83923/E8 REPAIR/ MAINT OF CENTRAL AC PLANT, PACKAGE TYPE OF AC PLANT ALONGWITH REPAIR/MAINT OF ALL TYPES OF DUCTS, DIFFUSER, LT PANEL AND OTHER CONNECTED WORKS AT AFS JOR UNDER GE (AF) JORHAT

Amount

CENTRAL TYPE AC PLANT 40 TR CAPACITY (3 x 20 TR) Material and labour for opening head of open type reciprocating compressor 20 TR Capacity of make: ACCEL, MODEL: SMC-6-65 including dismantling completely 20 TR capacity compressor parts in presence of MES representative and display all the parts/ components of compressor for inspection of Engineer-in-Charge to ascertain the serviceability of existing parts for repair/ replacement of unserviceable/ defective parts, re-assembling and re-installation of compressor in original position after repair, reconnecting and making functional in all respect complete all as specified and as directed. (Note:- Spare parts shall be measured and paid separately under item here-in after)

Supply only for shaft oil seal with 'O' rings.

Supply only for suction and dicharge valve plate.

Supply only for ring set for piston..

Supply only for oil filter.

Supply only for loader/ unloader as approved.

Supply only for main bearing.

Supply only for crank shaft model SMC-6-65.

Supply of for connecting rod.

Supply only for half section bearing.

Supply only for of piston with pin and ring set.

Supply only for suction valve retaining plate.

CENTRAL TYPE AC PLANT (15 TR CAPACITY) (3 x 7.5 TR) Material and labour for opening head of open type reciprocating compressor 7.5 TR capacity of make: FREEZE KING including dismantling complete 7.5TR capacity compressor parts in presence of MES representative and display all the parts/ components of compressor for inspection of Engineer-in-Charge to ascertain the serviceability of existing parts for repair/ replacement of unserviceable/ defective parts, re-assembling and re-installation of compressor in original position after repaired, reconnecting and making functional in all respect complete all as specified and as directed. (Note :- Spares parts shall be measured and paid separately under relevant items here-in-after).

Supply only for head gasket set as approved.

Supply only for oil filter as suitable.

Supply only for shaft seal.

Supply only for spring guard as suitable.

Supply and fix for suction and discharge valve plate suitable for compressor 7.5 TR complete all as specified and as directed.

Supply and fix for 'V' belt B-76 as approved and suitable including taking down old unserviceable one complete all as specified and as directed.

Supply and fix for refrigerant high pressure gauge as approved and suitable including taking down old unserviceable one complete all as specified and as directed.

Supply and fix for refrigerant low pressure gauge as approved and suitable including taking down old unserviceable one complete all as specified and as directed.

Supply and fix for LP/ HP cut out with operating range at 0/ PSI to 30/ PSI as approved and suitable including taking down old unservice able one complete all as specified and as directed.

Supply and fix for oil pressure gauge as approved and suitable including taking down old unserviceable one complete all as specified and as directed.

Supply and fix for safety valve for condenser as approved including taking down old unserviceable one complete all as specified and as directed.

Supply and fix for 'V' belt B-85 as approved and suitable including taking down old unserviceable one complete all as specified and as directed.

Supply and filling only compressor oil as approved and suitable for compressor of central AC plant complete all as specified and as directed

Supply and filling only refrigerant gas R–22 as approved and suitable for compressor of central and package AC plant/ unit of various locations complete all as specified and as directed.

Supply and filling only refrigerant gas R–407 C as approved and suitable for Compressor of splitductable AC unit at Auditorium complete all as specified and as directed.

Supplt and fix for 'V' Belt T-51B as approved and suitable including taking down old unserviceable one complete all as specified and as directed.

PACKAGE TYPE AC PLANT Taking down defective compressor sealed unit 3.75 TR capacity suitable for R-132a refrigerant, 3 phase 415 volt after disconnecting all electrical connections and replaced the same with new compressor of same capacity and including flushing the old gas and recharging with appropriate quantity of R-132a refrigerant gas complete all as specified and as directed.

All as per serial item No.30 here-in-before but for 5.5 TR capacity complete all as specified and as directed.

All as per serial item No. 30 here-in-before but for 5.0 TR capacity complete all as specified and as directed.

Taking down defective compressor sealed unit 2.5 TR capacity, 3 phase 415 volt of split ductable type AC unit after disconnecting all electrical connections and replaced the same with new compressor of same capacity and including flushing the old gas and rechanging with appropriate quantity of refrigerant gas complete all as specified and as directed.

