REPAIR/ MAINT OF VALVE PITS AND REPAIR MAINT TO CLEANING OF UG SUMPS/ OHTS, PERIODICAL DISINFECTION AND MAINT OF IPR PLANTS INSIDE AND OUTSIDE MOAT AREA UNDER GE (VD) KOLKATA

Amount

M&L for Cleaning of 3 lakh gallons capacity overhead reservoir (consisting of one inner tank of 4.02 Mtr dia and one outer tank of 9.75 Mtr dia of depth 9.63 Mtr) at a height of 35 Mtr from the ground (Approx), and through 6 stages of cleaning and sterilization consisiting of of the following stages complete all as specified and directed by the Engr-in-Charge. Location: POWER HOUSE OHT Make:- RAYS CLEANTECH/ INUS WATERTECH/ MS TANK CLEANING

(a). First Stage :- Machanized Dewatering, This first stage consists of emptying water from the tank. A submrsible pump is used to drain the tank of excess of water. Removal of water and semi sludge with the help of sludge pump (electric/hydraulic (b). Second stage :- Sludge Removal, A sophisticated suction process is used to drain the excess sludge out of tank at a safe place away from tank. Removal of mud, sand and solid particles up to 4 inch size with the hydraulic sludge pump. (c). Third strage :- High Pressure Cleaning, The tank is then cleaned using high pressure jet machine. The rotary jet is used to clean walls and ceilings, whereas plain jet is used to clean the corners of the tank. The rotary jet acts as scrubber and can clean the most stubborn depositions. Cleaning of floor, walls and ceiling with the help of German made high pressure rotary jet pump having pressure range between 80-180 bars (d). Fourth stage :- Vacuum Cleaning, The additional sludge and impurities are then removed by using a industrial vacuum cleaner and are again disposed at a safer place away from the water tank. An industrial vacuum pump is then used to clean the leftover physical impurity from the floor.

(e). Fifth stage :- Antibacterial Spray, after above steps of cleaning, the tank is treated with an antibacterial spray (sodium hypochlorite) on the surface of the wall of the tank to make it completely bacteria free and safe for use. Our use of chemical is just to disinfect the germs and bacteria on the walls and ceiling only. (f) . Sixth stage :- UV Radiation, the water storage tank is then treated with ultra-violet (UV) radiator to make it bacteria free and safe for storing your drinking water. A specially developed UV radiator is used to kill suspended or floting bacteria remaining in the tank. Note :- All T&P, PPE Kit, Transport sall be provided by the contractor without charging any extra cost. All the cleaning & sterilization staffs should be under accidental insurance coverage. Date of cleaning of tank should be written on the outer surface of tank in white letter over black background complete as directed.

All as per item No 01 here in before but of size 2 Lakh gallon gallon capacity overhead reservoirs at a height of 20 Mtr from the ground complete all as directed by the Engr-in-Charge. Location : P-13 P/H,

All as per item No 01 here in before but of size 1 Lakh gallon gallon capacity overhead reservoirs at a height of 20 Mtr from the ground complete all as directed by the Engr-in-Charge. Location : Gorabazar

All as per item No 01 here in before but of size 20000 gallon capacity overhead reservoirs at a height of 15 Mtr from the ground complete all as directed by the Engr-in-Charge. Location : AOI P/H,

All as per item No 01 here in before but of size 30000 gallon capacity overhead reservoirs at a height of 15 Mtr from the ground complete all as directed by the Engr-in-Charge. Location : Water gate Balancing tank

All as per item No 01 here in before but of size 10000 gallon capacity overhead reservoirs at a height of 7.5 Mtr from the ground complete all as directed by the Engr-in-Charge. Location: P/H NO-01 & Ladies Golf

All as per item No 01 here in before but of size 5000 gallon capacity overhead reservoirs at a height of 7.5 Mtr from the ground complete all as directed by the Engr-in-Charge. Location: Map A,B,C & P-186, P-187

