Periodic maintenance/ minor repairs to 500 mm dia. NRVs on delivery line along with repairs and strengthening to 900 mm diameter Rising main No.01, 02 and suction and delivery pipes at Lift Irrigation Station Lakhanpur

Amount

Periodic maintenance/ minor repairs to 500 mm dia. NRVs on delivery line along with repairs and strengthening to 900 mm diameter Rising main No.01, 02 and suction and delivery pipes at Lift Irrigation Station Lakhanpur(as per scope of work Annexure c of SBD)Dismantling of the 500 mm dia. NRV installed on delivery lines of Unit No. 01, 02, 03,05&09by way of opening of the top cover and removing the hinge pin and flap door.Cleaning the Valve from inside as well outside and making surface smooth with emerypaper by removing rust and clay. Repairing of 04 Nos. Bushes and Hinges by way of machining on the lathe, providing and fitting of 01 No. Bush of Leaded Tin Bronze and Hinge Pin of SS or Bronze in place of damaged one. The size and specifications of the hinge pin must be brought to the size so as to properly fit inside the valve.The repairs to the Bypass arrangement of the delivery line No. 01, 02, 03, 05 & 09by way of welding at all the leaked joint stand and the replacing the damaged pipes and flanges and assembling the by-pass system using new nuts and bolts. Replacing the damaged rubber sheet of the all the 05 Nos flap doors made up of CI by way of opening all the nuts from the M.S ring on the flap,removing the damaged rubber sheet and fitting the new rubber sheet of appropriate thickness to stop the backflow of the water by complete sealing of the flap. Fittingthe M.S ring with new bolts. Fitting all the flap doors inside the Valve bodies’ using hinge pins. Assembling 05 No. Non-return valves by way of fitting of the top cover using high quality gasket, gland dori, perfect sealant and new HT nuts and bolts/studs.Complete job includes cost of material,transportation/carriagecharges, labour charges and charges for tool and tackles required forexecution of job.(01 no job) Strengthening of 13 Nos. weakened / leaked joints of which 06 Nos are on delivery pipes and 07 Nos are on suction pipes installed at lift irrigation station Lakhanpur by way of removing the old and leaked welding by grinding so that a V- groove is formed in the joint. Then welding all around the periphery of joint with three layers in such a way that leak proof joint is made by using superior quality welding electrodes. If needed M S Plate of suitable size is welded to strengthen the joint. Welding works should be of standard quality. Finishing the welded joints and removing the unwanted deposits. The job is inclusive of cost of material, labour charges, the hire charges of welding set and the charges for tools and tackles required for the execution of job Complete job. (01 no job) The job includes strengthening of the rising main no.1 of 900 mm dia at 07 points leaked/weaker joints/spots at different locations by way of cleaning the area to make path upto the destination and also around the site of work by way of uprooting of grass, bushes etc including carrying out of excavation work underneath 900mm dia M.S pipe wherever required as per the site conditions so as to facilitate the welding works around the periphery at weak joints. Re- Strengthening of 04 nos. spots by way of welding three layers of flux around the periphery of 900mm dia. M.S pipe in such a way that leak proof joints is made by using superior quality/welding electrodes. Removal of unwanted deposit of material and finally finishing it. Strengthening of 03 nos. joints by way of clearing the area in the vicinity of rising mains by manual labour and then plugging of leakages by providing horizontal strip of 4mm thickness of mild steel as per the site requirement by way of welding with superior quality welding electrodes. The welding works is carried out by engaging skilled labour and then filling the earth at the excavated places. The job is inclusive of cost of material, labour charges, the hire charges of welding set and the charges for tools and tackles required for the excavation works and levelling of earth etc. Complete job. (01 no job) Strengthening the rising main No. 02 of 900mm dia. at 09 no. leaked / weaker joints/spots at different locations by way of cleaning the area to make path up to the destination and also around the site of work by way of uprooting of grass, bushes etc. including carrying out of excavation underneath 900 mm dia M.S. pipe wherever required for facilitating the welding work around the periphery at the weaker joints. Re-strengthening of 05 nos. joints by way of welding three layers of flux around the periphery of 900 mm dia M.S. pipes in such a way that leak proof joint is made by using superior quality welding electrodes. It is followed by removal of undesirable deposits and finally finishing it. Strengthening of 04 nos. joint by way of clearing the area around the rising mains by manual labour and plugging leakages by providing horizontal strip of 4mm thickness of mild steel as per the site requirement by way of welding with superior quality welding electrodes. The job includes cost of material, labour charges of welding set required for the execution of job and also allied tools and tackles required for excavation works and levelling works. Complete job(01 no job)

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