2x660 MW Nellore Supercritical Thermal Power Project
India

Name of Project :2x660 MW Nellore Super Critical Thermal Power Project, Andhra Pradesh, India

Owner :NCC Power Projects Limited, Hyderabad, A.P.

Client :NCC Limited, Hyderabad, A.P.

Capacity :2x660 MW

L&T-S&L’s scope :Complete Basic and Detail engineering services for BOP -Mechanical, Electrical & CNI, BTG - Civil (except for TG foundation), Design of 275 m high twin flue RCC Chimney and review engineering of BOP Civil

Configuration :2x660 MW Supercritical Boiler, Turbine and Generator supplied by Harbin, China

Key Technical Features :

Coal Handling Plant

• 2x1800 TPH Belt Conveying System
• 4x1800 TPH Crusher
• 4x1800 TPH Vibrating Grizzly Feeder
• Stacker Cum Reclaimer: Stacking Capacity 3600TPH, Reclaiming Capacity 1800TPH

Ash Handling Plant

• 2x65 TPH scrapper chain conveyor arrangement for each unit Bottom Ash Handling System
• 247 TPH Fly Ash single stage pressure Conveying System for each unit
• 3x206 TPH HCSD system for bottom ash and fly ash.
• 2 Nos. of 2000T RCC Fly Ash Silos, 1 No 900T bottom ash silo

Water Treatment Plant

• 2x1200m3/hr pre-treatment plant
• 4x138m3/hr RO-I units
• 2x45m3/hr RO-II units
• 2x90m3/hr Mixed Bed unit
• 4x60kg/hr Sea water Electrolyzer

Major BOP Electrical Equipment

• 3x 1 phase, 260 MVA Generator Transformer
• Two winding UT and Three winding ST
• 160 kA,24000 A GCB and 24000 A Main IPBD 11 and 3.3 kV Switchgear,40 kA for 3 sec

Other Major Auxiliaries

• 5 Nos. Screw Compressors (35Nm3/min) with HOC type ADP
• 2 Nos. NDCT each of 80000 m3/hr capacity
• 4 Nos. CW pumps each of 40000 m3/hr capacity
• 275 meters height twin flue RCC Chimney

Fuel :Blended coal (Indian and Imported coal in ratio of 70:30)

Year of commissioning :2016