REPAIR/MAINT OF PUMP HOUSE, OVER HEAD TANK UNDERGROUND SUMP AND FILTRATION PLANT OF PUMP HOUSE CENTRIFUGAL, SUBBERSIBLE, MONO BLOCK AND STARTER AT VARIOUS PLACE, REPLACEMENT OF WATER DISTRIBUTION PIPE LINE AND ALLIED WORK AT SECT V TO XI AT AGE CHARD

Amount

Supply and fix in replacement the starter submersible pump motor starter fully automatic star delta operated enclosed in sheet enclosure type for submersible pump motor AC-3 rating 50 HZ 3 phase of capacity 15 HP with single phase preventer complete including making necessary electrical connections complete all specified and directed by Engr-in-Charghe. Make- L&T /Schneider/Havells Note:these starter should be accomodate in existing panel and should fixed properly as previous one rating and space.

Supply and fix in replacement submersible pump motor starter fully automatic star delta operated enclosed in sheet enclosure type for submersible pump motor AC-3 rating 50 HZ 3 phase of capacity 20HP complete including making necessary electrical connections complete all specified and directed by Engr-in-Charghe. Make- L&T /Schneider/Havells. Note:these starter should be accomodate in existing panel and should fixed properly as previous one rating and space.

Supply and fix in replacement centrifugal /monoblock pump motor starter fully automatic star delta operated enclosed in sheet enclosure type for submersible pump motor of capacity 10-15 HP, AC-3 rating 50 HZ 3 phase complete all specified and directed by Engr-in-Charghe. Make: Havells/schneider/L&T Note:these starter should be accomodate in existing panel and should fixed properly as previous one rating and space.

M&L in repairs construction for water level indicator of existing size made out of MS Sheet of 1.6mm thick complete including painting with super enamelled paint of white colour duly marked the water levels in red colour showing the levels of water inside the overhead tank including aero of existing size painted with red colour and fixed at the height of approx 50 feet testing complete all specified and directed by Engr-in-Charghe

Cutting including fixing of existing 100 mm bore GI pipe in position for taking down addition alteration or for repair complete all as specified and directed.

Cutting including fixing of existing 80 mm bore GI pipe in position for taking down addition alteration or for repair complete all as specified and directed.

Screwing ( Threads making ) of existing galvanised steel tubing of 100 mm bore for addition alteration extending or reducing in length for repair all as specified and directed.

Screwing ( Threads making ) of existing galvanised steel tubing of 80 mm bore for addition alteration extending or reducing in length for repair all as specified and directed.

S&F in repairs 50 mm gun metal, globe or gate valve with iron wheel head, screwed both ends for iron pipe and fixed to pipe complete all specified and directed by Engr-in-Charghe

S&F in repairs 40 mm gun metal, globe or gate valve with iron wheel head, screwed both ends for iron pipe and fixed to pipe complete all specified and directed by Engr-in-Charghe

S&F in repairs 25 mm gun metal, globe or gate valve with iron wheel head, screwed both ends for iron pipe and fixed to pipe complete all specified and directed by Engr-in-Charghe

S&F in repairs 20 mm gun metal, globe or gate valve with iron wheel head, screwed both ends for iron pipe and fixed to pipe complete all as specified and directed.

Supplying & laying in replacement of trenches 100 mm nominal bore, medium grade, galvanised coated steel tube conforming to IS 1239 (Part-1): 2004 including all fittings conforming to IS 1239 (Part-2): 2011 complete all as specified and as directed.

Supplying & laying in replacement of trenches 80 mm nominal bore, medium grade, galvanised coated steel tube conforming to IS 1239 (Part-1): 2004 including all fittings conforming to IS 1239 (Part-2): 2011 complete all as specified and as directed.

S&F in repairs MS flange heavy duty complete with nuts bolts and washers 06 nos suitable for 100 mm dia GI pipe complete all as specified and directed.

S&F in repairs MS flange heavy duty complete with nuts bolts and washers 06 nos suitable for 80 mm dia GI pipe complete all as specified and directed.

