REPAIRS MAINT OF EXTERNAL WATER SUPPLY PIPE LINES PIPE LINES AT SEWAGE INSTALLATION VALVES WITH VALVE PITS PUMPSETS STARTERS WITH ALLIED WORKS AT MADAMBAKKAM NARENDRA PLACE AND 9 PandS CLEANING OF OHT UG SUMP ETC AT AIR FORCE STATION TAMBARAM

Amount

M&L for attending water supply complaints of any type , finding of fault/ defect and repairing the same including required jointing materials and making water supply functional complete all as specified and directed at site. Note:- Quoted rate shall be inclusive for the following provisions:- (i) Contractor shall deploy one plumber and one helper for collect the complaints from MES complaint cell as and when intimated by the JE/ Engineer-in-Charge. (ii) Tools,minor spares such as washer,nuts,white lead etc as required for rectifying complaints. (iii) Contractor shall submit the details of rectification /non retification of complaints to Engineer-in-Charge after attending complaint.

Excavation in trenches not exceeding 1.5 metre wide and not exceeding 1.5 metre depth and getting out in hard/dense soil for taking out / laying of GI pipe all as directed by Engineer-in-charge..

Returning and filling including spreading, leveling, watering and well remming in layer n-exc 25 mm thick in soft/loose soil complete all as specified and as directed.

Removing excavated soil to a distance not exceeding 50 mtrs and depositing where directed at a level not exceeding 1.5 Mtr above the starting point all as specified and directed.

M & L for taking up or down from trenches old CI/GI Pipe including fittings and branch connections if any for cleaning and refixing or removal to stores for further disposal of complete all as specified and directed for the following size:-

200 mm dia

150mm dia

100mm dia

80mm dia

50mm dia

40mm dia

25mm dia

20mm dia

15mm dia

M & L for Re-fixing old serviceable steel tubing obtained from Item No 4 and connections in new or old position of size in walls, ceiling, floors, / trenches complete all as specified and directed for the following size:-

50mm dia

40mm dia

25mm dia

20mm dia

15mm dia

Supply and lay GI pipe of medium grade including fittings such as bends, reducer, elbows, union etc in trenches complete all as specified and directed for the following size :-

100 mm dia

80mm dia

50mm dia

40mm dia

25mm dia .

20mm dia

15mm dia

Supply and lay GI pipe of medium grade including fittings such as bends, reducer, elbows, union, clips, wall hooks, wooden plugs etc in wall/floor/sump/wells. including cutting through wall/floor/sump/wells and making good the distrubed surfaces to match with existing complete all as specified and directed for the following size :-

100 mm dia

80mm dia

50mm dia

40mm dia

25mm dia .

20mm dia

15mm dia

Supply and laying in trenches of Ductile Iron spigot and socket pipes as per IS:8329/2000 Class K7 including EPDM rubber gasket suitable for and including push on rubber gasket joint with inside cement mortar lining and outside Zinc bitumen coating complete all as specified and directed.for the following size :- Make :- Electrosteel/Tata /Jindal

200 mm dia

150mm dia

100mm dia

80mm dia

M & L cast iron fittings ISI marked such as bends (any type, radius any angle) tapers any type (straight or bend), increasing, decreasing or double socket etc) Tee pieces single branch, double branch,cross(all sockets and socket and spigot) collars, caps and plugs tail piece confirming to IS 1538/1993 complete all as specified and directed.

M & L run lead joint including all necessory jointing materials like lead spunyarn etc (old recovered lead from leaking joints shall not be re used) for the CI pipe complete all as specified and directed for the following size :-

200mm dia

150mm dia

100mm dia

80mm dia

Supply and fix in repairs Gun metal globe or gate valves, with iron wheel head, screwed both ends for iron pipe complete all as specified and directed for the following size:- . Make:- Leader/Zoloto/Vir

50mm dia

40mm dia

25mm dia

20mm dia

15mm dia

Supply and fix in repairs CI Non Return valve conforming to IS-5312 Part - I ,PN 1.6 ,having flanged end joints with brass seating including jointing materials such as 3mm rubber gasket 01 No, 10mm dia nut & bolts and washers complete all as directed for the following size :-.Make :- Kirloskar/Upadhaya/Leader/ Kartar

150mm dia

100mm dia

80mm dia

Supply and fix Gun metal Non Return Sluice Valve of size 50mm bore ISI marked suitable for screwing in GI pipes fixed all as specified and as directed.

