REPAIR/MAINT OF STP AND SEWAGE INSTALLATION, CI/GI/DI/PIPE LINE AND ALLIED WORKS AT FORT WILLIAM UNDER GE (FW) KOLKATA

Amount

M&L Cleaning of 1.24 MLD RCC semi underground aeration tank size 8.5m x 5.6m x 3.5m along with fine bar screen chamber, grit chamber and connected system by blocking the inlet / outlet flow from manholes, lifting the excess semi-solid sewage water out of the sump, removing the entire deposited sludge, mud, silt etc, scrapping the internal wall / floor with wire brush (to remove deposited scales, mud etc from the walls / floors by using suitable tools and plants, manually from the bottom of the tank) , and removing the same at a distance n.exc 50m from site where directed, opening the blocked manholes etc before normalising flow of sewer complete all as directed by the Engineer-in Charge.

M&L Cleaning of 1.24 MLD RCC semi underground primary clarifier tanks of diameter 6.5 mtr and height 3mtr along with connected system by blocking the inlet / outlet flow lines, lifting the excess semi-solid sewage water out of the sump, removing the entire deposited sludge, mud, silt etc, scrapping the internal wall / floor with wire brush (to remove deposited scales, mud etc from the walls / floors by using suitable tools and plants, manually from the bottom of the tank) , and removing the same at a distance n.exc 50m from site where directed, opening the blocked manholes etc before normalising flow of sewer complete all as directed by the Engineer-in Charge.

M&L Cleaning of 1.24 MLD RCC semi underground secondary clarifier tanks of diameter 7.5mtr and height 3.5 mtr along with connected system by blocking the inlet / outlet flow lines, lifting the excess semi-solid sewage water out of the sump, removing the entire deposited sludge, mud, silt etc, scrapping the internal wall / floor with wire brush (to remove deposited scales, mud etc from the walls / floors by using suitable tools and plants, manually from the bottom of the tank) , and removing the same at a distance n.exc 50m from site where directed, opening the blocked manholes etc before normalising flow of sewer complete all as directed by the Engineer-in Charge.

M&L Cleaning of 1.24 MLD RCC sludge drying beds having 6 Nos bed of size 3.5mtr x 3.5mtr x 1.75mtr along with connected system by blocking the inlet / outlet flow lines, lifting the excess semi-solid sewage water out of the sump, removing the entire deposited sludge, mud, silt etc, scrapping the internal wall / floor with wire brush (to remove deposited scales, mud etc from the walls / floors by using suitable tools and plants, manually from the bottom of the tank) , and removing the same at a distance n.exc 50m from site where directed, opening the blocked manholes etc before normalising flow of sewer complete all as directed by the Engineer-in Charge.

M&L Cleaning of 0.240 MLD RCC construction equilization tank of size 5.0m x 4.0m x 2.0m (Inner dimention) along with fine bar screen chamber, grit chamber and connected system by blocking the inlet / outlet flow from manholes, lifting the excess semi-solid sewage water out of the sump, removing the entire deposited sludge, mud, silt etc, scrapping the internal wall / floor with wire brush (to remove deposited scales, mud etc from the walls / floors by using suitable tools and plants, manually from the bottom of the tank) , and removing the same at a distance n.exc 50m from site where directed, opening the blocked manholes etc before normalising flow of sewer complete all as directed by the Engineer-in Charge.

M&L Cleaning of 0..240 MLD RCC construction clarified water tank of 8.5m x 4.0m x 2.0m (inner dimention) and lifting the excess semi-solid sewage water out of the sump, removing the entire deposited sludge, mud, silt etc, scrapping the internal wall / floor with wire brush (to remove deposited scales, mud etc from the walls / floors by using suitable tools and plants, manually from the bottom of the tank) , and removing the same at a distance n.exc 50m from site where directed, opening the blocked manholes etc before normalising flow of sewer complete all as directed by the Engineer-in Charge.

M&L Cleaning of 0..240 MLD RCC contruction FMR (fludised media reactor) with tube setter / lamela setter tank ( MBBR and tertiary system) of size 10.5m x 3.2m x 3.0m (Inner dimention) and lifting the excess semi-solid sewage water out of the sump, removing the entire deposited sludge, mud, silt etc, scrapping the internal wall / floor with wire brush (to remove deposited scales, mud etc from the walls / floors by using suitable tools and plants, manually from the bottom of the tank) , and removing the same at a distance n.exc 50m from site where directed, opening the blocked manholes etc before normalising flow of sewer complete all as directed by the Engineer-in Charge.

