Almost all, small-scale flash-steam power-plants, feature such a short- return-path with the condencer-scheme employ'd, that most such systems, 'do-not' feature a blow-down circuit, within the boiler circuit/cycle.

 In fact, most such small scale systems, are filled with purified-distilled water to begin with. So, there are no dissolved solids to 'blowdown' if you will.

 In general, 'impinging' of the blading, is minimized thru working fluids that have no dissolved solids when condenced, or in the 'semi-state', between vapor and liquid.