REPAIR TO EXTERNAL WATER SUPPLY WORK INCLUDING VALVE CHAMBERS AND CLEANING OF OVERHEAD TANKS, UG SUMP, AT TRIANGULAR PARK INCLUDING MAP PH-II AND OTHER LOCATION AT HASTINGS UNDER GE (CENTRAL) KOLKATA

Amount

Excavation in trenches not exc. 1.5 Metre wide and not exc. 1.50 Metre in depth for foundation etc. or for shafts, wells, cess pits, manholes, pier holes etc. not exc. 10 Sqm on plan and not exc. 1.50 Metre in depth and getting out as in Soft/Loose Soil, complete all as specified and as directed.

Returning, Filling in, including Spreading, Levelling, Watering and Well Ramming in Layers not exc. 25 Cm as in Soft/Loose Soil, complete all as specified and as directed.

Removing excavated Material (Soil) not exc. 50.00 Metre and depositing where directed at a level not exc. 1.50 Metre above the starting point, complete all as specified and as directed.

Taking up / down the following size of water mains and connections/fittings of any type from trenches/ walls / floors (of any location) for replacement / re-use in old / new location/diversion by burning out/removing of lead joint/tyton joint/rubber gasket joint all as specified and directed by the Engr-in-Charge. (A) Bore Size 150mm Note: Necessary earthwork, if any , will be measured and paid separately under relevant items

All as per Item No 4.00 , Bore size 100 mm

All as per Item No 4.00, Bore size 80 mm

All as per Item No 4.00, Bore size 50 mm

All as per Item No 4.00 ,Bore size 40 mm

All as per Item No 4.00, Bore size 25 mm

All as per Item No 4.00, Bore size 20 mm

Supply and Laying Steel Water Tubing 80mm Bore (dia), Galvanised, ‘Medium Grade’ with all Fittings, laid in trenches or any other Situation, complete as all specified and as directed.

Supply and Laying Steel Water Tubing 50mm Bore (dia), Galvanised, ‘Medium Grade’ with all Fittings, laid in trenches or any other Situation, complete as all specified and as directed.

Supply and Laying Steel Water Tubing 40mm Bore (dia), Galvanised, ‘Medium Grade’ with all Fittings, laid in trenches or any other Situation, complete as all specified and as directed.

Supply and Laying Steel Water Tubing 25mm Bore (dia), Galvanised, ‘Medium Grade’ with all Fittings, laid in trenches or any other Situation, complete as all specified and as directed.

Supply and Laying Steel Water Tubing 20mm Bore (dia), Galvanised, ‘Medium Grade’ with all Fittings, laid in trenches or any other Situation, complete as all specified and as directed.

Supply and Laying Steel Water Tubing 50mm Bore (dia), Galvanised, ‘Medium Grade’ with all Fittings, fixed on Walls, Ceiling or laid in Floors or any other Situation, complete as all specified and as directed.

Supply and Laying Steel Water Tubing 40mm Bore (dia), Galvanised, ‘Medium Grade’ with all Fittings, fixed on Walls, Ceiling or laid in Floors or any other Situation, complete as all specified and as directed.

Supply and Laying Steel Water Tubing 25mm Bore (dia), Galvanised, ‘Medium Grade’ with all Fittings, fixed on Walls, Ceiling or laid in Floors or any other Situation, complete as all specified and as directed.

Supply and Laying Steel Water Tubing 20mm Bore (dia), Galvanised, ‘Medium Grade’ with all Fittings, fixed on Walls, Ceiling or laid in Floors or any other Situation, complete as all specified and as directed.

Relaying/Re-fixing Galvanised Steel Tubing 20mm Bore (dia) 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 including Provision of New GI Fittings (as ordered), complete all as specified and as directed.

Relaying/Re-fixing Galvanised Steel Tubing 25mm Bore (dia) 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 including Provision of New GI Fittings (as ordered), complete all as specified and as directed.

Relaying/Re-fixing Galvanised Steel Tubing 40mm Bore (dia) 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 including Provision of New GI Fittings (as ordered), complete all as specified and as directed.

Relaying/Re-fixing Galvanised Steel Tubing 50mm Bore (dia) 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 including Provision of New GI Fittings (as ordered), complete all as specified and as directed.

S&F MS pipe 150 mm dia medium grade and fixing the pipes with existing system by cutting welding including fixing of new flanged joints with rubber gasket incl nuts,bolts & washers as per site requirement with proper alignment complete all as specified and as directed.