M&L Cleaning of 0.240 MLD RCC construction sludge Holding tank of size 3.0m x 2.0m x1.8m (Inner diamention) and lifting the excess semi-solid sewage water out of the sump, removing the entire deposited sludge, mud, silt etc, scrapping the internal wall / floor with wire brush (to remove deposited scales, mud etc from the walls / floors by using suitable tools and plants, manually from the bottom of the tank) , and removing the same at a distance n.exc 50m from site where directed, opening the blocked manholes etc before normalising flow of sewer complete all as directed by the Engineer-in Charge.

S&F in repairs MCB TPN 'C' series,32 Amps, incl taking down existing unserviceable MCB complete all as specified and directed. (Make- C&S Ref No CSMBS3C32N or Equivalent).

S&F in repairs MCCB 4 pole, 415 volts, adjustable type, 250 Amps with breaking capacity 35 KA, front operated with extension rod fixing on existing LT panel board, incl taking down existing MCCB complete all as specified and directed. (Make- C&S Ref No CSE2N250ATM4P-* or Equivalent, CM98403OOQOOG / LEGRAND, Cat No: 4202 49 / HAVELLS, Cat No: IHB2HEMF0250 or equivalent model in INDO ASIAN (OPTI POWER)/ SCHNEIDER / ABB / C&S)

S&F submersible pump DOL starter in sheet enclosure type MU-G6, 415 volts, 3 ph, 6 HP and relay rangig from 9 Amp to 14 Amp complete with single phase priventer, incl taking down existing starter complete all as specified and directed. Make- L&T Cat No : SS97756 or equivalent model in HAVELLS / BCH / C&S / INDO ASIAN / HPL

S&F FASD Submersible pump starter In sheet enclosure type MU-G15, 415 volts, 3 ph, 15 HP and relay rangig from 13 Amp to 22 Amp complete with single phase priventer incl taking down existing starter complete all as specified and directed. Make- L&T Cat No : CS94091 or equivalent model in HAVELLS / BCH / C&S / INDO ASIAN / HPL

S&F DOL motor starter In sheet enclosure type MU-2P, 415 volts, 3 ph, 2 HP and relay rangig 9-14 Amp complete with single phase priventer incl taking down existing starter complete all as specified and directed. Make- L&T Cat No : CS90319KOAO or equivalent model in HAVELLS / BCH / C&S / INDO ASIAN / HPL

S&F in repairs DOL motor starter In sheet steel enclosure type MU-2P, 415 volts, 3 ph, 3 HP and relay rangig 13-22 Amp complete with single phase priventer incl taking down xisting starter complete all as specified and directed. Make- L&T Cat No : CS90319KODO, or equivalent model in HAVELLS / BCH / C&S / INDO ASIAN / HPL

S&F DOL motor starter In sheet steel enclosure type ML-2, 415 volts, 3 ph, 20 HP and relay rangig 13-22 Amp complete with single phase priventer incl taking down existing starter complete all as specified and directed. Make- L&T Cat No : SS90702 or equivalent model in HAVELLS / BCH / C&S / INDO ASIAN / HPL

Disconnecting of electric connection, taking out slow speed centrifugal motor of 20 HP from sewage aereator, transporting to workshop rewinding of the motor with suitable gauge of super enamelled insulated copper wire, reassembling the motor, transporting upto site, re-installation and testing of the assembly as directed including replacement of DE/NDE bearings - 02 Nos complete as directed by the Engineer-in-Charge. ( Make of pump: Kirloskar, Model No- HBC303)

Disconnecting of electric connection, taking out horizontal centrifugal type nonclogging self priming pumps of capacity 1 HP from sewage treatment plant transporting to workshop rewinding of the motor with suitable gauge of super enamelled insulated copper wire, reassembling the motor, transporting upto site, re-installation and testing of the assembly as directed including replacement of DE/NDE bearings - 02 Nos complete as directed by the Engineer-in-Charge. Make of pump: Kirloskar,Model No- BPHA384/3D

Disconnecting of electric connection, taking out horizontal centrifugal type nonclogging self priming pumps (Make - Kirloskar) of capacity 5 HP from sewage treatment plant transporting to workshop rewinding of the motor with suitable gauge of super enamelled insulated copper wire, reassembling the motor, transporting upto site, re-installation and testing of the assy as directed including replacement of DE/NDE bearings - 02 Nos complete as directed by the Engineer-in-Charge. Make of pump: Kirloskar, Model No- BPHA384/3D

Servicing and lubrication of slow speed aeration mechamisum fixed with surface 20 HP motor (55 to 70 RPM) Aerator motor's gear system with MS drift tube of vertically flange mounted planatory geared motor of ratio (24:1) with 1450 RPM of motor speed and painting with two coat of synthetic enamel paint and topping of transformer oil complete all as specified and as directed by Engr-in-Charge.

