REPAIR AND MAINTENANCES OF CENTRAL PACKAGE AC PLANTS AND CONNECTED WORKS AT SOUTH AND NORTH SIDE RUNWAY UNDER GE NW VASCO

Amount

M&L for cleaning of shell and tube water cooled condensers of the A/C plants of following capacities after dismantling the water lines and headers and cleaning with suitable wire brush and washing soda to remove the dirt and water scaling and refixing the water lines and headers including provision of new gaskets, etc for following AC plants complete all as specified and as directed.

(a) 02X30 TR capacity at OLD BMF AC plant

(b) 03X48 TR capacity at EHU/ERS AC plant

(c) 03X 20 TR capacity at EHU MIG AC plant

(c) 02X37.7 TR capacity at BSF AC plant

(d) 02X7.5 TR NAY (G) Store room AC Plant

(e) 04X60 TR capacity at Mig Simulator AC plant

(f) 06X24 TR capacity at Mag Guard AC plant

(g) 02X12.5 TR capacity at EHU NAY (G) AC plant

(h) 03X5.5 TR Package unit EW wksp AC plant

(j) 03X10 TR NDT Bay AC plant

(k) 03X3.5 TR Air Explosive AC plant

Supply and charging compressor oil of approved make including flushing/cleaning of oil chamber etc complete all as specified and as directed.

Supply and filling Refrigerant gas R-22 /Mafron -22 for AC plant compressor all as specified and as directed.

Supply and filling Refrigerant gas R-407 for AC plant compressor all as specified and as directed.

Supply and fix in repairs ball / roller bearing for pumps and motors of following capacity including taking down old bearing and re installation at site including testing on completion all as specified and as directed.

(a) Upto 10 HP capacity

(b) 12.5 to 15 HP capacity

(c) 20 HP to 30 HP capacity

(d ) 40 HP to 75 HP capacity

M&L for servicing monoblock pumps including dismantling and opening the pump, repair/replacement of defective impeller,replace the worn out bearing impeller, stuffing box, back plates, gland packing mechanical seal and rusted nut, bolts etc assembling property , greasing all movable parts, fixing in position, testing and commissioning all as specified and as directed for the following HP pumps.

(a) 3 HP to 5 HP Pump

(b) 7.5 HP to 10 HP Pump

(c) 12.5 HP to 20 HP pump

Supply and fixing in repair power assembly expansion valve for 60 TR capacity at MIG Simulator AC plant as per sample all as specified and as directed.

Supply and fixing in repair power assembly expansion valve for 30 TR capacity at Old BMF AC plant as per sample all as specified and as directed.

Supply and fixing in repair power assembly expansion valve for 37.7 TR capacity at BSF AC plant as per sample all as specified and as directed.

Supply and fixing in repair power assembly expansion valve for 24 TR capacity at Mag Guard AC plant as per sample all as specified and as directed.

Supply and fix of V-belt size C 2650/ C-102 including taking down old belt all as specified and as directed.

All as per item No- 11 here in before, but of size B-112 all as specified and as directed.

All as per item No- 11 here in before, but of size B- 82 all as specified and as directed.

All as per item No- 11 here in before, but of size B- 78 all as specified and as directed.

All as per item No- 11 here in before, but of size B- 88 all as specified and as directed.

All as per item No- 11 here in before, but of size B- 108 all as specified and as directed.

All as per item No- 11 here in before, but of size B-54 all as specified and as directed.

All as per item No- 11 here in before, but of size B-52 all as specified and as directed.

All as per item No- 11 here in before, but of size B-68 all as specified and as directed.

Supply and fix in replacement of tyre type coupling suitable for 75 HP motor coupled with 60 TR Compressor all as specified and as directed.

Supply and fix in replacement of High pressure control switch as per existing make and type at site all as specified and as directed.

Supply and fix in replacement oil pressure control switch as per existing make and type at site all as specified and as directed.

Supply and fix in replacement low pressure control switch as per existing make and type at site all as specified and as directed.

Supply and fixing in replacement of power contactor assembly complete 63 Amp , 50 KA, 415 V all as specified and as directed.