Supply and fixing in replacement CI sluice valve confirming to IS -14846 PN-1.0 non raising type both ends flanged with SS spindle including jointing materials such as nuts, bolts washers and 3mm rubber gasket 02 Nos complete all as specified and directed for the following size. Make :- Kirloskar/Leader/Kartar

300 mm dia

150mm dia

100mm dia

80mm dia

Cutting of existing road/ floor/ plinth/drain of any description of width and depth not exeeding 0.45 metre for taking out /laying of CI/DI/GI pipe line including necessary earth work excavation and making good the distrubed surface with PCC 1:3:6 type C1 using 20mm graded stone aggregate complete all as specified.

Supply and fix in repair galvanised iron bolt,nut and washers of any dia and length as required at site all as specified and as directed.

Plain cement concrete 1:3:6 type C1 using 20mm graded stone aggregate as in foundation for valve chamber etc all as specified and as directed.

Brick work with sub class "B" bricks using old size bricks straight or curved on plan exc 6m mean radius,built in cement mortor 1:6 as in valve chamber complete all as specified and as directed.

Rendering 10mm thick on fair faces of bricks(inside of valve chamber) in cement mortor 1:4 finished the surface even and smooth without using extra cement,complete all as specified and as directed.

Mild steel chamber cover made with mild steel sheet of 3.15mm thick for shutter angle iron frame including necessory welding and fixing arrangement and applying two coats of synthetic enamel paint over a coat of metal primer etc complete including taking down old MS sheet cover all as specified and as directed..

Surface dressing n.exc 15 cm deep and getting out in hard /dense soil around shallow well / pump houses inside the fencing and outside 3 meters wide around the edges of fencing all as specified and directed.

S&F in repair 12mm dia nylon rope or suitable size to match with the existing for hanging pumpsets/motors in well/sumps etc., complete all as specified and directed.

Supply only grafted cotton rope (gland packing rope ) complete all as specified and directed for thef following sizes:-

6 mm dia

8 mm dia

10 mm dia

12 mm dia

M&L required for attending pump set /motor complaints of any type , finding of fault/ defect and repairing the same including required repairing materials and making pump sets/motor functional complete all as specified and directed. Note :- Quoted rate shall be inclusive for following provisions:- (i) Contractor shall deploy one Motor Mechanic and one helper for collect the complaints from MES complaint cell as and when intimated. (ii) Tools,minor spares such as washer,nuts,white lead etc as required for rectifying complaints. (iii) Contractor shall submit the details of rectification /non retification of complaints to JE/Engineer-in-Charge after attending the complaint.

M&L for repairing centrifugal split type/monoblock pump set by replacing of the relevant spares taken and including packing, refixing and testing of motor of capacity 12.5/ 15 HP complete etc., all as specified and directed. Note: Spare parts/ accessories like shaft, bush, bearings, gland etc., shall be measured and paid separately under relevant items of this schedule.Location : Old Booster, Main sewage P/H Make : Kirloskar

Supply only the following spares suitable for 15 HP capacity centrifugal split type/monoblock pump set

Impeller

Pump Shaft

Shaft Sleeve

Bearing

Gland coller complete with nut and bolts

M&L for repairing centrifugal pump set by replacing of the relevant spares taken and including packing, refixing and testing of motor of capacity 7.5/5 HP complete etc., all as specified and directed Note: Spare parts/ accessories like shaft, bush, bearings, gland etc., shall be measured and paid separately under relevant items of this schedule.Location :Old Booster / NP/ 9 P&S P/H Make : Kirloskar

