REPAIR /MAINTENANCE OF WATER DISTRIBUTION LINE,RISING MAIN VALVES AND CONNECTED WORKS INCLUDING ATTENDING BREAKDOWN UNDER AGE E/M OF GE DSSC WELLINGTON

M&L for fabrication, supplying, installing, testing and commissioning of MS water distribution header for pumping arrangement suitable for 4 Nos (02 Working & 02 Standby) pumps of 75 HP capacity, comprising of the following complete in all respects:

Main Header- Fabricated from 200 mm dia Heavy Class MS Pipe conforming to IS 1239 (Part-I), wall thickness 6.35 mm, length 6.0 mtr, complete with 10 mm thick MS end plates welded at both ends. Pump Delivery Branches - Providing and fixing 4 Nos branch connections of 150 mm dia Heavy Class MS Pipe, each of 0.5 mtr length, for connecting pump delivery lines to the main header. Valves & Fittings - Each pump delivery branch shall be provided with: (i) 150 mm dia Cast Iron Sluice Valve, PN 1.6 – 04 Nos (ii) 150 mm dia Cast Iron Non Return Valve, PN 1.6 – 04 Nos Complete with suitable MS flanges, nuts, bolts, washers and rubber insertion gaskets. Outgoing Connection - Providing 150 mm dia MS pipe heavy duty outgoing branch from the header complete 150 mm dia Sluice Valve PN 1.6 with necessary flanges and fittings– 02 No Supports - The header shall be supported on PCC/RCC pedestals of suitable size with MS clamps (50 x 6 mm flat) including foundation bolts. Welding - All welding shall be carried out by qualified welders using approved electrodes, properly ground and leak-proof. Painting - Surface preparation by cleaning and removal of rust. Applying one coat of Red Oxide Zinc Chromate Primer & Two coats of Anti-corrosive Synthetic Enamel Paint Flow direction and identification marking with white paint Testing - Complete hydrostatic testing of the header assembly at 1.5 times working pressure for not less than 2 hours and making good defects if any. NOTE for Item No 1 : (i) Sluice Valve & NRV of suitable size will be measured and paid under relevant item. (ii). Cutting, welding, lifting, alignment, fixing, painting, valves, flanges, nuts, bolts, gaskets, clamps, PCC supports and all labour, T&P required for completion are included with quoted rate. (iii) Old retrive U/S pipe will be issued under schedule of credit.

M&L for fabrication, supplying, installing, testing and commissioning of MS water distribution header for pumping arrangement suitable for 3 Nos pumps of 15 HP capacity, comprising of the following complete in all respects:

Main Header- Fabricated from 150 mm dia Heavy Class MS Pipe conforming to IS 1239 (Part-I), wall thickness 6.35 mm, length 2.0 mtr, complete with 10 mm thick MS end plates welded at both ends. Pump Delivery Branches - Providing and fixing 2 Nos branch connections of 100 mm dia Heavy Class MS Pipe, each of 0.5 mtr length, for connecting pump delivery lines to the main header. Valves & Fittings - Each pump delivery branch shall be fixed with: (i) 100 mm dia Cast Iron Sluice Valve, PN 1.6 – 02 Nos (ii) 100 mm dia Cast Iron Non Return Valve, PN 1.6 – 02 Nos Complete with suitable MS flanges, nuts, bolts, washers and rubber insertion gaskets. Outgoing Connection - Providing 100 mm dia MS pipe heavy duty outgoing branch from the header complete & fixing of 100 mm dia Sluice Valve PN 1.6 with necessary flanges and fittings– 01 No Interconnection between headers- Fabricated from 150 mm dia Heavy Class MS Pipe conforming to IS 1239 (Part-I), wall thickness 6.35 mm, length 6.0 mtr, complete with 10 mm thick MS end plates welded at both ends. Supports - The header shall be supported on PCC/RCC pedestals of suitable size with MS clamps (50 x 6 mm flat) including foundation bolts. Welding - All welding shall be carried out by qualified welders using approved electrodes, properly ground and leak-proof. Painting - Surface preparation by cleaning and removal of rust. Applying one coat of Red Oxide Zinc Chromate Primer & Two coats of Anti-corrosive Synthetic Enamel Paint Flow direction and identification marking with white paint Testing - Complete hydrostatic testing of the header assembly at 1.5 times working pressure for not less than 2 hours and making good defects if any. Rate Includes - Cutting, welding, lifting, alignment, fixing, painting, valves, flanges, nuts, bolts, gaskets, clamps, PCC supports and all labour, T&P required for completion. NOTE for Item No 2 : (i) Sluice Valve & NRV of suitable size will be measured and paid under relevant item. (ii). Cutting, welding, lifting, alignment, fixing, painting, valves, flanges, nuts, bolts, gaskets, clamps, PCC supports and all labour, T&P required for completion are included with quoted rate. (iii) Old retrive U/S pipe will be issued under schedule of credit.

(a) Dia 200 mm

(b) Dia 150 mm

(c) Dia 100 mm

All as per Item No. 03 herein before but 100/80 mm dia including GI Pipe & Fittings complete all as specified and as directed.

Supply & fixing Ductile Iron pipe spigot and socket end class K 9 ISI marked as per IS 8329-2000 with centrifugally lined with cement mortar with flexible rubber gaskets push on type joints of 100 mm dia complete all as specified and as directed.