Rejuvenation of Eraivankadu Head works in Zone-IV, Vellore Corporation

Supply and delivery of 150 Lpm x 125 m Head clear water vertical wet type submersible pumpset suitable for 150mm dia borewell conforming to IS 8034/2002 as amended thereafter and BEE 3 Star Rated capable of discharging noted LPM against head of water column due to all causes. The pump shall be with stainless steel shaft and dynamically balanced bronze or Cast SS impeller, brass screws and CI FG 200 grade pump bowl/diffuser with ISI mark. The pump shall be directly coupled to a continous rated two pole suitable wet type vertical squirrel cage induction motor as per IS9283 /1995 as amended there after, suitable for operation in AC three phase 415 V+/- 10 %, 50 HZ +/- 5 % (WD-M1663 TWAD SoR 25-26)

Erection of power pumps in borewell labour charges for erection of twin packer duplex type jet pumps in borewells upto 150 mm dia including fixing of Suction pipe regulating valves with jet assembly upto a maximum depth of 30 m and delivery pipe valves pressure gauges upto the exterior wall of pump room and erection of panel board consisting of TPICN switches starter, Voltmeter, Ammeter, three indicator lamps capacitor and laying and jointing the cables and twin earthing as per IE rules etc., complete and testing the pumps and trail run for 10 days including signing of completion of reports as required by EB authorities and finishing the pipe holes including the foundation bolts, nuts and earth pits. Above 3 HP upto 7.5 HP (WD-M0869 TWAD SoR 25-26)

Supply and delivery of L.T. CABLES 3 CORE 1.1 KV GRADE ARMOURED ALUMINIUM CONDUCTOR CROSS LINKED POLY ETHYLENE INSULATED PVC SHEATHED CABLES CONFORMING TO IS 7098 (PART I)/1988 AND AS AMENDED THEREAFTER WITH ISI MARKING

70.00 Sq.mm (WD-M1965 TWAD SoR 25-26)

95.00 Sq.mm (WD-M1966 TWAD SoR 25-26)

Laying L.T. CABLES- 3,3.5,4 CORE 1.1 KV GRADE ARMOURED ALUMINIUM CONDUCTOR CABLE CONFORMING TO IS 1554 PART I AND AS AMENDED THERE AFTER WITH ISI MARKING PVC INSULATED AND SHEATHED 3 CORE FLAT TYPE COPPER CABLE WD-M2016 TWAD 25-269

JOINTING OF L.T. CABLES- 3,3.5,4 CORE 1.1 KV GRADE ARMOURED ALUMINIUM CONDUCTOR CABLE CONFORMING TO IS 1554 PART I AND AS AMENDED THERE AFTER WITH ISI MARKING PVC INSULATED AND SHEATHED 3 CORE FLAT TYPE COPPER CABLE

95.00 Sq.mm (WD-M1992 TWAD SoR 25-26)

Supply, delivery and fixing of GI Specials & other specials including cost of all material charges and labour charges etc., complete as per Specifications

80 mm GI Tee WD - M0595 TWAD 2025-26

80 mm GI Bend M0602 TWAD 2025-26

80 mm GI Coupling M0596 TWAD 2025-26

80 mm Flange set WD-M0597 TWAD 2025-26

80 mm GM NRV M0619TWAD 2025-26

Supply and delivery of 80 mm DI D/F Gate (sluice) valves (soft seated) resilient seated soft sealing Gate Valves (Sluice Valves) with body Bonnet of Ductile cast iron of Grade GGG 40 or GGG 50, Wedge fully rubber lined with EPDM replaceable spindle nut without gland packing and with 3 O- Ring protection on the shaft and seals of NBR and the valves should be of Vacuum tight and 100% leak proof with face to face dimensions as per BS 5163-89/ISI 14846-2000/DIN 3202 F4. All the valves should be with electrostatic powder coating both inside and out side with pocket less straight through body passage. All the valves are to be compatible for buried application with pressure rating PN 10/16 and with 5 years warranty (WD-M1198 TWAD SoR 25-26)

Supply and delivery of 110 mm 6 kg per Sq.cm PVC PIPE (for POTABLE WATER SUPPLY as per IS 4985/2000) ISI make in good quality including cost of all material charges and all labour charges etc., complete as per standard specifications. WD - M0013 TWAD 2025-26

Supply, delivery and fixing of PVC Specials including cost of all material charges and labour charges etc., complete

