NIT No. 11 Item 07

Closing of sewage controlling valves installed on upstream and lower stream of the bar screen to control the sewage flow. Make the bar screen chamber leak proof with the help of of gunny bags placed on both side of bar screen sump which is approximately 30 feet deep. It also includes dewatering of sewage with the help of submersible pump for providing the working space to the worker deployed for execution

Providing/fixing of the complete fabricated structure with M.S comb assembly made out with M.S. pipe. Fixing the M.S. slotted plate (for collect the floating material from the jaal) on the pipe with the help of electric welding i/c repairing of bushes on both side of comb with pin for operating the comb.

Providing /fixing the of lock assembly for comb made out with CI bushes square bar double roller chain having suitable pitch & MS sheet with nuts & bolts etc as required.

Providing/fixing of MS fabricated chain made out of M.S. flat strip & EN 8 Roller and also having 3 inch pitch & fixing the same at site.

Providing/fixing of MS guide channel heavy duty size 150mm x 75mm x10 mm thick for fixing in the chamber.

Providing/fixing of 10 mm thick MS sheet with MS angle for supporting of Ms guide channel in the chamber as per site requirement

Providing/fixing SS stud as per site require with nut and washer for fixing of MS sheet with the help of MS angle on chamber wall.

Repairing of existing limit switch with require nut bolt and cable as per site requirement.

Dismantling of structure i.e. gear box, motor, top roof sprocket , guide channel, shaft, scraper, rack assembly dead weight chain guide roller, conveyor belt roller etc with the help of chain pully block, gas cutter and manual labour etc as required

Repairing & overhauling of gear box including repairing , worm gear , fixing of new bearing oil seal and providing of gear oil. It also include varnishing of existing motor.

Repairing of main guide roller including machining & fixing of bushes as required i/c fixing the same at site.

Repairing of conveyor belt roller as required for their free movement . including providing and fixing of bushes/ bearing and fixing the same at site.

Painting the complete both the bar screen structure with one coat primer and then 2 coats of anticorrosive enamel paint after the completion of work.

Testing and commissioning of complete both the bar screen after completion of job in all respect including providing all safety equipment during execution of work.

Devraj Enterprises