Supply and fixing power contactor assembly complete MNX-25 including taking down old contactor all as specified and as directed.

Supply and fixing power contractor assembly complete MNX-12 with one NO and NC including taking down old contactor all as specified and as directed.

Supply and fixing power contactor assembly complete MNX 32 including taking down old contactor all as specified and as directed.

Disconnecting wiring carefully and removing defective auxillary power contactor assembly complete and replacing by new one of same make and model , reconnecting wiring and testing on completion all as specified and as directed.

Disconnecting wiring carefully and removing defective auxillary power contactor assembly complete and replacing by new one of size 25 to 40 Amps capacity of same make and model , reconnecting wiring and testing on completion all as specified and as directed.

All as per item No - 29 here in before,but of 12.5 to 20 amps type 3 NA with 1 NO+NC all as specified and as directed.

Supply and fixing in replacement of ML1.5 power contactor with 2NO +2NC Conforms to IS/IEC 60947-4-1 & IEC 60947-4-1 robust and suitable for hostile applications, including standard Coil of operating voltage 110V, 240V and 440V, 50 Hz all as specified and as directed.

All as per item No 31.00 here in before, but for ML 2 power contactor all as specified and as directed.

All as per item No 31.00 here in before, but for ML 3 power contactor all as specified and as directed.

All as per item No 31.00 here in before, but for ML 4 power contactor all as specified and as directed.

Overload relay range 9-15 amps suitable for ML-1/ML-1.5 contactor all as specified and as directed.

Overload relay range 20-33 amps suitable for ML-2/ML-3 contactor all as specified and as directed.

Overload relay range upto 7.5 amps suitable for MNX contactor all as specified and as directed.

Supply and fixing electronic timer ST 100 (3 to 10 Sec) 240V or as per existing Make including taking down of old one all as specified and as directed.

Supply and fixing in repair single phasing preventor Relay (Auto / Manual / Remote Reset Adj.preventor all as specified and as directed.

Supply and fixing single phasing protection Relay 415 VAC, 3 PH 3 W,1 C/O all as specified and as directed.

Supply and fixing under voltage/overvoltage relay 240 VAC, 3 PH4 W,1 C/O all as specified and as directed.

Supply & fixing digital type ammeter panel mounting three phase LED type 96 x 96 mm square including taking down old meter all as specified and as directed.

Supply & fixing digital type voltmeter panel mounting three phase LED 96 x 96 mm square including taking down old meter all as specified and as directed.

Supply and fixing current transformer secondary current 5 Amps and primary current up to 60 Amps including taking down old current transformer all as specified and as directed.

Supply and fixing current transformer secondary current 5 Amps and primary current up to 30 Amps including taking down old current transformer all as specified and as directed.

Supply and fixing in repair thermometer suitable for condenser water line with suitable housing to mount in pipe line 0 – 100 deg C including taking down old themostat all as specified and as directed.

Supply and fixing indicator lamp assembly complete LED type suitable for the existing system supply voltage 230V / 440 V AC including taking down old lamp assembly all as specified and as directed.

Supply and fixing in repair of MCCB 3 pole 415 volts AC , 100 Amps breaking capacity 16 KA, all as specified and as directed.

Supply and fixing in repair of MCCB 3 pole 415 volts AC , 125 Amps breaking capacity 25 KA, all as specified and as directed.

Supply and fixing in repair of MCCB 3 pole 415 volts AC , 200 Amps breaking capacity 25 KA, all as specified and as directed.

Supply and fixing in repair of MCCB 3 pole 415 volts AC , 250 Amps breaking capacity 25 KA, all as specified and as directed.

Supply and fixing in repair of MCB TP 40 to 63 Amps 10 KA, all as specified and as directed.

Supply and fixing in repair of MCB SP 06 to 32 Amps 10 KA, all as specified and as directed.

Dismantling and removing the electric motor, capacity 3 phase 415 Volts from base frame, transporting to workshop checking of winding / leads for any loose connection, varnishing and baking in winding properly after dismantling and then re-assembling properly transporting back to site re-installation, re-alignment and testing complete all as specified and as directed.

