REPAIR/MAINT TO EXTERNAL WATER SUPPLY DISTRIBUTION SYSTEM WITH CONNECTED SERVICES AND REPAIR/MAINT TO WATER SUPPLY INSTALLATIONS PUMPS/MOTORS WITH ALLIED SERVICES AND CLEANING OF OH TANKS/UG SUMPS AT OTHER THAN BASISTHA AREA UNDER GE GUWAHATI

Amount

Excavating in trenches, n exc 1.5 m wide and n exc 1.5 m in depth; for laying of GI pipe and getting out in any type of soil complete all as specified and directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc 25 cm.complete all as specified and directed.

Removing excavated material n exc. 50m and depositing where directed at a level n exc. 1.5 m above the starting pointcomplete all as specified and directed.

Making connection of PP-R distribution branch with PP-R main of sizes 16 to 40mm dia by providing and fixing tee including cutting and making fusion joint etc complete all as specified and directed.

Making connection of PP-R distribution branch with PP-R main of sizes 50 to 90mm dia by providing and fixing tee including cutting and making fusion joint etc complete all as specified and directed.

S&F PP-R Ball valves (brass insert), high pressure, with polythene float and flynut complete, screwed for iron /PP-R pipe of 32mm dia or brass ferrule and fixed all complete all as specified and as directed.

S&F PP-R Ball valves (brass insert), high pressure, with polythene float and flynut complete, screwed for iron /PP-R pipe of 25mm dia or brass ferrule and fixed all complete all as specified and as directed.

Supply and fixing, in repair, 3- layer PP-R (Polypropylene random copolymer) pipes 110 mm outer dia, SDR 7.4 (PN-16) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply including fittings PP-R plain & brass threaded type polypropylene random, jointing complete including laid in trenches/floor at places where directed complete all as specified and directed.

Supply and fixing, in repair, 3- layer PP-R (Polypropylene random copolymer) pipes 90 mm outer dia, SDR 7.4 (PN-16) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply including fittings PP-R plain & brass threaded type polypropylene random, jointing complete including laid in trenches/floor at places where directed complete all as specified and directed.

Supply and fixing, in repair, 3- layer PP-R (Polypropylene random copolymer) pipes 63 mm outer dia, SDR 7.4 (PN-16) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply including fittings PP-R plain & brass threaded type polypropylene random, jointing complete including laid in trenches/floor at places where directed complete all as specified and directed.

Supply and fixing, in repair, 3- layer PP-R (Polypropylene random copolymer) pipes 50 mm outer dia, SDR 7.4 (PN-16) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply including fittings PP-R plain & brass threaded type polypropylene random, jointing complete including laid in trenches/floor at places where directed complete all as specified and directed.

Supply and fixing, in repair, 3- layer PP-R (Polypropylene random copolymer) pipes 32 mm outer dia, SDR 7.4 (PN-16) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply including fittings PP-R plain & brass threaded type polypropylene random, jointing complete including laid in trenches/floor at places where directed complete all as specified and directed.

Supply and fixing in replacement PP-R Gate valves (brass insert) complete for outder dia of pipe 63 mm complete all as specified and directed.

Supply and fixing in replacement PP-R Gate valves (brass insert) complete for outder dia of pipe 50 mm complete all as specified and directed.

Supply and fixing in replacement PP-R Gate valves (brass insert) complete for outder dia of pipe 32 mm complete all as specified and directed.

Supply and fixing in replacement Gun-metal, globe or gate valves, with iron wheel head, screwed both ends for iron pipe and fixed 50 mm complete all as specified and directed.

Supply and fixing in replacement Gun-metal, globe or gate valves, with iron wheel head, screwed both ends for iron pipe and fixed 25 mm complete all as specified and directed.

Supply and fixing in repair 100 mm bore cast iron flanged & drilled both ends sluice valve, (ISI marked) long body type, conforming to IS 14846-2000; Class PN-1.6 with iron wheel head & brass spindle including all jointing materials and mild steel nuts, bolts, washers, rubber / fibre board gaskets etc and testing complete all as specified and directed.

Supply and fixing in repair 80 mm bore cast iron flanged & drilled both ends sluice valve, (ISI marked) long body type, conforming to IS 14846-2000; Class PN-1.6 with iron wheel head & brass spindle including all jointing materials and mild steel nuts, bolts, washers, rubber / fibre board gaskets etc and testing complete all as specified and directed.

Supply and fixing in repair 150 mm bore cast iron flanged & drilled both ends sluice valve, (ISI marked) long body type, conforming to IS 14846-2000; Class PN-1.6 with iron wheel head & brass spindle including all jointing materials and mild steel nuts, bolts, washers, rubber / fibre board gaskets etc and testing complete all as specified and directed..