All as per item No 01 here in before but for UG sump reservoir capacity of 1 lakh gallons capacity , complete all as specified & directed by the Engr-in-Charge. Location: Water gate, Queens BK P/H, P/H NO-03, Taramandal P/H, JSA PH , OR's MAP P/H

All as per item No 01 here in before but for UG sump reservoir capacity of 2 lakh gallons capacity , complete all as specified & directed by the Engr-in-Charge. Location: JCOs Map Pump House

All as per item No 01 here in before but for UG sump reservoir capacity of 30000 Gallons capacity , complete all as specified & directed by the Engr-in-Charge. Location: Dalhousie BK Pump house, AOI Pump House & Sweet Water Pump House,

All as per item No 01 here in before but for UG sump reservoir capacity of 20000 Gallons capacity, complete all as specified & directed by the Engr-in-Charge. Location: OD-II P/H, SO-II P/H, Comnd Mess P/H, P1 Bld P/H.

All as per item No 01 here in before but for UG sump reservoir capacity of 10000 Gallons capacity.complete all as specified & directed by the Engr-in-Charge. Location: Horse riding P/H, New Golf P/H, O2 mess P/H, KP Qtr P/H

All as per item No 01 here in before but for UG sump reservoir capacity of 5000 Gallons capacity.complete all as specified & directed by the Engr-in-Charge. Location: Gannery P/H, AOI P/H

All as per item No 01 here in before but for Service tank capacity of 5000 Ltrs capacity.complete all as specified & directed by the Engr-in-Charge.

All as per item No 01here in before but for Service tank capacity of 2000 Ltrs capacity.complete all as specified & directed by the Engr-in-Charge.

All as per item No 01 here in before but for Service tank capacity of 1500 Ltrs capacity.complete all as specified & directed by the Engr-in-Charge.

All as per item No 01 here in before but for Service tank capacity of 1000 Ltrs capacity.complete all as specified & directed by the Engr-in-Charge.

All as per item No 01 here in before but for Service tank capacity of 500/750 Ltrs capacity.complete all as specified & directed by the Engr-in-Charge.

Supply only , High strength calcium based granular chlorination chemical (Calcium Hypochlorite in 45 Kg Drum) having chlorine (cl) percentage by volume 65% to 70% (disinfectant for water treatment). Make: Purichlor /Aqua fit or any make and brand as approved.

M&L cross arms, bracing, supports, clamps and back plate fabricated from structural steel section including nut, bolts, washers, welding, bending, cold or hot, drilling holes for bolts in any shape or size as indicated or directed and inclusive of one primer coat, one under coat and one finishing coat of aluminium/Black paint complete all as specified and as directed .

Excavation in trenches not exceeding 1.50m wide and not exceeding 1.50m depth for foundation, for laying of pipes/cables/poles etc., forming bottom surfaces to required slope/gradient where pipe are laid and getting out in any type of soil complete all as specified and directed.

Returning, filling in, including spreading, leveling, watering and well ramming in layers not exceeding 25cm thick each layer as in soil complete all as specified and as directed.

Removing excavated material/soil 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 and as directed.

Taking up / down 100 mm bore, GI water tubing and connection from trenches/ walls / floors (of any location) for replacement / re-use in old / new location as directed by the Engr-in-Charge. (Note: Necessary earthwork, if any , will be measured and paid separately under relevant items)

All as per Item No. 24 above but of size 80 mm bore

All as per Item No. 24 above but of size 50 mm bore

All as per Item No. 24 above but of size 40 mm bore

All as per Item No. 24 above but of size 25 mm bore

All as per Item No. 24 above but of size 20 mm bore

All as per Item No. 24 above but of size 15 mm bore

S&F, 15 mm bore steel water tubing, medium grade, ISI marked, galvanized, including all fittings such as bends, tees, elbows, reducers, unions, plugs, sockets etc., laid in trenches or fixed to walls and ceilings or concealed in walls, ducts/ceilings or laid in floors complete all as specified and directed.