110 mm PVC Coupler WD - M0106 TWAD 2025-26

110 mm PVC Bend WD - M0108 TWAD 2025-26

110 mm PVC Elbow WD - M0112 TWAD 2025-26

Solvent Cement

Supply, delivery and fixing of DI Specials including cost of all material charges and labour charges etc., complete

80 mm DI Tee WD - M0106 TWAD 2024-25

80 mm DI Bend WD - M0106 TWAD 2024-25

Supply and delivery of 2500 Lpm x 40 m head Open well Submersible pump set conforming to IS 14220 /2002 and as amended thereafter and BEE 3 Star Rated capable of discharging the following duties due to all causes. The pump shall be with stainless steel shaft and dynamically balanced bronze mixed type impeller, CI FG 200 grade casing and brass screws and rotor shall be of copper rod as per IS 613/1984 with ISI mark. The pump suitable for installation in sump with 1.1KV grade 3 core suitable copper flat submersible cable to a length of 15m with necessary cable joints. The non-return valve located at the top of the pump in the discharge outlet connection is to be designed with minimum friction. The pump should be directly coupled to 2880 RPM, three phase, 50 Hz (±5), 415V+6% & 415V-15% squirrel cage induction motor suitable for DOL upto 5 HP, Fully Automatic Air break Star Delta up to 20 HP and Auto Transformer starter for above 20 HP starting and for continuous operation.WD-M1810 TWAD -2025-26

Labour charges for the erection of submersible pumpset in borewell/openwell including fixing and jointing submersible cable with proper clamps upto the starter to required depth and also fixing of riser pipes to the required depth valves erection clamps, pressure gauges upto the exterior wall of pump room and erection of panel board consisting of TPICN switches starter, Voltmeter, Ammeter, three pilot (indicating) lamps capacitor single phasing preventor, water level guard and laying and jointing the cables and twin earthing as per IE rules etc., complete and testing the pumpset and trail run for 10 days.

Above 10.00 HP to 20.00 HP (WD-W0873 TWAD SoR 25-26)

EARTH WORK EXCAVATION FOR PIPE LINE WORKS HAVING BED WIDTH OF 1.25M AND BELOW ON LINEAR MEASUREMENT BASIS

For DI Pipe Line -250mm dia

Supply and Delivery of 250mm DI pipe k9 class DUCTILE IRON SOCKET/SPIGOT PIPES FOR CLASS K9 AS PER IS 8329/2000

250mm DI pipe k9 class

Supply and delivery of 250mm DI D/S bend 90 degree

Supply and delivery of 250mm DI D/S bend 45 degree

Supply and delivery of 250mm DI D/S bend 22.5 degree

Supply and delivery of 250mm DI D/S bend 11.25 degree

Supply and delivery of 250mm Mechanical joint collar

Supply and delivery of DI Flange special 250mm - 300mm dia

Supply and delivery of 250mm DI D/F Gate sluice valves (soft seated) resilient seated soft sealing Gate Valves(Sluice Valves) with body Bonnet of Ductile cast iron ofGrade GGG 40 or equivalent grade, Wedge fully rubber lined with EPDM replaceable spindle nut without gland packing and with 3 ORing protection on the shaft and seals of NBR and the valves should be of Vacuum tight and 100% leak proof with face to face dimensions as per BS 5163-89/ISI 4846-2000/DIN 3202 F4

Lowering of 250mm D.I k9 Pipes and specials in the trenches and laying to proper grade and alignment and as directed by the TWAD Officers.

Jointing of 250mm DI k9 pipes and specials with rubber gaskets (tylon joint) including cost of lubricants. (Including cost of jointing materials)

Jointing of 250mm Mechanical joint collar

Supply and Delivery of Tamper proof DI single chamber double orifice triple function (ventilating, admitting & ventilating during operation) air release valve with pressure rating PN 10/16 with body and cover made of Ductile Iron of Grade GGG 40 or GGG 50, conforming to IS 1865 with Food Grade Epoxy Powder coating (EP-P) inside and for outside of colour blue RAL 5005. All internal parts such as float, shell etc., cover bolts, made of Austenitic alloy steel of SS AISI 304/316. The float shall be made of Polytetrafluroethylene/ Austenitic alloy steel of AISI 304/316. Gaskets and seals of EPDM / Neoprene rubber for TWAD Board works anywhere in Tamil Nadu and with 5 years warranty - 100 mm dia

Supply and delivery of 20mm dia and above x 90mm to 120mm length fully threaded bolts and with nuts 2 Nos.