Supply only the following spares suitable for 15 HP capacity centrifugal split type/monoblock pump set

Impeller

Pump Shaft

Shaft Sleeve

Bearing

Gland coller complete with nut and bolts

M&L for taking out the submersible pump set/ monoblock submersible pump sets from its position and carrying out repairs after proper cleaning of impellers & shafts, including packing, refixing in position and testing of motor of capacity 5/7.5 HP complete etc., all as specified and directed.(Make:- Kirloskar ) Location: Shallow wells Note: Spare parts/ accessories like impeller, shaft, bush and sleeve etc., shall be measured and paid separately under relevant items of this schedule.

Supply only the following spares of 5/7.5 HP capacity submersible pump set/ monoblock submersible pump set

Impeller with bowl

Pump Shaft

Shaft sleeve

Taking out the submersible pump set/ monoblock submersible pump sets from its position and carrying out repairs after proper cleaning of impellers & shafts, including packing, refixing in position and testing of motor of capacity 10 HP complete etc., all as specified and directed.(Make:- Kirloskar ) Location: Shallow well. Note: Spare parts/ accessories like impeller, shaft, bush and sleeve etc., shall be measured and paid separately under relevant items of this schedule.

Supply only the following spares suitable for 10 HP capacity submersible pump set/ monoblock submersible pump sets

Impeller with bowl

Pump Shaft

Shaft sleeve

M&L for stripping out squirrel cage, induction motor, 3 phase 415 volts AC 50 c/s starter and rotor cleaning up internally and externally including removing old burnt copper wire, worn out bearing and rewiring/ rewinding with new copper wire, including necessary transportation workshop and bring back to the installation and assembling, testing and commissioning of motor complete etc., all as specified and directed for the following capacity .

15 HP capacity

12.5 HP capacity

7.5 HP capacity

5 HP capacity

Taking up defective submersible pump set/ Monoblock submersible pump sets 3 phase,AC,415 volts, 50 c/s from shallow well and disconnecting cable, GI delivery pipe etc,taking out/transport to work shop, dismantling and rewinding submersible pump motor with appropriate size of copper wire , reassembling,erecting back in position, cable jointing, testing and commissioning of motor complete all as specified and directed for the following capacity:-( Location: Shallow wells )

5 HP capacity

7.5 HP capacity

10 HP capacity

Taking up unserviceable centrifugal non clog submerciable sewage pump set 40HP from sewage sump by bail out the water, disconnecting ,declamping, transport to authorised work shop as directed by Engineer-in- charge and re-installation in the sump,testing complete including replacement of Gasket,cable end cap, water/oil Seal,oil, painting and service charges etc.,lathe work as required complete and testing all as directed. (Make:-Kishore ) . Note: Spare parts/ accessories like Winding charges, bearings, Seal, Sensors, Shaft etc., shall be measured and paid separately under relevant items of this schedule.

Supply only the following spares of centrifugal non clog submerciable sewage pump set40HP capacity:-

Winding charges

Bearing upper and lower.

M-seal lower and upper

Temperature Sensor

Moisture sensor

Rotor Shaft

Repalcement Insulating oil as per the manufacturer recommended grade

S&F contactor for Star Delta starter 440 volts, 50 Hz, 3 phase, AC, suitable for following HP of induction motors all as specified and directed.

upto16 Amps suitable for 7.5 / 10 HP

upto 25 Amps suitable for 12.5/15 HP

upto 80 Amps suitable for 25/ 40 HP

Supply and fix DOL starter suitable for submersible pump 3 phase AC motor upto 5HP,3Phase,415 volt all as specified and as directed..Make : L&T / BCH/ SIEMENS

Supply and fix automatic star delta starter suitable for pump set, 3 phase AC motor capacity 7.5 to 15HP,built in overload relay,single phase preventor,AC3,4pole contactor,415 volt in heavy duty deep drawn sheet metal box all as specified and as directed. Make : L&T / BCH/ SIEMENS

Supply and fix electronic overload relay suitable for submersible pump as specified and directed.