Disconnect and remove existing primary / secondary clarifier mechanism along with related accessories from the position including drive unit from STP, transporting to workshop servicing the same and re-installation in same position after replacement of worn out following spares and painting with one coat of synthetic enameled paint including testing complete as directed by the Engineer-in-Charge. (Location: STP Plant) (i) 3.5 mtr long shaft - 1 No (ii) Oil Seal - 1 No (iii) Rubber coupling - 1 No

S&F Cast iron impeller, suitable for 5 HP capacity monoblock pump as in repair, complete all as directed by the Engineer-in-Charge. Make MBH,Model No- MBHN-10.

S&F Motor protection relay thermal over range having range from 8 to 44 A, suitable for aux supply 240 Volt incl taking down existing relay complete all as specified and as directed. Make : L&T, Cat No MPR303BE080/ MPR304BE160 or equivalent model in HAVELLS / BCH / C&S / INDO ASIAN / HPL

Supply & Fixing analog Ammeter 0-50 Amps 3 phase, AM50A, 415 volts, AC supply of size 96 mm x 96 mm, with current transformer of suitable ratio incl taking down existing meter & CT ccomplete all as specified and directed by Engr-in-charge. Make - C&S Ref No AM50A or equivalent

Supply & Fix analog Voltmeter 0-500 Volts 3 phase, VM 500 415 volts, AC supply of size 96 mm x 96 mm, incl taking down existing meter complete all as specified and directed by Engr-in-charge. Make - C&S Ref No VM5000 or equivalent

Supply and fix LED Indicating lamp RYB (Red, Yellow & blue set of three),415V, as in repairs, complete all as specified and as directed by Engr-in-charge Make C&S or equivalent.

S&F Electronic timer of type ST-100, suitable for 9- 30 seconds, 240V / 415 V including taking down existing timer complete all as specified and as directed. Make : L&T, Cat No SE 92002 / 92006 or equivalent model in HAVELLS / BCH / C&S / INDO ASIAN / AE / HPL.

S&F current transformer of ratio 30/5, incl taking down existing CTcomplete all as specified and as directed Make- L&T or equivalent.

S&F three pole power contractor of type MNX 40 suitable for 415 volts 63 amps, 3 way, 4 poles, incl taking down existing Contractor complete all as specified and as directed. (Make- L&T Cat No : CS 94190 or equivalent model in HAVELLS / BCH / C&S / INDO ASIAN / HPL)

S&F Rotary switch (ON-OFF), suitable for 415V 63 Amps, 3 way, 4 pole, as in repairs, complete all as specified and as directed Make- L&T or equivalent.

S&F Moisture controller, suitable for 415 volts 3 phase 50 Hz AC, as in repairs, incl taking down existing controller complete all as specified and as directed. Make- Minilec, Model No-WLC D1 or equivalent model in HAVELLS / BCH / C&S / INDO ASIAN / AE / HPL / L&T

Supply and fix bi-metal overload relays ranging from 14 Amp to 23 Amp, as in repairs, Make L&T Cat No : CS 9421100 DO or equivelent as approved by GE, complete all as specified and directed by Engr -in -charge.

Supply and fix single phase preventer auto reset relay, 40 volts unbalance Make: Minilec Cat No VSP-3 or equivalent, as in repairs, complete all as specified and directed by Engr-In-Charge.

Suply and lay 19 mm thick LT synthetic mat of size 2.00 metre x 1.00 metre, ISI Marked, (Make as per sample, as approved by GE) placed in position at electric installation, complete all as directed by Engineer -In - Charge.

M&L Complete removal of old paint on surfaces of motor pump set of various capacity and applying two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer (using spray gun) including preparation of surfaces for any description/type with marking of SM/MES No of pump sets complete all as specified and as directed by the Engineer-in-Charge for the following capacities :-

Motor pump set of 3 HP capacity

Motor pump set of 5 HP capacity

Motor pump set of 7.5 HP capacity

Motor pump set of 10 HP capacity

Motor pump set of 20 HP capacity

S&F SS impeller suitable for sewage pump sets non clogging type make Greatind capacity 10 HP, as in repairs, incl taking down existing impeller complete all as specified and as directed. (Make- Greatind,Model No- GISE-10)

S&F Pump shaft SS type of sewage submersible pump sets (Vertical/ Horizental type) of various capacities, as in repairs, incl taking down existing shaft complete all as specified and as directed for the following :- (Make - MBH ,Model No-MBHN-5-15)

