REPAIR AND MAINTENANCE OF IRON REMOVAL PLANTS, WATER SUPPLY PUMPS AND MOTORS ALONGWITH CONNECTED ITEMS AND REPLACEMENT OF CI/DI/GI WATER SUPPLY PIPE LINE AND OTHER MISC WORKS AT KANCHRAPARA UNDER GE BARRACKPORE

Amount

Excavation in trenches not exceeding 1.5 mtr wide and not exceeding 1.5 mtr depth for laying of cables, pipe lines, protection pipes and foundations etc and getting out in soft loose soil complete all as specified and directed.

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

Removing surplus excavated materials to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting points as in soft/loose soil all as specified and directed.

M&L cutting existing steel tubing for alterations or additions (each cut measured) of any size of pipe without taking down bore pipe line all as specified.

M&L for lead wool joint with all jointing materials such as lead, rope manila etc as required of site for repairing to leakage after removing of old lead from CI/DI pipe etc complete with tool & plant of following size of CI/DI pipe complete all as specified and directed. (Note : Excavation, returning filling and removing of earth work shall be measured and paid separately):-

Bore of CI/DI Pipe 200mm

Bore of CI/DI Pipe 150mm

Bore of CI/DI Pipe 100mm

Bore of CI/DI Pipe 80mm

S&F of Double Flanged non rising/Rising Spindle Sluice Valve following dia of PN 1.6, as per IS 14846 and IS1538, cast iron as per IS-210 Gr FG260, SS spindle, Bronze body seat ring, Bornze wedge ring, gland packing-jute & hemp, Natural rubber gasket, Bornze stem nut with spining wheel complete including taking out existing unserviceable sluice valve all as directed:-

Sluice valve of 200mm dia

Sluice valve of 150mm dia

Sluice valve of 100mm dia

Sluice valve of 80mm dia

S&F of Butter fly valve following bore confirming to IS-5312 Part-I, pressure rating PN1.6, Flange drilling as per IS-1538, CI valve body diaphragm, CI disc, Disc face ring -rubber, Aluminium hinge pin, CI hinge and bornze body ring complete including taking out existing unserviceable valve all as directed.

150mm dia

100mm dia

S&F of 80mm dia GI tubings (medium grade) with all fittings laid in trenches and connection including taking down unserviceable pipes complete all as specified and as directed.

S&F of 50mm dia GI tubings (medium grade) with all fittings laid in trenches and connection including taking down unserviceable pipes complete all as specified and as directed.

S&F of 40mm dia GI tubings (medium grade) with all fittings laid in trenches and connection including taking down unserviceable pipes complete all as specified and as directed.

S&F of 25mm dia GI tubings (medium grade) with all fittings laid in trenches/walls and connection including taking down unserviceable pipes complete all as specified and as directed. (Note for item No. 8.00 to 11.00 : Excavation, returning filling & removing of earth work shall be measured and paid separately).

Supply and laying in trenches of DI pipe K7 of size 80mm bore including taking down old unserviceable existing CI/DI pipe complete all as specified and as directed.

Supply and laying in trenches of DI pipe K7 of size 100mm bore including taking down old unserviceable existing CI/DI pipe complete all as specified and as directed.

Supply and laying in trenches of DI pipe K7 of size 200mm bore including taking down old unserviceable existing CI/DI pipe complete all as specified and as directed. (Note for item No. 12.00 to 14.00 : Excavation, returning filling & removing of earth work shall be measured and paid separately).

Refixing/relaying of 20mm dia old steel tubing after proper cleaning and connection in new or old position (walls, ceiling, floor, trenches etc) complete all as specified and directed.

Refixing/relaying of 25mm dia old steel tubing after proper cleaning and connection in new or old position (walls, ceiling, floor, trenches etc) complete all as specified and directed.

Refixing/relaying of 40mm dia old steel tubing after proper cleaning and connection in new or old position (walls, ceiling, floor, trenches etc) complete all as specified and directed.

M&L for mild steel Mechanical joint clamp (minimum thickness of 6mm), flap type, GP joint type/any type as per site reuirement for CI, DI pipe of size 80mm along with mild steel nut bolt washer complete all as specified and directed.

M&L for mild steel Mechanical joint clamp (minimum thickness of 6mm), flap type, GP joint type for CI, DI pipe of size 100mm along with mild steel nut bolt washer complete all as specified and directed.

M&L for mild steel Mechanical joint clamp (minimum thickness of 6mm), flap type, GP joint type/any type as per site reuirement for CI, DI pipe of size 150mm along with mild steel nut bolt washer complete all as specified and directed.

