NIT No-15 EE (SDW) II/ (20-21) Item No. 7

Renovation of Secondary clarifier No. 3 along with other works at 45 MGD STP, 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 stagnated effluent and cleaning the FST with the help of sump pumps and D.G. Set. Desludging and Cleaning the FST for execution of work.

Dismantling of electric motor, primary gear box and other mechanical accessories from the top of center mechanism after disconnection from main electric supply and shifting to workable place.

Making temporary platform as safety measures on the sides of the central cage as per site requirement for dismantling of drive head

Renovation 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, MOC & finishing.

Providing of set of bearings comprising bearing 7306 – 2 Nos. 7204 – 2 Nos. & 32216 – 2 Nos. Make: - SKF/FAG

Re-fixing of primary reduction Gear box after resembling the all above parts and alignment with motor, fixing of oil seal, filling of oil.

Providing of gear oil 320. Make: - Servo.

Renovation/ Strengthening of Both scrapper Arms Bridges along with scrappers by carrying out following works:- Dismantling of worn out bottom scrappers along with arms with the help of gas cutter, all tools & tackles.

Providing of M.S. Angle Iron of size 90 x 90 x10 mm, for scrapper arms.

Fab./ providing of sets of bottom scrappers of sizes appx 2700 x 200 x 8 mm along with rubber squeezers & M.S. flat.

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

Labour charges for fixing of above scrappers arms, bottom scrappers with squeezers making hole for tightening of nuts & bolts i/c all welding & cutting works.

Providing the Tie Road with support assembly

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

Renovation of M.S Central Drum by carrying out following works: - Cutting of worn out/ portion of Central Drum.

Providing of M.S Sheet having thickness 5 mm for Central Drum.

Fixing of above M.S. Sheet of Central Drum at different places with the help of Electric Arc welding i/c the work of cutting, bending/ shaping of sheet as per site requirement.

Providing the 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 of M.S chequered sheet having 8 mm thick

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

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

Mehar Enterprises

M/S.SUPER TRADERS & ENGINEERS

INSTANT TRADE CORPORATION