83964/E8 PROVN OF IRON REMOVAL PLANT AT PUMP HOUSE NO 10 AT AF STN CHABUA UNDER GE (AF) CHABUA

Amount

Supply and installation of iron removal filter plant with the following items :- (a) Supply, installation, testing, erection and commissioning of down flow multi grade iron removal cum pressure filteration plant having capacity 10000 GPH, with minimum internal size 2500 mm dia X 1830 mm height, shell thickness 8 mm, bed plate 10 mm and dish end 12 mm consisting of one vertical cylindrical mild steel pressure vessel with dished ends, vertical type with one set of 100 mm dia nominal bore frontal mild steel pipe work for inlet, outlet, back washing facilities and rinse line and 5 Nos cast iron lever operated slimseal butterfly valves complete - 01 No NOTE :- (i) The frontal pipe line of 100 mm dia as required. (ii) Cast iron butterfly valve of 100 mm dia - 05 Nos (iii) Filter media (sand, gravels) and catalytic media - 185 cft (iv) Under bed plate system fitted with double nut type PVC strainer made from LDPE - 450 Nos (approx) (v) Air compressor for proper aeration and back washing facilities. (vi) Pressure gauge and sampling cock - 2 sets (for raw water and filter water), air vent system, back washing facilities. (vii) Coagulation system (viii) Electronic flow meter 100 mm dia - 01 No (ix) CI all flange, tee 100 mm x 100 mm - 02 Nos (x) GI pipe 100 mm N B approx - 10 metres (xi) GI bend 100 mm - 02 Nos (xii) The design pressure as per IS-2825, Test pressure - 4.5 Kg/cm2 and working pressure - 3.5 kg/cm2

Item No.1 Contd…. (xiii) The iron content after treatment shall be less than 0.30 mg/litre irrespective of iron content as Fe in raw water of bore well. (xiv) The job inludes all necessary civil works such as surface dressing upto 3 metres from foundation, PCC platform, RCC foundation, drain, pit etc as required. (xv) The vessel shall be painted internally with 2 coats of food grade anticorrosive and non-toxic black bituminous paint (compatible with drinking water) and external surfaces shall be painted with two coats of synthetic enamel paint over a coat of red oxide primer incl pipe line etc. (xvi) Chemical analysis test result will be checked through RRL or any other Govt Organisation, before & after complete installation of iron removal plant in all parameters of water within 10 days. (xvii) Chemical analysis test result will be checked by GE. (xviii) Change in dimensions of IRP can be allowed unless there is no reduction in the volume of the shell. (b) Supply, installation, testing and commissioning of Air Compressor Reciprocating type, horizontal model, of capacity 22 CFM at 12 Kg/Cm2 working pressure coupled with with electric motor of suitable capacity (not less than 5 HP), 3 phase, 50 Hz complete with air receiver, safety valve including copper cable connection from main panel to starter and starter to motor, DOL starter, panel, PCC/RCC foundation as per manufacturer's specifiactions, earthwork and providing 15 mm dia GI pipe medium grade from compressor to oxidation chamber including air filter etc all as specified by manufacturer - 01 No

Item No.1.01 Contd…. Supply, installation, testing and commissioning of oxidation chamber having capacity 10000 GPH, consisting of one vertical cylindrical mild steel pressure vessel with dished ends, having size 1000 mm dia x 1500 mm height (minimum internal dimensions) and total height of 2260 mm, conforming to IS-2062, thickness of body, dish & bed plate - 6 mm x 8 mm x 8 mm, vertical type with one set of 100 mm dia nominal bore frontal mild steel pipe work for inlet, outlet, back washing and 03 Nos, 100 mm bore cast iron sluice valves complete all as specified and directed. NOTES:- (i) The plant shall be designed for a design flow of 10000 GPH (ii) Thechamber shall be designed for working pressure shall be 3-4 Kg/sqmm (iii) The vessel must be filled up with specially graded MnO2, gravels and hard coke catalyst media of quantity, minimum 47 cft with supporting under bed media. (iv) The oxidation chamber shall have first fill of filter media as per manufacturer's instuctions. The quoted rate for Oxidation Chamber shall be deemed to be inclusive of MnO2 (purity not less than 65%), filter media, hard coke, all pipe lines, tees, bends, flange etc. (v) The job includes all necessary civil works such as surface dressing upto 3 mtr from foundation, PCC platform, RCC foundation, drain, pit etc. (vi) The vessel shall be painted internally with 2 coats of food grade anticorrosive and non-toxic black bituminous paint (compatible with drinking water) and external surfaces shall be painted with two coats of synthetic enamel paint over a coat of red oxide primer incl pipe line etc. (vii) Change in dimensions of oxidation chamber can be allowed unless there is no reduction in the volume of the shell.

