REPAIR REPLACEMENT OF UNSERVICEABLE PIPELINE FOR WATER SUPPLY OF MAP AREA INCLUDING TANK CLEANING, FILTER MEDIA CHANGING AT SEVOKE ROAD MIL STN UNDER GE SEVOKE ROAD

Amount

Excavation in trenches not exc 1.5 mtr wide and not exc 1.5 mtr in depth and getting out excavated material for laying/ taking out pipe line, cables, etc in soft/ loose soil complete all as specified and directed

Returning, filling in including spreading, levelling, watering and well ramming in layers not exc 25 cm in each layer in soft/ loose soil complete all as specified and directed

Removal of surplus soil to a distance not exc 50 mtr and depositing where directed at a level not exc 1.5 mtr above the starting point all as specified and directed

Material and labour for PCC (1:3:6) type C2 using (40mm graded crushed stone aggregate) as in foundations filling and mass concrete or any other works all as directed by Enginner- in -Charge

Taking up or down from any position existing steel water tubing 20 mm bore of any type and connections carefully including cleaning for refixing or removal to E/M store yard or issued as credit complete all as specified and as directed. Note :Excavation/earth work shall be measured and paid separately under respective item of schedule considered here-in-before.

All same as item No. 05 above but 25 mm bore.

All same as item No. 05 above but 40 mm bore.

All same as item No. 05 above but 50 mm bore.

All same as item No. 05 above but 80 mm bore.

Relaying/refixing of old serviceable steel water tubing as obtained from item No. 5 to 9 here-in-before, jointing and testing in new or existing position including all new fittings, ISI Marked, such as bends, elbow, tee, reducers, sockets, unions, flange etc as required, laid in trenches or fixed to wall/cellinng or floors including making holes in wall where required complete all as specified and directed by Engr-in-charge for 20 mm bore pipes.

All same as item No. 10 above but 25 mm bore.

All same as item No. 10 above but 40 mm bore.

All same as item No. 10 above but 50 mm bore.

Supply, laying, jointing & testing 20 mm bore galvanised iron tubing medium grade with all fittings such as bends, elbow, tee, socket, reducers, unions etc as required at site laid in trenches complete all as specified and directed.

All same as item No. 14 above but 25 mm bore.

All same as item No. 14 above but 40 mm bore.

All same as item No. 14 above but 50 mm bore.

Supply and fixing in repair gun metal gate/globe valve, 50 mm bore, ISI Marked, with iron wheel headed screwed both ends for pipe including taking down unserviceable complete all as specified and as directed.

All same as item No. 18 above but 40 mm bore.

All same as item No. 18 above but 25 mm bore.

All same as item No. 18 above but 20 mm bore.

Supply, laying, jointing & testing 3-layer PP-R (Polypropylene random copolymer) concealed pipes, 63 mm outer dia, SDR 7.4 (PN16) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply including all PP-R plain & brass threaded polypropylene random fittings such as bends, elbow. tee, socket, reducers, unions laid in trenches or in floors etc as required at site complete all as specified and directed.

All same as item No. 23 above but 50 mm outer dia.

All same as item No. 23 above but 40 mm outer dia.

All same as item No. 23 above but 32 mm outer dia.

Supply and fixing in repair PP-R Gate valves (brass insert), for 63 mm outer dia pipe, as per requirement of the site including taking down unserviceable valves complete all as specified and as directed of the following sizes:-

All same as item No. 27 above but 50 mm outer dia.

All same as item No. 27 above but 40 mm outer dia.

All same as item No. 27 above but 32 mm outer dia.

Supply, laying, jointing & testing of U-PVC pipes (SCH 40) pipes of size 50 mm bore confirming to ASTM D1785 including all U-PVC fittings such as bends, elbow, tee, socket, reducers, unions fixed complete to walls, ceilings, trenches or in floors etc as required at site complete all as specified and directed.

All same as item No. 31 above but 40 mm bore

All same as item No. 31 above but 25 mm bore

All same as item No. 31 above but 20 mm bore

Supply and fixing U-PVC ball valves ISI marked as per requirement of the site including taking down size 50 mm bore unserviceable valves complete all as specified and directed.