S&F MS pipe 100 mm dia medium grade and fixing the pipes with existing system by cutting welding including fixing of new flanged joints with rubber gasket incl nuts,bolts & washers as per site requirement with proper alignment complete all as specified and as directed.

Supply, laying, connecting and testing of ductile iron pipe 150 DN with spigot and socket ends class K-9 in standard working length conforming to IS-8329-2000 laid in trenches as in repair complete all as specified and directed.

Supply, laying, connecting and testing of ductile iron pipe 100 DN with spigot and socket ends class K-9 in standard working length conforming to IS-8329-2000 laid in trenches as in repair complete all as specified and directed.

Labour only run lead joints for the following size CI water mains any size and shape, complete all as specified and directed by Engineer-in-Charge (A) Bore Size 150 mm Note : In case of inadequet lead received from burning out for remaking joints, the additional lead required shall be measured and paid separately as "Supply only".

All as per item No 28 .00 , Bore size 100 mm

Supply only run lead complete all as specified and directed.

M&L Cutting drilling and tapinge existing CI/DI water mains in position, for addn/altrn or for taking branch connection/insertion of pipe specials, valve of 150 mm bore pipe complete all as directed by Engineer- in- charge.

S&F CI bends, (any type radius & angle) tapers any type (strain out bend) increasing decreasing or double socket etc Tee pieces (single branch) short piece spigot reducing socket etc. after taking out old UNSV one complete all as specified and as directed.

S&F CI bends,Bends. Tapers. Tee pieces(single & double branch) any type and angle/radius and straight connecting pieces but all ends flanged after taking out old UNSV one complete all as specified and as directed.

S&F CI Connecting pieces one end flanged and other socket or spigot and bell mouth pieces one end flanged other endtapering as bell mouth after taking out old UNSV one complete all as specified and as directed.

S&F100mm dia Cast Iron Diapharm valve double flange BS-10 with iron wheel head including necessary rubber gaskets, nuts and bolts and washers of suitable size as in repair complete all as specified and directed.

S&F 40mm dia Cast Iron Diapharm valve double flange BS-10 with iron wheel head including necessary rubber gaskets, nuts and bolts and washers of suitable size as in repair complete all as specified and directed .

S&F Cast Iron Sluice valve of 150 mm bore of pressure rating PN-1.6 conforming to IS : 14846 – 2000 specifications comprising of cast iron body with control assembly of flanged both ends, brass spindle with extended iron rod of 25mm dia & 3.00 m long alongwith iron wheel head, bolts, nuts & washers with 3mm thick rubber gaskets including taking out the old unserviceable one complete all as specified and directed.

Supply and fix Cast Iron Sluice valve of 100 mm bore of pressure rating PN-1.6 conforming to IS : 14846 – 2000 specifications comprising of cast iron body with control assembly of flanged both ends, brass spindle with extended iron rod of 25mm dia & 3.00 m long alongwith iron wheel head, bolts, nuts & washers with 3mm thick rubber gaskets including taking out the old unserviceable one complete all as specified and directed.

Supply and fix Cast Iron Sluice valve of 80 mm bore of pressure rating PN-1.6 conforming to IS : 14846 – 2000 specifications comprising of cast iron body with control assembly of flanged both ends, brass spindle with extended iron rod of 25mm dia & 3.00 m long alongwith iron wheel head, bolts, nuts & washers with 3mm thick rubber gaskets including taking out the old unserviceable one complete all as specified and directed.

Repair to u/s sluice valve 150mm bore by taking out cleaning & derusting with acid washing all the parts after removing from site & replacement of brass spindle, GM lock nuts, gaskets, nuts both & washer etc to make fully serviceable and re-fixing the same in original position including connection complete all as specified and directed. Note : Brass spindle will be measured & paid separately.

Repair to u/s sluice valve 100mm bore by taking out cleaning & derusting with acid washing all the parts after removing from site & replacement of brass spindle, GM lock nuts, gaskets, nuts both & washer etc to make fully serviceable and re-fixing the same in original position including connection complete all as specified and directed. Note : Brass spindle will be measured & paid separately.

Supply only brass spindle suitable for 150mm bore sluice valve complete all as specified and directed.

All as per item No.43 but suitable for 100mm bore sluice valve complete all as specified and directed.

S&F Gun metal vertical check valve 100 mm dia heavy duty (ISI marked) flanged end including rubber gasket joints, nuts, bolts etc as in repair complete all as specified and directed.

