Question: Epcor has contracted General Electric Energy to build and install a combined gas-turbine-steam-turbine power plant system. A senior engineer would like to reuse an existing recovery waste heat boiler as the heat exchanger interface between the two turbine subsystems. Due to age, the efficiency of this boiler is 45%, and will produce steam with a quality of 0.77 for the steam turbine. Two junior design engineers object, stating that this existing recovery waste heat boiler could significantly undermine the performance of the steam-turbine subsystem. Are their concerns justified?