(a) Capacity 30 HP to 75 HP

(b) Capacity 10 HP to 20 HP

(c) Capacity upto 7.5 HP

Dismantling the unserviceable electric motor any type or of any capacity and transporting to reputed workshop, taking out old and burnt winding wire and rewinding with super enameled copper winding wire of existing gauge and size with insulating materials, varnishing and baking etc, re-fixing the same at site and re-alignment, testing and commissioning complete all as specified and as directed.

Taking out old and unserviceable PVC fills (600 x 150 x150 mm) of cooling tower of any capacity AC plant and replacing with new one including setting complete all as specified and as directed.

Supply and fixing in repair fabricated micro filter upto 90 micron made out of GI channel frame overall size 55 cm x 55 cm x 5 cm including nylon micro filter and wire mesh covered front and back all as per sample given including taking down old micro filter all as specified and as directed.

All as per item No 57 here in before,but for overall size 60 cms x 60 cms x 5 cm .

All as per item No 57 here in before,but for overall size 63 cms x 50 cms x 5 cm .

All as per item No 57 here in before,but for overall size 52 cms x 47 cms x 5 cm .

All as per item No 57 here in before,but for overall size 100 cms x 120 cms .

Supply and fix in repair DOL starter suitable for 5HP motor capacity 9 to 14 Amp complete with over load relay , single phasing preventer under volt release in existing enclosure etc all as specified and as directed.

Supply and fix in repair DOL starter suitable for 10 HP motor capacity 14 to 23 Amp complete with over load relay , single phasing preventer under volt release in existing enclosure etc all as specified and as directed.

Nitrogen testing for the following capacity of compressors including condensing unit and gas piping complete as per the manufacturer instructions and entire satisfaction of the Engineer in Charge. Note :- Nitrogen pressure should be held without any drop in pressure inside the unit continue for 24 hours.

(a) 02X30 TR capacity at OLD BMF AC plant

(b) 03X48 TR capacity at EHU/ERS AC plant

(c) 03X 20 TR capacity at EHU MIG AC plant

(c) 02X37.7 TR capacity at BSF AC plant

(d) 02X7.5 TR capacity NAY (G) Store room AC Plant

(e) 04X60 TR capacity at MIG Simulator AC plant

(f) 06X24 TR capacity at Mag Guard AC plant

(g) 02X12.5 TR capacity at EHU NAY (G) AC plant

(h) 03X5.5 TR Package unit EW wksp AC plant

(j) 03X10 TR NDT Bay AC plant.

(k) 03X3.5 TR Air Explosive AC plant.

M&L for preparation of old painted surfaces by removing dust, rust etc and, applying two coats of synthetic enamel paint with spray gun of approved make and colour for cooling tower, condensing pipe line condenser water pumps including all pipe line valves etc. of 5 TR to 20 TR Capacity Plant all as specified and as directed.

M&L for preparation of old painted surfaces by removing dust, rust etc and, applying two coats of synthetic enamel paint with spray gun of approved make and colour for cooling tower, condensing pipe line condenser water pumps including all pipe line valves etc. of 24 TR to 60 TR Capacity Plant all as specified and as directed.

Supply and fix CT fan (with hub and fan blade) of capacity 75 TR to 150 TR cooling tower all as specified and as directed.

Supply and fix CT fan (with hub and fan blade) of capacity upto 60 TR cooling tower all as specified and as directed.

Supply and fixing union 40 mm of water tower all as specified and as directed.

Supply and fixing union 32/25 mm of cooling tower all as specified and as directed.

Supply and fixing gate valve 40 mm of cooling tower all as specified and as directed.

Supply and fixing gate valve 32/25 mm of cooling tower all as specified and as directed.

S & F in repair chilled water sensor for AC Plants of various capacity all as specified and as directed.

S & F loading/unloading switch assembly for compressor of capacity upto 15 TR all as specified and as directed.

S & F loading/unloading switch assembly for compressor of capacity from 20 TR upto 30 TR all as specified and as directed.

S & F loading/unloading switch assembly for compressor of capacity from 45 TR upto 60 TR all as specified and as directed.

S & F pressure gauge for neon gases 0 to 25 kg all as specified and as directed.