M&L in replacement valve chamber cover with frame and locking arrangement made out of angle iron or other section and MS sheet with welding of holdfast etc. including hinges fabricated MS is not less than the thickness of frame all as specified including preparation of surfaces and applying two coats of synthetic enamel paint over a coat of red oxide primer complete all as specified and directed.

Material and labour for construction of brick masonry valve pit of size 60 cm x 60 cm x 60 cm (internal dimensions) with one brick thick wall in cement mortar (1:4) on 100 mm thick PCC (1:4:8) type D2 (using 40 mm graded aggregate) as in foundation, 15 mm thick rendering in cement mortar (1:4) internally and externally up to 15 cm below ground level including, provision of valve pit cover made out of 3 mm thick MS sheet welded with 40 x 5 mm thick flat iron all round, on ISA 40 x 40 x 6 mm frame, fixed with hold fast 150 mm long, embedded in PCC (1:2:4) type B1 (Block size 230 x 200 x 100 mm) with necessary hinges, handles, locking arrangement, including applying two coats of white wash on plastered surfaces and two coats of bituminious paint over a coat of red oxide primer on steel surfaces and ncessary earth work in soft/loose soil complete all as specified and directed.

Material and labour for construction of brick masonry valve pit of size 90 cm x 90 cm x 90 cm (internal dimensions) with one brick thick wall in cement mortar (1:4) on 100 mm thick PCC (1:4:8) type D2 (using 40 mm graded aggregate) as in foundation, 15 mm thick rendering in cement mortar (1:4) internally and externally up to 15 cm below ground level including, provision of valve pit cover made out of 3 mm thick MS sheet welded with 40 x 5 mm thick flat iron all round, on ISA 40 x 40 x 6 mm frame, fixed with hold fast 150 mm long, embedded in PCC (1:2:4) type B1 (Block size 230 x 200 x 100 mm) with necessary hinges, handles, locking arrangement, including applying two coats of white wash on plastered surfaces and two coats of bituminious paint over a coat of red oxide primer on steel surfaces and ncessary earth work in soft/loose soil complete all as specified and directed.

Supply and fix in replacement of submersible copper cable of size 10 sq mm 3 core all as specified and as directed.

Supply and fix in repair flange less butter fly valve quarter turn 150 mm bore lever operated for pressure filter including all fixing materials such as nuts, bolts and washers of required size all as specified.

Supply and fix in repair flange less butter fly valve quarter turn 100 mm bore lever operated for pressure filter including all fixing materials such as nuts, bolts and washers of required size all as specified.

Supply and fix in repair flange less butter fly valve quarter turn 80 mm bore lever operated for pressure filter including all fixing materials such as nuts, bolts and washers of required size all as specified.

Supply and fix 150 mm bore sluice valves cast iron body PN-1.0 complete with brass spindle and hand wheel including joints and fixing material including taking down old unsv sluice valve complete all as specified and directed.

Supply and fix 100 mm bore sluice valves cast iron body PN-1.0 complete with brass spindle and hand wheel including joints and fixing material including taking down old unsv sluice valve complete all as specified and directed.

Supply and fix 80 mm bore sluice valves cast iron body PN-1.0 complete with brass spindle and hand wheel including joints and fixing material including taking down old unsv sluice valve complete all as specified and directed.

M&L for repairing existing chemical dosing pump simple diaphragm type coupled with 0.5 HP 440 Volts AC 1440 RPM motors suitable for from 100 ltrs capacity dosing tank of any specification and making dosing pump , strainer and siphon valve and pressure filt valve etc functional complete all specified and directed by Engr-in-Charghe at site. . Note : Rates for PVC wire wooven (re-inforced) heavy duty flexible pipe from chemical dozing pump to venturi , along with ferrul and non return valve,repair to pump and motor etc is deemed to be inclcuded in the quoted rates. Note :- Old unsv pump moter deposite to store yard complete direction by Engr-in-charge

M&L for taking out of defective booster pump/centrifugal pump 10-15 HP and taking out burnt out windings,cleaning of motor rotor and stator with cleaning material. Rewinding of motor with super enamelled copper wire of existing gauge including replacement of unserviceable parts including transportation. Assembling of motor and testing complete to the satisfaction of Engineer-in -Charge. Note: all cost for repair/replacement part of accesories for the motor/pump deemed to included in quoted rate no separate cost will be provided.

