Method and apparatus for commissioning power plants

Apparatus for the steam flushing of steam generation equipment and piping, in a multiple stage process to wash particulate and non-particulate contamination from the exhaust steam comprising:

• (a) means for introducing condensate into the exhaust steam flow one or more condensate injection points, in an amount sufficient to generate a mixed phase flow of steam and liquid condensate droplets,
• (b) contacting section means constructed and arranged to allow the liquid droplets in the mixed phase flow to contact both particulate and non-particulate contamination entrained in the exhaust steam, and
• (c) means for separating liquid droplets and entrained particulate contamination from the exhaust steam in a separation section.