S&F No volt coil, 440 volt ,suitable for star delta starters up 7.5 to10 HP capacity

S&F No volt coil suitable for DOL starter up to 5 HP capacity, 440 volts.

S&F in fix single phase preventer Make: Minilec

Supply and fix in repairs MCB TPN, capacity 40/63 Amps, 10 KA suitable for LT panel board including dismantling existing unserviceable MCB complete all as specied and directed.

Supply and fix following capacity of MCCB TPN , 415 volt,fixed in repair on existing panel board including dismantling existing unserviceable MCCB complete all as specied and directed.

(a) 63 Amp ,25 KA

(b) 100 Amp.25 KA

Taking out defective flat PVC insulated, submersible cable,3 core, 4 Sqmm multistrand copper cable from submersible pump set including supply and providing new cable of same size, jointing with jointing materials, testing and commissioning etc., complete all as specified.

Repair to existing pump houses LT panel board by replacing following unserviceable items all as specified and directed.:-

Voltmeter (squar type) of size 96 x 96mm, 0-500 V, AC, 50 c/s

Ammeter CT operated of size 96 x 96 mm, 0-100 V, AC, 50 c/s

Current transformer of ratio 100 / 5 Amps, VA burden - 15, 415 volts

Current transformer of ratio 60 / 5 Amps, VA burden - 15, 415 volts

Indication lamp Red/ Yellow/ Blue with base including dismantling of unserviceable old items complete.

Preparing surface of 3 phase ,415 volts,50 c/s pump sets of following capacity and painting with two coats of synthetic enamel paint all as specified and directed.

40 HP capacity

15 HP capacity

12.5 HP capacity

7.5 HP capacity

5 HP capacity

Preparing surface of Pump sets panel board of following pump houses and painting with two coats of synthetic enamel paint including marking on sticker letters for all panel eqipments details etc all as specified and directed.

Old booster P/H

New booster P/H

Main sewage P/H

143 sewage P/H

Narendra place P/H

Shallow wells

9 P&S unit P/H

M &L for wiring for circuit /sub main wiring along with earth wire with the following sizes of HRFR, PVC insulated unsheathed ,industrial grade copper conductor ,single core ,flexible cables,1100 volts conforming to IS-694 drawn in existing cable ducts /racke/pipes in surface /recessed as required for connections from panel to pump motors including taking down /dismantling of existing unserviceable /burnt copper conductora all as specified and as directed .

M&L for Fabrication,install,commissioning and testing of LT cubical motor starter panel board of size not lessthan 1.0x0.75x0.30mtr, three phase 4-wire systems,out door type, dust and vermin proof, made out of CRCA sheet 3.0 mm thickness, powder coated, double door,with locking arrangements,mounted on ISMC 75 on PCC plate form including control wiring complete , necessary PCC 1:3:6 staging for panel etc including taking down existing unserviceable panel complete all as directed to suitable to accommodate the following:- ( Locations:- No 1 Shallow well at Madambakkam) (a) MCCB 63 Amps, 10 KA, 4 pole, 415 volts with thermal based release - 01No (incoming) (b) MCB 32 Amps,TPN pole,415 volts - 02 Nos.(for starters) (c) Multi functional digital meter for voltage, ampere, frequency etc,3phase,4 wire system with CTs - 01 Set (d) Indicating lamps LED type R,Y,B and main ON,over load trip etc.-06 Nos (e) Copper bus bar of capacity 200 Amps size 40 x 3 mm -04 Nos (f) Star delta starter for submersible pumps upto 32Amps rating.-02 set (g) Single phase preventor -02 Each (h) Over load relay -02 Each (j) Timer set -02 Each (k) Push button and rear connections for ON/OFF -02 Each