M&L for 100 mm bore galvanized iron tubing, heavy duty in Trenches/ Floor/Pillar and connection in old or news position including all fitting which required like socket /Union/Tee/ Reducer Nipple etc as required including taking down old pipe complete all as specified and as directed.

M&L for 80 mm bore galvanized iron tubing, heavy duty in Trenches/ Floor/Pillar and connection in old or news position including all fitting which required like socket /Union/Tee/ Reducer Nipple etc as required including taking down old pipe complete all as specified and as directed.

M&L for 50 mm bore galvanized iron tubing, heavy duty in Trenches/ Floor/Pillar and connection in old or news position including all fitting which required like socket /Union/Tee/ Reducer Nipple etc as required including taking down old pipe complete all as specified and as directed.

M&L for 25 mm bore galvanized iron tubing, heavy duty in Trenches/ Floor/Pillar and connection in old or news position including all fitting which required like socket /Union/Tee/ Reducer Nipple etc as required including taking down old pipe complete all as specified and as directed.

M&L for Boring/drilling (horizontally) hole manually under existing road, pavement, hard standing (maximum 10mtr in width) suitable for passing GI tubing of 40 to 150mm bore dia complete all as specified and as directed.

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

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 8000 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 filling 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 all as specified and as directed.

Supply and fixing gravels of size 20x6mm filled complete as specified and as directed for 5000/8000 GPH capacity filter complete all 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 all 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 filter complete all 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 all 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 as in repair gasket 300mm size complete all as specified and directed.

Supply and fixing, in repair, 6 Sqmm, 3 core, 1100 volts grade, flat cables with copper conductor pvc insulated for submersible pump motors complete all as specified and as directed.

Cleaning (inside tank only) of PS Over Head Tank of capacity 9600 Gallons, 15 mtr staging height, using following stages cleaning process including arrangement of necessary T&P, labour and Chemicals etc before starting process of cleaning complete all as specified and as directed:- STAGE-I (a) Mechanized Dewatering- Mechanized dewatering shall be done by submersible dewatering pump having suitable outlet and discharge and control panel. The details of motor cable, seal, material of construction and control panel should br furnished STAGE-II (b) Sludge Removal-Desilting and removal of left over 4 inches dirty water sludge with sludge removal pump STAGE-III (c) High Pressure Cleaning- Cleaning of wall, ceiling and floor by high pressure of 80-180 bars. Cleaning shall be done by high pressure cleaning machine having F-Class insulation protection. The heavy duty machine should be operated HPC opertaor on continuous duty in variablef fully adjustable mode from working pressure of 100-180 bars. Item continued/---

The machine should have imported twin steel care protection rubber high pressure hose to safety. With stand opertaing pressure of 250 bar and two cleaning lances, one with rotary jet and second one a flat jet for effective drinking water tank operation. STAGE-IV Mechanized scavenging : Mechanical scavenging using Eco-friendly, health & Safety disinfecting chemical for removing rest over algae in water storage tank's wells to ensure minimum harmful pathogens STAGE-V Vaccum cleaning : Removal of remaining sludge from the floor with help of industrial vaccum cleaner (A) Removal of remaining sludge with help of imported heavy duty industrial vaccum cleaner and sludge sucker having power of 1200watt with suitable heavy duty motor. (B) Imported sludge sucker shall be a part of high pressure system which sucks sludge and through the same out of the tank, machine must handle solid particle as well. Item continued/---

STAGE-VI Antibacterial Disinfection Spray : Anti-Bacterial FDA recommended disinfection is fully Bio-Degradable Eco-Friendly and safe in nature and can be used as an anti-bacterial agents to disinfect the inside the walls of water storage tank. STAGE-VII UV Radiator- Treatment of inside tank by exposing germicide UV Radiator to kill further suspended or floating bacteria if any. Treatment of inside tank be done by exposing UV radiator by imported heavy duty UV radiator. The radiator shall be designed with 4 UV lamp in way to ensure 360 degrees of sterilization and should have lamps for effective sterilization for a period of 8000 working hours, the radiator must be totally portable and effective for final sterilization of drinking water tanks for elimination of floating and suspended bacteria. Item continued/---

Note:- (i) The entire work shall be carried out by well experienced personnel/firms having experience of similar nature of work. (ii) Entire T&P and all Safety 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.