Supply, installation, testing and commissioning of high pressure single head gear motorated adjustable liquid chlorine dosing pump with accessories for (including lead tubing, nuts, injector, check valve, gate valve etc) including connected to 100 ltr PE/FRP tank with lead, level gauge and agitator with shaft and blade in SS 316 (PRP/Epoxy coated)/plastic mounted on tank complete all as specified and directed.

Supply laying in trenches ductile iron (DI) pressure pipe with spigot and socket ends, centrifugally cast , class K-7, confirming to IS : 8329-2000 with internal metallic zinc coating and external black bitumen coating suitable for push on joint (tyton) in any length of 100 mm bore complete all as specified and directed . Note: the unit rate (s) includes for all jointing & jointing material)

Supply & fixing in replacement cast iron body sluice valve heavy duty class ‘PN-1.6’ of 150 mm bore, ISI marked with IS 14846, both flanged ends and drilled, with forged brass spindle, CI gate with brass ring, non rising type, cast iron wheel handle, cast iron cap, complete with 3mm thick neoprene rubber gasket joint and nuts, bolts (high tensile), washers etc, and testing, complete, all as specified & directed.

Supply & fixing in replacement cast iron body sluice valve heavy duty class ‘PN-1.6’ of 100 mm bore, ISI marked with IS 14846, both flanged ends and drilled, with forged brass spindle, CI gate with brass ring, non rising type, cast iron wheel handle, cast iron cap, complete with 3mm thick neoprene rubber gasket joint and nuts, bolts (high tensile), washers etc, and testing, complete, all as specified & directed.

Supply & fixing in replacement non return valve heavy duty class ‘PN-1.6’ of 100 mm bore, ISI marked both flanged ends and drilled, with forged brass spindle, CI gate with brass ring, non rising type, cast iron wheel handle, cast iron cap, complete with 3 mm thick neoprene rubber gasket joint and nuts, bolts (high tensile), washers etc, and testing, complete, all as specified & directed.

Supply, laying, and testing galvanised iron pipes of 100 mm bore medium grade with ISI Marked with all necessary fittings ( such as bends, elbows, tees, short pieces of medium grade pipe, connectors, back-nuts, caps, plugs and unions etc.) laying in trenches/ floors/ ducts and also cutting pipes, screwing, and for making forged bends on piping as required, complete all as specified and as directed by Engr-in-Charge.

Supply, Laying, jointing and testing galvanized iron tubes 80 mm bore medium grade with all fittings confirming to IS-1239, laid in trenches or alongwall or roofs and in floors etc complete all as specified .

M&L for Connecting pieces one end flanged and other socket or spigot and bell mouth pieces one end flanged other end tapering as bell mouth collars, caps and plugs (joints, excavation and earth work shall be measured and paid separately) complete all as specified and directed.

Supply, installation, commissioning and testing in replacement of feeder pillar box type, factory made, CPRI approved ,LT(415 Volts, 50 Hz , 3-phase, 4 wire supply) duly mounted on iron leg of size 50x50x6mm, Indoor type,double door,weather and vermin proof (Protection Class IP-54), with ventilation louvers and 2 mm thick MS CRCA sheet and angle iron frame work with both side hinged opening for external, rubber lining, locking arrangement, Powder Coated externally and internally over a coat of red oxide primer complete including grouting of frame with PCC mortor for installation of panel of following : - (At FP 10) (a) Bus Bar chamber comprising 4 Nos Aluminium strip bus bars air insulated and PVC sheathed, capacity not lesss than 150 amp with colour coding in separate sheet steel enclosure. (b) MCCB 415 Volts, 100 Amp rating 4 Pole,thermal adjustable type, Service Breaking Capacity 25 kA -1No (c) MCCB 415 Volts, 63 Amp rating 4 Pole,thermal adjustable type, Service Breaking Capacity 16 kA -01 No (i) LED type/Neon type Indicating lamps panel mounting type RYB-3 Nos (k) Fine wiring with single core copper conductor cable for instruments/indicating lamps-1 Job. Note :- MCCBs should be connected with spreader terminals of suitable size.