M&L for taking out of defective submersible pump set of any discharge capacity from borewell including dismantling/taking out column pipe of any size/length alongwith submersible cable,nuts,bolts etc and lowering down the pump set alongwith coloumn pipe after carrying out necessary repairs/replacement of defective parts including replacement of old gaskets and testing on completion all as specified and directed.

M&L for submersible motor 15/20 HP and taking out burnt windings,cleaning of motor rotor and stator with cleaning material,carrying out necessary machining work such as grinding, metaling and polishing and rewinding of motor with stove enamelled copper wire of existing gauge,replacement of unserviceable parts as required. Assembling of motor and testing complete upto entire satisfaction of Engineer-in -Charge for 15/20 HP complete all as specified and directed. Note :- Spare required shall be measured and paid separately under respective item here in after

Supply only motor bush upper and lower in repair spare parts of submersible motor of capacity 15 to 20 HP of any make & model complete all as specified and directed

Supply only Rotor bearing sleeve upper and lower in repair spare parts of submersible motor of capacity 15 to 20 HP of any make & model complete all as specified and directed

Supply only Sand guard in repair spare parts of submersible motor of capacity 15 to 20 HP of any make & model complete all as specified and directed

Supply only Motor thrust plate assy in repair spare parts of submersible motor of capacity 15 to 20 HP of any make & model complete all as specified and directed

Supply only Motor coupler sleeve with key in repair spare parts of submersible motor of capacity 15 to 20 HP of any make & model complete all as specified and directed

M&L for development existing of bore well of depth upto 120 mtrs for 12-24 hours with air compressor machine at desired air pressure till clear sand free potable water is obtained from the bore well including taking out submersible pump motor, cable and column pipe of any description or size and re-lowering the pump set alongwith existing column pipes, submersible cable of any make/size and nuts bolts & washers of suitable size/length including making all electrical connectios after completion of developemnt work and testing for required yeild of ground water all as directed by Engr-in-Charge at site. Note:the aircompressor if required beyond the 12 hours for proper yield of water from borewell then it should be deemed in quoated rate by the contractor.

M&L for taking out and down after repair of submersible pump motor, cable and column pipe of any description or size and re-lowering the pump set alongwith existing column pipes, submersible cable of any make/size including replacement as per requirement for nuts bolts & washers of suitable size/length including making all electrical connectios after completion of developemnt work and testing for required yeild of ground water all as directed by Engr-in-Charge at site. Note: Moter and column pipe and cable measurement and paid seperately.

Supply, install testing and commissioning submersible in replacement of pump, electric driven 415V, Three phase 20 HP suitable for 100mm dia column pipe including tail piece and flange (Casing pipe size 350mm) having discharge capacity 16 LPS at 65.00 metre head alongwith suitable capacity of 20 HP electric motor all as specified and directed. Make : kirloskar/ KSB/CG

S&F in replacement of Booster pumps 15 HP for 440 V, 3 Phase, 50 Hz Confirming to IS- 12469 :1988 With CI Casing bronze impeller and stainless steel shaft mounted on heavy duty bearings suitable for 440 volts, 3 phase, 50 Hz 30mhead, any discharge all as specified and as directed by Engr in charge for supply of distribution line beween pump house to diffrent sector incld neccessary replacement of burn out of items. Note :- Old unsv pump moter deposite to store yard complete direction by Engr-in-charge

Excavating in trenches not exceeding 1.5 m wide and not exceeding 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. or for cable laying or water supply pipes lines etc or not exceeding 10 sqm on plan and getting out in soft/ loose soil complete all as specified and as directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 cm in soft/ loose/ hard/ dense soil complete all as specified and as directed.

Removing excavated material (soils) not exceeding 50 m and depositing where directed at a level n exc. 1.5 m above the starting point complete all as specified and as directed.