All as per item No 31 above but 20mm bore of pipe.

All as per item No 31 above but 25mm bore of pipe.

All as per item No 31 above but 40mm bore of pipe.

All as per item No 31 above but 50mm bore of pipe.

All as per item No 31 above but 80mm bore of pipe.

All as per item No 31 above but 100mm bore of pipe.

Relaying/Refixing 50mm bore GI tubing and connections in new or old position after thoroughly cleaning, with new fittings, laid in trenches complete all as specified and as directed by Engr-in-Charge.

All as per Item No. 38 above but of size 40 mm bore

All as per Item No. 38 above but of size 25 mm bore

All as per Item No. 38 above but of size 20 mm bore

All as per Item No. 38 above but of size 15 mm bore

Relaying/Refixing 50 mm bore GI tubing and connections in new or old position after thoroughly cleaning, with new fittings, Clamps fixed to walls and ceilings or laid in floors complete all as specified and directed by Engr-in-Charge.

All as per Item No. 43 above but of size 40 mm bore

All as per Item No. 43 above but of size 25 mm bore

All as per Item No. 43 above but of size 20 mm bore

All as per Item No. 43 above but of size 15 mm bore

M&L, DI fittings for pipes upto 200mm bore such as bends (any type, radius and angle) tapers any type, (straight, bend, increasing, decreasing or double socket etc.) Tee pieces single branch. 'Y' junction, double socket flange branch, cross, open flange(all sockets or socket and spigot) collars, caps and plugs complete all as specified and as directed.

M&L, Cast iron fittings, Bends (any type, radius andangle) tapers any type,(straight, bend, increasing,decreasing or double socket ,collar, etc.)Tee pieces single branch. "Y"junction, double branch, cross(all sockets or socket and spigot)collars, caps and plugs complete all as specified and as directed.

Material and labour for run lead joint (using old retrieved lead) for 80 mm bore cast iron water mains complete all as specified and as directed by the Engineer-in-Charge. (Note: New lead required for jointing of pipes shall be measured and paid seperately)

All as per Item No. 50 above but of size 100 mm bore

All as per Item No. 50 above but of size 150 mm bore

All as per Item No. 50 above but of size 200 mm bore

Supply only lead conforming to IS782 , complete as all specified and as directed.

Taking out suction pipe of 200mm bore with defective CI foot valve/stainer of 200 mm dia and replace foot valve (ISI marked) including necessary nut, bolt, washers and cutting threading of CI/DI/GI pipe if required and lowering in the sump complete all as directed by the Engr-in-Charge.

All as per Item No. 55 above but of size 150 mm bore

All as per Item No. 55 above but of size 100 mm bore

Supply, install, test and commissioning of 80mm bore CI Sluice Valve in repairs, Class PN-1.6, both ends flanged and drilled type with brass spindle including wheel, suitable rubber gasket for flanged joints, ISI marked, including provision of necessary jointing materials nuts and bolts, washers etc., complete all as specified and directed.

All as per item No 58 above but 100mm bore Sluice Valve.

All as per item No 58 above but 150mm bore Sluice Valve.

All as per item No 58 above but 200mm bore Sluice Valve.

S&F in repairs, 80mm bore, PN-1.0 Non Return valve in CI body with bypass arrangement, ISI marked including bolts, nuts & washers and packing material complete all as specified and as directed.

All as per item No 62 above but 100mm bore Non Return Valve.

All as per item No 62 above but 150mm bore Non Return Valve.

All as per item No 62 above but 200mm bore Non Return Valve.

S&F in repairs, 20mm dia Gun metal, globe or gate valves with iron wheel head, ISI marked screwed both ends for iron/GI pipe and fixed complete all as specified and as directed.

