Public Health Engineering Department Tender

Repairs to 80 mm dia GI rising main laid underground from intake sump to existing SR by way of: - a) Earth work excavation at leaking spots. The job includes cost on account of tools, tackles, skilled labour / JCB/ Hammer drilling / welding process & arrangement of D.G set whichever is feasible at site. b) Excavation = 4ft x 4ft x3ft = 48 cubic ft =1.35cum x 3 spots = 04 cum c) Inspection of leaking spots to assess the cause and extent of damages d) Repairs by way of P/F of fresh rubber gaskets, nuts and bolts. The job includes welding of cracked pipes /flanges wherever necessary by arrangement of welding sets, tools, and tackles shifted to site, with least inconvenience to general public and movement of traffic. e) Refilling of trenches along the brim/ parts of the road after necessary repairs as per site requirement. f) Testing of repaired joints after repairs on full load.

P/F of assorted size of nuts and bolts for replacement of damaged ones of the raising main in order to check the leakages properly.

Dismantling of the damaged NRV and then Providing, fitting of DI heavy duty 80mmØ double flanged Non return valve suitable for PN 1.6, to be fitted in delivery pipe. The Non return valve to be of relevant ISI mark reputed make. The cost includes providing of 02 nos flanges suitable size. Testing the NRV on full load. All tools and tackles required for execution of job are to be arranged and brought to site by contacting agency. Make: VAG/Talis or equivalent