Name of Work:- Repair to reducer and manifold of 500 mm dia Sitlee-Lohar HT rising main along with allied works in Sitlee.
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Item Description
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Repair to reducer installed at 500 mm dia. Sitlee-Lohar mild steel spiral welded HT rising main. Opening up of the wash out for clearing/draining the water from the rising main. Carriage of welding cables, welding set, welding electrodes gas cutter, oxygen-LPG cylinders and other allied material to the site of work using mechanical transport. The job includes cleaning and removing the old cracked welding from the leaked reducer by way of grinding them with the portable grinder. Welding the cracked joints of the reducer by applying the first layer in continuous butt weld using superior quality welding electrodes of size 3.14 mm and 4 mm by skilled welder. Chipping and grinding the first layer thus removing the slag to perform the 2nd successive layer in continuous butt/fillet weld. Properly chipping away the slag formed after each successive welding layer so that the welding is clean, smooth and leak proof. The job also includes repair to the manifold where one line from HT and another from CPS meets. Cleaning and grinding the cracked joints with portable grinder. Welding the joints using superior quality electrodes of size 3.14 mm and 4mm. To further strengthen the welding joints providing and fixing the MS plate/strips on the welding joints. The job further includes replacing the damaged rubber sheet/gasket of the flowmeter. Cutting the pipe piece with the help of gas cutter for the removal of the damaged rubber sheet and fitting of new one. Open the nuts and bolts with the help of spanners/ring spanners. Cutting of the rusted nuts and bolts with the help of gas cutter if any. Providing and fitting the new rubber sheet to the flowmeter and tighten all the nuts and bolts, weld the pipe using superior quality welding electrodes of size 3.15 mm and 4 mm by skilled welder in three layers. Properly chipping away the slag formed after each successive welding layers so that the welding is clean, smooth and leak proof. The job further includes removing of the old paint/dust/dirt of the manifold pipe (approx 25 sqm) by way of rubbing with fine steel scrapper and rubbing with sand paper to obtain clear and even surface. Applying the one or two coats of superior quality epoxy black paint by highly skilled painter. Test the rising main on full load after completion of the work. Complete job includes cost of material, carriage and labour charges at site etc. Please Enable Macros to View BoQ information
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