REPAIR / MAINT OF EXTERNAL WATER SUPPLY AND ALLIED WORKS AT CDA AND LAO AREA UNDER GE GUWAHATI

Excavation in trenches, not exceeding 1.5m wide and not exceeding 1.5m in depth; taking out/laying of CI/GI/DI/PPR pipe etc. not exceeding 10sq.m on plan and getting out including forming bottom surface 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 complete all as specified and as directed.

Removing excavated materials to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point, complete all as specified.

Demolition of cement concrete (unreinforced) in ground floor and paving not exceeding 15 cm thick (below or above ground level) complete all as specified and as directed.

Material & labour for cutting in existing road/pavement etc for laying of pipes etc of any size upto an approximate width of 45cm and depth 60cm and making good disturbed surfaces by complete filling with PCC Type D-2 (1:4:8) using 40 mm graded aggregate complete all as specified and directed.

Taking up or down steel tubing galvanized and connections 40mm bore from any position including descaling, cleaning internally and externally, cutting and threading of ends and refixing/relaying with position including necessary new fittings in any position on wall/ceiling/ floor etc complete all as specified and as directed.

Taking up or down steel tubing galvanized and connections 25mm bore from any position including descaling, cleaning internally and externally, cutting and threading of ends and refixing/relaying with position including necessary new fittings in any position on wall/ceiling/ floor etc complete all as specified and as directed.

Material & labour for Steel water tubing 40mm bore, galvanised iron, medium grade, ISI Marked, laid in trench and the like with all fittings such as bends, elbows, tees, short pieces, connectors, back nuts, diminishing pieces, caps plugs and unions etc., including taking down old pipe in any position, complete all as specified.

Material & labour for Steel water tubing 25mm bore, galvanised iron, medium grade, ISI Marked, laid in trench and the like with all fittings such as bends, elbows, tees, short pieces, connectors, back nuts, diminishing pieces, caps plugs and unions etc., including taking down old pipe in any position, complete all as specified.

Supply, laying, jointing and testing of 150mm bore Ductile Iron pipe, Class K-7 suitable for rubber gasket joints in any length, socket & spigot ends (ISI marked) centrifugally laid in trenches and the like including taking down old pipe in any position complete all as specified & as directed.

Supply, laying, jointing and testing of 200mm bore Ductile Iron pipe, Class K-7 suitable for rubber gasket joints in any length, socket & spigot ends (ISI marked) centrifugally laid in trenches and the like including taking down old pipe in any position complete all as specified & as directed.

Supply, laying, jointing and testing of 100mm bore Ductile Iron pipe, Class K-7 suitable for rubber gasket joints in any length, socket & spigot ends (ISI marked) centrifugally laid in trenches and the like including taking down old pipe in any position complete all as specified & as directed.

Supply and fixing Ductile Iron/cast iron, specials with spigot and socket ends fittings such as bends (any type, radius and angle), tapers any type, straight, bend, increasing, decreasing or double socket etc, tie pieces single branch, Y junction, double branch cross (all sockets or socket and spigot) collars, caps and plugs(ISI marked) etc upto 250 bore pipes complete all as specified and directed.

Material and labour for 63mm outer dia 3-layer PP-R Polypropylene random co polymer pipes SDR 7.4 & PN16 UV stablised and antimicrobial fusion welded having thermal stability for hot & cold water supply all PP-R plain & brass threaded polypropylene random fittings laid in trenches/ floor on walls/ under the road or hardstanding and proper saddle on wall at places where directed including taking out old pipes of any description complete all as specified and as directed.

All as per item No.14.00 here-in-above but outer dia pipe 50mm

All as per item No.14.00 here-in-above but outer dia pipe 32mm

All as per item No.14.00 here-in-above but outer dia pipe 25mm

Supply & fixing as in repair PP-R Gate valve (brass insert) of size 63mm outer dia of pipe complete, all as specified and as directed.

Supply & fixing as in repair PP-R Gate valve (brass insert) of size 32mm outer dia of pipe complete, all as specified and as directed.

Supply& fixing as in repair 40mm bore Gun metal Gate Valve (ISI marked) with iron wheel head, both end screwed for iron pipe, fixed to pipe & testing, complete all as specified and as directed

Supply& fixing as in repair 25mm bore Gun metal Gate Valve (ISI marked) with iron wheel head, both end screwed for iron pipe, fixed to pipe & testing, complete all as specified and as directed

Material & labour for Run lead joint suitable for 200mm bore cast iron spigot and socket end pipes and fittings including burning out old lead joint complete with all jointing materials complete all as specified and as directed.

Material & labour for Run lead joint suitable for 150mm bore cast iron spigot and socket end pipes and fittings including burning out old lead joint complete with all jointing materials complete all as specified and as directed.

