NIT No-04 EE (SDW) II/ (23-24) Item No. 04

Renovation of Secondary Clarifier No. 1 having capacity 8 MGD at 16 MGD, STP, Okhla by carrying out the following works:- All the required works , materials, arrangements , tools & tackles , workmanship , safety equipment’s as per NHRC\NGT\ DPCC etc. guidelines and as per site requirement , remodeling all the damages up to standard if occurred any complete in all respect as per requirement satisfactorily.

Isolating the Secondary Clarifier by closing sluice gate and providing gunny bags to ensure no flow in the FST. Dewatering the stagnant water and cleaning the FST with the help of submersible pumps and D.G. sets De-Sludging and cleaning the F.S.T. manually for execution the work.

Dismantling of central primary gear drive unit after disconnection from main electric supply. Taking out motor after mechanical dismantling of sprocket chain. Removing of gear box from the base and shifting equipments in safe place.

Making temporary plate form as safety measures on the sides of the central cage as per site requirement of drive head.

Dismantling of main gear driving unit after cutting rusted fasteners by gas welding set. Dismantling of internal gear heavy unit of turn table, other gears and pinion, dismantling of bearing. Taking out vertical shaft. This includes lifting arrangement by mechanical means.

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 manufacturer standard in respect of size, finishing as per sample.

Providing of sprocket chain& wheel, as per sample.

Re-fixing of primary reduction gear box after resembling the all above parts and alignment with motor. Fixing of sprocket chain, filling of oil. The work includes servicing of starter, motor as per site requirement.

Providing of internal gear, pinion and set of bushes fabricated as per sample in respect of size, finishing as per samplefor main Gear Driving Unit.

Providing of turn table rolling balls of existing size.

Providing of Lubricating oil 320. Make: - Servo.

Fixing of Turn Table rolling Ball along with strip Liner, re-assembling & fixing of main gear driving unit complete mechanism like gear, Pinion, bearings, i/c fixing of oil seals, gaskets and filling of lubricating oil etc.

Providing/fixing of sitting arrangement near reduction gear box for safety purpose with M.s angle 40x40x6 mm length approx 10 meter and M.S sheet of 5 mm approx 5 meter and M.S pipe 40mm dia. Approx 12 meter for safety arrangement.

Renovation/ Strengthening of Scrappers arms and scrappers, by carrying out following works: - Dismantling of rusted/corroded bottom scrappers along with arms with the help of Gas Cutter, all tools & tackles.

Providing of M.S. Angle Iron of sizes 90mm x 90mm x 10mm and in a length of 7’ fit for scrappers Arms.

Fab./Providing of Bottom Scrappers of sizes appx. 2700 x 200 x 8 mm along with Rubber Squeezers & M.S. Flat.

Providing of M.S Nut Bolts of different sizes

Providing the 4 Nos. tie rod with support on both side of central drum for holding & balancing the scrappers arms with adjustment assembly

Labour charges for fixing the above M.S Angle Iron for scrapper Arms, Bottom scrappers along with squeezers i/c making hole for tightening of Nut Bolts i/c all welding & cutting work.

Dismantling of worn out V-notch of rusted not bolts with the help of gas cutter, all tools & tackles. .

Providing the S.S nut bolts as per sample for fixing the ‘V’ notch.

Fixing the V-notch in FST after drilling in RCC with power hammer including all civil work with all tools and tackles.

Cutting of worn out/ corroded M.S. sheet of walkway with the help of gas cutter, all tools & tackle.

Providing the M.S. channel of 125X 65 mm approx 25 meter and M.S Angle 65X65X6 mm approx 25 meter

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

Providing of synthetic Enamel paint in Black/Red Colour in 20 Ltrs. Make: - Asian/Nerolec/Burger

Painting of the complete structure after removing of rust with brush with one coat of primer & two coat of enamel paint i/c petty items.

Testing and commissioning the complete FST after completion in all respect on no load / full load.

M/S.SUPER TRADERS & ENGINEERS