5. Installation example 2-2-1 3P RS multiple shaft This section presents an example of a combined-cycle power plant. 5.1 Description of a power plant The plant shown in figure 9 comprises : two combustion turbines with a unit electrical output of around 177 MW ; two vertical boilers with assisted circulation ; a steam turbine with an electrical capacity of around 170 MW ; three pressure levels (for the water-steam cycle) ; resuperheating between high- and medium-pressure turbines; an afterburner (gas combustion in the boiler: additional thermal output possible, 27 MW).