M&L for Fabrication,install,commissioning and testing of LT cubical motor starter panel board of size not lessthan 1.8 (H)x1.2(L)x0.45(B) mtr, three phase 4-wire systems,Indoor type, dust and vermin proof, made out of CRCA sheet 3.0 mm thickness, powder coated, double door,with locking arrangements,mounted on ISMC 75 on PCC plate form including control wiring complete , necessary PCC 1:3:6 staging for panel etc including taking down existing unserviceable panel complete all as directed to suitable to accommodate the following:- (Location: 9 P&S Unit pump house) (a) MCCB 63 Amps, 10 KA, 4 pole, 415 volts with thermal based release - 01No (incoming) (b) MCB 32 Amps,TPN pole,415 volts - 02 Nos.(for starters) (c) MCB 16 Amps,TPN pole,415 volts - 02 Nos.(for starters) (d) Multi functional digital meter for voltage, ampere, frequency etc,3phase,4 wire system with CTs - 01 Set (d) Indicating lamps LED type R,Y,B and main ON,over load trip etc.-06 Nos (e) Copper bus bar of capacity 200 Amps size 40 x 3 mm -04 Nos (f) Star delta starter for centrifugal mono block pumpset (7.5 hp) upto 32Amps rating.-02 Nos (g) DOL starter suitable for Mono block, 3 phase AC motor upto 2HP,3Phase,415 volt -02 Nos. (g) Single phase preventor -04 Each (h) Over load relay -04 Each (j) Timer set -04 Each (k) Push button and rear connections for ON/OFF -04 Each

M/L for earthing for pole complete with galvanized steel earth plate electrode 600 X 600 X 6mm thick buried directly in ground (earth pit not less than 2.25m deep below normal ground level) with top edge of the plate not less than 1.5M below normal ground level connected to GI earth lead strip 32 X 6 mm as earth lead by means of nuts, bolts, check nuts and washer of GI steel and connecting to testing point including provision of test point and all as shown in electrical plate No. 5 of SSR Pt I (2009). The quoted rate is inclusive of necessary earth work and PCC chamber in type CI (1:2:4) with 8 mm CTD bar reinforcement both ways at 140 mm centre to centre complete all as directed

Bailing out water from under ground sump, removing silt, sludge, mud, moss, efflorescent salts and algae growth etc., using steel wire brushes/ cleaning tools and washing all internal surfaces using cleaning materials like bleaching powder or other cleaning liquids and draining out the waste water completely including one coat of white washing all inside wall surfaces and roof including writing letter in bold with white paint of size not exceeding 10 cms height on black back ground with details such as sump capacity, date of cleaning and due date of next cleaning etc., for the following capacity all as specified and directed :-

Sump of capacity 2 Lakh gallons

Sump of capacity 60000 gallons

Sump of capacity 50,000 gallons

Sump of capacity 30,000 gallons

Sump of capacity 10,000 gallons

Sump of capacity 6,000 gallons

Bailing out water from over head reservoir, removing silt, sludge, mud, moss, efflorescent salts and algae growth etc., using steel wire brushes/ cleaning tools and washing all internal surfaces using cleaning materials like bleaching powder or other cleaning liquids and draining out the waste water completely including one coat of white washing all inside wall surfaces and roof including writing letter in bold with white paint of size not exceeding 10 cms height on black back ground with details such as OHR capacity, date of cleaning and due date of next cleaning etc., for the following capacity all as specified and directed:- Note : Climbing / reaching to sump of RCC OH reservoir by necessary arrangement shall be the contractor responsibility incase of stell steps unserviceable in conditions .

Over Head Reservoir of capacity 1 Lakh gallons

Over Head Reservoir of capacity 50000 gallons

Over Head Reservoir of capacity 40000 gallons

Over Head Reservoir of capacity 20000 gallons

Over Head Reservoir of capacity 15000 gallons

Over Head Reservoir of capacity 12000 gallons

Supply and fix nylon rope of size 8mm or suitable size in repairs at the over head for showing water level all as directed.