Supply and delivery of 3 ply RI Rubber Sheet SOR 25-26

Supply and delivery of G I PIPES (MEDIUM) AS PER IS 1239/PART I/2004

80mm dia (WD-M0491 TWAD SoR 25-26)

100mm dia (WD-M0492 TWAD SoR 25-26)

Supply and delivery of GI reducer 100 mm x 80 mm (WD-M0525 TWAD SoR 25-26)

Supply and delivery of G.I. Equal Elbow plain

100mm dia (WD-M0594 TWAD SoR 25-26)

80mm (WD-M0594 TWAD SoR 25-26)

Supply and delivery of G.I. Equal Tee plain - 80mm dia (WD-M0595 TWAD SoR 25-26)

Supply and delivery of G.I. Flange set

100mm dia (WD-M0597 TWAD SoR 25-26)

80mm dia (WD-M0597 TWAD SoR 25-26)

REFILLING FOR PIPE LINE WORKS HAVING BED WIDTH OF 1.25M AND BELOW ON LINEAR MEASUREMENT BASIS

For DI Pipe Line - 250mm dia

Plain Cement Concrete 1:2:4 (one cement, two Crushed Stone Sand (M- Sand) and four coarse aggregates) using 20mm size ISS HBG metal including cost and conveyance of all materials to site and including for the mixing, laying and labour charges etc., complete as per standard specification

Construction of 250mm Valve pit as per type design

Construction of 250mm x 80mm Air Valve pit as per type design

Removal of centrifugal pumpset/ jet pumps/ submersible pumpsets and its accessories from borewell/ open well for attending repairs 50% of the rates mentioned under item 17 (a), (b) (c) and (d) may be allowed for the respective Horse power

Above 5.00 HP to 10.00 HP

Above 10.00 HP to 20.00 HP

Supply and delivery of clear water vertical wet type submersible pumpset suitable for 150mm dia borewell conforming to IS 8034/2002 as amended thereafter and BEE 3 Star Rated capable of discharging300 LPM against 40m head of water column due to all causes. The pump shall be with stainless steel shaft and dynamically balanced bronze or Cast SS impeller, brass screws and CI FG 200 grade pump bowl/diffuser with ISI mark. The pump shall be directly coupled to a continous rated two pole suitable wet type vertical squirrel cage induction motor as per IS9283 /1995 as amended there after, suitable for operation in AC three phase 415 V+/- 10 %, 50 HZ +/- 5 %

Labour charges for the erection of submersible pumpset in borewell/openwell including fixing and jointing submersible cable with proper clamps upto the starter to required depth and also fixing of riser pipes to the required depth valves erection clamps, pressure gauges upto the exterior wall of pump room and erection of panel board consisting of TPICN switches starter, Voltmeter, Ammeter, three pilot (indicating) lamps capacitor single phasing preventor, water level guard and laying and jointing the cables and twin earthing as per IE rules etc., complete and testing the pumpsetand trail run for 10 days. (WD-W0872 TWAD SoR 25-26)

Supply and Delivery of 250mm DI D/F Slanted seat Swing Check Valve. Body of ductile cast iron of Grade GGG 40 or equivalent grade and disc of ductile cast iron GGG 40 or equivalent grade with fully encapsulated EPDM rubber, where both faces can be used. Electrostatic epoxy powder / liquid coating (EP-P) inside and outside color blue RAL 5005 with minimum coating thickness of 250 microns..

Supply and delivery of 250 A TPN switch disconnnector fuse units in sheet steel enclosure with HRC fuses Double break

Supply and delivery of 250A 3 phase 4 pole change over switch

CABLE LAYING - For laying below GL including earth work

Supply and delivery Up to 50HP/37 KW (which includes LT meter panel board, 6 Nos. suitable fuse carriers

Weathering Course with Concrete Broken Brick (S.I.No.278) & ( P & D) Data 54.Jelly 20mm gauge in pure slaked lime (no sand to be added) over roof slab,the proportion of brick jelly to lime being 32 to 12.5 well beated with wooden beaters for giving required slope and thickness snd as directed by the departmental officers etc., complete

Finishing the top of roof with one course of machine pressed tiles of size 200 mm x 200 mm x 20 mm of approved quality in Cement Mortar 1:3 (One Cement add three sand) 12 mm thick mixed with water proofing compound conforming to ISS at 2% by weight of cement used and the joints pointed neatly to full depth of tiles with the same cement mortar mixed with red oxide and water proofing compound including curing etc., complete

Painting two coats with ready mixed Plastic Emulsion Paint approved quality and colour over a priming coat, including thorough scrapping, clean removal of dirt, etc complete and including necessary plaster of paris, putty, wherever required etc, complete as per standard specification. - 10 sq.m