REPAIR TO WATER SUPPLY AND CONNECTED ITEMS AT ZONE A AND FIRE FIGHTING EQUIPMENTS AT MAP OR BLOCK P 19 AND CONNECTED AREA AT SEVOKE 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 GI water tubing and connections carefully including cleaning for refixing or removal to E/M store yard complete all as specified and as directed for following sizes:- Note :- Excavation/earth work shall be measured and paid seperately under respective item

20 mm bore

25 mm bore

40 mm bore

50 mm bore

80 mm bore

100 mm bore

Relaying/Fixing old serviceable water tubing, jointing and testing as obtained from item No.5 here-in-before in new or existing position, laid in trenches, fixed to wall/celling or floors including making holes in wall where required complete all as specified and directed by Engr-in-charge for the following sizes:-

20 mm bore

25 mm bore

40 mm bore

50 mm bore

Supply, laying, jointing & testing 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 for the following sizes:-

20 mm bore

25 mm bore

40 mm bore

50 mm bore

80 mm bore

100 mm bore

Supply and fixing in repair gun metal gate/globe valve, ISI Marked, with iron wheel head screwed both ends for pipe including taking down unserviceable complete all as specified and as directed the following sizes:-

50 mm bore

40 mm bore

25 mm bore

20 mm bore

Supply, laying, jointing & testing3-layer PP-R Polypropylene random copolymer) concealed pipes, 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 fixed complete to walls, ceilings, trenches or in floors etc as required at site complete all as specified and directed for the following sizes:-

25 mm bore

32 mm bore

50mm bore

63 mm bore

Supply and fixing in repair PP-R Gate valves (brass insert) ISI Marked as per requirement of the site including taking down unserviceable valves complete all as specified and as directed of the following sizes:-

25 mm bore

32 mm bore

50mm bore

63 mm bore

Cutting of existing cast iron/DI pipes in any position for insertion 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. (b) Fittings shall be measured and paid seperately.

150 mm bore

100 mm bore

Taking out cast iron/Ductile iron/PVC/Cemented water mains including all fittings with flanged joints/tyton joints/ spigot and socket ends for the following sizes :-

150 mm bore

100 mm bore

Supply, laying, jointing and testing of 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 for the following sizes :-

150 mm bore

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 300 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 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 following sizes:-

50 mm bore

25 mm bore

20 mm bore

Supply only GI union of following sizes:-

50 mm bore

40 mm bore

25 mm bore

20 mm bore

Supply only GI Nipple of following sizes:-

50 mm bore

40 mm bore

25 mm bore

20 mm bore

Supply only GI reducer socket of following sizes:-

50x40 mm bore

50x25 mm bore

40x25 mm bore

Supply only GI plug of following sizes:-

50 mm bore

40 mm bore

25 mm bore

20 mm bore

Supply and fixing 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 of following sizes :-

200mm bore

150mm bore

100mm bore

80 mm bore

Material and labour for run lead joint for 200 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).

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).

Material and labour for run lead joint for 100 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).

S & F mechanical joint of following sizes, complete all as specified and directed:

150mm bore

100mm bore

Material and labour for seven stage cleaning and sterlisation of inside of overhead pressed mild steel/RCC tank 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/ Inus Watertech/Satya Enterprises.

For 50,000 Gallon O/H tanks at 18 to 20 mtr height

For 40,000 Gallon O/H tanks at 18 to 20 mtr height

For 50,000 Gallon U/G Tank ( MAP Majors area PH)

For 100,000 Gallon U/G Tank ( MAP ORs area PH)

For 25000 ltrs O/H Tank (33 blocks of MAP)

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.

Testing of water sample of various pump houses of Sevoke Military Station for bacteriological and chemical testing (systematic analysis) from government approved laboratory including submitting the report to the engineer in charge ,complete all as specified & 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.

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 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.

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 by 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)

Supply only of following parts of centrifugal/openwell pump set : -

Bearing of existing size

Bearing bush rubber

Stainless Steel sleeve at staging

Impellers

Neck ring

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

Bush gun metal at intermediate section

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.

Servicing of pump set obtained from item no 51, 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)

Supply only of following parts of submersible pump set of capacity 12.5 HP to 20 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

MS pipe of 100 mm dia including socket heavy grade of 3 mtr length for column pipe

Supply only of following parts of capacity 15/12.5 HP submersible pump set : -

CI stage casing

Bearing bush rubber

Stainless Steel sleeve at staging

Impellers

Neck ring

Key for impellers

Key for impellers

Bush gun metal at intermediate section

Steel sleeve at intermediate section

Supply and fixing Single Phase Preventor used for automatic Star Delta Stater with on delay timmer (2-3min) and auto manual switch, complete all as specified and 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.

Servincing 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

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

Compressor oil

Nut bolts

Supply and fixing in repair stainless steel 2 way Fire Brigade Inlet connection ISI marked with inbuilt Check Valve including taking down and removed from site complete all as specified and as directed.

Supply and fixing in repair stainless steel 63 mm bore Heavy Duty Single Headed Fire Hydrant Landing valve As per IS:5290 type 'A' ISI marked with ABS Blank cap including taking down unserviceablve valve and removing from site complete all as specified and as directed.

