Steam cooling of combustion turbine parts provides significant advantages o
ver air cooling. Steam potentially carries dissolved salts that can deposit
on the cooled parts and cause corrosion. By maintaining the salt concentra
tion below its solubility limit in the steam, deposition of salts may be av
oided. A literature survey reveals that only sodium chloride and silica hav
e adequate data for reasonable extrapolation to the strain cooling conditio
ns. Estimates of steam solubility of sodium sulfate and sodium phosphate us
ed liquid-vapor distribution coefficients fur a solubility at saturation an
d sodium chloride as a model compound to extrapolate the solubility to othe
r conditions. Copper oxide data were also insufficient to predict steam sol
ubilities with confidence. The large potential errors in the sodium phospha
te and sodium sulfate solubility estimates may add considerable cost to the
water treatment system. Accurate experimental values for sodium sulfate an
d sodium phosphate solubilities in steam are needed.