All as per item No.40.00 & 40.01 to 40.03 mentioned here-in-above but tank capacity 31500 Gallon and height 18m

Taking out monoblock type pump (Make-Kirlosker) of 15 HP capicity from its foundation duly disconnecting suction and delivery lines, transporting to authorised civil workshop, dismantalling, opening and sort out defective spares and parts and cleaning, servicing, greasing and replacememt of defective spares including painting of pump with two coats of synthetic enamel paint as per existing colour after and including prepration of old painted surface of pump set and transporting back the to site after repair, refixing, mounting the base to its original foundation, testing and commissioning complete all as specified and as directed. Note:- New spares as required shall be measured and paid separately under items as 'Supply only' here in after.

Supply and fixing casing bearing suitable for centrifugal type monoblock pump of capacity 15HP.

Supply and fixing Impeller suitable for centrifugal type monoblock pump of capacity 15HP.

Supply and fixing Bushing suitable for centrifugal type monoblock pump of capacity 15HP.

Taking out the existing submersible pump set (Make-calama/KSB) of capacity 7.5/10 HP duly disconnecing all electrical and mechanical connections complete with column pipe with the help of chain pully block & tripod etc from the max depth of 360 feet, transporting the same to civil authorised workshop and bring back to site after repair and replacement of defective spares for pump, rewinding the motor with super enamelled copper winding wires of suitable gauge and size as per existing, varnishing the re-winded motor and heating up the same in heat chamber to obtain the insulation resistance not less than 0.6 Ohms, make the same in serviceable condition, reassembling the motor and testing on ground including re-installation and relowering the pump set after completion of repair/replacement work complete as directed. Note : New spares as required shall be measured and paid separately as ‘Supply only’ as under:-

Supply and fixing Bushing suitable for 10 HP pump set complete all as specified and as directed.

Supply and fixing coupling for 10 HP pump set complete all as specified and as directed.

Material and labour for impellar complete all as specified and as directed.

Chemical and bacteriological testing of water sample collected from Various pump houses of other than basistha area (Borjhar, IWT main, IWT Training, Sadilapur Transit Camp, MC Group, Md Accn Shantipur and Transit camp), The water sample should be collected as a raw water sample and treated water sample. Raw water sample should be collected at the inlet point of IR plant and treated water sample should be collected at the delivery point of IR plant or user end. The water sample have to be sent in Govt Approved laboratary and following parameter should be tested- Iron, odour, PH value, total hardness, cholride, residual free chlorine, fluride, total dissolved solids, total calcium, megnesium, sulphate, total alkanity complete all as specified and as directed. Note- (i) Water sample collected from all seven locations and testing of all this seven sample is trea as single Job (ii) Test report of water samples shall be submitted alongwith RAR/Final Bill.

Supply and fixing in repair 100 mm bore cast iron flanged & drilled both ends non Return Valve (reflux valve), (ISI marked) long body type, conforming to IS 14846-2000; Class PN-1.6 with iron wheel head & brass spindle including all jointing materials and mild steel nuts, bolts, washers, rubber / fibre board gaskets etc and testing complete all as specified & as directed.

Supply and fixing in repair 80 mm bore cast iron flanged & drilled both ends non Return Valve (reflux valve), (ISI marked) long body type, conforming to IS 14846-2000; Class PN-1.6 with iron wheel head & brass spindle including all jointing materials and mild steel nuts, bolts, washers, rubber / fibre board gaskets etc and testing complete all as specified & as directed.

Supply and fixing integral LED avaiation obstruction light comprising of aluminium housing with polycarbonate enclosure having 10W bulb complete including standard fixing arrangment complete all as specified and as directed.

Supply, fixing and testing PVC insulated and PVC sheathed cable galvanized strip or wire armoured, electric cable (heavy duty) with starnded copper conductor of size 2.5Sqmm x 3 core, 1100 volts fixed to wall/roof etc with suitable specres bolts, nuts etc of required grade complete all as specified and as directed.

S&F in replacement fully Automatic Star-delta starter for submesible pump set of rating upto 10HP, 415 volts, 50Hz having with steel metal enclosure and relay range 3 phase, 21 to 42Amps rating alongwith single phase preventor panel mounting complete all as specified and directed.

S&F in replacement fully Automatic Star-delta starter for submesible pump set of rating upto 20HP, 415 volts, 50Hz having with steel metal enclosure and relay range 3 phase, 21 to 42Amps rating alongwith single phase preventor panel mounting complete all as specified and directed.

M/S K NATH AND CO. (BID ID -3393399)

V.V.Construction (BID ID -3397417)

LAXMI & GANESH ENTERPRISE (BID ID -3396455)

SHANKAR ENTERPRISE (BID ID -3396439)

M/S SEWAK SINGH (BID ID -3396948)

S. R. TRADING (BID ID -3396581)