Material & labour for Run lead joint suitable for 100mm bore cast iron spigot and socket end pipes and fittings including burning out old lead joint complete with all jointing materials complete all as specified and as directed.

Supply, fixing & testing as in reapir 200mm bore sluice valve cast iron body PN-1.6 heavy duty (ISI marked) long body confirming to IS-14846-2000 withiron wheel head & brass spindle and flanged both ends suitable for fixing with mild steel nuts, bolts, washers, rubber/fibre board gaskets including all jointing materials complete all as specified and directed

Supply, fixing & testing as in reapir 150mm bore sluice valve cast iron body PN-1.6 heavy duty (ISI marked) long body confirming to IS-14846-2000 withiron wheel head & brass spindle and flanged both ends suitable for fixing with mild steel nuts, bolts, washers, rubber/fibre board gaskets including all jointing materials complete all as specified and directed

Material & labour for construction of brick masonry valve pit of internal dimension 120 cm x 120 cm x 120 cm depth built in one brick thick wall using sub class 'B' bricks in CM (1:4) on 100mm thick PCC (1:4:8) type D-2 using 40mm graded aggregate as in foundation and 15 mm thick plastering in CM (1:4) both internally & externally with using extra cement make internal surface smooth finish, external plaster shall be upto 15cm below GL, providing valve pit cover made out from not less than 3mm thick MS chequred plate, including provision of hinges, handle and locking arrangement and 40x40x5mm angle iron frame fixed on top of valve pit by means of MS hold fast 40x5mm long embedded in PCC (1:2:4) typ[e B1 using 20mm graded stone aggregate block of size 230x200x100mm including two coats of anti-corrosive black paint over a coat of red oxide zinc primer with and including necessary earth work in soft/loose soil including demolition of old unserviceable existing valve pit & pit cover complete all as shown on site and complete all as specified and directed.

Taking down defective burnt out electric driven motor of capacity 15 HP working on 3 phase, 440 volts 50 Hz, duly disconnecting electric and mechanical connection from pump and transport to civil workshop, dismantling and opening the motor into parts and taking out burnt out starter winding, cleaning, servicing slots etc. drying all parts and sort out defective spares, rewinding the starter winding with suitable size of super enameled copper wire as per existing gauge including replacement of insulating materials, varnishing, heating up starter winding in heating chamber and reassembling after replacement of defective parts/spares including testing at workshop, transporting to site and reinstalled, mounting to its original position including coupling with respective pump and reconnect all disconnected connections, disconnected cable connections and mechanical support etc. including spray painting to pump & motor with one coat of existing colour paint and base paint shall be black in colour over a coat of red oxide zinc chrome primer, base should be black in colour writing SM/MES No.(size of letters as ordered) after and including preparation of old painted surfaces including testing and commissioning complete all as required and as directed. Note:- New spare as required shall be measured and paid separately as 'supply only' under following items:

Supply only Bearing DE complete all as required and as directed.

Supply only Bearing NDE complete all as required and as directed.

Supply only cooling fan suitable for 15 HP motor complete all as required and as directed.

Taking down centrifugal pump of 15 HP (Make- G&C) from its foundation duly disconnecting suction and delivery lines, transporting to civil workshop, dismantling, opening and sort out defective spares/parts and cleaning, servicing including greasing, servicing of spares after replacement of defective spares including spray painting of pump and motor with one coat of existing colour paint and base paint shall be black in colour over a coat of red oxide zinc chrome primer surfaces. Pump set shall be back to site after repairs, refixing, mounting on the base to its original foundation, testing and commissioning complete all as specified and as directed. Note:- New spare parts for replacement shall be measured and paid separately as 'supply only' under following items:

Supply only Casing wear ring

Supply only Bearing Cover

Supply only Pump Shaft

Supply only Bearing DE suitable for 15HP pump set

Supply only Bearing NDE uitable for 15HP pump set

Supply only lantern ring

Supply only shaft sleeve nut

Supply only CI gland flange

Supply only shaft coupling bolts with rubber bush

Taking down defective burnt out electric driven motor (Make-Kirlosker) of capacity 15 HP working on 3 phase, 440 volts 50 Hz, duly disconnecting electric and mechanical connection from pump and transport to civil workshop, dismantling and opening the motor into parts and taking out burnt out starter winding, cleaning, servicing slots etc. drying all parts and sort out defective spares, rewinding the starter winding with suitable size of super enameled copper wire as per existing gauge including replacement of insulating materials, varnishing, heating up starter winding in heating chamber to acheive insulation resistance at least 6Ohms and reassembling after replacement of defective parts/spares including testing at workshop, transporting to site and reinstalled, mounting to its original position including coupling with respective pump and reconnect all disconnected connections, disconnected cable connections and mechanical support etc. including spray painting to pump & motor with one coat of existing colour paint and base paint shall be black in colour over a coat of red oxide zinc chrome primer as per existing colour, base should be black in colour writing SM/MES No.(size of letters as ordered) after and including preparation of old painted surfaces including testing and commissioning complete all as required and as directed. Note:- New spare as required shall be measured and paid separately as 'supply only' under following items:

Supply only Bearing DE complete all as required and as directed.

