NIT No-15 EE (SDW) II/ (20-21) Item No. 8

Repair/ Renovation of Grit Removal unit No.2 and other allied works at 15MGD (a Unit of 37 MGD) STP, Okhla by carrying out following works: - FOR DETRIOTER UNIT Isolating the classifier from the hydraulic system by operating Sluice Gate and providing gunny bags to prevent the access of influent, draining out all the sludge and sewage water with the help of sump Pump set, D.G. Set etc. so as to make it ready for carrying out for work.

Dismantling the electric motor, Primary Reduction Gear Box and Central Gear Box by cutting of Nut- Bolts and Fasteners and shifting these to a safe workable place with the help of lowering/lifting tools and tackles.

Dismantling of vertical shaft, bottom chord and worn out scrapper arms structure with arms with the help of Gas cutter, all tools & tackle.

Providing of main vertical shaft with casing as per sample, shape & size compete in all respect in ready to use conditions.

Providing the complete set of bottom scrappers 16 nos. with squeezers, fabricated as per manufacturer standard in terms of shape, size .

Providing of M.S. Angle 65X65X10 mm approx 20 mtr. Iron as per existing size for scrappers Arms.

Providing of M.S nuts & bolts of different sizes.

Labour charges for fixing of above M.S angle irons for scrapper arms, bottom scrappers along with squeezers i/c making hole for tightening of nuts & bolts i/c all welding & cutting works. i/c fixing of main vertical shaft with casing with proper alignment.

Dissembling of primary reduction gear box.

Providing of worm gear, pinion, bushes fabricated as per sample

Providing of sprocket chain, wheel as per sample fabricated in respect of size,.

Re-fixing of primary reduction gear box after resembling of all above parts and alignment with motor. Fixing of sprocket chain, oil seal & filling of oil.

Dissembling of Central Gear Box.

Re-fixing of Central Gear Box after resembling of all above parts i/c fixing of oil seal and filling of lubricating oil.

Cutting of worn out sheet.

Providing of 8mm thick M.S. sheet for walk way.

Labour charges for fixing of above sheet on the walk-way with the help of Electric ARC welding i/c the work of cutting of sheet as per site requirement.

Dismantling of the existing damaged safety railings vertical & horizontal with the help of gas cutter and man power etc.

Providing the vertical M.S. post in a length of 1.25 mtr made out from M.S. angle iron of sizes 65x65x5 mm duly welded with M.S. plate of sizes 100 x 130 x 10 mm in one side.

Providing of M.S. pipe heavy duty ‘C’ class 40 mm dia. Make: - Jindal/ TATA

Fixing of above M.S. plate sizes 100 x 130 x 10 mm by grouting in the RCC of the floor and beam of the grit chamber. The work includes drilling by Electric Hammer and all civil work.

Cutting of hole in the vertical post with the help of Gas cutter/ Grinding machine suitable for passing through the above Horizontal M.S pipe of Railing.

Fixing of 60 mtrs. Horizontal pipe of railing in the vertical post with proper leveling & thermal welding of the same.

FOR RAKE CLASSIFIER Dismantling of rake classifier by cutting of old & rusted fasteners with the help of gas cutter and shifting the same on the ground level with the help of manual labour.

Dismantling the electric motor, reduction gear box by cutting of nut bolts and fasteners and shifting to a safe & workable place.

Providing complete set of GM bushes, shaft, cover plates, rings, counter weight seating with counter weight and studs, plumber blocks complete, worm gear fabricated as per sample with same size.

Fabrication and provide set of sprocket wheel, pinion & chain, as per sample in respect to shape, size

Fabrication of S.S. pin i/c fixing on the top for controlling the angle of flow.

Fab./ Providing the guide channel 100X50 mm for bottom scrapper as per existing size.

Providing of Complete Set of Bottom Scrappers by M.s .angle 40X40X5 mm (62 Nos.) as per existing size with rubber squeezers.

Fixing of Guide channel & complete set of Bottom Scrappers.

Assembling and fitting the complete structures at site after assemble on the ground level making proper alignment and balancing.

Painting of the complete structure after removing of rust with brush with one coat of primer, two coat of enamel paint i/c auxiliary material like old dhoti, emery paper, brushes etc.

Testing and commissioning of classifier system after general servicing of starter, Motor, making electric connection and testing of the same on load at site. The work includes contingency charges, providing of heavy labour including any risk and cost of the labour etc.

SAI TRADING CORPORATION

Jal Dhara Engineers India

INSTANT TRADE CORPORATION