M&L for mild steel Mechanical joint clamp (minimum thickness of 6mm), flap type, GP joint type/any type as per site reuirement for CI, DI pipe of size 200mm along with mild steel nut bolt washer complete all as specified and directed.

S&F for gunmetal gate valves with iron wheel head, screwed both ends for iron pipes after taking down old unserviceable gate valve of following sizes:-

Gate Valve of 50mm dia

Gate Valve of 40mm dia

Gate Valve of 25mm dia

S&F Float ball valve brass 20/25mm size high pressure, polythene float an flynut complete, screwed for iron pipe or brass ferrule and fixed including taking down unserviceable float ball valve complete all as specified and directed.

M&L for complete cleaning the area of water supply installation, DG set installations near by OHT including cutting of grass, dismantaling of small plants/ vegitation etc surrounding of installations /stores yard area as per requirement time to time by Eng-in-Charge all as directed.

M&L for attending water supply breakdown/pipe line leakage and pipe line blockage in bldgs and including replacing of Tee,elbow,sockets, nipple & foot valve etc as per requirement in pipe line 20 to 25 mm dia including necessary excavation earth work, demolition of PCC/RCC structure and repair after work completion if required complete all as specified and directed.

All as per Item No 25.00 here in above but 40 to 50 mm dia complete all as specified and directed.

All as per Item No 25.00 here in above but 80 mm dia complete all as specified and directed.

M&L for pressure gauge of 15 mm bore having pressure range 0-10 Kg per Square centimetre with size 100 mm dia including taking down unserviceable pressure gauge complete all as speicified and directed.

M&L for Construction of valve pit chamber with brick masonary with sub class 'B' bricks (one brick thick) in cement mortar (1:6) and necessary PCC (75mm thick) type D2 (1:4:8) as in foundation and 15mm thick plastering on brick work in cement mortar (1:4) including necessary earthwork etc work having internal dimension 120cm x 120cm x 90cm and providing of 3mm thick MS sheet cover duly hinged on 40mm x 40mm x 6mm angle iron frame and embedded on top of chamber by minimum 4 Nos MS hold fast. Necessary locking arrangement shall be provided to the sheet cover for safety. The steel surfaces shall be painted with two coats black bituminous paint over a coat of anti corrosive red oxide primer complete after demolition of old valve pit chamber all as specified and directed.

All as per item No- 29.00 here in before but of size 90x90x90 Cm complete all as specified and directed.

S&F of ERW MS pipe, Heavy duty with welded GI flange (For Column pipe, 3 Meter Long, both side MS flange, 100 mm dia, ISI marked with all tube fittings complete with all fittings required for column pipe lowering like suitable size nuts, bolts and heavy duty washers and including cutting pipes, screwing, wash and for making gorged bends on piping including taking down unserviceable ERW MS pipe complete all as specified and directed.

Supply, fixing and commissioning of Heavy Duty Fully Automatic Star Delta Submersible starter (with short circuit protection) suitable for upto 30 HP pump set with full load line current 50 Amp, Over load relay range- 30-50 Amps confirms to IS-/IEC-60947-4-1 provided with protection degree IP-54, extended wide band coil, complete internal wiring with inbuilt metering & MCB & SPP, suitable for 260-440 Volts, AC, 3 phase including taking down old unserviceable pump starter any type and capacity, compete all as specified and directed.

Supply, fixing and commissioning of Heavy Duty Fully Direct On Line with wideband coil suitable for 3 phase, 415 Volts, 50 Hz AC, upto 7.5 HP supply of relay range 13-21 Amps complete confirms to IS-/IEC-60947-4-1 provided with protection degree IP-54, extended wide band coil, complete internal wiring with inbuilt metering & MCB, suitable for 260-440 Volts, AC, 3 phase including taking down old unserviceable pump starter any type and capacity compete all as specified and directed.

M&L for steel wire rope 8 mm galvanised IWRC as per IS-2262/02 alongwith suitable size clamps & 'U' bolts for holding the submersible pumps and motor of capacity upto 35 HP including taking down unserviceable steel wire rope complete all as specified and directed.

M&L for servicing, overhauling of submersible sewage pump of capacity 3HP/ 5 HP after lifting from the sewage well, disconnecting column pipes and electric connection, transporting to workshop of pump for replacement of all defective monor worn out parts and accessories and lowering and re-install the sewage pump to its original position with necessary arrangement for testing and commissioning complete all as specified and directed.

M&L for servicing, overhauling of submersible sewage pump of capacity 15 HP after disconnection of mechanical type coupling, suction/discharge pipe line and unbolting from foundation base plate, replacement of bearing and re-install the sewage pump to its original position with necessary arrangement for testing and commissioning complete all as specified and directed.