Supply only Bearing NDE complete all as required and as directed.

Supply only cooling fan suitable for 15 HP motor complete all as required and as directed.

Taking out non clogging centrifugal pump of 15 HP (Make- Kirlosker) from its foundation duly disconnecting suction and delivery lines, transporting to authorized civil workshop, dismantling, opening and sort out defective spares/parts and cleaning, servicing, greasing, servicing of spares after replacement of defective spares including spray painting of pump and motor with one coat of existing colour paint and base paint shall be black in colour over a coat of red oxide zinc chrome primer surfaces. Pump set shall be back to site after repairs, refixing, mounting on the base to its original foundation, testing and commissioning complete all as specified and as directed. Note:- New spare parts for replacement shall be measured and paid separately as 'supply only' under following items:

Supply only Casing wear ring

Supply only Bearing Cover

Supply only Pump Shaft

Supply only Bearing DE suitable for 15HP pump set

Supply only Bearing NDE uitable for 15HP pump set

Supply only lantern ring

Supply only shaft sleeve nut

Supply only CI gland flange

Supply only shaft coupling bolts with rubber bush

Taking out suction pipe of 15 HP non clogging sewage pump alongwith foot valve from the sewage pump by the help of chain pully, rope etc dismantling the foot valve from suction pipe, clean the foot valve properly and get free from all foreign materials, reassembling the foot valve to the pipe complete and painting with black bituminus paint over the pipe and foot valve and loweringb to the sewage pump, coonect properly to the sewage pump and satisfactory running of the pump complete all as specified and as directed.

Supply and fixing in replacement power contactor 3 pole 25Amps complete all as spcecified and as directed.

Supply and fixing in replacement power contactor 3 pole 18Amps complete all as spcecified and as directed.

Supply and fixing in replacement thermal overload relay range 6-10Amp complete all as spcecified and as directed.

Supply and fixing in replacement auxiliary contact block for MNX contactor power contactor 3 pole 18Amps complete all as spcecified and as directed.

S&F in replacement Fully Automatic Star-delta starter, 15 HP, complete all as specified and directed.

Supply only calcium based granular chlorine (calcium hypo chlorine) packed in 45Kg Drum complete all as specified and directed. Make at chemical shall be approved from HQ E-in-C's branch or any other command/ADG

Supply only bleaching powder as per IS-1065 : 1989, stable dry free flowing slightly yellowish white appearance without hard lumps and visible impurities 25Kg in laminated high density polythene bag complete all as specified and directed. Make at chemical shall be approved from HQ E-in-C's branch or any other command/ADG

Supply only Alum (Aluminium potassium sulphate) in crystaline solid form shall be used for water treatment purpose complete all as specified and directed. Make at chemical shall be approved from HQ E-in-C's branch or any other command/ADG

Supply and fixing gland packing suitable for 15HP & 10HP pump complete all as specified and directed.

Taking down defective burnt out electric driven motor of capacity 30 HP working on 3 phase, 440 volts 50 Hz, duly disconnecting electric and mechanical connection from pump and transport to civil workshop, dismantling and opening the motor into parts and taking out burnt out starter winding, cleaning, servicing slots etc. drying all parts and sort out defective spares, rewinding the starter winding with suitable size of super enameled copper wire as per existing gauge including replacement of insulating materials, varnishing, heating up starter winding in heating chamber and reassembling after replacement of defective parts/spares including testing at workshop, transporting to site and reinstalled, mounting to its original position including coupling with respective pump and reconnect all disconnected connections, disconnected cable connections and mechanical support etc. including spray painting to pump & motor with one coat of existing colour paint and base paint shall be black in colour over a coat of red oxide zinc chrome primer as per existing colour, base should be black in colour writing SM/MES No.(size of letters as ordered) after and including preparation of old painted surfaces including testing and commissioning complete all as required and as directed. Note:- New spare as required shall be measured and paid separately as 'supply only' under following items:

Supply only Bearing DE complete all as required and as directed.

Supply only Bearing NDE complete all as required and as directed.

Supply only cooling fan suitable for 30 HP motor complete all as required and as directed.

