1. 660MW vs 500MW

2. DESCRIPTIONUNIT 660 MW AT BMCR 5000 MW AT BMCR S/H STEAM FLOWT/HR2225 1625 SH STEAM PRKG/CM 2 256 178 SH STEAM TEMP 0C0C540 RH STEAM FLOWT/HR1742 1397.4 RH STEAM TEMP INLET 0C0C299 340 RH STEAM TEMP OUTLET 0C0C568 540 RH STEAM PRESS OUTLETKG/CM 2 46.61 41.9 FEED WATER TEMP 0C0C289.64 255 PR. DROP IN SH SYSTEMKG/CM 2 49.2 17 PR. DROP IN RH SYSTEMKG/CM 2 1.69 2.1 PARAMETERS

3. 1. NO DRUM 2. ECONOMISER BANKS & O/L HEADER 3. TWO STAGES OF REHEATER 4. FINAL SUPER HEATER (COUNTER FLOW) 5. MAIN STEAM & HRH O/L HEADERS 6. SPIRAL WALL 7. VERTICAL BUCK STAYS 8. ELECTRO HYDRAULIC SAFETY VALVES 9. BA HOPPERS 6 NOS. 10. ESP PASSES 6 NOS. 11. AXIAL ID FANS 12. LDO & HFO SYSTEMS 13. BOILER FILLING ONLY THROUGH ECO FEED LINE 14. OXYGENATED WATER TREATMENT PHYSICAL

4. DESCRIPTION500 MW660 MW ECONOMISERSA210Gr A1SA210Gr C WATER WALLSA210Gr CSA213T22 DRUM/SEPERATORSA299SA302C LTSHSA213T11SA213T11,23,91 DIVISIONAL SHSA213T11,22,91 FINAL SHSA213 T22,91 and TP347H SA213T11,23,91, 92 LTRHSA213T11,22SA210GrC, SA213T12, 23 FINAL RHSA213 T22,91 and TP347H SA213T23,91, Super304H SH OUTLET HEADERSA335P22SA335P91 RH OUTLET HEADERSA335P22SA335P23, P91 MATERIALS

5. SECTIONMATERIAL Economizer TubesSA210C Evaporator Tubes SpiralSA213T22 VerticalSA213T22 Superheater Tubes PrimarySA213T23, T91 SecondarySA213T12, T23, T91 FinalSA213T23, T91, T92 Reheater Tubes PrimarySA210C, T12, T23 FinalSA213T23, T91, SUPER304 H SeparatorsSA302C HeadersSH outletSA335P91 RH outletSA335P91 MaterialOxidation Criteria ℃ SA-210C454 SA-213T2482 SA-213T12552 SA-213T22593 SA-213T23593 SA-213T91649 SA-T92649 SUPER304H760 PRESSURE PARTS MATERIALS :