All as per item No 66 above but 25mm dia globe or gate valve.

All as per item No 66 above but 32 mm dia globe or gate valve.

All as per item No 66 above but 40mm dia globe or gate valve.

All as per item No 66 above but 50mm dia globe or gate valve.

All as per item No 66 above but 63 mm dia globe or gate valve.

All as per item No 66 above but 90 mm dia globe or gate valve.

Construction of valve chamber of size 0.9m x0.9m x0.80 m internal size suitable for housing sluice valve / gate valve etc with PCC 1:4:8 type D2 for foundation 15mm thick with an offset of 5 cm on all sides, brick work in CM 1:4 230mm thick rendering in CM 1:4, 15mm thick, 5 cm thick & 230mm wide PCC 1:2:4 type B1 coping over brick work all around including provision of MS angle iron frame 40 x 40 x 6 mm embedded in concrete with suitable hinges 5 mm thick MS sheet cover and locking arrangements including two coats of synthetic enamel paint over a coat of red oxide metal primer on exposed steel surfaces including demolition of existing damaged valve chamber and necessary excavation & earth work etc all as specified and directed.

Cutting of road/hard standing not exc 30cm in width and not exc 60cm in depth for removal/laying of water tubing including returning filling and making good the disturbed surfaces using PCC 1:2:4 type B1 using 20mm graded stone aggregate on top 100mm layer and fair fininshing the surface without using any extra cement all as specified and directed.

Taking down UP/down Unserviceable / rust valve pit cover and frame / support or platform etc of any size/thickness and supply, fabrication and fixing of framed bracket, made of mild steel plate/flat/angle iron (of required size ), cut to shape and size,as in valve pit cover /frame/support or platform including two coats of black bituminous paint over a coat of red oxide zinc chome primer complete all as directed .

Supply, laying and testing of 110 mm outer dia, 3- layer PP-R Polypropylene random copolymer) pipes SDR 11 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 complete all as specified and directed by Engr-in-Charge.

All as per Item No 76 above but of 90 mm outer dia

All as per Item No 76 above but of 63 mm outer dia

All as per Item No 76 above but of 50 mm outer dia

All as per Item No 76 above but of 40 mm outer dia

All as per Item No 76 above but of 32 mm outer dia

All as per Item No 76 above but of 25 mm outer dia

S&F 20 mm bore Ball brass valves, high pressure, with HDPE float and flynut complete, screwed for iron pipe or brass ferrule and fixed complete all as specified and directed.

All as per above itemNo 83 here-in-before but 25 mm bore Ball brass valves.

All as per above item No 83 here-in-before but 40 mm bore Ball brass valves.

Demolition of Brick Work built in Cement Mortar including all Quoins, Arches, Pillars, etc. of any descriptions, complete all as specified and directed.

Demolition of Cement Concrete (un-reinforced) in Ground Floors and Pavings not exc. 150mm thickness (above or below Ground Level), complete all as specified and directed.

M&L Brick Work with Flyash Bricks (with Old Size Bricks), Straight or Curved on Plan exc. 6.0 Metre mean Radius, built in Cement Mortar 1:6, complete all as specified and as directed.

M&L Plain Cement Concrete type C2 (1:3:6) using 40 mm graded aggregate) in Foundation, Filling and Mass Concrete, complete all as specified and as directed.

M & L rendering 10 mm thick on brick or concrete surface in cement mortar (1:6), finished even and smooth without using extra cement complete all as specified and directed.

Materials and Labour for valve pit cover suitable for brick masonry valve pit of size 1000 mm X 1000 mm X 1000 mm (internal dimensions) made out of 3 mm thick MS plate welded with 40 x 5 mm thick FI frame all round including provision of hinges, handles, locking arrangement, ISA 40 x 40x 5 mm frame, fixed on top of existing valve pit by means of hold fast 150 mm long, embedded in PCC 1:2:4 type B1 (Block size 230 X 200 X 100 mm) including applying two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer and including taking down existing unserviceable valve pit cover, complete all as specified and directed.

