NITNo7ItemNo2

Service overhauling of the flow control valve for the Grit Classifier No 1 with the help of manual labour, for its smooth operation. The job includes replacement of the broken GM Garari & other consumable items & per sample as per site requirement.

Isolating the Rack Classifier & deteriator by closing the sluice gate installed at the incoming channel. The job also includes providing of gunny bags at outlet of the grit classifer to avoid backflow and dewatering / cleaning of sewage water with the help of submersible pump.

Removing of the sludge deposited in the Grit classifier and the allied incoming channel and dumping the same below the outlet of the rack.

Renovation of Rack Classifier by carrying out the following work: Cutting of the Nut Bolts, Bracket of the rack with the help of gas cutter, dismantle the rack assembly from the rack chamber to ground level with the help of hydraulic crane

Strengthening the complete structure with replacement of damage & weak channel / angle with the help of Gas Cutter, Welding Set & labour.

Replacement of the bottom scrappers. Job includes cutting the old and fixing new with the help of electric welding.

Repairing / servicing of gear box of the rack. The job includes replacement of the main Bronze Gear with shaft & bearing with oil seal and complete in all respect

Replacement of the bushes, pins, & plumber blocks with bearings. The job includes machining / casting of the bushes as per sample.

Assembling the rack in the chamber with the help of mobile crane and fixing the other spares with required hardware goods.

Renovation of Deteriator by carrying out the following works: Dismantling of old damaged M.S. structure with the help of gas cutter and taking out from the grit chamber by manual labour

Dismantling and Removing of gear box, motor, chain sprocket, chain of turn table, coupler, turn table and main shaft after cutting of all rusted nut bolts by gas cutter and other required tools & tackles, chain block etc.

Strengthening the existing M.S arm by cutting and removing of old worn out M.S Angle / flat and fixing of new angle / flat by welding work on proper way as per site requirement.

Replacement of Bottom MS Scrapper with the new ones made out from 6 mm thick MS flat dully drilled for fixing of nylon worn patta with MS strip at the lower end of the scrapper etc. as per existing shape of size / sample. The job includes cutting and removing old worn out scrappers by the help of gas cutter.

Repairing of turn table by making new ball seat in both parts (housing and main worm gear) and fixing of new liner the job includes cutting and removing of old rusted liner for fixing of new ball.

Repairing of internal parts of turn table like worm bus, shaft by remateling and machining to make proper size of bearing seat and fixing with worm bush by providing & fixing of new key etc. The Job includes providing/fixing of oil seal & bearing in the turn table and fabrication/fixing of MS bush in the shaft on both side for making the alignment.

Providing of balls for the turn table of the deteriator as per sample

Supply of chain and chain sprockets as per sample.

Re-fixing of Complete Turn Table, main shaft with coupler, arm, gear box, motor, chain sprocket, chain of turn table with proper alignment and balancing as per job requirement.

Painting of the complete structure Rack Classifier, deteriator & bridge by red oxide paint and black synthetic enamel paint.

Testing & commissioning of Rack Classifier and deteriator unit on NO Load & On Load.

JAI DURGA ENGINEERS AND CONTRACORS