Pump shaft SS type of pump set of 2 HP capacity

Pump shaft SS type of pump set of 3 HP capacity

Pump shaft SS type of pump set of 5 HP capacity

Pump shaft SS type of pump set of 7.5 HP capacity

Pump shaft SS type of pump set of 10 HP capacity

S&F Mechanical lower and upper seals of sewage submersible pump sets of vairious capacities, non clog type and filling new cooling oil, as in repairs, incl taking down existing seal complete all as specified and as directed for the following:-(Make: MBH ,Model No-MBHN-5-15)

Mechanical lower and upper seal for pump set of 3 HP capacity

Mechanical lower and upper seal for pump set of 5 HP capacity

Mechanical lower and upper seal for pump set of 7.5 HP capacity

Mechanical lower and upper seal for pump set of 10 HP capacity

S&F Bearing including lubrication of all moving parts for submersible type sewage pump sets non clogging type of capacity 7.5 HP, as in repairs, incl taking down of existing bearing complete all as specified and as directed. (Make of pump : Greatind, Model No- GISE-10)

S&F Bearing including lubrication of all moving parts for submersible type sewage pump sets non clogging type of capacity 3 HP, as in repairs, incl taking down of existing bearing complete all as specified and as directed. (Make of pump : Kirloskar)

Testing of inlet and outlet sewage samples for all parameters as per Enivornmental Protection Act for effluent discharge into inlet surface water form Govt regconised or approved institute/test labs and submit the test report, complete all as directed by Engr-in- Charge. (Note : Testing of one sample each for inlet and outlet shall be considered as one job. Testing shall be carried out once in a month at regular interval)

Supply and fill new gravels and pebbles of size 1/4" to 2" dia size in layers as specified in the STP sludge drying bed complete including taking out old pebbles from bed and removing from site, all a per specified and directed by Engr- in- charge.

Supply and fill coarse sand in layers as specified in the STP sludge drying bed including taking out old coarse sand from bed and removing at site complete all as directed by Engr- in- charge.

S&F in repair Add on auxilary contract block 2NO + 2NC incl necessary elect connections including taking down existing contact block complete all as specified and as directed. (Make : L&T, Cat No CS94114 or equivalent model in HAVELLS / BCH / C&S / INDO ASIAN / AE / HPL)

S&F in repair Add on auxilary contract block 1NO + 1NC incl necessary elect connections incl taking down existing block complete all as specified and as directed. (Make : L & T Cat No CS94118 or equivalent model in HAVELLS / BCH / C&S / INDO ASIAN / AE / HPL)

S&F in repair Three pole power contactor of type MNX 25 suitable for 415 Volts, incl taking down complete all as specified and as directed. (Make : L&T, Cat No CS 94110 or equivalent model in HAVELLS / BCH / C&S / INDO ASIAN / AE / HPL)

S&F in repair Three pole power contactor of type MNX 12 suitable for 415 Volts,in cl taking down complete all as specified and as directed. (Make : L&T, Cat No CS 94108 or equivalent model in HAVELLS / BCH / C&S / INDO ASIAN / AE / HPL)

S&F in repair Three pole power contactor of type ML-1.5 suitable for 415 Volts,in cl taking down complete all as specified and as directed. (Make : L&T, Cat No SS 991851 or equivalent model in HAVELLS / BCH / C&S / INDO ASIAN / AE / HPL)

S&F in reair Three pole power contactor of type ML-2 suitable for 415 Volts, 40 Amps incl taking down complete all as specified and as directed. (Make : L&T, Cat No SS 90701 or equivalent model in HAVELLS / BCH / C&S / INDO ASIAN / AE / HPL)

Taking up vertical non-clogging type sub-mersible pump set of capacity 10 HP from sewage sump after disconnecting electric connection, cleaning, reassembling, re-installationc, new refilling cooling oil as required and testing of the pump set including replacement of the following worn out parts complete as directed by the Engineer-in-Charge. (i) 'O' ring - 01 set (ii) Bearing - 02 Nos

Taking up vertical non-clogging type sub-mersible pump set of capacity 7.5 HP from sewage sump after disconnecting electric connection, cleaning, reassembling, re-installationc, new refilling cooling oil as required and testing of the pump set including replacement of the following worn out parts complete as directed by the Engineer-in-Charge. (i) 'O' ring - 01 set (ii) Bearing - 02 Nos

Taking up vertical non-clogging type sub-mersible pump set of capacity 5.0 HP from sewage sump after disconnecting electric connection, cleaning, reassembling, re-installationc, new refilling cooling oil as required and testing of the pump set including replacement of the following worn out parts complete as directed by the Engineer-in-Charge. (i) 'O' ring - 01 set (ii) Bearing - 02 Nos

Taking up vertical non-clogging type sub-mersible pump set of capacity 3.0 HP from sewage sump after disconnecting electric connection, cleaning, reassembling, re-installationc, new refilling cooling oil as required and testing of the pump set including replacement of the following worn out parts complete as directed by the Engineer-in-Charge. (i) 'O' ring - 01 set (ii) Bearing - 02 Nos