Supply and fix for 'V' belt A-32, as approved and suitable for air blower motor including taking down old unserviceable one complete all as specified and as directed.

Supply and fix for PCB with FRC cable for package type AC unit 11TR capacity of make: VOLTAS complete all as specified and as directed.

Supply and fix for printed circuit board for package type AC unit 10 to 15 TR of make: BLUE STAR complete all as specified and as directed.

Supply and fix for printed circuit board for split ductable AC plant unit 17TR of make: BLUE STAR complete all as specified and as directed.

REPLACEMENT OF LT PANEL ELECTRICAL SPARE COMPONANTS Supply and fix for 1NO+1NC for Contactor CL-25A310T as approved and suitable for LT panel starter of central AC plant including taking down old unserviceable one complete all as specified and as directed. Make: GE/ L&T/ BCH/ SIEMENS as approved.

Supply and fix for contactor CL-00A310T as approved and suitable for LT panel starter of central AC plant including taking down old unserviceable one complete all as specified and as directed. Make: GE/ L&T/ BCH/ SIEMENScomplete all as specified and as directed.

S&F Contactor CL-01A310T as approved and suitable for LT Panel Starter of CENTRAL AC PLANT including Taking down Old Unserviceable One, complete all as specified and as directed. Make : GE / L&T/,BCH/SIEMENS

Supply and fix for contactor CL-02A310T as approved and suitable for LT panel starter of central AC plant including taking down old unserviceable one complete all as specified and as directed. Make: GE/ L&T/ BCH/ SIEMENS as approved.

Supply and fix for contactor CL-06A311M as approved and suitable for LT panel starter of central AC plant including taking down old unserviceable one complete all as specified and as directed. Make: GE/ L&T/ BCH/ SIEMENS as approved.

Supply and fix for contactor relay MXO coil voltage 240 volt as approved and suitable for LT panel starter of package type AC plant unit including taking down old unserviceable one complete all as specified and as directed. Make: SIEMENS/ L&T/ BCH/ GE as approved.

Supply and contactor relay SICOP 3TF, 32/35, coil voltage 415 volt as approved and suitable for LT panel starter of package type AC unit 7.5 TR capacity at including taking down old unserviceable one complete all as specified and as directed. Make: Simens/ L&T/ BCH/ GE as approved.

Supply only for MCB TP 63 Amp of make: L&T.

Supply only for MCB TP 32 Amp of make: L&T.

Supply only for MCCB TP 125 Amp, 415 volt 50 Hz 25KA of make: L&T.

Supply and fix for pre filter box type having dust filtration capacity 90% efficiency down to 10 micron of size 500 x 400 x 50mm complete all as specified and as directed.

Supply and fix for PVC fills of size 600x300x150 mm for cooling tower complete all as specified and as directed.

REPAIRS/ MAINT, WINDING TO MOTOR Taking down carefully burnt out electric driven compressor motor 25 HP capacity WWR from foundation channel after disconnecting main electric supply from the motor starter panel, dismantling motor carefully for checking, removing to workshop for repairing, taking out burnt, coils from the slots of stator, other accessories such as ball bearing, rotor, cleaning the stator slots and rewinding the same with new supper enameled copper winding wire, make: Devidayar with appropriate gauge and quantity, heating, varnishing with doctor Beck's insulated varnish, re-assembling the same after greasing the ball bearing motor refixing to original position after repairing from workshop, reinstallation on existing channel and reconnecting to electric supply, commissioning and testing complete all as specified and as directed.

All as per serial item No.50 here-in-before but for 12.5 HP capacity of compressor motor

All as per serial item No.50 here-in-before but for 7.5 HP capacity Condenser/Chiller Water Pump Motor.

All as per serial item No.50 here-in-before but for 5 HP capacity Cooling Tower motor/AHU motor and Air Blower motor

All as per serial item No.50 here-in-before but for 3.0 HP capacity Water Pump Motor

All as per serial item No.50 here-in-before but 2.5 HP Capacity of Air Blower of Condensing Fan Motors of PACKAGE TYPE UNIT

Material and labour for preparing old painted surface of equipments such as compressor, condensor, chiller, motor, copper pipe, GI pipes, pump set, belt guard, cooling tower etc installed at central type AC plant of capacity 3 x 20 TR and applying two coats of synthetic enamel paint over a coat of red oxide primer. Note: The colour code of equipment/pipes will be same as per existing.