M&L for repairs/rectification of leakage in UG cast iron /Galvanised iron pipe by means of choking lead wool/ pig lead or tightening of GI fittings complete including excavation and earth work for exposing the joints and working space on the site, returning, filling in and making good to the existing earth level of the surroundings after repair for the 100/110 mm bore sizes of pipes all as specified. Note;- (i) Rectification of leakage shall be attended and rectified by the contractor on the same day of reporting by the Engr-in-charge. Non rectification of leakage of pipe line shall be viewed as serious lapse on contractor's part and penal charges as Rs 100/- per complaint (ii) Supply only Lead wool/pig lead shall be measured and paid seperately. (iii) In case excavation beyound 1 mtr from both side of the joint is required the same shall be measured and paid separately under respective item. Note:- (i) Rectification of leakage shall be attended and rectified by the contractor on the same day of reporting by the Engr-in-charge. Non rectification of leakage of pipe line shall be viewed as serious lapse on contractor's part and penal charges as Rs 100/- per complaint shall be imposed on contractor.(ii) Supply only Lead wool/pig lead shall be measured and paid seperately.(iii) In case excavation beyound 1 mtr from both side of the joint is required the same shall be measured and paid separately under respective item. (iv) GI/PPR pipes alongwith fittings shall be measured and paid separately.

M&L for repairs/rectification of leakage in UG cast iron /Galvanised iron pipe by means of choking lead wool/ pig lead or tightening of GI fittings complete including excavation and earth work for exposing the joints and working space on the site, returning, filling in and making good to the existing earth level of the surroundings after repair for the 80/90 mm bore sizes of pipes all as specified. Note;- (i) Rectification of leakage shall be attended and rectified by the contractor on the same day of reporting by the Engr-in-charge. Non rectification of leakage of pipe line shall be viewed as serious lapse on contractor's part and penal charges as Rs 100/- per complaint (ii) Supply only Lead wool/pig lead shall be measured and paid seperately. (iii) In case excavation beyound 1 mtr from both side of the joint is required the same shall be measured and paid separately under respective item. Note:- (i) Rectification of leakage shall be attended and rectified by the contractor on the same day of reporting by the Engr-in-charge. Non rectification of leakage of pipe line shall be viewed as serious lapse on contractor's part and penal charges as Rs 100/- per complaint shall be imposed on contractor.(ii) Supply only Lead wool/pig lead shall be measured and paid seperately.(iii) In case excavation beyound 1 mtr from both side of the joint is required the same shall be measured and paid separately under respective item. (iv) GI/PPR pipes alongwith fittings shall be measured and paid separately.

M&L for repairs/rectification of leakage in UG cast iron /Galvanised iron pipe by means of choking lead wool/ pig lead or tightening of GI fittings complete including excavation and earth work for exposing the joints and working space on the site, returning, filling in and making good to the existing earth level of the surroundings after repair for the 50/63/40/32 mm bore sizes of pipes all as specified. Note;- (i) Rectification of leakage shall be attended and rectified by the contractor on the same day of reporting by the Engr-in-charge. Non rectification of leakage of pipe line shall be viewed as serious lapse on contractor's part and penal charges as Rs 100/- per complaint (ii) Supply only Lead wool/pig lead shall be measured and paid seperately. (iii) In case excavation beyound 1 mtr from both side of the joint is required the same shall be measured and paid separately under respective item. Note:- (i) Rectification of leakage shall be attended and rectified by the contractor on the same day of reporting by the Engr-in-charge. Non rectification of leakage of pipe line shall be viewed as serious lapse on contractor's part and penal charges as Rs 100/- per complaint shall be imposed on contractor.(ii) Supply only Lead wool/pig lead shall be measured and paid seperately.(iii) In case excavation beyound 1 mtr from both side of the joint is required the same shall be measured and paid separately under respective item. (iv) GI/PPR pipes alongwith fittings shall be measured and paid separately.