Taking out non clogging centrifugal pump of 30 HP (Make- G&C) from its foundation duly disconnecting suction and delivery lines, transporting to authorized civil workshop, dismantling, opening and sort out defective spares/parts and cleaning, servicing, greasing, servicing of spares after replacement of defective spares including spray painting of pump and motor with one coat of existing colour paint and base paint shall be black in colour over a coat of red oxide zinc chrome primer surfaces. Pump set shall be back to site after repairs, refixing, mounting on the base to its original foundation, testing and commissioning complete all as specified and as directed. Note:- New spare parts for replacement shall be measured and paid separately as 'supply only' under following items:

Supply only Casing wear ring

Supply only Bearing Cover

Supply only Pump Shaft

Supply only Bearing DE suitable for 30HP pump set

Supply only Bearing NDE uitable for 30HP pump set

Supply only lantern ring

Supply only shaft sleeve nut

Supply only CI gland flange

Supply only shaft coupling bolts with rubber bush

Cleaning of mild steel OHT of 20 mtr staging height at Main pump house CDA Narangi Guwahati, capacity 25,000 Gallons, using following stages cleaning process including arrangement of necessary T&P, labour and Chemicals mechanize etc before starting process of cleaning complete all as specified and as directed. (a) Mechanized Dewatering (b) Sludge Removal (c) High Pressure Cleaning (d) Vaccum cleaning (e) Antibacterial spray (f) UV radiation. (g) Painting two coats of black bituminous paint on internal surface of Over Head water reservoir after cleaning the tank. Note:- (i) The entire work shall be carried out by well experienced personal/firms having experience of similar nature of work. (ii) Entire T&P and all Safty measure during the work shall be arranged by the contractor at his own cost. (iii) "Date of cleaning" shall be written over the outer surface at appropriate level to be decided by Engineer-in-charge with synthetic enamel paint of letteres not less than 100mm height and the cost of the same shall be deemed to include in the quoted unit rate of the contractor.

Cleaning of UG sump at main pump house CDA Narangi Guwahati, capacity 50,000 Gallons, using following stages cleaning process including arrangement of necessary T&P, labour and Chemicals mechanize etc before starting process of cleaning complete all as specified and as directed. (a) Mechanized Dewatering (b) Sludge Removal (c) High Pressure Cleaning (d) Vaccum cleaning (e) Antibacterial spray (f) UV radiation. (g) Painting two coats of black bituminous paint on internal surface of Over Head water reservoir after cleaning the tank. Note:- (i) The entire work shall be carried out by well experienced personal/firms having experience of similar nature of work. (ii) Entire T&P and all Safty measure during the work shall be arranged by the contractor at his own cost. (iii) "Date of cleaning" shall be written over the outer surface at appropriate level to be decided by Engineer-in-charge with synthetic enamel paint of letteres not less than 100mm height and the cost of the same shall be deemed to include in the quoted unit rate of the contractor.

Opening man hole cover of filter plant and taking out care fully all old filter media and PVC strainer from filter shell, removing unserviceable materials to a safer distance n.exe 50m and cleaning the filter bed thoroughly with clean water to remove all dirt, scale, mud ect including stariner, pipe line complete for 5000 GPH capacity filter plant and replace the unserviceable filter media as required complete all as specified and as directed. Note : New filter media shall be measured and paid seperately under the respective item

Supply and fixing new life manganese Di-Oxide (Mno2) compound of size 1x1/2 inch filled in layers complete as specified and as directed.

Supply and filling iron removal chemical anthracite/ cabofilt coal for 8000/5000 GPH capacity filter plant complete all as specified and as directed.

Supply and fixing gravels of size 20x12mm filled complete as specified and as directed for 5000/8000 GPH capacity filter complete as specified and as directed.

Supply and fixing gravels of size 12x6mm filled complete as specified and as directed for 5000/8000 GPH capacity filter complete as specified and as directed.

Supply and fixing gravels of size 6x3mm filled complete as specified and as directed for 5000/8000 GPH capacity filter complete as specified and as directed.

Supply and fixing gravels of size 3x1.5mm filled complete as specified and as directed for 5000/8000 GPH capacity filtercomplete as specified and as directed.

Supply and fixing 10-32mesh fine sand filled in layers complete as specified and as directed for 5000/8000 GPH capacity filter complete as specified and as directed.

Supply, fixing & testing butterfly valve cast iron body for 80 mm bore pipe as in repair complete all as specified and directed

Supply, fixing & testing butterfly valve cast iron body for 100 mm bore pipe as in repair complete all as specified and directed

Supply and fixing mild steel screw bolts (machine made) with hexagonal or square heads at one end and screwed the other, or screwed both ends, each screwed end to be fitted with washers and one hexagonal or square nut, exc 15 cm but not exc 22 cm long and dia of neck 16 to 20mm, complete all as specified & directed.

Supply and fixing in repair submersible cable of copper conductor 3 core 6 Sqmm, 1100 volts, flat cable, PVC insulated for submersible motor including necessary testing complete all as specified and directed.

Supply and fixing as in repair gasket 300mm size complete all as specified and directed.

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