S&F Gun metal vertical check valve 80 mm dia heavy duty (ISI marked) flanged end including rubber gasket joints, nuts, bolts etc as in repair complete all as specified and directed.

S&F Gun metal vertical check valve 50 mm dia heavy duty (ISI marked) flanged end including rubber gasket joints, nuts, bolts etc as in repair complete all as specified and directed.

S&F Gun metal vertical check valve 40 mm dia heavy duty (ISI marked) flanged end including rubber gasket joints, nuts, bolts etc as in repair complete all as specified and directed.

S&F 150mm bore Cast iron non return valve double flanged (class-'B) high pressure conforming to IS-5312 ete with nuts, bolts & washer gaskets etc including taking down the old unserviceable one complete all as specified and directed. Make : Kirloskar/leader/Venus

S&F 100mm bore Cast iron non return valve double flanged (class-'B) high pressure conforming to IS-5312 ete with nuts, bolts & washer gaskets etc including taking down the old unserviceable one complete all as specified and directed. Make : Kirloskar/leader/Venus

S&F 65mm bore Gun metal non return valve double flanged (class-'B) high pressure conforming to IS-5312 ete with nuts, bolts & washer gaskets etc including taking down the old unserviceable one complete all as specified and directed. Make : Kirloskar/leader/Venus

S&F 50mm bore Gun metal non return valve double flanged (class-'B) high pressure conforming to IS-5312 ete with nuts, bolts & washer gaskets etc including taking down the old unserviceable one complete all as specified and directed. Make : Kirloskar/leader/Venus

S&F 100mm bore Cast Iron butterfly valve, BS-5155 double flanged lever operated with necessary rubber gaskets, nuts and bolts and washers of suitable size as in repair complete all as specified and directed . Make : Kirloskar/leader/Venus

S&F 80mm bore Cast Iron butterfly valve, BS-5155 double flanged lever operated with necessary rubber gaskets, nuts and bolts and washers of suitable size as in repair complete all as specified and directed . Make : Kirloskar/leader/Venus

S&F 50 mm bore Gun metal gate valve as per IS : 778-84, marked Class-2 Pressure tested 2.4 Mpa with iron wheel head, screwed both ends for iron pipes or for unions as in repair complete as all specified and as directed. Make : Kirloskar/leader/Venus

S&F 40 mm bore Gun metal gate valve as per IS : 778-84, marked Class-2 Pressure tested 2.4 Mpa with iron wheel head, screwed both ends for iron pipes or for unions as in repair complete as all specified and as directed. Make : Kirloskar/leader/Venus

S&F 25 mm bore Gun metal gate valve as per IS : 778-84, marked Class-2 Pressure tested 2.4 Mpa with iron wheel head, screwed both ends for iron pipes or for unions as in repair complete as all specified and as directed. Make : Kirloskar/leader/Venus

S&F 20 mm bore Gun metal gate valve as per IS : 778-84, marked Class-2 Pressure tested 2.4 Mpa with iron wheel head, screwed both ends for iron pipes or for unions as in repair complete as all specified and as directed. Make : Kirloskar/leader/Venus

S&F Water pressure gauge 100mm dia in the main line of pump including necessary dirlling welding, taping/Threading of existing line etc with taking out unserviceable one complte all as specified directed by Engr-in-Charge.

S&F PTMT Ball Valve 25mm dia having mini -mum weight 455 Grams, high pressure with epoxy coated Aluminium Rod and high density Plastic Ball, screwed for Iron Pipe and fixed, complete all as specified and as directed.

Materials and Labour for Construction of brick masonary valve pit chamber of size 1050x1050x1050mm internal dimension using sub class-'B' bricks in CM (1:6) plastering in cement mortar (1:4) externally & internally extended to 15 cm below ground level including PCC bed 10 cm thick in PCC 1:3:6 Type C2 with MS frame fabricated by angle of size 40 x 40 x 6mm complete with top cover of 3 mm thick MS sheet & locking arrangement and painting with two coats of synthetic enamel over a coat of red oxide primer including demolition of old unserviceable damged valve pit complete all as specifed and directed.

Construction of brick masonary valve pit chamber of sizse 900 x 900 x 900 mm internal dimension using sub class-'B' bricks in CM (1:6) plastering in cement mortar (1:4) externally & internally extended to 15 cm below ground level including PCC bed 10 cm thick in PCC 1:3:6 Type C2 with MS frame fabricated by angle of size 40 x 40 x 6mm complete with top cover of 3 mm thick MS sheet & locking arrangement and painting with two coats of synthetic enamel over a coat of red oxide primer including demolition of old unserviceable damged valve pit complete all as specifed & directed.

