REPAIR/MAINTENANCE OF EXTERNAL WATER SUPPLY AT AF STN GORAKHPUR

Amount

Excavation in trenches in soft/loose soil n.exc 1.5 mtr wide and n.exc 1.5 mtr depth and getting out complete all as specified and directed.

Returning, filling in including spreading, levelling, watering and well ramming in layers not exc 25 cm thick complete all as specified and directed.

Removing surplus excavated material not exc 50 mtrs and depositing where directed at a level not exc 1.5 mtr above the starting point complete all as specified and directed.

Taking up cast iron water mains 80mm bore pipe (incl all fittings) with spigot socketed end and lead joints, incl burning out joints and recovering lead complete all as specified and directed.

Taking up cast iron water mains 100mm bore pipe (incl all fittings) with spigot socketed end and lead joints, incl burning out joints and recovering lead complete all as specified and directed.

Taking up cast iron water mains 150mm bore pipe (incl all fittings) with spigot socketed end and lead joints, incl burning out joints and recovering lead complete all as specified and directed.

Supply & laying in trenches ductile iron (DI) pipe line 80mm dia ISI marked (IS-8329) K-7 class with and including all fittings and specials of (K-7), push-on joints with jointing material/ring laid in trenches, commissioning and tenting complete all as specified and directed. Note:- Earth work shall be measured and paid for separately.

All as per item No. 7 above but for 100mm dia pipe.

All as per item No. 7 above but for 150mm dia pipe.

Taking up or down steel tubing 20mm bore and connection for removal from site complete all as specified and directed.

All as per item No. 10 above but for 25mm bore pipe.

All as per item No. 10 above but for 40mm bore pipe.

All as per item No. 10 above but for 50mm bore pipe.

S&F 20mm bore steel water tubing galvanized medium grade with all fittings of medium grade in (walls, trenches, ceiling and floors etc.) complete all as specified and directed

All as per item No. 14 above but for 25mm bore pipe.

All as per item No. 14 above but for 40mm bore pipe.

All as per item No. 14 above but for 50mm bore pipe.

M&L in replacement of cast iron sluice valve 80mm dia with stainless steel spindles with flanged ends duly ISI marked confirming to IS 14848(2000) , PN-1 type including jointing materials, rubber gasket suitable size nut bolts and washer etc including necessary excavation or removing of sludge water from pit complete all as specified and directed.

All as per item No. 18 above but for 100mm dia.

All as per item No. 18 above but for 150mm dia.

All as per item No. 18 above but for 200mm dia.

M&L for cutting of road/hard standing for laying/dismantling of pipe line and making good disturbed surface and matching with the existing surface after laying of pipe line, complete all as specified and directed.

S&F for demolition of old unserviceable valve chamber and construction of new valve chamber of size 1m x 1m x 1 mtr with brick work comprising the following items complete all as specified and directed. (a) 150 MM thick PCC foundation (1:2:4) type B-2 40 MM graded aggregate. (b) Brick construction with (1:6) cement sand mortar and rendering 15 mm thick externally and internally complete fair face of brick works surface in CM (1:4). (c) MS cover of thickness 4 mm double door type welded to angle of size 40x40x5 mm embedded in cement coping in PCC (1:2:4) type B-0 with anchor fastener including looking arrangement complete with two coat of highly corrosive resistant epoxy point over one coat of red oxide primer.

S&F in repair for 20mm bore gun metal, globe or gate valves, with iron wheel hand, screwed both ends for iron pipes complete all as specified directed.

All as per item No. 24 above but for 25mm bore.

All as per item No. 24 above but for 40mm bore.

All as per item No. 24 above but for 50mm bore.

M&L for repairing cast iron sluice valve 80mm dia flanged type of any make by dismantling the valve replacing the bolts nuts, washers, check nut, gaskets, spindle, wedge nut hand wheel set screw etc and reassembling and refixing the same in position including repairing the worn out gland packing and testing complete all as specified and directed.

All as per item No. 28 above but for 100mm dia.

All as per item No. 28 above but for 150mm dia.

All as per item No. 28 above but for 200mm dia.

M&Lfor flanged pipe joints with 3 mm thick rubber gasket (packing ring) including provision of suitable size bolts, nuts and double washers complete for 80mm dia pipe and testing complete all as specified and directed.

All as per item No. 32 above but for 100mm dia.

All as per item No. 32 above but for 150mm dia.

All as per item No. 32 above but for 200mm dia.

M&L for opening of leakage in lead joints of 80mm bore CI pipe line and taking out lead joints by burning /melting including supplying and refilling the lead points caulking including excavation & earth work, complete all as specified and directed. (Note: old lead shall be reused again)

All as per item No. 36 above but for 100mm dia.

All as per item No. 36 above but for 150mm dia.

All as per item No. 36 above but for 200mm dia.

M&L for opening of leakage in GI pipe joints of 15mm bore of Gl pipe and taking out unserviceable part like union tee elbow etc with provisioning of new materials complete all as specified and directed.

All as per item No. 40 above but for 20mm bore pipe.

All as per item No. 40 above but for 25mm bore pipe.

All as per item No. 40 above but for 40mm bore pipe.

All as per item No. 40 above but for 50mm bore pipe.

Cutting of cast iron pipes of 80mm bore in position for insertion of new tees, branches, etc. including diverting due to residual water in pipes complete all as specified and directed.

All as per item No. 45 above but for 100mm dia.

All as per item No. 45 above but for 150mm dia.

S&F in replacement CI NRV 150 mm bore ISI marked and including jointing materials, i.e. rubber gasket, nuts, bolts and washers etc including testing complete all as specified and directed.

M&L for cement concrete 1:3:6 type C-1 using 20mm graded stone aggregate as in coping including form work complete all as specified and directed.

M&L for drilling, tapping cast iron water mains (in position) for branch connections of 20/25 mm bore GI Pipe, including saddle pieces and nuts & bolts complete all as specified and directed.

S&F ductile iron fittings for pipe of pipe upto 150mm dia such as bends (any type, radius and angle) tapers any type, (straight, bend, increasing, decreasing or double socket etc.) Tee pieces single branch. "Y" junction, double branch, cross collars, caps and plugs complete all as specified and directed.

Hindustan Power Corporation