball bearings.