All same as item No. 35 above but 40 mm bore

All same as item No. 35 above but 25 mm bore

All same as item No. 35 above but 20 mm bore

Cutting of existing 150 mm bore cast iron/DI pipes in any position for insertion and fitting of new Tee, Coller, Tail pieces etc for taking out connections, branch connections complete all as specified and directed for the following sizes:- Note :- (a) Excavation/earth work shall be measured and paid seperately under respective item of schedule. (b) Cast iron fittings shall be measured and paid seperately as supply only under respective item of the schedule

All same as item No. 39 above but 100 mm bore

Taking out 150 mm bore pipe cast iron/Ductile iron/PVC/cemented water mains including all fittings with flanged joints/tyton joints/spigot and socket ends of the size complete all as specified and directed. Note :Excavation/earth work shall be measured and paid separately under respective item of schedule considered here-in-before.

All same as item No. 41 above but 100 mm bore

Supply laying jointing and testing of size 150 mm bore Ductile iron water mains class K-7 with spigot and socket ends including rubber gasket joints laid in trenches complete all as specified and directed.

All same as item No. 43 above but 100 mm bore

Supply, fixing and testing DI fittings for spigot & socketed or flanged pipes i.e. bends, reducers, tail pieces, tapers, tees, collars, caps, plugs with MS plate, nuts, bolts, washers gaskets etc of sizes 80mm to 200mm dia including taking out Unserviceable complete all as specified and directed .

Material and labour for boring drilling, threading and tapping on existing cast iron mains of size 80 mm to 200 mm bore for connecting 15/20 mm bore pipe by fixing on clamp made out of MS flat iron of size 40 x 3 mm made to required shape & size with GI socket duly welded, nut & bolts etc. complete all as specified and directed.

Repair to existing GI/U-PVC pipe line to prevent the leakage including cutting the pipe line in position and insertion of new fittings like sockets, tees, reducers, bends as required at site or welding of suitable size all as directed by Engr-in-charge for the following sizes :- Note:- GI fittings shall be measured separately as supply only

Supply only GI socket of size 50 mm bore.

Supply only GI socket of size 40 mm bore.

Supply only GI socket of size 25 mm bore.

Supply only GI socket of size 20 mm bore.

Supply only U-PVC socket of size 50 mm bore.

Supply only U-PVC socket of size 40 mm bore.

Supply only U-PVC socket of size 25 mm bore.

Supply only U-PVC socket of size 20 mm bore.

Supply only GI union of size 50 mm bore.

Supply only GI union of size 40 mm bore.

Supply only GI union of size 25 mm bore.

Supply only GI union of size 20 mm bore.

Supply only U-PVC union of size 50 mm bore.

Supply only U-PVC union of size 40 mm bore.

Supply only U-PVC union of size 25 mm bore.

Supply only U-PVC union of size 20 mm bore.

Supply only GI Nipple of size 50 mm bore.

Supply only GI Nipple of size 40 mm bore.

Supply only GI Nipple of size 25 mm bore.

Supply only GI Nipple of size 20 mm bore.

Supply only U-PVC Nipple of size 50 mm bore.

Supply only U-PVC Nipple of size 40 mm bore.

Supply only U-PVC Nipple of size 25 mm bore.

Supply only U-PVC Nipple of size 20 mm bore.

Supply only GI reducer socket of size 50 x 40 mm bore.

Supply only GI reducer socket of size 50x25 mm bore

Supply only GI reducer socket of size 40x25 mm bore

Supply only GI reducer socket of size 40x20 mm bore

Supply only U-PVC reducer socket of size 50 x 40 mm bore.

Supply only U-PVC reducer socket of size 50x25 mm bore

Supply only U-PVC reducer socket of size 40x25 mm bore

Supply only U-PVC reducer socket of sizet 40x20 mm bore

Supply only GI plug of size 40 mm bore.

Supply only GI plug of size 25 mm bore

Supply only GI plug of size 20 mm bore

Supply and fixing 150mm bore sluice valve PN 1.6 with Stainless steel spindle nuts, bolts, washers and rubber gasket sheet for packing including taking out existing unserviceable sluice valve fixed at any position all as specified and directed.

All same as item No. 83 above but 100 mm bore dia

All same as item No. 83 above but 80 mm bore dia

Material and labour for run lead joint for 150 mm bore CI pipe by using Jute rope & Lead throughly and MS clamp (as per diameter of the pipe completely covering the joint location ) shall be placed prior to putting molten lead, testing after completion including dismantling old/defective /wornout joint inclusive complete all as specified and directed. (Note:- Cost of excavation, returning, removal , jute rope, lead & clamps shall deemed to be included in the unit rate quoted).

All same as item No. 86 above but 100 mm bore dia

Supply and fixing mechanical joint of size 150 mm bore complete all as specified and directed.

Supply and fixing mechanical joint of size 100 mm bore complete all as specified and directed.