M&L for repairs/rectification of leakage in UG cast iron /Galvanised iron pipe by means of choking lead wool/ pig lead or tightening of GI fittings complete including excavation and earth work for exposing the joints and working space on the site, returning, filling in and making good to the existing earth level of the surroundings after repair for the 25/20 mm bore sizes of pipes all as specified. Note;- (i) Rectification of leakage shall be attended and rectified by the contractor on the same day of reporting by the Engr-in-charge. Non rectification of leakage of pipe line shall be viewed as serious lapse on contractor's part and penal charges as Rs 100/- per complaint (ii) Supply only Lead wool/pig lead shall be measured and paid seperately. (iii) In case excavation beyound 1 mtr from both side of the joint is required the same shall be measured and paid separately under respective item. Note:- (i) Rectification of leakage shall be attended and rectified by the contractor on the same day of reporting by the Engr-in-charge. Non rectification of leakage of pipe line shall be viewed as serious lapse on contractor's part and penal charges as Rs 100/- per complaint shall be imposed on contractor.(ii) Supply only Lead wool/pig lead shall be measured and paid seperately.(iii) In case excavation beyound 1 mtr from both side of the joint is required the same shall be measured and paid separately under respective item. (iv) GI/PPR pipes alongwith fittings shall be measured and paid separately.

Supply only pig lead for rectification of leakage of joints of CI pipe all as specified.

Supplying & laying in repair trenches 100 mm nominal bore, medium grade, galvanised coated steel tube conforming to IS 1239 (Part-1): 2004 including all fittings conforming to IS 1239 (Part-2): 2011 complete all as specified and as directed.

Supplying & laying in repair trenches 80 mm nominal bore, medium grade, galvanised coated steel tube conforming to IS 1239 (Part-1): 2004 including all fittings conforming to IS 1239 (Part-2): 2011 complete all as specified and as directed.

Supplying & laying in repair trenches 50 mm nominal bore, medium grade, galvanised coated steel tube conforming to IS 1239 (Part-1): 2004 including all fittings conforming to IS 1239 (Part-2): 2011 complete all as specified and as directed.

Supplying & laying in repair trenches 40 mm nominal bore, medium grade, galvanised coated steel tube conforming to IS 1239 (Part-1): 2004 including all fittings conforming to IS 1239 (Part-2): 2011 complete all as specified and as directed.

Supplying & laying in replacement of trenches 32 mm nominal bore, medium grade, galvanised coated steel tube conforming to IS 1239 (Part-1): 2004 including all fittings conforming to IS 1239 (Part-2): 2011 complete all as specified and as directed.

Supply and fix in replacement of 25 mm dia of water tubing to tube medium grade galvanised with all fittings laid in trenches complete all as specified and directed.

Supply and fix in replacement of 20 mm dia of water tubing to tube medium grade galvanised with all fittings laid in trenches complete all as specified and directed.

M&L in repairs for run lead joint for spigot and socket cast iron pipes and fittings of nominal bore 100 mm complete all as specified and as directed.

M&L in repairs for run lead joint for spigot and socket cast iron pipes and fittings of nominal bore 80 mm complete all as specified and as directed.

S& F for cutting of CI/DI pipe150/ 100 mm dia carefullyfor new connection of distribution in position inserting fittings such as bend, tee, socket pieces, collar etc; complete all as specified and as directed.Note: necessary fitting for insertion of hole in DI pipe is incld in the above item no extra cost will be paid complete all as specified and as directed

Labour for collecting complaints in writting pertaining to external water supply system from concern JE at AGE Charduar office for various areas under AGE Charduar in writting during the hours as fixed by the Engr-in-Charge and detecting faults in distribution system/delivary or rising main system of any size or bore and any type/size of pipes laid in trenches/with wall/on floor/ to overhead tanks of any capacity/size at any height in any area under AGE Charduar and rectify the fault to restore the water supply services in all respect and upto entire satisfaction of Engr-in-Charge and comprising of the followings:-(a) Person collecting the complaints/deputed by the contractor shall have sound knowledge of repairing/maintenance of CI/DI/PPR pipes and he will visit the site to assess the actual requirement/nature of fault in water supply system and also shall repair minor repairs to PP-R pipelines/CI/DI/GI pipe lines of any dia sponteneously. (b) If any complaint left unattended by the the contractor ,penalty @ Rs 1000/- per complaint per day be imposed on contractor. (c ) Contractor shall be resposible to communicate the concern JE/AGE E/M regarding any major breakdown/fault within 30 minutes if the problem is of specific nature. (d) Contractor shall be resposible for providing suitable transport to person deputed by him and shall be bound to reach at site within 30 minutes after receiving the complaint. (e ) Necessary T&P required to repairs all defects/faults shall be provided by the contractor and cost shall be deemed included in unit rate quoted by the contractor. (f) Requirement of specific spares/stores such as CI/DI/PPR pipes and their respective fittings, sluice/gate and spares of water supply plants/equipments,excavation/earth work if required will be given by the contractor well in advance to Engr-in-charge/JE E/M.