Development of Tube well with suitable capacity compressed air for a period not less than 24 Hrs but till the sand free water is obtained (sand content of water shall not be more than 10ppm) complete all as specified and as directed by Engineer-in-Charge.

Lifting and lowering non clogging sewage submersible pump set 3 HP from open well with the help of chain pully including scaffolding and all other necessary arrangement complete all as specified and directed by Engr-in-Charge. Note:- (i) One lifting and one lowering should be measued as one unit. (ii) Replacment of minor spare parts i.e impeller key, neck ring, coupling bush and key,nuts bolts, washer etc. reassembling the pump after routine maintenance of serviceable spares and replacment of spare part shall be measured and paid separately under relevant items of BOQ.

M&L for repairing the non clogging sewage submersible pump set 3 HP suitable for 15 cum per hour discharge at head of 15 mtr by cleaning, derusting, and replacment of minior spares i.e impeller key, neck ring, coupling bush and key,nuts bolts, washer etc. reassembling the pump after m/c work of servicable spares and replacment of new spare parts, testing and commissioning complete after lowering of pump set complete all as directed by Engr-in-Charge. (Spare parts to be measured and paid seperately)

Suction Bush

Stage Casing Bush

SS Shaft

SS Sleevs

GM Impeller

Stage casing Ring

Ball bearings

O ring

SS Nut and Bolt with washer

MS Nut and bolt with washer

Rubber Gasket

Lifting and lowering of mono block submersible pump set and motor of any capacity from open well with the help of chain pully including scaffolding and all other necessary arrangement complete all as specified and directed by Engr-in-Charge. Note:- (i) One lifting and one lowering should be measued as one unit. (ii) Replacment of minor spare parts i.e impeller key, neck ring, coupling bush and key,nuts bolts, washer etc. reassembling the pump after routine maintenance of serviceable spares and replacment of spare part shall be measured and paid separately under relevant items of BOQ.

Dismantling and servicing thoroughly 7.5/10 HP openwell monoblock submersible pumps set complete and taking out unserviceable worn out spares and overhauling the serviceable spares by derusting etc. and repalcement of minor spares like collaring Impellar key, oil tube, gaskets, nuts, & bolts with washer and throughly cleaning and re-assembling the pump and testing commissioning complete all as directed by Engr-in-Charge. Note:- Spare parts other than minor spares required to be replaced shall be measured and paid seperately as 'Supply only' items below.

Angular contact bearing

Lock nut Stainless Steel

Impeller CI

Line shaft Stainless Steel

MS Supporting clamp

Lifting and lowering of submersible pump and motor of any capacity from bore well with the help of chain pully including scaffolding and all other necessary arrangement complete all as specified and directed by Engr-in-Charge. Note:- (i) One lifting and one lowering should be measued as one unit. (ii) Replacment of minor spare parts i.e impeller key, neck ring, coupling bush and key,nuts bolts, washer etc. reassembling the pump after routine maintenance of serviceable spares and replacment of spare part shall be measured and paid separately under relevant items of BOQ.

Lifting of 15 HP non clogging sewage pump with the help of chain pulley alongwith column pipe after diconnecting of electrical and mechanical connection, Cleaning thoroughly & dismantling 10HP /15 HP non clogging sewage pump assembly complete and taking out unserviceable worn out spares overhauling the serviceable spares by derusting, machining and repalcement of minor spares like collaring Impellar key, oil tube gaskets nuts, & bolts with washer re-asembling the pump testing commissioning complete after lowering of pump set complete all as directed by Engr-in-Charge. (Spare parts to be measured and paid seperately)

Supply and fixing only Spares for 15 HP non clogging sewage pump (A) Angular contact bearing

All as per item No 85, but Line bush (UBH & LBH) Gun metal

All as per item No 85, but Lock nut S.S

All as per item No 85, but Impeller CI

All as per item No 85, but Line shaft SS

All as per item No 85, but CI collar ring

All as per item No 85, but Bowl Assembly

All as per item No 85, but GI column pipe 5' long both end flange.

