Hide Notes 

Slide 1: Wear Mechanisms Component in Thermal Power Plant SHIVAJI CHOUDHURY
Slide 2: Primary Wear Mechanism in Thermal Power Station     1.Creep 2.Fatigue 3.Erosion 4.Corrosion
Slide 3: 1.CREEP     AFFECTED COMPONENTS Super heater tubes Reheater tubes Headers     PROBABLE CAUSES High steam temperature and/or pressure Poor initial design / turbulent velocity Material deficiency
Slide 4: 2.FATIGUE      AFFECTED COMPONENTS Turbine blades and shafts Boiler headers, drum and tubes Pumps and fan components Generator winding supports     PROBABLE CAUSES Thermally induced stress Periodic steam forces Electrical forces
Slide 5: 4.EROSION          AFFECTED COMPONENTS Turbine blades and nozzles Boiler tubes Fan blades Pumps PROBABLE CAUSES Solid particle erosion Fly ash erosion cavitation
Slide 6: 3.CORROSION         AFFECTED COMPONENTS Boiler tubes Turbine blades Discs Precipitators Scrubbers Stack Air preheaters     PROBABLE CAUSE WATER AND STEAM IMPURIES ACID DEPOSITION COAL ASH CONSTITUENTS
Slide 8: THANK YOU