Supply and fixing in repair Hose reinforced rubber lined fire Pipe of Size 63 mm bore ( 15 Mtr Length ) With Both Side SS coupling ISI marked Male & Female connection type including taking down complete all as specified and as directed.

Supply and fixing in repair Branch Pipe with SS Nozzle as per IS 903 ISI marked including taking and removing from site down complete all as specified and as directed.

Supply and fixing in repair of Hose box made of 18 gange MS sheet 800 mm x 600mm x 250 mm with double door with 4 mm thick glasses and door fram made of 16 gauge MS sheet painted fire red out side and brilliant white inside yard complete including taking out old unservicebale Hose box and removing from site compelte all on specified and directed.

Supply and fixing in repair Hose reel Drum ( Wall Mounted) swinging type as per IS : 884 including Hose pipe Length 30 Mtr Long of Size:- 20 mm bore thermo plastic hose as per IS 12585, ISI marked with PVC ¾ “ Shutoff Nozzle (Hydraulically Crimped) including taking down and removing from site complete all as specified and as directed.

Supply and fixing in repair PVC Shut off Nozzle Size 20 mm bore ISI marked including taking down complete all as specified and as directed and removing from site.

Supply and fixing in repair Hose Clamp including taking down and removing from site complete all as specified and as directed.

Supply and fixing in repair 100mm Dual Plate Check Valve :- Cast Iron Body , D.I. Doors ,Nitrile /EPDM Seat ,Stainless Steel Shaft and springs P.N. 1.6 including taking down unserviceable and removing from site complete all as specified and as directed.

Supply & Refilling of Carbon di Oxide Fire Extinguisher 4.5 Kg each complete all as specified and as directed.

Supply & Refilling of ABC Powder Fire Extinguisher 6 Kg Each complete all as specified and as directed.

Supply & Refilling of D-Fire Mechanical Foam Extinguisher 9 Ltr capacity each complete all as specified and as directed.

Supply & Refilling of Watermist base Fire Extinguisher 9 Ltr capacity each complete all as specified and as directed.

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

Fire Extinguisher Hose Pipe ABC Type

Fire Extinguisher Hose Pipe CO2 Type

valve kit for Fire ExtinguisherABC Type

Fire Extinguisher valve for foam type

Fire Extinguisher valve for Water type

Pressure Meter

Hanging Clip ( Hooke ) for Fire Extinguisher

Carbon di Oxide Fire Extinguisher 4.5 Kg each

ABC Powder Fire Extinguisher 6 Kg Each

D-Fire Mechanical Foam Extinguisher 9 Ltr capacity each

Watermist base Fire Extinguisher 9 Ltr capacity each

M&L for replacement of Injection check valve 3/8" diaphram for doctrine dosing pump of capacity 0.5Hp capacity complete all as specified and directed

Supply an fixing of butterfly valves including cutting of existing MS pipe of 100 mm diameter with welding of 2 nos of 100 mm dia MS flange and additional piece of MS pipe as per requirement complete all as speified and as directed

Supply an fixing of Non return valves including cutting of existing MS pipe of 100 mm diameter with welding of 2 nos of 100 mm dia MS flange and additional piece of MS pipe as per requirement complete all as speified and as directed

Supply and fixing of foot valve 100/80 mm dia including taking down existing valves and inclusive of cutting welding complete all as specified and directed

M&L for painting of 30HP motor set by applying two coats of sythetic enamel paint, scaping out old painted MS sheet base and applying a coat of red oxide primer and two coats of black syntheic enemel paint complete all as directed.

Labour only for Control Panel Fault Detection & Rectification by changing Necessary defective Components along with necessary copper wire, Lugs, Terminal etc. including testing on complete all as specified and as directed. (Note : Spare parts will be measured and paid separately under item Nos 85.00 to 93.00).

Supply only 3 Pole 32 A Power Contactor

Supply only Thermal Overload Relay ,Relay Range 14-23 A

Supply only Set of 3 Phase Indicating Lamps (Red Yellow & Blue)

Supply only Push Button Assembly with auxiliary contact Block Start & Stop

Supply only 63 Amp TPN MCB 10 KA

Supply only Single Phase Preventer

Supply only Danfoss Make KP35 Pressure Switch

Supply only Ball Valve 15 mm

M&L for PVC Insulated & PVC Shethed Multi core bright Annealed bare Copper Conductor flexible Round Cables Size 1 Sq mm 2 core FRLSH complete all as specified and as directed.

Servicing of motor pump set by disassembling, (i) Motor Front over and back cover part by part dismantling, Internal Coil Heat Varnish, Insulation Testing & refixing. (ii) Pump Part by part Dismantling, ThroughServicing, replacement of bearing & Gland Packing /Mechanical seal, re assembly with proper alignment complete all as specified and as directed.

M & L for painting of motor pump set complete all as specified and as directed

Biswas Brothers Co

SHRI JIBANDHAN PAUL

M/S S.B. CONSTRUCTION

BIJAN KUMAR DHAR

M/S L N CHOWDHURY

D.D. BROTHERS

M S ALOK SAHA