All as per item No 85, but Retainer Bearing

All as per item No 85, but Saft sleevs SS

All as per item No 85, but MS Suporting clamp

All as per item No 85, butOil Lubricating Pipe

All as per item No 85, but Brass Oil Lubricating Pot

Repairing the submersible pump 12.5/15 HP by cleaning, derusting, and replacment of minor spare parts i.e impeller key, neck ring, coupling bush and key,nuts bolts, washer etc. reassembling the pump after routine maintenance of serviceable spares and replacment of spare parts, testing and commissioning complete all as specified and directed. Note:- Spare parts other than minor spares required to be replaced shall be measured and paid seperately under 'Supply only' items below.

Supply only Suction Bush

Supply only Stage Casing Bush

Supply only Stainless Steel Shaft

Supply only Stainless Steel Sleeves

Supply only GM Impeller

Supply only Stage casing Ring

Supply only NRV

Supply only Sort piece with flange

Supply only Stainless Steel Nut and Bolt with washer

Supply only MS Nut and bolt with washer

Supply only Rubber Gasket

Material and Labour Rewinding of submersible electric motor AC 3phase 415 volts 50- HZ of capacity 12.5HP/15 HP with water proof PVC insulated copper wire of same specification after removing the old burnt out winding and replacment of bush bearing etc including testing & commissioning complete all as specified and directed by Engr-in-Charge.

Material and Labour Rewinding of electric motor AC 3phase 415 volts 50- HZ of capacity 10/15 HP with supper enamel copper wire of same size and heating and vernishing after removing the old burnt out winding including replacement of bearing etc testing & commissioning complete all as specified and directed by Engr-in-Charge.

Material and Labour Rewinding of mono block submersible motor of 7.5/10 HP after taking out the burnt out winding with new PVC water proof copper cable, overhauling and repacement of bush bearing etc complete all as specified and directed by Engr-in-Charge.

Material and Labour Rewinding of mono block submersible motor of 15 HP after taking out the burnt out winding with new PVC water proof copper cable, overhauling and repacement of bush bearing etc complete all as specified and directed by Engr-in-Charge.

Disconnecting the 0.5/1/2 HP unserviceable pump set for servicing , rewinding incl overhauling by replacement of bush bearing of motor/pump and refixing the same after testing & commissioning complete all specified and as directed by Engr-in-Charge.

M&L Plain cement concrete 1:2:4 type B2 (using 40mm graded crushed stone aggregate) as in foundation filling mass concrete etc complete all as specified and directed.

Dismantling and servicing thoroughly 15 HP openwell monoblock submercible pumps set complete and taking out unserviceable worn out spares and overhauling the serviceable spares by derusting etc. and repalcement of minor spares like collaring Impellar key, oil tube, gaskets, nuts, & bolts with washer and cleaning throughly and re-assembling the pump and testing commissioning complete all as directed by Engr-in-Charge. Note:- Spare parts other than minor spares required to be replaced shall be measured and paid seperately as 'Supply only' items below.

Angular contact bearing

Lock nut Stainless Steel

Impeller CI

Line shaft Stainless Steel

GI column pipe 5' long both end flange.

MS Supporting clamp

Repairs Panel board for pump of any size/ any type by disconnecting and taking out old unserviceable wires and spare parts and rewiring the same with same size of copper wire, replacment of nut & bolts with washers,cleaning with blower, painting with one coat of synthetic enamel painting of existing colour including necessary preparation of surfaces including testing and commisioning complete all as specified and directed by Engr-in-Charge. Note:- Any other Electrical fittings connecting to panel board should be measured and paid separately.

Supply and fix Fully automatic star delta starter with steel enclosure AC 3 phase, 415 volt 50 Hz, type ML-1.5 relay range 14-23 Amps suitable for 10 HP15HP pump motor set fixing on existing LT panel board complete all as specified and as directed. Make:- L&T Cat Part No.SS95894 or equivalent make of Schneider / Siemens / ABB.etc

Supply and fix DOL starter suitable for upto 7.5 HP motor,5.5 KW, 3phase, 415 Volts, 9-15 A fixing on existing LT panel board complete all as specified and as directed. Make:- L&T Cat No SS97210 or equivalent model from make:- Schneider / Siemens / ABB.

Supply and fix Contactor ML-2, 32A capacity, 2NO + 2NC, 415 V ratings fixing on existing LT panel board complete all as specified and as directed. Make:- L&T Cat No SS90701 or equivalent make of Schneider / Siemens / ABB.etc

Supply and fix Contactor ML 1.5, 24A, capacity, 2NO + 2NC, 415 V ratings fixing on existing LT panel board complete all as specified and as directed. Make:- L&T Cat No SS91851 or equivalent make of Schneider / Siemens / ABB.etc

Supply and fix Electronic timer ET-100, 415 V, 50 Hz fixing on existing LT panel board complete all as specified and as directed. Make:- L&T Cat No ST80329OOOO or equivalent make of Schneider / Siemens / ABB.etc

Supply and fix CT Coil fixing on existing LT panel board,capacity 100 amps complete all as specified and as directed.