M&L for disconnecting & taking out to Submersible Pump & Motor of Capacity of 7.5-15 HP from Pump Houses and Transporting to nearest Workshop for repairing and dismantling the submersible pump 7.5-15 HP for repair & replace-ment of unserviceable spare-parts including necessary cutting, grinding, drilling, machine work for fixing of spares and re-assembling the Same and Tested in workshop and returning back after repairing and Re-instaltion & lowering in Original Position and Re-connection in water supply installation and Testing complete all as specified and as directed. (Note : (i) Unserviceable spare parts of pump set (like bearing, pump shaft, impeller, suction casing, discharge casing, stage casing, rotor assembly, suction stainer, diffuser, stage bowl, sand guard, stud nut & bolts), shall be included in quoted rate'). (ii) Lifting and lowering of motor and pump from borewell will be measured and paid separately under relevent items)

All as per item No- 39.00 here in before but of Pump & Motor of capacity 20-30 HP complete all as specified and directed.

M&L for disconnecting the centrifugal pump and motor of upto10 HP capacities after disconnection of mechanical type coupling, suction/discharge pipe line and unbolting from foundation base plate loading/unloading the pump and motor to the vehicle and transportation to workshop for repair/replacement/rewinding with super enamelled copper conductor wires 22 gauge and including dismantle & re-assembling the pump setting the impeller & housing for smooth running, replacement of packing gaskets etc. after repair/replacement/maint transportation back from workshop to site, including re-assembling the same, recoupling the pump with motor on base frame, checking the alignment with motor, testing & commissioning on completion and checking upto the satisfaction of Engr-in-Charge.

M&L for lifting of unserviceable Submersible pump and motor (7.5HP to 30 HP) complete set along with submersible cable, SWR from (30 to 40 Mtr) depth by chain pully block and other T&P items complete with disconnecting cloumn pipe of 3 meter length all as specified and directed.

M&L for Lowering of Submersible pump and motor (7.5 HP to 30 HP) after connection the complete by fixing of water proof insulation joints and fixing protective clamps SWR and supply and replacing the rubber gasket, nut, washers and bolts all as required including commissioning complete all as specified and directed.

Developement/flushing of existing borewells of size upto 250mm dia, 200 Mtr depth with drilling compressor including surging and flushing the bore at a pressure of 7 Kg/Sq cm and above complete with compresses air and flushing the sand, mud etc from the bore well till discharge of fresh water, including testing of water yield testing for 8 hours complete all as specified and directed.

Supplying, lowering, fixing, commissioning and testing submersible pumping set with pump and motor in borewell electrically driven, 25HP, 415 Volts, three phase, AC, having a discharge capacity 55 Cum/Hour at a head of 80 meters, 12 stage, delivery/discharge dia as per site requirement including insertion of GI/ERW column pipe with other connected accessories and necessary electrical connections and depositing old pump motor set to MES store yard complete all as specified and directed.

S&F for single phase preventor with accessories suitable for electric motor 7.5 to 30 HP capacity with necessary electrical connection by using proper size of single core copper conductor cable as in repair complete including taking down/ removing old unserviceable one with necessary electrical connection complete all as specified and directed.

Supply and laying PVC insulated and PVC sheathed industrial cable for Submersible pump motors of size 6 Sqmm flat three core copper conductor, 1100 Volts, Confirming to IS-694 including taking down old unserviceable cable complete all as specified and directed.

M&L for testing of water samples for complete Physical, Chemical and Biological Examination of Treated water collected from Pump house Bore well and taken into any state Govt or any NABL approved laboratory for water tesing all as specified and as directed by Engr-in-charge.

M&L for Collection of Treated Sewage water sample (quarterly) from Sewage Treatment Plants of 300/350 KLD capacity from Kanchrapara Military Station and carry out following test from Govt Laboratory or any NABL approved laboratory complete all as specified and as directed by Engr-in-Charge. (a) B.O.D. (Biochemical Oxygen Demand) (b) C.O.D. (Chemical Oxygen Demand) (c) T.S.S. (d) Residual free chlorine, mg/ltr (e) PH value, Oil and Grease (f) Total Coli from Organisms per 100 M (MPN) (g) T O C (Total Organic Carbon)

M&L for preparing of the complete inside and outside surface of the Iron removal plant of 10000 GPH and Oxidation chamber plant cleaning with iron brush and emery paper. Painting the complete inside face with two coat of black bituminous paint suitable for drinking purpose all as directed and outer surface of iron removal filter plant and Oxidation plant including all frontal pipes etc located at Pump House, applying one coat of synthetic enamel plant (as per existing color) with spray painting machine over a coat of red oxide primer (outside) including arrow marking on inlet and outlet pipe line complete all as specified and directed by Engineer-in-Charge. (Note- Quoted rate is deemed to be included for complete cleaning of the IRP and oxidation plant as directed including marking of all pipe line and date of change of Filter media on both plants).