Repair and replacement of water level indicator on over head reservior of capacity from 50000 gallons to one lakh gallon by providing floating balls made out copper and iron weights,nylon ropes 8mm dia,wooden board with level marking,painting including fixing on RCC walls/colomns complete all as specified and directed.

All asper item No.58 above but capacity of over head reservior from 15000 gallon to 40000 gallons.

M&L for Collecting sample of water from shallow well/Pump houses as directed by Engineer-in-charge and carry out all tests at M/s.king Institute, Guindy or NABL approved Laboratories/ Govt Institutions/ Central & State Govt water analysis laboratories for the suitability of water for drinking purpose and submission of analysis report all as directed.

M&L for water pressure gauge,scale 0 to 60kg/sq cm, white aluminium 200mm dial dia,black steel case,bottom connection with brass socket for 15mm pipe including taking down unserviceable meters all as specified and as directed by Engineer in charge.

Material and labour for changing and washing of activated carbon media and replacement of new sand of pressure filter 7 feet dia of capacity 10000 GPH at swimming pool asper manufacturers design including testing complete all as specified and directed.

Construction of valve pit with bricks full brick thick of the 0.9x0.9x0.9 mtr sizes on 100 mm thick PCC foundation in 1:3:6 over 75 mm thick hard core, including 15 mm thick CM (1:4) both internally and externally plastering and 3.0mm thick MS sheet cover and angle iron frame of size 40x40x6mm with locking arrangement including two coats of synthetic enamel paint over a coat of primer including angle iron frame necessary excavation and earth work etc complete all as specified and as directed.

Construction of valve pit with bricks full brick thick of the 1.2x1.2x1.2mtr sizes on 100 mm thick PCC foundation in 1:3:6 over 75 mm thick hard core, including 15 mm thick CM (1:4) both internally and externally plastering and 3.0mm thick MS sheet cover and angle iron frame of size 40x40x6mm with locking arrangement including two coats of synthetic enamel paint over a coat of primer including angle iron frame necessary excavation and earth work etc complete all as specified and as directed.

Construction of valve pit with bricks full brick thick of the 0.6x0.6x0.6 mtr sizes on 100 mm thick PCC foundation in 1:3:6 over 75 mm thick hard core, including 15 mm thick CM (1:4) both internally and externally plastering and 3.0mm thick MS sheet cover and angle iron frame of size 40x40x6mm with locking arrangement including two coats of synthetic enamel paint over a coat of primer including angle iron frame necessary excavation and earth work etc complete all as specified and as directed.

M&L for riddled earth filling in trenches above and below the cable as in cable protection. Note :- Punned thickness shall be measured and paid.

Supply and lay common burnt clay sub class 'B' bricks for cable cover all as specified and directed

Supply and Laying LT UG cable 1100 Volts grade XLPE insulated PVC sheathed amoured, heavy duty, in trenches/walls/poles/passing through pipes with multistranded aluminium conductor including lugs/thimble/ferules connection, testing and commissioning complete all as specified of 70sqmm 3.5 core cable Note: Earth work, excavation sand cusioning, bricks for protection, GI pipe etc shall be measured separately under relevant items of this schedule

S&F in replacement of Wall mounted light fitting LED batten, extruded aluminium heat sink provided for effcient heat dissipation & integrated electronic driver with 20 W LED (4 ft) lamp including disconecting, removing, and connecting into electric circuit and testing.at various water supply installations . ( Make - Havells,Cat Part No : LUMILINENEOBS20WLED865SPCWH or equivallent)

Sri Sankar Enterprises (BID ID -3126591)

NAVEEN ENTERPRIESES (BID ID -3127370)

OM Muruga Enterprises (BID ID -3135579)

M/S CLIMATE CONTROLS (BID ID -3134790)

Banyan Engineers and Contractors (BID ID -3134797)

rc enterprises (BID ID -3135067)