Material and labour for seven stage cleaning and sterlisation of inside of overhead pressed mild steel/RCC tank for 43000 gallon O/H tanks at 18 to 20 mtr height through bacteriological treatment by using TERBAC G5/Inchor-5/NB-10/TERBAC-G-65/Inoxi-60/NB-69 and Ultra voilet ray including arrangement of necessary T&P, labour and Chemicals mechanise etc before starting process of cleaning complete all as specified and as directed. Seven stages are as under follows :- (a) First stage is to drain out the water by using exit valve or by own high capacity dewatering system. (b) Second stage is cleaning all the algae formation inside the tank by using TERBAC-G-10/Inoxi-60/NB-69 as approved by Engr-in-charge and scrubing the walls of the tanks. (c) Third stage is scrubbing the wall with mechanised scrubber and fresh water cleaning by high speed jet pump. (d) Fourth stage and first bacteria screening is degermification by using TERBAC GS/Inchor-5/NB-10 as approved by Engr-in-Charge (e) Fifth stage is cleaning the floor of the water tank by industrial vacuum cleaner. (f) Sixth stage is the second bacteria screening and sterilizing method by using ultra voilet ray within the tank and kills all suspended bacteria. (g) Seventh stage of cleaning and third bacteria screening is to sterlize the floor of the water tank by using TERBAC-G-65/Inoxi-60/NB-69 as approved by Engr-in-charg. Make- Rays Clean Tech/ M L Treatment / M/S Tank Cleaning Pvt Ltd or in equivalent OEM. Note : 2 years warranty certificate must be submitted before RAR.

Dismantling of GI Pipe Connections from the Pressure Filter Plant capacity 6000 to 10000 Gallons, opening the Manhole and removal/taking out old Filter Media completely from Oxidation Chamber, Pre-filter, Iron Removal Filter and depositing the same to a distance not exc. 100 Metre and re-fixing the pipes in the original/existing Position after replacement of unserviceable PVC Nozzale (Dome type) including replacement of Gasket of Manhole Cover and necessary Bolts, Nuts, Washers, etc. as required, complete all as specified and as directed.

Supply and incorporation of MNO2 of size 1/2'' x 1'' as filter media of iron removal plant ,complete all as specified & directed.

Supply and incorporation of GRAVEL of size 1 1/4'' x 1 1/2''(collection sourceBARAKAR river bank) as filter media of iron removal plant complete all as specified & directed.

Supply and incorporation of GRAVEL of size 1/2'' x 1''(collection source BARAKAR river bank) as filter media of iron removal plant complete all as specified & directed.

Supply and incorporation of GRAVEL of size 1/4'' x 1/2''(collection sourceBARAKAR river bank) as filter media of iron removal plant complete all as specified & directed.

Supply & incorporation of SAND of size 1/6" x 1/8'' mesh (collection source BARAKAR river bank) as filter media of iron removal plant complete all as specified & directed.

Supply & incorporation of Anthracite grit of size 1/8" x 1/4'' as filter media of iron removal plant complete all as specified & directed.

Supply & fixing PVC strainers ISI marked of sizes as dismantled complete all as specified and directed.

Material and labour Painting to External Surfaces of Iron Removal Chamber, Pre-filter Chamber, Oxidation Chamber including Pipes complete of Fiteration Plant capacity 8000 GPH with Two Coats of Sythetic Enamel Paint of approved colour including neccessary preparation of surfaces, complete all as specified and as directed.

Material and labour Painting to Internal Surfaces of Iron Removal Chamber, Pre- filter Chamber and Oxidation Chamber complete of Filteration Plant capacity 8000 GPH with Two Coats of Black Bituminous Paint (Lead Free) suitable for Drinking Water grade including necessary surface preparation by means of scraping, brushing, cleaning, complete all as specified and as directed.

Supply and fixing in repair Pressure guage of capacity 210 kg/cm2. complete all as specified and as directed.

Supply and fixing 3 phase Digital panel volt Meter Flush Mounting 96x96mm, Accuracy Class-I, input voltage measurement range 17-520V AC (P-P), including taking out unserviceable complete all as specified and as directed.

Supply and fixing 3 phase 5A, Digital panel ammeter Flush Mounting 96x96mm, Accuracy Class-I, CT/PT Site programmable including taking down existing unserviceable one complete all as specified and as directed.