All as per serial item No.56 here-in-before but for central type AC plant 3 x 7.5 TR capacity.

Material and labour for descaling of copper tubes of condensor suitable for 20 TR compressor by circulating discaling solution (diluted HCL) with pump and rodding into the tubes for removing all deposited materials complete all as specified and as directed.

All as per serial item No.58 here-in-before but suitable for condensor for 7.5 TR compressor.

Servicing of AHU complete of various capacities including cooling coil, filters, removing dirt, scales etc with cleaning chemicals (coil cleaner) and painting the outer body with a coat of synthetic enamel paint of the existing colour code complete all as specified and as directed.

Servicing of condensor unit including cleaning of condensor coil with and fins with solvent material by using pressure water pump, servicing fan motor complete and painting with one coats of enamel paint on outer body complete all as specified and directed.

Dismantling carefully ceiling below indoor unit of package type AC plant of capacity 17 TR at Auditorium, dismantling worn out insulation, drain water collecting tray and material and labour for replacement of worn out insulation and fabrication of water collecting tray with 20 SWG GI sheet as required at site not exc.1.5 m x 1.5 m, reassembling the ceiling including replacement of broken/damage ceiling board as per existing complete all as specified and as directed.

Servicing of air blower including replacement of motor, block bearing, blower shaft remetaling, polishing and reassembling complete all as specified and as directed.

Supply and replacement of damper of the plenum of AHU of any size including replacement of canvas cloth and bolts nuts etc. complete all as specified and as directed.

Supply and replacing of liquid line filter drier for use with CFC, HCFC and HFC, R22, R134a, of any capacity complete all as specified and as directed. Make: EMERSON/CATCHALL/ INFOSS as approved.

Supply and replacing of expansion valve including taking down of valve of capacity up to 5.0 TR complete all as specified and as directed.

All as per serial item No.66 here-in-before but for valve of capacity up to 5.5 TR.

All as per serial item No.66 here-in-before but for valve of capacity up to 7.5 TR.

All as per serial item No.66 here-in-before but for valve of capacity up 40 TR.

Supply and replace for condensor motor fan blade suitable upto 0.5HP 3 phase 415 volt motor including taking down unserviceable one complete all as specified and as directed.

Supply and replace for condensor motor epoxy coated weather proof upto 0.5HP 3 phase 415 volt with bracket and leg including taking down unserviceable one complete all as specified and as directed.

Supply and replace for 'Y' strainer in condensing water line complete with MS body of size 80/50 mm including modification of pipe line for refixing the strainer in another location of the water pipe line and replacement of flanges and nuts & bolts, packing ete complete all as specified and as directed.

Supply and replace for cooling tower sprinkler with gear box, drive shaft, FRP fan suitable to motor assembly, base, bearings and arms stay supporter etc suitable for 40 TR AC plant including taking down unserviceable one complete all as specified and as directed.

Supply and fix for heating rod/ element of capacity 2KW and taking down burnt electric heating rod/ element incliding electric connection from AC plant and complete all as specified and as directed.

Supply and replace for solenoid valves, C castle, valve consists of MKC 2 coil and series 2 body MOO-275 type SWP-500 suitable for 15 TR central AC plant (General purpose solenoid valve) complete all as specified and as directed. Make - Danfoss/ Infoss as approved.

Supply and replacing for solenoid valves, C castle, valve consists of MKC 2 coil and series 2 body MOO-275 type SWP-500 suitable for 20 TR AC plant (General purpose solenoid valve). Make - Danfoss/ Infoss as approved.

Supply and fix for flexible PVC insulated copper conductor wire, nominal cross sectional area 16 Sqmm, single core for connection of outer/ inner unit/ panels including taking down old unserviceable wire complete all as specified and as directed. Make : Havells/ Finolex/ Payal as approved.

Supply and fix for flexible PVC insulated copper conductor wire, nominal cross sectional area 6 Sqmm, single core for connection of outer/ inner unit/ panels including taking down old unserviceable wire complete all as specified and as directed. Make: Havells/ Finolex/ Payal as approved.

Supply and fix for flexible PVC insulated copper conductor wire, nominal cross sectional area 10 Sqmm, single core for connection of outer/ inner unit/ panels including taking down old unserviceable wire, complete all as specified and as directed. Make: Havells/ Finolex/ Payal as approved.

Supply and fix for flexible PVC insulated copper conductor wire, nominal cross sectional area 1.5 Sqmm, 3 core for connection of OP/ LP connection of AC plant including taking down old unserviceable wire complete all as specified and as directed. Make: Havells/ Finolex/ Payal as approved.

