NIT No-17 EE (SDW) II/ (20-21) Item No. 4

Repairing of Detroiter unit No. 2 at 22 MGD (a unit of 37 MGD) STP, by carrying out following the works: - Isolating the Grit Chamber from the hydraulic system (Inflow and outflow sides) by operating Sluice Gates and providing gunny bags to prevent the access of liquid to the unit from the gates. Draining out the stagnated effluent desludging & cleaning Grit Chamber with the help of sump pumps and D.G. Set etc. so as to make the conditions at site, workable.

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.

Repairing of both scrappers bridge and scrappers by carrying out following works: -Dismantling of vertical shaft, bottom chord and worn out scrapper arms structure with arms with the help of Gas cutter, all tools & tackle.

Fabricating/Providing of complete set of scrappers as per existing size with rubber squeezers & M.S. flat.

Providing of M.S. Angle Iron of as per existing size for scrappers Arms.

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

Providing/fixing of SS Tie Rod of size 5/8” dia x length 5 Mtrs. Apprx both side of detroiter for holding the scrapper arms with adjustment assembly.

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.

Repairing of primary reduction gear box by carrying out following works: - Dissembling of primary reduction gear box.

Providing of worm gear, pinion, bushes fabricated as per sample in respect of size, finishing & MOC.

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

Providing of gear oil Make: - Servo.

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.

Repairing of Central Gear Box by carrying out following works: - Dissembling of Central Gear Box.

Providing set of Central Gear, Pinion, & Set of Bushes fabricated as per sample in terms of shape, size, MOC and machining etc. in ready to use condition.

Providing of Gear oil.

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

Painting of complete structure by carrying out following works: - Providing Red oxide metal primer in 20 kg packing. Make: - Asian/Nerolac/Burger

Providing synthetic enamel paint in black colour in 20 Ltrs. Packing. Make:- Asian/Nerolac/Burger

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 Detroiter system after general servicing of starter, 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.

Repairing of Screw Conveyor unit No. 2 at 22 MGD (a unit of 37 MGD) STP, by carrying out following the works:- Dismantling of Electric motor, Reduction gear box by cutting of Nut Bolts with the help of Gas cutter and shifting these to a safe place. With the help of lowering/ lifting tools & tackles.

Dismantling of screw conveyor along with all accessories by cutting of old & rusted fasteners with the help of gas cutter and shifting the same on the ground level with the help of lowering/ lifting tools & tackles.

Fabrication/Providing of Bearing Housing as per sample in terms of shape, size and MOC i/c all machining work.

Providing of S.S Bush as per sample in terms of shape, size & MOC i/c all machining work.

Repairing foundation of screw conveyor by carrying out necessary civil works and welding work to strengthen the screw conveyor unit

Assembling and fitting the complete screw conveyor system with all above material with the help of all lowering/ lifting tools & tackles, making proper alignment i/c all minor civil works as required at site.

Renovation of reduction gear box by carrying out following works: - Dissembling of Reduction Gear Box.

Providing of worm gear, pinion, bushes fabricated as per sample in respect of size, finishing & MOC.

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

Providing of gear oil Make: - Servo.

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

Painting of complete structure by carrying out following works: - Providing Red oxide metal primer in 20 kg packing. Make: - Asian/Nerolac/Burger

Providing synthetic enamel paint in black colour in 20 Ltrs. Packing. Make: - Asian/Nerolac/Berger

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/ commissioning of complete Screw conveyor 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.

M G Traders and Engineers