Placed along super heated steam lines, condensate drip legs (or drip traps) collect particles of moisture and drain off the accumulated condensate. Employed as a preventative measure against turbine water induction, drip legs can be placed along main steam lines, hot and cold reheats and steam extraction lines. When a level switch senses the upper level in a drip leg it opens a dump valve to remove the accumulated condensate.
If particles of moisture escape condensate collection systems and enter the turbines, significant damage can result. Level controls used in condensate drip legs must contend with the high temperatures and pressures associated with these devices.
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