Supply and charging of new life MnO₂ compound (20-25mm size) inside the 10000 GPH capacity Iron removal plant as per site requirement complete all as specified and directed.

Supply, Charging and filling the pressure filter sand (Filter sand assorted size from Barakar (Source: Barakar River) inside the 10000 GPH capacity IRP/pressure filter (type of sand 16/30 mesh) complete all as specified and direct by the Engineer-in-Charge.

Supply, charging and filling the pressure filter gravel/filter media inside the 10000 GPH IRP (source: Barakar River) of size upto 6 mm to 40 mm in alternate layers as per site requirements complete all as specified and direct by the Engineer-in-Charge.

M&L for maintenance/repair of air compressor assembly by cleaning the whole body and air tank, oiling, greasing tightening of all nut, bolts if required, minor repairing to compressor pump and electric motor including replacement of spare parts such as 'V' belt, air pressure gauge, ball bearing, gun metal butterfly valve of any size, pully of any type, compressor oil etc required to be replace as per site requirement and complete all as specified and directed .

S&F in repairs of MCCB, 160 Amps, 4 pole, 36KA breaking capacity ICU at 415 Volt including spreader terminals and connected accessories complete all as specified and directed.

S&F in repairs of MCCB, 250 Amps, 4 pole, 36KA breaking capacity ICU at 415 Volt including spreader terminals and connected accessories complete all as specified and directed.

M&L for earthing with glavanised steel earth plate electrode of size 60cmX60cmX6mm thick buried directly in ground (earth pit not less than 2.25 m deep below the ground level) with top edge of the plate not less than 1.5m below normal ground level, connected to the galvanised earth lead by means of bolts, nuts, check nuts and washers with galvanised iron strips of size 25 x 4 as earthing lead as shown in electrical plate No.3 of SSR Part-I connected to earthing test point all specified or indicated including testing on completion including necessary excavation and earth work in soft/loose soil, returning filling, disposal of surplus soil, earth pit in PCC (1:3:6) type C-1 using 20mm graded stone aggregate pit, funnel, 20mm dia GI medium grade watering pipe , 40mm dia GI medium grade earth lead protection pipe and pre-cast earth pit cover 50mm thick made of RCC (1:1.5:3) type A-1 duly reinforced with 8mm dia TMT bar @150c/c both ways, one lifting handle made out of 10mm dia TMT bar 250 mm long embedded in cover slab and cover, wire, copper lugs etc mesh, charcoal and common salt in alternate layer of 15 cm thick including taking down old unserviceable earthing complete all as specified and directed. (Note: Galvanised iron strip of size 25x4mm upto 7.5m long including testing is deemed to be included with quoted rate).

M&L for sand cushioning to under ground cable in trenches/existing cable trenches/ducts in layers of 8 cm deep before laying the cable and 15 cm deep including required watering and consolidation after laying and stretching the cable complete all as specified and directed.

M&L for brick covering with width equal to length of brick as protection to cable with well burnt sub class ‘B’ bricks of size 250mm x 125mm x 75mm laid dry flat complete all as specified and directed.

Supply and laying XLPE insulated, LT UG cable with aluminium stranded conductor 1100 volts grade, cross-sectional area 95 sqmm, 3.5 core including taking out old unserviceable cable complete all as specified and directed. (NOTE: Excavation/earth work, sand cushioning, cable cover/brick shall be measured and paid separately if required)

Supply and laying XLPE insulated, LT UG cable with aluminium stranded conductor 1100 volts grade, cross-sectional area 70 sqmm, 3.5 core including taking out old unserviceable cable complete all as specified and directed. (NOTE: Excavation/earth work, sand cushioning, cable cover/brick shall be measured and paid separately if required)

Supply and laying XLPE insulated, LT UG cable with aluminium stranded conductor 1100 volts grade, cross-sectional area 95 sqmm, 3.5 core including taking out old unserviceable cable complete all as specified and directed. (NOTE: Excavation/earth work, sand cushioning, cable cover/brick shall be measured and paid separately if required)

Servicing of old unserviceable chlorine dosing system and its connected accessoories such as preparation tank, agigator and service tank, dosing pump, replacement of PVC valve and make the system serviceable with proper dosing of chemical in main pipeline complete all as specified and directed.

SENCO (BID ID -3135854)

S S ENTERPRISE (BID ID -3143170)