S & F pressure gauge for freon gases 0 to 16 kg all as specified and as directed.

S & F microprocessor for compressor of capacity from 20 TR to 37.7 TR all as specified and as directed.

S & F microprocessor for compressor of capacity from 45 TR to 60 TR all as specified and as directed.

S & F cooling tower nozzles 1/4'' size all as specified and as directed.

S & F block bearing for air handling unit of any size all as specified and as directed.

Realignment of compressor and motor of any capacity on existing foundation all as specified and as directed.

S&F in repair pre-filter capsule suitable for accommodating five units of corrosion & scale inhibitor sealed refill of 51.0cm for cooling tower application all as specified and as directed.

S&F in replacement of strip heater 2 KW capacity including making electrical connections with main supply complete all as specified and as directed.

All as per item No 85.00 here in before, but for strip heater capacity 3 KW capacity.

Evacuation of gas/ Refrigerant from the system into the empty cylinders before dismantling of old unserviceable compressor from condensing or chiller unit, dismantling UNSV compressor , and Supply, installation, testing & commissioning of scroll compressor of capacity 12.5 TR , 3 Phase, 415 V , model No.SM185S4RC (Make- Danffoss) , self-lubricating complete including HP and LP sensors with control wiring , connecting and rewiring with microprocessor based control panels and all as specified and as directed. Note:- The rate quoted by the contractor for the above item shall be deemed inclusive of the following:- (i) Refrigerant storage containers. (ii) Refrigerant pumping system. (iii) Recharging of refrigerant required to top up into the system to achieve desired suction and discharge pressure (iv) Rewiring / reconnection of the system with Microprocessor based control panel from authorised manufacturers.

S&F in replacement of oil pressure sensor suitable for voltas 5H-60 compressor as per sample available at site complete all as specified and as directed.

S&F in replacement of High pressure sensor suitable for voltas 5H-60 compressor as per sample available at site complete all as specified and as directed.

S&F in replacement of Low pressure sensor suitable for voltas 5H-60 compressor as per sample available at site complete all as specified and as directed.

S&F in replacement of unloading solenoid assembly suitable for voltas 5H-60 compressor as per sample available at site complete all as specified and as directed.

S&F in replacement of magnetic coil for unloading solenoid suitable for voltas 5H-60 compressor as per sample available at site complete all as specified and as directed.

S&F in replacement of extension pipe with closing valve 1/4"X1/4' as per sample available at site complete all as specified and as directed.

M&L for oil differential pressure control high pressure and low pressure switch, rewiring of the control and connecting to starter panel complete all as specified and as directed.

S&F in replacement of HDPE make water tank of 1000 litre capacity ISI marked with air vent, drain, overflow and make up connection with PVC High Pressure float valve complete all as specified and as directed.

M & L for taking out old worn out cladding and supply and rapping glass wool and aluminium cladding to cover the GI tubing 100/80/65 mm bore to avoid heat conduction all as specified and as directed.

S & F in repairs liquid line drier 5/8" x 5/8" all as specified and as directed.

All as per item No 97.00 here in before, but for in suction side of size 1/2" all as specified and as directed.

S & F in repairs cooling tower fan blade assy of size 24 to 30" (MN 2 model of M/s Mihir Engineers) all as specified and as directed.

S & F in repairs water line strainer 2 1/2" dia size with GI flange including necessary joint arrangement complete at NDT Ejection Bay AC plants all as specified and as directed.

S & F in repairs condensor monoblock water pump set 3 HP 3 phase capacity with suitable head and discharge ammunator store including necessary PCC foundation work and electric/ water connection complete all as specified and as directed.

Supply only Pressure Gauge 0 x 300psi (100mm) all as specified and as directed.

M & L for Overhauling/ repair of all refrigeration line valve , globe valves, angle way valves of any size including replacement of Teflon seat, 'O' ring packing glands etc all as specified and as directed.

M & L for replacement of tarpaulin canvas cloth connecting the air outlet and main duct of AHU as per existing size and thickness including provision of chain with Zip for taking Wet/ Dry Bulb reading, angle iron complete, including taking out unserviceable all as specified and as directed.