All as per item No 92 here-in-before but 600 x 600 x 600 size

Supply, fixing in repair and testing of 20 mm outer dia, 3- layer PP-R Polypropylene random copolymer) pipes SDR 7.4/PN 16 UV stablised and antimicrobial fusion welded having thermal stability for hot & cold water supply all PP-R plain & brass threaded polypropylene random including all fittings such as bends, tees, elbows, reducers, unions, plugs, sockets etc laid in trenches/floors or fixed on walls/roof complete all as specified and directed by Engr-in-Charge.

All as per Item No. 95 above but of size 25 mm outer dia

All as per Item No. 95 above but of size 32 mm outer dia

All as per Item No. 95 above but of size 50 mm outer dia

All as per Item No. 95 above but of size 63 mm outer dia

All as per Item No. 95 above but of size 90 mm outer dia

All as per Item No. 95 above but of size 110 mm outer dia

Supply and fixing PPR Gate valve with brass insert and brass working parts suitable for 20 mm OD PPR pipe complete all as specified and directed.

All as per Item No. 102 but for 25 mm OD pipe

All as per Item No. 102 but for 32 mm OD pipe

All as per Item No. 102 but for 50 mm OD pipe

All as per Item No. 102 but for 63 mm OD pipe

All as per Item No. 102 but for 90 mm OD pipe

S&F in repairs, 40mm dia Butterfly valve in DI body with stainless steel disc & stem, nitrile/EPDM liner, lever operated, ISI marked including bolts, nuts and wshers complete all as specified and as directed.

All as per item No 108 above but 50mm bore Butterfly Valve.

All as per item No 108 above but 80mm bore Butterfly Valve.

All as per item No 108 above but 100mm bore Butterfly Valve.

All as per item No 108 above but 200mm bore Butterfly Valve.

Supply and fixing in repair 80 mm bore CI butterfly valve, conforming to BS-5155, lever operated with necessary rubber gaskets, nuts and bolts and washers of suitable size as directed by the Engineer-in-Charge.

All as per Item No. 113 above but of size 100 mm bore

All as per Item No.113 above but of size 200 mm bore

Construction of valve chamber of size750x750x750 mm internal size suitable for housing sluice valve / gate valve etc with PCC 1:4:8 type D2 for foundation 15mm thick with an offset of 5 cm on all sides, brick work in CM 1:4 230mm thick rendering in CM 1:4, 15mm thick, 5 cm thick & 230mm wide PCC 1:2:4 type B1 coping over brick work all around including provision of MS angle iron frame 25 x 25 x 3mm embedded in concrete with suitable hinges 3mm thick MS sheet cover and locking arrangements including two coats of synthetic enamel paint over a coat of red oxide metal primer on exposed steel surfaces including demolition of existing damaged valve chamber and necessary excavation & earth work etc all as specified and directed.

Supply only,Poly Aluminum Chloride (PAC) suitable for drinking water, high basicity in granular/ powder form inorganic soluble polymer confirming to IS 15573 in required pack. Make : Vikram PAC or Equiv

S&F in repairs, Gun Metal Check Valve of size 50mm ISI marked including bolts, nuts & washers and packing meterial complete all as specified and directed.

Note: Schedule of credit (SCHEDULE OF CREDIT) amount of Rs ________ mentioned on Page No ____ shall be deducted from the total quoted amount of BOQ.

RAJ ENTERPRISE (BID ID -3521697)

M. M. C. AND CO (BID ID -3520974)

GHOSH ENTERPRISE (BID ID -3521549)

SUDHA ENTERPRISES (BID ID -3520838)

MS HORIZEN (BID ID -3521523)

S.K. TRADERS (BID ID -3521768)

MS AP CONSTRUTION AND CO (BID ID -3521478)