Supply and fixing 3 phase indicator lamp including taking down existing set complete all as specified and as directed by Engr-in-Charge

Material and labour for construction of valve chamber of sizes 1200mm x 1200mm x1200mm (internnal dimensions) with MS sheet cover 3mm thick with angle iron frame of size 50 x 50 x 6mm and locking arrangements including excvation and earth work in any type of soil,PCC (1:4:8) type D2 in foundation ,PCC benching 1:2;4 type B-1 ,PCC (1:5:8) block masonry 20 cm thick in cement mortor (1:6),10 mm thick plastering in CM 1:4 ,PCC bed in (1:3:6) and coping 50mm hick in cement concrete 1:2:4 type B1 using 20mm stone aggregate including necessary formwork, painting one coat of red oxide and two coats of bituminious black paint on all steel surfaces as specified and as directed including demolition of existing valve chamber,complete all as specified and as directed.

M&L for construction of valve chamber with MS sheet cover 3mm thick with angle iron) frame of size 700 x 700 x 6mm and locking arrangements including painting one coat of primer followed by two coats of black sysnthetic paint including excvation and earth work in any type of soil,PCC (1:4:8) type D2 in foundation ,PCC benching 1:2;4 type B-1 ,PCC (1:5:8) block masonry 20 cm thick in cement mortor (1:6),10 mm thick plastering in CM 1:4 ,PCC bed in (1:3:6) and coping 50mm thick in cement concrete 1:2:4 type B1 using 20mm stone aggregate including necessary formwork,paintin one coat of red oxide and two coats of bituminious black paint on all steel surfaces as specified and as directed of sizes 700mm x 700mm x1000mm (internnal dimensions) including demolition of existing valve chamber,complete all as specified and as directed.

Material and labour for fabrication of new Valve chamber cover made up of 4 mm thick MS sheet with hooks and handles of existing size including fixing of cover of the valve chamber on the channel including one coat primer followed by one coat of black bitunibous paint complete all as specified and as directed.

Material and labour for painting of Valve chamber cover made up of MS sheet of any size by surface preparation using emery paper followed by one coat of primer and one coat of black syntheic enemel paint complete all as directed by engineer-in-charge.

Material and labour for 15 mm thick rendering in cement mortar (1:4), in two layers, under coat of 10mm thick & top of 5mm thick, to fair faces of brick or concerete wall of valve chambers, top layer 5 mm thick finished even and smooth without using extra cement complete all as specified and as directed by engineer-in-charge.

Material and labour for transportation of following capacities defective pump set size of 30 HP to workshop dismantling the same including Disconnecting electrical connections decoupling 440 volt AC centrifugal electrial motor pump set of following capacities, dismantling the motor,taking out burnt winding wire from the stator, cleaning of the casing and the stator with wire brush, rewinding of motor with superior quality copper winding wire of existing size including varnishing and drying, cable jointing and repair replacement of worn out parts of pump reassembling the same with motor installing the motor and pump , reconnecting all pipe and electric connections and testing on full load complete :- Note : Spare parts replaced shall be measured & paid seperately under respective item of schedule. Cost of rewiring and winding materials is included in item rate.

All same as item No. 110 above but 10/7.5 HP

All same as item No. 110 above but 5/3 HP

All same as item No. 110 above but 1 HP

All same as item No. 110 above but 0.5 HP

Material and labour for taking out Centrifugal/openwell motor pump set of any capacity from site, disconnecting submersible cable meggering it to check serviceability, re-fixing the same at site after repair including, cable jointing, reconnecting all pipe and electric conections and testing on full load complete all as specified and as directed.

Transporting defective Openwell submersible Pump of Capacity 7.5/10HP capacity to work shop, dismantling the motor,taking out burnt winding wire from the stator, cleaning of the casing and the stator with wire brush, rewinding of motor with superior quality copper winding wire of existing size including varnishing and drying, reassembling the same complete as directed by Engr-in-Charge Note:- Spare parts shall be measured and paid separately as supply only.

Servicing of pump set obtained from item no 115 ,dismantling all parts cleaning, brushing all parts, replacement of unserviceable parts if required, greasing oiling of movable parts,re-assembling all serviceable parts complete all as specified and as directed. (Note: Spare part of pump set will be measured and paid separately as supply only)

Supply only Bearing of existing size

Supply only Bearing bush rubber

Supply only stainless steel sleeve at staging

Supply only Impellers

Supply only neck ring

Material and labour for taking out submersible pump set of any capacity from bore well complete with column pipes of any size submersible cable and steel wire rope and lowering the same in bore well after carry out necessary repairs/lowering of spare pump including T&P arrangement complete all as specified and as directed.