Taking out vertical non-clogging type sub-mersible pump set of capacity 10 HP from sewage sump with connected pipes after disconnecting electric connection, cleaning, washing the complete pump set, transporting to workshop for repair including dismantling of the pump set, rewinding of the motor with suitable gauge of super enamelled insulated copper wire, reassembling the pump set, refilling new cooling oil, transporting upto site, re-installation includung and testing of the pump set including replacement of the following worn out parts and testing of pump set complete as directed by the Engineer-in-Charge. (i) 'O' ring - 01 set (ii) Bearing - 02 Nos (Make of sewage pump : KSB, Model No-BPHA 384/3D)

Taking out vertical non-clogging type sub-mersible pump set of capacity 7.5 HP from sewage sump with connected pipes after disconnecting electric connection, cleaning, washing the complete pump set, transporting to workshop for repair including dismantling of the pump set, rewinding of the motor with suitable gauge of super enamelled insulated copper wire, reassembling the pump set, refilling new cooling oil, transporting upto site, re-installation includung and testing of the pump set including replacement of the following worn out parts and testing of pump set complete as directed by the Engineer-in-Charge. (i) 'O' ring - 01 set (ii) Bearing - 02 Nos (Make of sewage pump : KSB, Model No-BPHA 384/3D)

Taking up electric driven vertical non clogging type submersible pump set of capacity 5.0 HP from sewage sump with connected pipes, transporting to workshop for repair including serving of pump set and motor, re-winding of the motor with suitable gauge of super enamelled copper wire, varnishing, drying, heating including gressing, oiling reassembling, transporting upto site, re-installaion and testing of the pump aset including replacement of following worn-out parts as directed by the Engineer-in-Charge. (i) 'O' ring - 01 set (ii) Bearing - 02 Nos (Make of sewage pump : Kirloskar)

Taking up electric driven vertical non clogging type submersible pump set of capacity 3.0 HP from sewage sump with connected pipes, transporting to workshop for repair including serving of pump set and motor, re-winding of the motor with suitable gauge of super enamelled copper wire, varnishing, drying, heating including gressing, oiling reassembling, transporting upto site, re-installaion and testing of the pump aset including replacement of following worn-out parts as directed by the Engineer-in-Charge. (i) 'O' ring - 01 set (ii) Bearing - 02 Nos (Make of sewage pump : Kirloskar)

Taking up /down CI/DI water mains and connections/fittings of any type from trenches /walls/floors/(or any other location) for replacement /reuse in old/new location/diversion by burning out /removing of lead joints/tyton joints/rubber gasket joint complete all as specified and directed for the following size of pipes :-

80 mm bore

100 mm bore

150 mm bore

200 mm bore

Note for Item No58.01 to 58.04: Necessary earthwork, if any shall be measured and paid separately under relevant item.

Relaying of the following size CI/DI water mains after thoroughly cleaning, with new fittings fixed to wall/ceiling/floor or laid in trenches complete all as specified and directed for the following size of pipes :-

80 mm bore

100 mm bore

150 mm bore

200 mm bore

Supply, laying and testing of cast iron pipes with spigot and socket ends centrifugally cast of Class 'A' in any length, laid in trenches complete all as specified and directed for following size of pipes :-

80 mm bore

100 mm bore

150 mm bore

200 mm bore

Supply, laying, connecting and testing of ductile iron pipe, spigot and socket ends, class K-7 in standard working length conforming to IS-8329 laid in trenches, complete all as specified and directed for the following size :-

M&L Jointing of flanged pipes and fittings with rubber or fibre board gasket , bolts, nuts, washer as in repair complete all as specified and directed for the following size of pipes :-

80 mm bore

100 mm bore

150 mm bore

200 mm bore

Burning out lead joints in position of cast iron pipes, fittings and re-making using old retrived lead complete all as specified and directed for following size of pipes :-

80mm bore

100mm bore

150mm bore

200mm bore

Note for Item No 63.01 to 63.04: In case, inadequate lead is retrieved from burning out, for remaking joints, additional lead required shall be measured and paid separately as "Supply only".

Supply only lead confirming to IS 782 complete all as specified and as directed.