Supply and fix Relay, thermal overload type for ML-2 contactor, 13-21 A fixing on existing LT panel board complete all as specified and as directed. Make:- L & T Cat No SS91859OOCO or equivalent make of Schneider / Siemens / ABB.etc

Supply and fix Relay, thermal overload type for ML-1.5 contactor, 1.5-2.5 A fixing on existing LT panel board complete all as specified and as directed. Make:- L & T Cat No SS91858OOPO or equivalent make of Schneider / Siemens / ABB.etc

Supply and fix Single Phase Preventer fixing on existing LT panel board complete all as specified and as directed.complete all as specified and directed. Make:- L & T Cat No XM81808OOOO or equivalent make of Schneider / Siemens / ABB.etc

S&F Indicator lamp, LED type of colour red, blue and yellow including taking down of old UNSV complete all as specified and directed.

Supply and fix PVC insulated water proof 3 core cable suitable for submersible pump set 1100 volts grade with stranded copper conductor cable of size 4 Sqmm including taking out the old unserviceable one complete all as specified and directed.

Dismantling the channel base and taking out the pump & motor of capacity 25 HP AC 3 phase 415 volt disconnecting the pump motor, opening the pump, cleaning derusting thoroughly, machining inside body of the pump & repairing by replacement collar rings, gaskets, Impeller locknuts, shaft key etc re-assembling the pump including installtion & testing commissioning complete all as specified and directed. Note:- Spare parts other than minor spares required to be replaced shall be measured and paid seperately under 'Supply only' items below.

Stage casing Ring

Stage casing

SS Shaft

SS Shaft Sleevs

Brass Impeller

Impeller Bush

Pump Bearing

Motor Bearing

SS Nut and Bolt

Coupling of Pump motor

Material and Labour Rewinding of electric motor AC 3phase 415 volts 50- HZ of capacity 25 HP with supper enamel copper wire of same size and heating and vernishing after removing the old burnt out winding including replacement of bearing etc testing & commissioning complete all as specified and directed by Engr-in-Charge.

Opening of the first top cover from the sump and pumping out all dirt water from sewage sump,Blocking the sewage line to sump providing jute bags at first manhole and cleaning the sump thoroughly with the help of wire brush after removing the sludge/silt and other foreign materials complete removing the blockage from sump complete of any capacity including removing the sludge from the pump house premises and depositing away from cantonment area complete all as specified and directed by Engineer-In-Charge.

M&L for Cleaning and sterilization of under ground sump of capacity 100000 gallon through bactrological treatment and ultra violet ray in following seven stages including writing the date of cleaning complete all as directed by Engr-in-Charge. (a) To drain out the water by using exit valve or our own high capacity dewatering system.

All as per item No 150 but, (b) Cleaning all the algae formation inside the tank using a laboratory tested branded chemical of the company and scrubbing the walls of the tanks.

All as per item No 150 but, (c ) Fresh water cleaning by high speed jet pump.

All as per item No 150 but, (d) First bacteria screening is desertification by using a Govt Laboretory certified branded halogen compound.

All as per item No 150 but, (e) Cleaning of the floor of the water tank by industrial vacuum cleaner.

All as per item No 150 but, (f) The second bacteria screening and streilizing method by using ultra violet ray with in the tank and kills all suspended bacteria.

All as per item No 150 but, (g) Cleaning the third bacteria screening and strerilize the floor of the water tank by using laboratory certified branded strong oxidizing agent

All as per item No 150 but, (h) under ground sump of capacity 60000 gallons

All as per item No 150 but, (j) under ground sump of capacity 22000 gallons

All as per item No 150 but, (k) under ground sump of capacity 12500 gallons

All as per item No 150 but, (l) under ground sump of capacity 6250 gallons

All as per item No 150 but, (m) under ground sump of capacity 5000 gallons

All as per item No 150 but, (n) overhead tank 100000 Gallons capacity

All as per item No 150 but, (o) overhead tank 75000 Litres capacity

All as per item No 150 but, (p) overhead tank 45000 Litres capacity

PUTUL CONSTRUCTION CO.

NUPUR CONSTRUCTION