NCTPS II 2 X 600 MW MI Circle BM Division 600MW Unit II Boiler Rectification of defective tubes in boiler inter pass

Amount

Marking of defective tubes identified, during tube thickness survey / visual inspection, transportation of materials and gas, cutting of defective portion of tubes, edge preparation, welding of new spool piece with IBR welder and assisting for hydraulic test. Charges inclusive of consumables, argon gas and T&P's.

Erosion filling: This work involves filling up of eroded portion of tubes by arc welding with IBR welder up to 100 mm length. It involves, cleaning the surface of the eroded tubes and filling with IBR welder. Charges inclusive of T&P’s and Consumables such as grinding wheels, emery sheets, gada cloth etc.,

FIN/SEAL WELDING BY IBR WELDER Fabrication, grinding, welding with arrangement of scaffolding for welding of fin / seal plates in the boiler inter pass steam cooled wall and other areas of boiler to arrest the ash leakage/air ingression wherever required. Charges inclusive of cost of T&P’S and consumables(fin welding to be done by IBR welder)

Strengthening of existing joints: This work involves identification of less eroded existing joints, transportation of tools and plants, grinding less eroded joints and strengthening the joints by welding with IBR welder. Charges inclusive of consumables and T&P's.

Providing special type platform to access the rear re-heater coils for the entire re heater bottom area and back pass screen tube area for facilating Oxide scale thickness measurement and renewal of oxide scale formed tubes. The charges for transportation of scaffolding materials and consumables to the boiler rear arch slope area, erecting at 64mtrs height for a width of 3 mtrs, scaffolding and temporary platform for facilitating attending the above work. After completion work, removing the scaffolding and temporary platform from the area and shifting back the scaffolding materials. Charges inclusive of T&P's and consumables.

CKEE ENGINEERING PRIVATE LIMITED (BID ID -1068351)