M&L for Tyton rubber gasket joint for CI/DI water maind, including necessary earth cutting work, complete all as specified and directed for the following size of pipes :-

80 mm bore

100 mm bore

150 mm bore

200 mm bore

Cutting of existing CI/DI pipe to required length for insertion of Tee/Valves/Taking branch connection /addn/altn/etc complete all as specified and as directed by the Engineer- in -Charge for the following size of pipes :-

100 mm bore

150 mm bore

200mm bore

S&F CI butterfly valve, BS-5155 Gear operated with necessary rubber gaskets, nuts and bolts and washers of suitable size as in repair complete all as specified and directed for the following size of pipes :-

80mm bore

100mm bore

150mm bore

200mm bore

S&F Cast Iron Sluice valve of Class PN-1.6 long body type, heavy duty, ISI marked (IS 1538) flanged end with iron wheel and brass spindle including rubber gasket joints, nuts, bolts etc as in repair complete all as specified and directed for the following size of pipes :-

80 mm bore

100 mm bore

150 mm bore

200 mm bore

S&F in repair Cast Iron non-return valve, heavy duty, ISI marked (IS 5312) PN-1.6, flanged end including rubber gasket joints, nuts, bolts etc complete all as specified and directed for the following size of pipes :-

80 mm bore

100 mm bore

150 mm bore

S&F CI/DI bend upto 150 mm bore (any type, radius and angle) taper any type (straight, bend, increasing, decreasing or double socket etc) tee pieces, 'Y' junction, double branch, cross (all sockets or socket and spigot) collars, caps and plugs complete all as specified and as directed.

S&F CI/DI bend upto 200 to 300mm bore (any type, radius and angle) taper any type (straight, bend, increasing, decreasing or double socket etc) tee pieces, 'Y' junction, double branch, cross (all sockets or socket and spigot) collars, caps and plugs complete all as specified and as directed.

Taking up / down unserviceable / rust valve pit cover frame / support or platform etc and supply, fabrication and fixing of framed brackets, made of mild steel flat / angle iron (of required size), cut to shape and size, as in valve pit cover frame / support or platform including necessary bending / welding etc as required and applying two coats of black bituminous paint over a coat of red oxide zinc chrome primer complete all as directed by the Engr-in-Charge.

Supply and fixed Mild steel plates chequared Fe-410-W (Gde-E-250) quality-B 6mm thick as per site requirement as in repairs, complete all as specified and as directed by Engr-in-charge.

M&L Mild Steel Screw Bolts (machine made) 11mm to 15mm diameter of neck and length of bolt exc 5 Cm and not exc. 10 Cm with hexagonal or square heads at one end and screwed the other, or screwed both ends, each screwed end to be fitted with washers and one hexagonal or square nut, complete all as specified and as directed.

M&L Drilling and tapping cast iron water mains in (position) for branch connection, suitable for 20 mm bore pipe including provision of brass ferrule, complete all as directed by the Engineer-in-Charge.

Taking up or down GI Steel Water Tubing including Connections and Fittings, Segregating Serviceable Pipes & Fittings, Stacking properly at Site(s) and keep in Safe Custody for re-use, complete all as specified and as directed for the following size of pipes :-

100mm bore

80mm bore

50mm bore

40mm bore

25mm bore

20mm bore

15mm bore

Relaying/Re-fixing Galvanised Steel Tubing and Connections in New or Old Position (Serviceable Pipes and Fittings obtained from taking down item) after Cleaning both Inner and Outer Surfaces of Pipes by using of Wire Brush complete all as specified and as directed for the follwing size of pipes :-

100mm bore

80mm bore

50mm bore

40mm bore

25mm bore

20mm bore

15mm bore

Supply, Laying and testing Steel Water Tubing, Galvanised, ‘Medium Grade’ with all Fittings, laid in trenches or any other Situation, complete as all specified and as directed for the follwing size of pipes :-

100mm bore

80mm bore

50mm bore

40mm bore

25mm bore

20mm bore

15mm bore

S&F Cast Iron fully way Gate Valve with Iron Wheel Head , brass spindle screwed both Ends for Iron Pipes and fixed-in-repairs, complete all as specified and as directed for the following size of pipes :-.

50 mm dia (bore)

40 mm dia (bore)

25 mm dia (bore)

20 mm dia (bore)

S&F Gun metal gate valve as per IS : 778-84 Class-1 Pressure tested 2.4 Mpa with iron wheel head, screwed both ends for iron pipes or for unions as in repairs, complete as all specified and as directed for the following size of pipes :-

80 mm bore

50 mm bore

40 mm bore

25 mm bore

20 mm bore

Taking up existing unserviceable CI sluice valve for overhauling by replacing gasket, worn out nuts, bolts, washer, greasing complete including refixing in position complete all as directed by Engineer -in-charge for the following size of pipes :-

80 mm bore

100mm bore

150mm bore

200mm bore

Taking up existing CI sluice valve for overhauling by replacing gasket, brass spindle made from single brass cylindrical rod of suitable size , jam nuts, gate, worn out nuts, bolts, washer, greasing complete including refixing in position with testing complete all as directed by Engineer -in-charge for the following size of pipes :-

