Mahanagar Telephone Nigam Limited Tender

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Mahanagar Telephone Nigam Limited - MTNL Tender

Services
Electrical and Electronics
Electrical Works
Eprocure
Opening Date10 Jun 2024
Closing Date20 Jun 2024
Tender Amount₹ 21,94,730 
Notes
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Costs

Description

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BOQ Items

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Replacement of faulty compressor with the factory repaired compressor i/c dismantling of the faulty one from site and re-fixing the new one etc as reqd. (Make : Carrier/ Kirloskar/ Copeland) a) 2.5 TR

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b) 5TR / 5.5 TR/ 3.75 TR.

2

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Providing and installing following size soft/hard copper pipe including cutting, bending, jointing, brazing etc as reqd. for hot and liquid refrigerant line complete as required as per site requirement. a) 7/8"

15

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b) 5/8"

30

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c) 1/2"

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d) 3/8"

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e) 1/4"

15

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Providing & making drain arrangement for AC units with following pipe i/c Tee, Union, Socket & Elbow etc as required. a) 20 mm dia drain pipe.

15

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b) 25 mm dia medium class PVC pipe.

20

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c) 32mm Dia. Drain pipe.

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d) 40 mm dia medium class PVC pipe.

25

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Supplying and installing of following size cable tray made out with slotted angle & squire pipe or slotted sheet material suspended from the ceiling with suspenders including screws,bolts & nuts, painting etc as required. a) Width size not exceeding 150 mm.

12

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b) Width size above 150mm not exceeding 300mm.

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c) Width size above 300mm not exceeding 500mm.

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Pressure testing with nitrogen, pressure standing for at least 8 hr., vaccumzing & commissioning with appropriate refrigerant for following A C units complete as reqd. a) 1.5 TR / 2.0 TR (nominal capacity) AC unit.

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b) 4.0 TR / 5.0TR / 5.5 TR (nominal capacity) AC unit.

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c) 7.0 TR / 7.5 TR (nominal capacity) AC unit (each Circuit).

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d) 8.5TR / 8.75 TR /9TR(nominal capacity) AC unit (each Circuit).

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e) 11.0 TR / 12 TR (nominal capacity) AC unit (each Circuit).

4

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Supplying, laying and fixing of following sizes pvc sheathed copper conductor armoured / unarmoured cable on the existing wall / ceiling for power / control cable etc making connections and testing etc complete as reqd as per site location. (Make: Havells/ KEI/ Polycab) a) 4 x 10 sq. mm copper armoured cable.

55

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b) 4 x 6 Sq. mm copper armoured cable.

35

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c) 17 core unarmoured cable.

30

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d) 4 x 1.5 Sq. mm copper armoured cable.

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e) 3 core 2.5 Sq.mm flexible copper cable.

35

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Providing and fixing 8 SWG dia GI wire on surface or in recess for loop earthing along with existing surface/recessed conduit/ submain wiring/power cable as required.

110

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Supply, installation, testing & commissioning of following accessories for different type of AC units complete as required. a) Condenser fan blade for package/ductable AC units (5TR or above).

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b) V-belt for package AC units.

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c) Dryer for package / ductable AC units (7.5TR to 11 TR).

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d) Contactors for compressor/blower (upto 32 Amps) for package AC units including electrical connections.

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e) Overload relay of compressor/blower for package AC units.

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f) LP Switch for package AC units.

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g) HP Switch for package AC units.

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Supplying and fixing new evaporator coils for following AC unit including dismantling the faulty existing evaporator coil and making proper size copper pipe connection, brazing at joints etc as reqd. a) Evaporator coil for 1.5 TR / 2 TR (nominal capacity) AC unit.

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b) Evaporator coil for 7.0 TR / 7.5 TR (nominal capacity) AC unit.

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c) Evaporator coil for 5TR /5.5 TR (nominal capacity) AC unit.

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d) Evaporator coil for 11.0 TR (nominal capacity) AC unit.

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Supplying & making M. S. Structure work for cond./ Duct supports/trey support/accoustic grid with following accessories i/c cutting, welding of the same etc as reqd. a) 40mm x 40mm x 5mm M. S. Angle iron.

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b) 9mm M S rod.

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c) MS roofing sheet complete with washers,hook, nutbolts for proper fixing arrangement including dismanlting the existing one wherever required making connections etc complete as required..

55

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Supplying and fixing following new condenser coils including dismantling the existing condensor coil and making proper size copper pipe connection, brazing at joints etc as reqd. a) Condenser coil for 1.5 TR / 2 TR (nominal capacity) AC unit.

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b) Condenser coil for 5 TR / 5.5 TR (nominal capacity) AC unit.

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c) Condenser coil for 7.0 TR / 7.5 TR (nominal capacity) AC unit.

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d) Condenser coil for 11.0 TR (nominal capacity) AC unit.

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Supplying and fixing of synthetic fibre media washable filters with frame (Efficiency 90% down to 20 microns) for 7.5TR to 11.0TR ductable / package AC unit.

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Supplying and fixing of new condenser coils for existing installed storage type drinking water cooler including dismantling the existing faulty condensor coil and making proper size copper pipe connection, brazing at joints, pressure testing with nitrogen, pressure standing for at least 8 hr., vaccumzing & commissioning with appropriate refrigerant etc complete as required as per site requirement.

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Pdg. & fixing of electrical/switchgears used for AC plant/centifugal fan/air washer & other works complete as required as per site requirement. a) 63 Ampere rating TPN SFU along with fuse/ FPMCB. (Make: L&T/ GE/ Legrand/ C&S/ ABB/ Havells)

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b) 100 Ampere rating TPMCCB. (Make: L&T/ GE/ Legrand/ C&S/ ABB/ Havells)

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c) 250 Ampere rating TPMCCB. (Make: L&T/ GE/ Legrand/ C&S/ ABB/ Havells)

2

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Rewinding of old defective blower motor of 7.5TR/9 TR/11 TR AC unit.

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Rewinding of old defective condenser fan motor of 7.5TR/9 TR/11 TR AC unit.

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Providing and making MS structure work such as MS platform/duct supports/tray supports/frame for indoor and outdoor AC units i/c cutting, welding, painting with redoxide and then enamel oil paint of approved color etc. complete as reqd. as per site location.

150

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AC Guard CP-Corrosion, prevention coating for brazing joints, U bend, interconnecting copper piping of outdoor and indoor units.

3

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Providing and fixing of 6mm thick cross linked polyethylene insulation for drain / copper piping in order to protect it from air borne impurities complete as reqd. as per site location.

85

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Shifting including dismantling of 1.5 TR / 2 TR / 2.5 TR AC units i.e. disconnects the connection with the help of brazing, removing drain piping, disconnecting the electrical connection and then removing the complete unit (indoor & outdoor), loading / unloading and shifting the unit within the building etc complete as reqd.

10

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Dismentalling of old package/ductable indoor and outdoor AC unit including its electrical /mechanical connection,old GI duct/insulation complete as reqd and shifting it to the desired location as given by Engineer-In-Charge.

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Dismentalling of drain pipes, copper piping, cabling, cable tray and shifting to desired location as given by Engineer-In-Charge.

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SITC of R.A. boxing made of 6 mm water proof ply, slotted angle, fixing with fasteners nuts & bolts etc complete as required as per site location.

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Providing and charging of R-22 gas for top up of refrigerant in the AC units complete as required.

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Minor civil work such as cutting, widening and opening the floor/wall and other civil work for installing refrigerant piping/drain piping/ ducting/electrical cabling for each cutout including finishing the same complete as reqd.

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Less credit for dismantled material and dismantled material shall be the property of contractor.

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