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2009 Toshiba 50 Hz-250 MVA
Bell Bay, Australia
50 Hz-250 MVA Steam Turbine




with Design Points (A-F): Inlet HP steam, 104 bar: (A) 60 Kg/s (B) 170 Kg/s (C) 200 Kg/s (D) 230 Kg/s (E) 260 Kg/s (F) 260 Kg/s MP2, 22 bar: (A) 0 Kg/s (B) 7 Kg/s (C) 8 Kg/s (D) 9 Kg/s (E) 11 Kg/s (F) 10 Kg/s MP1, 10 bar: (A) 0 Kg/s (B) 17 Kg/s (C) 21 Kg/s (D) 24 Kg/s (E) 29 Kg/s (F) 25 Kg/s LP, 4.5 bar: (A) 6 Kg/s (B) 76 Kg/s (C) 91 Kg/s (D) 102 Kg/s (E) 122 Kg/s (F) 112 Kg/s Feed water preheat 0.4 bar: (A) 3 Kg/s (B) 7 Kg/s (C) 9 Kg/s (D) 11 Kg/s (E) 12 Kg/s (F) 14 Kg/s Condenser Flow: (A) 50 Kg/s (B) 62 Kg/s (C) 69 Kg/s (D) 82 Kg/s (E) 84 Kg/s (F) 98 Kg/s Design Point F1 (Swallowing Capacity): Inlet HP steam 104 bar, 270 Kg/s, MP2 22 bar, 10 Kg/s, MP1 10 bar, 25 Kg/s, LP 4.5 bar 112 Kg/s, Feed water Preheat 0.4 bar, 14 Kg/s, Condenser Flow 109 Kg/s Design Points (A-F1) and Generated Power: (A) 60 Kg/s, 54 MW (B) 170 Kg/s, 134.3 MW (C) 200 Kg/s, 160.6 MW (D) 230 Kg/s, 188 MW (E) 260 Kg/s, 206 MW (F) 260 Kg/s, 215.6 MW (F1) 270 Kg/s, 224 MW Turbine Specification: Extraction & Condensing, Inlet Pressure 104 bar, Output 215 MW, Minimum Load No Extractions, Only Bleeds, Steam Flow45kg/s, 268 Ton Shipping Weight Condenser Specification: Cooling Water: 17 C Average, 15 C Min., 25 C Max., Shipping Weight: (2) x 85 ton Heat Exchanger, (2) x 15 ton Generator: 250 MVA, Air to Water Cooled, 18 kV, 8019 Amp, 50 Hz, 3000 rpm, Heating Elements, Shipping Weight 277 ton Ordered from Toshiba Japan in 2007, Delivered 2009, Currently stored indoors and secured, Turbine & Generator completely Sealed, Silica Gel is inserted in the Turbine & Generator and regularly replaced. Equipped with Electronic Monitoring Sensors for Humidity & Temperature with criteria from Toshiba for Storage, Monitoring report Generated Monthly, Inspection of Unit every (2) Weeks, Thorough Inspections were done every (6) months until 2012, then Yearly, Inspection Protocols Available General This turbine is a single flow extraction condensing type. Steam initially enters the steam inlet flange near the end of the high-pressure section and flows through the turbine stages toward the generator end of the unit. After passing through the turbine stages, the steam is exhausted to condenser. The exhaust hood is keyed to the foundation plates at a point near its center of the exhaust hood to prevent axial motion. The turbine expands axially from this point. The front standard is free to slide axially but the standard and hood are guided to prevent transverse movement. Control Valve (CV) of Main Steam Steam, after passing through the MSV, is admitted through the CV to the high-pressure turbine. CV controls the amount of steam passing to the turbine. It is opened and closed by actuator and is controlled by Digital Electro-Hydraulic Control (D-EHC) system through turbine hydraulic system. 2.1.2 Technical Specification of Steam Turbine & Aux Type: Single Casing Single Flow impulse type condensing turbine Rated Output: 188,000 kW at Generator terminal Speed: 3,000 rpm Rotation: CCW (View