80 mm bore

100 mm bore

150 mm bore

200mm bore

S&F Rotational Moulded Polyethylene (HDPE) Water Storage Tank (Cylindrical Vertical with Closed Top), Black in Colour, Three Layered Construction, hoisted and fixed in Position all specified in MES Schedule Part-I including provision of 25mm x 100mm GI nippples with check nuts for inlet, outlet wash and overflow pipe including Lowering of old/ unserviceable Water Storage Tank of any description, complete all as specified and as directed for the following capacities :-

500 Litres

750 Litres

1000 Litres

Taking out suction pipe of 200mm bore with defective CI foot valve/stainer of 200 mm dia and replace foot valve (ISI marked) including necessary nut, bolt, washers and cutting threading of GI pipe if required and lowering in the sump complete all as directed by the Engr-in-Charge.

Taking out suction pipe of 150mm bore with defective CI foot valve/stainer of 150 mm dia and replace foot valve (ISI marked) including necessary nut, bolt, washers and cutting threading of GI pipe and lowering in the sump complete all as directed by the Engr-in-Charge.

Taking out suction pipe of 80mm bore with defective CI foot valve/stainer of 80 mm dia and replace foot valve (ISI marked) including necessary nut, bolt, washers and cutting threading of GI pipe and lowering in the sump complete all as directed by the Engr-in-Charge.

S&F in repair MCB TPN 63 Amps 'C' series inductive load with surge current incl taking down existing unserviceable BCM complete all as specified and as directed. Make : C&S: Ref No- CSMBS3C63N or LEGRAND / ABB / L&T / SCHNEIDER / INDO ASIAN (OPTI PRO) / HPL / HAVELLS / HAGER / BCH

M&L Stripping off existing starter panel and replacing of single phase preventer maching with motor of type VSP-3 and re-assembling of the panel including rectification of fault and safety device, adjustment of time etc complete all as directed by the Engr-in-charge. Make- Minilec Cat No- 7W 15473

S&F in repair Thermal Timer 415 Volt Gt 200 AC thermal type with coil incl taking down existing timer complete all as specified and as directed. Make : L&T Cat No- SS91270 or equivalent model in HAVELLS / BCH / C&S / INDO ASIAN / AE / HPL).

S&F in replacement of PVC insulated cable with Electrolytic Grade Annealed copper conductor 2,5 Sqmm, 3 core and multi-stranded flat for submersible pump motor, 1100 volt grade as per confirming to IS:694:1990 flat cable complete all as specified and as directed. Make - MESCAB or equivalent.

S&F in replacement of PVC insulated cable with Electrolytic Grade Annealed copper conductor 4.0 Sqmm, 3 core and multi-stranded flat for submersible pump motor, 1100 volt grade as per confirming to IS:694:1990 flat cable complete all as specified and as directed.

S&F in replacement of PVC insulated cable with Electrolytic Grade Annealed copper conductor 6.0 Sqmm, 3 core and multi-stranded flat for submersible pump motor, 1100 volt grade as per confirming to IS:694:1990 flat cable complete all as specified and as directed.

S&F SS impeller as existing design of the vertical / Horizental submersible sewage pump sets of capacity 3HP non clug type incl taking out old one, complete all as specified and as directed by Engr- in- charge.

S&F SS impeller as existing design of the vertical / Horizental submersible sewage pump sets of capacity 5HP non clug type incl taking out old one, complete all as specified and as directed by Engr- in- charge.

S&F SS impeller as existing design of the vertical / Horizental submersible sewage pump sets of capacity 7.5HP non clug type incl taking out old one, complete all as specified and as directed by Engr- in- charge.

S&F SS impeller as existing design of the vertical / Horizental submersible sewage pump sets of capacity 10HP non clug type, incl taking out old one complete all as specified and as directed by Engr- in- charge.

S&F in replacement of PVC insulated (unsheathed) single core multi strand cable with Electrilytic Grade Annealed copper conductor suitable up to 1100 volts grade confirming to IS : 694, complete all as specified and as directed by the Engr - in - Charge for the following sizes:-. Make:MESCAB or equivalent.

