Abstract:In the circumstances that thermal power plant has been running great under highparameter, this paper chose a certain power plant to analysis the reason caused low pressure rotor corrosion in 300MW unit, including moisture control indicators, vacuum degree of the unit, initial condensing zone, shutdown boiler protection, etc. This paper also brings about precaution to above situation to make sure safe operation of the unit.

Keywords:turbine blade, oxygen corrosion, initial condensing zone, chloridion, corrosive pitting, hydrogen conductivity