NCTPS II MI Circle BM Division 600 MW Air preheater 1B Annual overhaul works of Replacement of the existing

Renewal of Hot End and Hot intermediate heating element baskets - 850mm Height : This work involves drawl of new Hot End and Hot intermediate heating element baskets (850 mm height) from NCTPS II store by using crane and loading into the lorry, transporting and unloading the new Hot End / Hot intermediate heating element baskets at '0' mtr level in between PA & FD fans area and these new Hot End and Hot intermediate heating element baskets lifting one by one from '0' mtr level to 26 mtr elevation by using electric motor winch and these lifted new baskets are kept in APH area platform. Then dismantling the HE door in the flue gas path to facilitate to removal and fixing of Hot End and Hot intermediate heating element baskets (850 mm height) through this door and dismantling the existing deteriorated / eroded Hot End and Hot intermediate heating element baskets (850mm height) one by one in their places after providing gantry arrangements for lifting these deteriorated baskets. Inserting the new basket into the APH Hot End andHot intermediate module one by one. Then lowering the released deteriorated baskets one by one from 26 mtr level to '0' mtr level and kept in between PA & FD fans area through electric motor winch and loading of these released deteriorated Hot End and Hot intermediate heating element baskets in the lorry using crane and transporting to central stores and unloading for devolution including consumables, T&P's and hire charges. (The required Crane, Lorry, High capacity electric motor Winch are arranged by Contractor scope)

Charges for dismantling existing damaged and eroded Cold End Diaphragm plate in APH. Charges including for T&P's and consumables. ( Elevation -> 20 - 50 Mtr )

Charges for leading, lifting and transportation of Cold End Diaphragm plate from store to site. Charges including for T&P's and consumables. ( Elevation -> 20 - 50 Mtr ) (Necessary Cold End Diaphragm plate supplied by Board).

Charges for fabrication and erection of Cold End Diaphragm plate in APH. Charges including for T&P's and consumables. ( Elevation -> 20 - 50 Mtr ) (Necessary Cold End Diaphram plate supplied by Contractor).

Charges for dismantling existing damaged and eroded Hot End Diaphragm plate in APH. Charges including for T&P's and consumables. ( Elevation -> 20 - 50 Mtr )

Charges for leading, lifting and transportation of Hot End Diaphragm plate from store to site. Charges including for T&P's and consumables. ( Elevation -> 20 - 50 Mtr )

Charges for fabrication and erection of Hot End Diaphragm plate in APH. Charges including for T&P's and consumables. ( Elevation -> 20 - 50 Mtr ) (Necessary MS 6mm plate supplied by Contractor).

Charges for fabrication of cold end baskets gratings support frame (strip) by cutting of MS plate with required size,grinding and dismantling the existing wornout cold end baskets gratings support frame from its position, the fabricated gratings support frame (strip) fixing in their places and welding by as directed by the Engineer in charge including consumables and T&P's. (The required Old / New MS plates materials supplied by the TNPGCL at free of cost)

Supply of MS Sheet 6mm thk Material : IS 2062 Including loading, transporting & unloading charges (If the material are available in NCTPS II store at time of work execution, it will be supplied by TANGEDCO at free of cost and it will be excluded from contractor scope.)