PVC insulated (unsheathed) single core multi strand cable with Electrilytic Grade Annealed copper conductor of sectional area 10 Sqmm. FR-90

PVC insulated (unsheathed) single core multi strand cable with Electrilytic Grade Annealed copper conductor of sectional area 6 Sqmm. FR-90

PVC insulated (unsheathed) single core multi strand cable with Electrilytic Grade Annealed copper conductor of sectional area 4 Sqmm. FR-90

PVC insulated (unsheathed) single core multi strand cable with Electrilytic Grade Annealed copper conductor of sectional area 2.5 Sqmm. FR-90

M&L cleaning of underground sewage sump by blocking the inlet/outlet flow from manholes, lifting the excess semi -solid sewage water out of the sump, removing the entire deposited sludge, mud, silt etc, scraping the internal wall / floor with wire brush to remove deposited scales, mud etc from the walls / floor by using suitable tools and plants, manually from the bottom of the tank and removing the same at a distance n.exc 50m from site where directed, opening the blocked manholes etc before normalising flow of sewer, complete all as specified and as directed for the following capacities :-

60,000 gallons capacity underground sewage sump, Location: Calcutta Gate sewage Sump

40,000 gallons capacity underground sewage sump. Location: Strand line & MAP Qtrs sewage sump

30,000 gallons capacity underground sewage sump. Location: George Gate & water Gate sewage sump

20,000 gallons Capacity underground sewage sump. Location: East Gate, Treasury Gate, Water Gate & Golf Course sewage sump

10,000 gallons capacity underground sewage sump. Location: Chowringhee Gate sewage sump

Supply and fixed in repairs of GI "Medium grade" colomn pipe 100 mm dia, 3 mtr long with suitable size both end MS flamge including rubber gasket, bolts, nuts and washers including taking out old one complete all as specified and as directed

M&L Complete removal of old paint on surfaces of CI/DI pipe line, including preparation of surfaces for any description / type and applying one coats of synthetic enamel paint (colour/shade as approved by Engr-in-Charge), complete all as specified and as directed for the following sizes :-

CI/DI pipe line 80 mm dia

CI/DI pipe line 100 mm dia.

CI/DI pipe line150 mm dia.

Excavation in trenches not exceeding 1.5 metre wide and not exceeding 1.5 metre in depth for foundation or for shafts, wells cesspits, manholes etc., not exceeding 10 sqm on plan and getting out in soft/loose soils, complete all as specified and directed.

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

Removing excavated material not exceeding 50 metre and deposited where directed at a level not exceeding 1.5 metre above the starting point in soil complete all as specified and directed.

Demolition of Cement Concrete (un-reinforced) in Ground Floors and Pavings not exc. 150mm thickness (above or below Ground Level), complete all as specified and as directed.

Demolition of Brick Work built in Cement Mortar including all Quoins, Arches, Pillars, etc. of any descriptions, complete all as specified and as directed.

M&L Plain Cement Concrete type C2 (1:3:6) using 40 mm graded aggregate) in foundations, filling and mass Concrete, etc., complete all as specified and as directed.

M&L Brick Work with Sub-Class ‘B’ fly-ash bricks (with Old Size Bricks), Straight or Curved on Plan exc. 6.0 Metre mean Radius, built in Cement Mortar 1:6, complete all as specified and as directed.

M&L 10 mm thick rendering in cement mortar (1:4) to brick or concrete wall surfaces, finished even and smooth without using extra cement, all as specified and as directed by the Engineer-in-Charge.

M&L Preparing new Surfaces of Walls and applying Two Coats of Cement Base Paint over a coat of alkali resistant primer complete all as specified and as directed.

Material and labour for complete removel of existing treatment on walls and applying two coat of cement based paint over a coat of alkali resisitant primer, complete all as specified and directed .

Material and labour for preparation of old decorated surfaces of wall and applying one coats of oil bound distemper, complete all as specified and as directed .

Material and labour for preparation of old decorated surfaces of ceiling and applying one coats of oil bound distemper, complete all as specified and as directed .

M&L preparing old steel surfaces of any description not otherwise described over 10 cm width or girth and applying one coat of synthetic enamel paint (first quality) complete all as specified and directed.

M&L complete removal of old paint on panel boards of any description, not other wise described, over 10 cm width or girth and aplying through spary painting two coats of synthetic enamel paint over a coat of primer, including preparation of surfaces complete all as specified and as directwed by the Engr-in - charge.

M&L for bore holes carefully under road crossing/hardstanding including necessary cutting etc, with manual anger or bookie method not exceeding 150 mm dia, for inserting of CI/GI pipe 100mm/ 150mm dia as per the site requirement complete all as directed. Note :- CI/GI pipe will be mesured and paid speritely and respective items.

Supply and mixing Cultured Bacteriological solution for starting up of the system to treatment of sewage water complete all as specified and as directed. Make- Bio-Clean, Micronz or equivalent.

SINHA ENTERPRISE

M/S SHRI P K ACHARJEE

RAJ ENTERPRISE

PODDAR SALES CORPORATION

Rounaq Enterprise

CONSTRUCTION AND MAINTENANCE ENGINEERING CORPORATION

DUTTA ENTERPRISE

MARUTI ENTERPRISES