Urgent welding work to be carried out at lift irrigation scheme Seer.

Amount

Repairs to 750mm dia. rising main by way of following steps: Repairs to major leakage at 07spots & 05 Minor spots along 750mm dia. M.S rising main at various location by way of earth excavation with the help of manual labours wherever required, then cutting appropriate size of windows to the rising main by using oxyacetylene gas plant at site for cutting of window to M.S pipe in order to carry out welding works inside the pipe. After making window in the pipe the accumulated water shall be dewatered along with dug out trench using dewatering pump till the pipe becomes dry so that the welding works can be carried inside pipe. The job then involves cleaning of rust around pipe by chipping off rusted layers inside the pipe. The cracked portion of the pipe shall be plugged by using M.S plate of suitable length to cover circumferential & longitudinal crack inside/outside the pipe. The job includes the hire charges on a/c of using D.G set, welding set, Gas cutter, load carrier, manual earth excavation, dewatering pump, manual labours, superior quality electrodes and skilled welder for completing the repair work. After successful completion of repair work, the rising main shall be tested on full load.

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