Material and labour for transportation of defective pump set 15HP to workshop dismantling the same incl Disconnecting electrical connections decoupling 440 volt AC submersible motor pump set of following capacities, dismantling the motor,taking out burnt winding wire from the stator, cleaning of the casing and the stator with wire brush, rewinding of motor with superior quality copper winding wire of existing size including varnishing an drying, cable jointing and repair replacement of worn at parts of pump reassembling the same with motor installing the motor and pump , reconnecting all pipe and electric connections and testing on full load complete :- Note : Spare parts replaced shall be measured & paid seperately under respective item of schedule. Cost of rewiring and winding materials is included in item rate.

All same as item No. 124 above but 12.5/10 HP

All same as item No. 124 above but 7.5/6 HP

Servicing of pump set obtained from above, dismantling all parts cleaning, brushing all parts, replacement of unserviceable parts if required, greasing oiling of movable parts,re-assembling all serviceable parts complete all as specified and as directed. (Note: Spare part of pump set will be measured and paid separately as supply only)

Supply only of following parts of submersible pump set of capacity 15/12.5/10 HP.

CI stage casing

Bearing bush rubber

Stainless Steel sleeve at staging

Impellers

Neck ring

Key for impellers

MS stud with nuts of size of 3/8" X 2" for stage casing

Bush gun metal at intermediate section

Steel sleeve at intermediate section

GI pipe of 80 mm dia including socket heavy grade of 3 mtr length for column pipe

Supply only of following parts of capacity 7.5/6 HP submersible pump set : -

CI stage casing

Bearing bush rubber

Stainless Steel sleeve at staging

Impellers

Neck ring

Key for impellers

MS stud with nuts of existing size for stage casing

Bush gun metal at intermediate section

Steel sleeve at intermediate section

Supply only chemical for drinking water treatment , calcium based granular high strength disinfectant chlorinating chemical having 65 % to 70 % chlorine content in granular form in a 45kg drum.. Brand should be from any manufacturer aproved by E-in-c's branch.

Supply and fixing MS clamp fabricated to shape 50x6 mm of size 80 mm suitable for fixing pipes on wall complete all as specified and as directed.

Supply and fixing turn-buckle 16 inches suitable for fixing pipes complete all as specified and as directed.

Supply and fixing PPR flange alongwith core of size 90 mm dia as per ISI standards complete all as specified and as directed

Supply and fixing MS flange of size 80 mm ISI marked complete all as specified and as directed by engineer-in-charge. (Note: Quotated rates shall be inclusive of welding work involve for fixing of MS flange).

Material and labour for fabrication of handle for operating 100/150/200 mm sluice valve of made up of medium grade GI pipe T - Shape with minimum height 2 mtrs duly welded slot suitable for opearting sluice of suitable size complete all as specified and as directed by engineer-in-charge.

Supply and fixing foot valve of size 100 mm dia ISI marked complete all as specified and as directed

Supply and fixing Non Return Valve (NRV) of 100mm dia, ISI marked all as specified and as directed

Supply and fixing Injection Valve (NRV) to protects againt backflow and generates optimal pressure all as directed

Supply and fixing Suction and discharge tubes 3/8" high pressure for injecting chlorine all as directed.

Supply and fixing flat submersible cable 3 core multi stranded copper conductor of size 6 sqmm. complete all as specified and as directed.

Supply and fixing in replacement nozzles of existing size with adjustments of correct direction including taking down unserviceable nozzles and removed from site complete all as specified and as directed.

Material and labour for cleaning of fountain well existing nozzle with wire and wire brush alignment of nozzle repair of fountain pipe line by welding and replacement of nut bolts and washers and make it run smoothly without blockage/intruption complete all as specified and as directed.

Servicing of air compressor installed at various pump houses including dismantling of motor pump set, varnishing and heating up coils , greasing and oiling of movable parts, replacements of spare parts if required complete all as specified and directed (Note: Spare part of pump set will be measured and paid separately as supply only)

Supply only following items as per existing size and make of air compressor:-

Compressor oil

Nut bolts

Cleaning/develpoment of borewell using conventional method by means of air compressor of suitable capacity of atleast 8 hours minimum until sand free mud free clean water obtained from the existing deep tubewell including taking up & down of submersible pump set with column pipe complete all as specified and as directed. Note: Quotated rates shall deemed to be inclusive cost of lifting and lowering of submersible pump alongwith coloum pipes.

D.D. BROTHERS (BID ID -3486708)

SRI SURAJIT SENGUPTA (BID ID -3486150)

M/S ASOKE KUMAR MAJUMDER (BID ID -3484404)

CHANDAN TRADERS (BID ID -3486592)

NARESH GUPTA (BID ID -3485684)

M/S ASHWIRBAD WOODCRAFT (BID ID -3484857)

M/S Bikash Saha (BID ID -3486239)