Supply and Fixing in replacement of submersible cable 10 sqmm 3 core flat cable copper conductor, ISI marked complete all as specfied and directed. Make : Finolex/ Havells/ Polycab 50 rm

Supply and lay in replacement of Pipes ERW Steel including specials, nominal dia 80 mm as per IS 3589 (1981) thickness 6.0 mm both end flanged 3.0 mtr long fitted with flanges at both ends made out of heavy grade pipes of not less than 6mm wall thickness ISI marked IS:3589-1981 complete with bolts,nuts,gasket etc as required at site complete all as specified and directed.

Supply, install testing and commissioning in replacement of submersible pumpset complete , electric driven 415V, Three phase 15/20 HP suitable for 100mm dia column pipe including tail piece and flange (Casing pipe size 350mm) having discharge capacity 16 LPS at 65.00 metre head alongwith suitable capacity of 15/20 HP electric motor all as specified and directed. Make : kirloskar/ KSB/CG Note :- Old unsv pump moter deposite to store yard complete direction by Engr-in-charge

Supply and fix in replacement of Valve, reflux, with by-pass Arrangement (NRV), 150 mm (6”) dia etc complete all as specified and directed.

Material and labour for construction of brick masonry valve pit of size 90cm x 90cm x 90 cm (internal dimensions) with one brick thick wall in cement mortar (1:4) on 100 mm thick PCC (1:4:8) type D2 (using 40 mm graded aggregate) as in foundation, 15 mm thick rendering in cement mortar (1:4) internally and externally up to 15 cm below ground level including, provision of valve pit cover made out of 3 mm thick MS sheet welded with 40 x 5 mm thick flat iron all round, on ISA 40 x 40 x 6 mm frame, fixed with hold fast 150 mm long, embedded in PCC (1:2:4) type B1 (Block size 230 x 200 x 100 mm) with necessary hinges, handles, locking arrangement, including applying two coats of white wash on plastered surfaces and two coats of bituminious paint over a coat of red oxide primer on steel surfaces and ncessary earth work in soft/loose soil complete all as specified and directed.

Draining out water from sedimentation tank, filter bed, filtered water tank after opening sluice valves, plugs etc and cleaning the walls / bottom surface with the help of wire brushes and other cleaning device to remove sludge and cleaning with water for making ready to paint incl channel etc of capacity 20000 Gallon per day complete all as specified and directed.

Taking out filter media carefully from rapid sand gravity filter bed and depositing at a distance not less 50 mtr where directed, cleaning and removing sludge/silt deposited on the vessels of filter media to a distance and making ready all the surface to paint complete all as specified and directed.

Material and labour for applying two coats of approved quality bituminous paint lead freesuitable for potable water to internal surface of the sedimentation tank, filter bed & filtered water tank incl all nozzle, pipes etc with anti corrosive bituminous paint inside the gravity filter all as specified and directed

Dismantling /taking out of nozzles made out of 80mm/100 mm dia GI tubing by unscrewing thread/cutting etc from filter bed and sedimentation tanks and kept aside for re-use complete all specified and directed by Engr-in-Charghe

Re-fixing serviceable GI nozzles (lateral and header pipe) made out of 80mm/100 mm dia as dismantled item No 4 here-in-before with welding in proper position after cleaning /desilting and painting the same properly including black bituminous paint lead free complete all as specified and directed. Location:sonaipam ,Amaribari (Note : Cost of necessary welding if required at site is deemed to be included in the quoted rates)

Supply and fix in replacement of GI nozzles in filter bed made out of 80mm dia GI pipe of length 1.1 Mtr each one end threaded and making requisite nos of holes as per exisitng and fixing with lateral pipe of size 150 mm in filter bed complete all as specified and as directed. (Note : Cost of necessary welding if required at site is deemed to be included in the quoted rates)