M & L for side/ lower tray panels for coil section made out of Mild steel plain sheet of thickness 1.60 mm, cut of size, holes punched, including round headed screws, or rivets and fixed to steel framing as required and painting with two coat of synthetic enamel grey paint over a coat of red oxide primer for Air handling all as specified and as directed.

S & F in repairs Electronic New Microprocessor suitable for 8.5 TR package type AC plant including electrical connection etc all as specified and as directed.

S & F in repairs Thermal over load relay 2.5 to 9 Amp all as specified and as directed.

S & F in repairs Pedestal Bearing Model : NTN F- of any size AHU blower shaft all as specified and as directed.

Dismantling carefully and removing of old U/S compressor's sealed unit of 5.5Ton capacity from package type Air conditioner and supply and fix new sealed unit of 5.5 Ton capacity complete with all standard accessories as per existing AC plant all as specified and as directed. Note:- Sealed unit shall be purchased from authorised dealers/agents

Dismantling carefully and removing of old U/S compressor's sealed unit of 8.5Ton capacity from package type Air conditioner and supply and fix new sealed unit of 8.5 Ton capacity complete with all standard accessories as per existing AC plant all as specified and as directed. Note:- Sealed unit shall be purchased from authorised dealers/agents

Rewiring of all electrical controls including Micro- processor, electric contactor, supply and fix in replacement of auxiliary contactor for one of central AC plant package type AC plant of any capacity all as specified and as directed.

S & F fix in repairs fabricated micro filter upto 90 micron made of HDPE overall size 100 cm x 120 cm (as per sample) all as specified and as directed.

S & F in repairs of Thermostatic Expansion Valve assembly complete Model : MVE -7 suitable for gas F-22 all as specified and as directed.

S & F in repairs Thermostatic Expansion Valve assembly complete Model : MVE-5 suitable for gas F-22 all as specified and as directed.

Dismantling of damaged cooling coil of 5TR to 20 TR AC plant capacity and repairing of cooling coil to distributor and row paralleled 5/16'' size and from distributor to expansion valve and room expansion valve to compressor suction line with 11/8" size of copper pipe including following items :- (a) Expansion valve 5 TR-02 Nos (b) Distributor -02Nos (c) Filter drier 5/8x5/8-02 Nos (d) Hand shut off valve 5/8"-02Nos

All as per item No 115 here in before, but for 20 TR to 60 TR AC plant all as specified and as directed.

S & F in repairs DOL starter MK-1 complete with over load relay, SPP under volt release etc all as specified and as directed.

S & F in repairs DOL starter suitable for 5HP TO 10HP motor MK-1 complete with over load relay, single phasing preventer under volt release etc all as specified and as directed.

Supply and fix Starter box suitable for 5.5 TR package type unit including suitable accessories like power contactor three phase, 415 volts, MCBs, connector single preventer over load relay, control wiring with arrangement of auto/manual control ON/OFF switch and including sheet metal enclosure of 2 mm thick CRCA sheet of adequate size with powder coated for enclosing with necessary fixing arrangements in AC plant unit by providing nuts, bolts, washers etc complete all as specified and as directed.

Supply and fix pipe MS ERW steel including all special heavy duty duly welded with 16 mm thick MS flange and drilled for fixing 16 mm dia bolt & nuts washer including rubber gasket etc all as specified and as directed of following sizes :-

(a) 100 mm dia

(b) 80 mm dia

(c) 50/63 mm dia

(d) 32/40 mm dia

Charges for attending break down of AC plant of 5 TR to 20 TR capacity by only auth OEM rep / team for fault finding including attending repairs as and when required such as No start condition of AC plant and repairing, starting the AC plant till smooth running and setting up the alignment/required parameters of all major parts such as fan belt, compressor, gas charge, cooling tower, power contactor, starter, MCCBs, Micro processor based control panel, pumps etc as required in ground/as ordered by EIC all as specified and as directed. Note : The payment for the above shall be made to Contractors after submitting the original invoice only

All as per item No 121 here in before, but for AC plant capacity 24 TR to 60 TR all as specified and as directed.

Heat Control