NIT No-06 EE (SDW) II/ (20-21) item No. 6

Renovation of Grit Removal System by renovation of Grit Chamber No.1 at 22 MGD, (a unit of 37 MGD), STP Okhla. By carrying out following works:- For Detroiter unit:- Isolating the classifier from the hydraulic system by operating sluice Gate & providing gunny bags to prevent access of influent, draining out all the sludge and sewage water from the classifier with the help of sump pump, D.G. set etc. so as to make it ready for carrying out of work.

Dismantling the electric motor, reduction Gear Box etc. by cutting of Nut Bolt and fasteners and shifting these to a safe workable place with the help of Lowering/Lifting tools & tackles.

Dismantling of vertical shaft, bottom chord and scrapper arms etc. by cutting of Nut Bolt with the help of gas cutter & shifted to a safe place with the help of lowering/Lifting tools & tackles/ Man power as required.

Fabricating and provide of main vertical shaft with casing made out of anticorrosive steel shaft with antirust treatment in accordance to the sample., shape and size complete in all respect in ready to use conditions.

Repairing of bottom chord duly fitted with Squeezers mounted on blades in accordance to design and laid out instruction of the manufacture strictly in accordance of existing chord & scrapper for both.

Renovation of main drive and drive gears Box with replacement of main drive wheel gear, worm gear, sprocket chain, oil as required fabricated in accordance as per sample. Shape and size complete in all respect in ready to use conditions.

Assembling and fitting of the complete system, making proper alignment and balancing etc. as required at site including cost of Nut bolts, washer, packing etc.

Testing & commissioning of Detroiter 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 1/c all risk and cost.

For Screw conveyer unit:- Dismantling the electric motor, reduction gear box etc. by cutting of Nut Bolts and fasteners and shifting these to a safe workable place with the help of Lowering/ Lifting, tools & tackles/Man Power as required.

Dismantling the screw conveyor along with all accessories and shifting to a safe workable place with the help of Lowering/ Lifting tools & tackles/Man Power as required.

Fabrication/Making of Screw conveyor with the 200 mm pipe and 300 mm wide blade of M.S Sheet of 5mm approx length of approx 12 meter , fabricated as per sample in terms of shape & size i/c all Mechanical works.

Renovation of main drive and Reduction Gear Box with replacement of main drive wheel gear, worm gear, sprocket chain, oil seal, filling of gear oil, Providing/Fixing of new tyre coupling etc.

Dismantling of 2 HP, 415 Volts, 3 Phase, 960 RPM Induction motor. The work includes rewinding of stator of motor with super enameled copper wire after cleaning the slots with CTC and putting insulating material, replacement of winding leads, varnishing, baking with Dr. Back varnish, replacement of connection plate and box. Assembling the motor and put on foundation tightening of the same i/c replacement of tyre coupling.

Assembling & fitting of complete screw conveyor system along with main drive & drive gear system with the help of Hydra and heavy men power. Making proper alignment and balancing as required at site i/c all minor civil work, cost of Nut Bolt, washer, packing etc.

Testing & commissioning of complete structure after general servicing of starter, motor, making electric connection & testing on Load at site. The work includes contingency charges, providing of heaving Labour i/c any risk & cost of the Labour.

Painting of the complete structure with one coat of primer & two coats of enamel paint.

M/S.SUPER TRADERS & ENGINEERS