Supply and fix in replacement of GI nozzles made out of 100 mm GI pipe of length 0.6 Mtr each in sedimentation tank complete with provision of cap on top (as per existing) and fixing with 150 mm GI pipe (lateral and Header pipe) and painting the same properly with black bituminous paint complete all as specified and directed. Location:sonaipam ,Amaribari (Note : Cost of necessary welding if required at site is deemed to be included in the quoted rates)

Dismantling and taking out old (lateral and header pipe) of size 150mm dia GI pipe incl fittings from filter bed/sedimentation tank for cleaning or removing to store complete all as specified and directed.

Re-fixing (lateral and header pipe) GI tubing & fitting 150mm bore as dismantelled against item No 46 here-in-before after cleaning/ de-scaling properly and painting the same with black bituminous paint complete all specified and directed.

S&F in repair GI tubing medium grade 150 mm dia as lateral and header pipe complete with heavy duty fittings as per existing/as required at site and painting the same with black bituminous paint complete all as specified and directed.

Dismantling of GI pipe 100mm dia connection from the pressure filter plant of capacity 9600 GLH, opening the cover plate of filter chamber by unscewing/unbolting it and removal of filter media, depositing the same to a distance not exceeding 100 mtr and refilling gravel grade wise to the bed of filtration plant after washing/cleaning complete re-fixing the pipes to its original position after replacement of gasket of cover plate including necessary nut bolts as required complete all as specified and directed.

Material and labour for painting to external surface of iron removal chamber , pre filter chamber and oxidation chamber including pipes of complete filtration plant of capacity 10000 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 directed.

M&L for opening of PVC strainers (nozzels) from pressure filters bed cleaning all PVC strainers throughly and removing all deposits and refixing of serviceable strainers complete all as specified and as directed Location.

S&F in replacement of PVC nozzle (Dom type) as per sample for pressure filter and iron removal filter complete all as specified. Location: Phulbari/harchura

Material and labour washing/ cleaning the existing, MNO2 etc with using suitable chemical for re-use and re-filling in the chamber complete all specified and directed by Engr-in-Charghe.

Supply and lay MNO2 compound duly treated in pressure filter plant complete all as specified and directed.

Supply and lay in layers carbofelt compound duly treated in pressure filter cum iron removal plant complete to the satisfaction of engr-in-charge all as specified and as directed.

M&L for painting to external surfaces of iron removal chamber, pre filter chamber, oxidation chamber including pipes complete of filtration plant with two coats of synthetic enamel paint of approved colour including necessary preparation of surface by means of scraping , brushing, cleaning all as specified and directed.LOCATION : HARCHURA & PHULBARI PH

Supply and laying in layers pea gravels duly cleaned and washed of 40mm to 20mm grades complete all as specified and directed (Location: Harchura,Phulbari,sonaipam ,Amaribari)

Supply and laying in layers pea gravels duly cleaned and washed of 20mm to 12mm grades complete all as specified and directed (Location: Harchura,Phulbari,sonaipam ,Amaribari)

Supply and laying in layers pea gravels duly cleaned and washed of 12 mm to 6 mm grades complete all as specified and directed (Location: Harchura,Phulbari,sonaipam ,Amaribari)

Supply and laying in layers pea gravels duly cleaned and washed of 6 mm to 3 mm grades complete all as specified and directed (Location: Harchura,Phulbari,sonaipam ,Amaribari)

M &L for cleaning the aeration tower including scrapping, scrubbing the deposited silt and washing properly including painting with two coats of black bituminous paint all as specified and directed.

Supply and fix in repair gun metal check nut (as per sample) with inner threads suitable for 100 mm sluice valves all as directed at site.

Supply and fix in repair gun metal check nut (as per sample) with inner threads suitable for 80 mm sluice valves all as directed at site.

Supply and laying in layers dry and cleaned filter sand of source 'Barakar River' in uniform layers, complete all as specified and directed.

M/S RUSTAM ALI (BID ID -3383598)

Raj Enterprise (BID ID -3383499)