NIT No-11 EE (SDW) II/ (21-22) Item No.02

Renovation of Walkway and other allied structure of Secondary Clarifier No.4 at 45 MGD STP Okhla, Okhla by carrying out following works: - Isolating the Secondary Clarifier by operating Sluice Gate and providing metallic sheet & gunny bags to ensure no flow in the FST. Dewatering the effluent in effluent channel and cleaning the FST with the help of required sewage submersible pumps and D.G. Set etc. De sludging and Cleaning the FST for execution of work.

Dismantling of the all control Gear Boxes form central turn table along with motor, cutting of fasteners with the help of Gas Cutter, heavy labour and shifted these to a safe workable place.

Making temporary platform with required material for safety measures men & material at both side of the bridge as per site requirement at site.

Cutting of worn out corroded M.S. sheet of walk way, angle Iron along with bottom of bridge with the help of gas cutter, all tools & tackles with safety equipment as per requirement at site.

Supply of M.S. Angle Iron different type of size 65 x 65 x 8 mm. approx 15 meter, size 75 x 75 x 8 mm approx 40 meter size 50 x 50 x 5 mm approx 80 meter, size 90 x 90 x10 mm approx 50 meter for strengthening of bridge.

Supply of different size M.S. nuts & Bolts as per requirement of site. Make:- GKW/ Unbrako

Fixing of different type of above angle iron in bridges with required suitable nut, bolts & washers by welding machine & cutting works etc as per requirement of site.

Supply of the Tie Road & adjustment assembly for supporting the scraper arm & central drum.

Fixing of above Tie Road on both side of Central Drum for Holding the Scrapper Bridge with adjustment Assembly.

Supply of M.S chequered sheet having thickness 8 mm

Fixing of above M.S. chequered sheet on the walkway bridge by cutting welding with required size.

Overhauling of Gear box and replacement of required worm, gear, pinion, bushes as per sample & size, bearings and oil seal as per requirement at site.

Fixing of centre control Gear Box along with motor, with new fasteners with the help of required material etc.

Supply of Red oxide metal primer in 20 kg packing. Make: - Asian/Nerolec/Burger.

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

Supply of synthetic Enamel paint in deep orange 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 coats of enamel paint i/c petty items.

Supply of gear oil for top up the all gears No. 320. Make: - Servo.

Testing & Commissioning of complete unit on No Load/Full Load after removing gunny bags and temporary platform form FST.

Mehar Enterprises