Earthing complete with galvanised mild steel earth plate electrode 600X600X6 mm thick buried directly inground vertically (earth pit not less than 2.25 m deep below normal ground level) with the top edge of the earth plate electrode at a depth not less than 1.5m below normal ground level and including GI earth strip 32 x 6 mm bolted (with GI nuts, bolts & check nuts) and riveted to earth plate electrode at one end and nected to metallic bodies of HT/LT equipments etc at the other end, earth strip encased in and including 50 mm bore GI medium grade pipe with all fittings from top of earth plate electrode to body of equipment fixed with and including 25x 6mm flat iron clamps, bolts, nuts and washers and including providing watering pipe 20mm bore GI pipe medium grade from Bottom of concrete pit to top of earth plate electrode complete all as specified and shown in electrical plate No 3 of MES SSR Part-I. The scope of work includes necessary excavation and earth work in any type ofsoil, removal of soil upto 50 metre, PCC pit with precast RCC cover, charcoal/salt, funnel, CI frame etc complete. NOTES :- (i)The concrete pit shall be made in PCC 1:3:6 type C-1, using 12.5mm graded crushed stone aggregate 40mm thick precast cover slab of RCC (1:2:4), type B-1, using 20mm graded crushed stone aggregate with suitable MS handle in lieu of CI cover shown in electrical plate No 3 of MES SSR Part-I shall be provided. Reinforcement in RCC cover shall be of 8mm dia TMT bars laid @150mm c/c both ways (ii) Item includes the cost of 7.5 metre GI pipe for protection of earth strip. Any variation in length shall be measured and paid through deviation order. (iii) Item includes cost of 7.5 metre earth strips. Any variation in length shall be adjusted through deviation order. (iv) Earth plate electrode shall be surrounded by adequate quantity of charcoal dust and salt to a packed thickness of 15 cm on all sides.

Exavation in trenches not exceeding 1.5 mtr depth and not exceeding 1.5 mtr wide and getting out soft/loose soil for foundation and getting out for laying of pipes/cable complete all as specified and directedby Engr-in-charge.

Returning filling in including spreading, levelling, watering and well ramming in layers not exceeding 25cm thick each layer, after laying of pipe / cable in complete all as specified and directed by Engr-in-charge.

Removing excavated materials not exc 50 mtr and depositing where directed at a level not execeeding 1.5 mtr above the starting point. complete all as specified and directed by Engr-in-charge.

Material and labour for sand cushioning to under ground Cable ( 15 cm thick before laing and 8 cm thick after laying the cable ) complete all as specified and directed. Note :- Punned down thickness shall be considered for messurement 18 cm complete all as specified and directed by Engr-in- charge.

Supply and laying Bricks comman burnt clay building bricks Old size with sub class B Designation 75. complete all as specified & directed.

Supply, laying and testing cable XLPE Insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 16 sq mm 4 core complete all as specified and directed.

Material and labour for GI Pipe 40 mm bore, light grade, ISI marked confirming to IS1239,with fittings laid in floor / fixed along with poles/walls /Roadcrossing/floor crossing for cable protection ,all as ordered complete all as specified and directed.

M&L construction of brick masonry valve pit of size 1200mm x 1200mmx1200 MM (internal dimensions of chamber) depth to be reckoned from the top of PCC in foundation to top of MS cover with MS sheet cover 3mm thick including frame of angle iron 40 X 40 X 6 mm with locking arrangement and lifting handle including painting two coats of black synthetic enamel paint over a coat of red oxide primer etc including brick work in one brick thick wall in cement mortar 1:4, 15mm thick plastering in cement mortar 1:4 (internally on all brick wall and external upto 15cm below ground level) and necessary excavation and earth work in any type of soil, returning, filling in, disposal of surplus spoil to a distance not exceeding 50 mtr 15 cm thick PCC 1:4:8 type D-2 in PCC foundation projected by 15cm all round from the outer face of brick wall PCC 1:2:4 type B-1 in coping complete all as specified

M/s PRABIR ENTERPRISE

STANDARD ELECTRIC WINDERS

NChetia and Sons Trading

FREEZCON

M/S K S Enterprise

M/S S. P. ENTERPRISE

M/s HALDER ENTERPRISE

D.D Construction