TTPS Mech II AHP Breakdown maintenance works in Ash slurry disposal lines of Unit I II for the period from 01 04 2025 to 31 03 2026

Charges for erection / extension of ash slurry disposal line 250 NB m.s. pipes at dyke area as per the instruction of Engineer in charge including cost of second hand empty polythene bags & all T & P's etc.

Charges for dismantling of existing 250NB pipes, loading and unloading the same to Stores / field yard as per the instruction of the Engineer in charge including all T & P's

Charges for dismantling the existing tray in the discharge point in unit I & II, by digging out the scattered ash below the tray, pulling out the angles, supports etc, transporting them to actual required place and reassembling them and commissioning the same as per the instruction of the Engineer in charge including of cost of cutting gas & T&P’s.

Charges for replacement of 250 NB m.s. ash slurry disposal pipes at dyke area as per the instruction of the Engineer in charge including the charges for transporting, cutting gas, second hand empty polythene bags and T & P's etc.

Charges for rotation of ash slurry disposal line 250 NB m.s. pipes at dyke area as per the instruction of the Engineer in charge including all T & P's etc.

Charges for removal of choke in 340 mm OD Castbasalt pipes for all 5 nos ash slurry lines from pump house to dyke gate as per the instruction of the Engineer in charge including all T & P's

Charges for removal of choke in 250 NB m.s. pipes for all 5 nos ash slurry lines from dyke gate to delivery end as per the instruction of the Engineer in charge including all T & P's

Charges for dewatering the stagnated water in the culvert including the charges of T & P's, cost of diesel and hire charges of pumps, etc.

Charges for realignment of 250 NB m.s. pipes by lifting the pipeline, which is dislocated and fallen down due to bund breach or buried into ash slurry up to a depth of around 1 feet due to flow of ash water across the pipeline in the ash dyke area by digging and removing out the ash slurry around the pipeline, dismantling the fallen down pipes and reassembling the same to keep the line at suitable height by providing ash slag filled poly bags below the pipes and commissioning the line as per the instruction of the Engineer in charge including cost of second hand empty polythene bags, T & P's etc.

Charges for dismantling of 250 NB m.s. pipes, manually leading and rerouting to other location of the actual required area and erection of the same at dyke area as per the instruction of Engineer in charge including cost of cutting gas, second hand empty polythene bags and T & p's etc..

Charges for fabrication of m.s. angle supports and providing in the suitable location under the ash slurry disposal pipes, trays, bends etc in the dyke area as per the instruction of Engineer in charge which includes transporting of m.s. angles from stores to the work spot and devolution of scraps if any including cost of cutting gas, consumables and T & P's etc. (m.s. angle and bolts will be supplied by board at free cost)

Charges for excavation of ash slag above and adjacent side of the ash slurry pipeline to a depth of 0.5m to 1.0m and width of 0.75 m for lifting the pipes in the dyke area as per the instruction of the Engineer in charge including all T & P's.

Charges for fabrication of 250 NB assorted size m.s. bends with double end flanges out 250 NB m.s. pipes and erection of same in the worn out bends as per the instruction of Engineer in charge including cost of cutting gas, transporting and T & P's etc. (250NB m.s. pipes, flanges and will be supplied by Board at free of cost.)

Charges for cutting of assorted length of 250 NB cast basalt piece from the failed 250 NB cast basalt pipes and welding of 2nos flanges to suit the existing lines as per the instruction of engineer in charge including cost of cast basalt pipe cutting tool, cutting gas ,welding rods hire charges for cast basalt pipe cutting machine, welding machine and charges for end finishing with grout and stacking the finished pipe at a place as directed by the engineer in charge. (M.S. flanges will be supplied by Board at free of cost.)

Charges for erection and welding (matching) of m.s. flanges (280mm / 342mm ID) as per the site condition including cost of transporting, welding rod, cutting gas and T&Ps.( M.S. flanges will be supplied by Board at free of cost.)

Charges for replacement of existing 340mm OD cast basalt pipe line of ash slurry lines of unit I & II as per the instructions of the Engineer in charge including the charges for T & P's. (Hydro mach crane if required for lifting will be provided by the Board at free of cost)

R.R AND CO (BID ID -1263140)