Dismantling/ opening the existing burnt out/ unserviceable MCCB 4 pole including disconnecting the electrical connection and Supply and fix for MCCB 200 Amp 415 volt 50 HZ 35KA, 3 Pole (thermal setting 80-100% in and magnetic setting 6-10), Icu=Ics100% capacity suitable for indoor electric panel board including making the electrical connection with aluminum thimbles as per existing position complete all as sepcified and as directed. Make- L&T/ GE/ Havells as approved.

Supply and fix for MCCB 100 Amp 4 pole, 16 KA, 415V, 50Hz capacity suitable for LT panel of central and package AC plant including taking down old unserviceable one complete all as specified and as directed. Make: L&T/ GE/ Havells as approved.

Supply and fix for MCCB 63 Amp 3 pole, 16 KA, 415V, 50Hz capacity as approved and suitable for LT panel of central and package AC plant including taking down old unserviceable one complete all as specified and as directed. Make: L&T/ GE/ Havells as approved.

Supply and fix for isolator 4 pole, 63Amp, 415V, 50Hz capacity suitable for LT panel of central and package AC plant including taking down old unserviceable one complete all as specified and as directed. Make: L&T/ GE/ Havells as approved.

Supply and fix for isolator TP, 63Amp, 415V, 50Hz capacity as approved and suitable for LT panel of central and package AC plant including taking down old unserviceable one complete all as specified and as directed. Make: L&T/ GE/ Havells as approved.

Supply and fix for isolator TP, 32/ 40 Amp, 415V, 50Hz capacity suitable for LT panel of central and package AC plant including taking down old unserviceable one complete all as specified and as directed. Make: L&T/ GE/ Havells as approved.

Supply and fixing digital ammeter 0-300 Amps of size 4x4", capacity, 3 phase, 415 volt, suitable for LT panel board including electrical connection with suitable size of copper wire and taking out unserviceable/ brunt ammeter complete all as directed and as specified, Make: L&T/ AE/ HPL as approved.

Supply and fix for digital voltmeter 0-500 volt rage of size 4x4", 3 phase, 415 volt suitable for the LT panel board with suitable size of copper wire including taking out unserviceable/ brunt voltmeter, complete all as directed & specified, Make: L&T/ AE /HPL as approved.

Supply and fix for indicator LED assy three piece per set suitable for 230 volt matching with exisisting one for the LT panel board where directed including taking out old unserviceable indicator assy and electrical connection with suitable size of copper wire complete all as specified and as directed. Make: AE/ HPL as approved.

Supply and fix for cast iron sluice valve PN-1.6 with flanged ends 80mm nominal bore ISI marked complete with gun metal or stainless steel spindle and cast iron cap including rubber/ fiber board gasket, nuts, washers etc including taking down old unserviceable sluice valves complete all as specified and as directed. Make: KIRLOSKAR/ BIR/ SANT/ ZOLOTO as approved.

Supply and fix for lugs copper 95 sqmm of required type suitable at site complete all as specified and as directed.

Supply and fix for lugs copper 16sqmm of required type suitable at site complete all as specified and as directed.

Supply and fix for thermometer suitable for reading wet bulb and dry bulb temperature with digital type complete all as specified and as directed.

Supply and fix for temperature and humidity meter suitable for reading for temperature and humidity complete all as specified and as directed.

Material and labour for overhauling of condenser pump, monoblock pumpset complete with cleaning of impeller strainer and including replacement of rubber gasket, gland packings, bearing etc for 3 HP capacity complete all as specified and as directed.

All as per serial item No.97 here-in-before but for capacity 5 HP.

Taking down defective burn out cooling tower motor of capacity 5 HP after disconnecting all electrical connections and replaced the same with new cooling tower motor of same capacity including testing and commissioning complete all as specified and as directed.

Supply and fix for voltage stabilizer for automatic operation, single phase, naturally air cooled, indoor type and designed for input variation between 170 volt to 250 volt with output voltage at 230 volt with accuracy ±2.5% of capacity 5 KVA complete all as specified and as directed.

Material and labour for nitrogen gas pressure testing by pressurising with nitrogen gas upto 300 psi the complete system to find out the leakage and maintaining pressure for 24 hours and rectifying leakages in the system, vacuumising complete system of central A/C plant with double stage vacuum pump of 2kg/Sq cm vacuum pressure complete all as specified and as directed.

Supply, laying commissioning and testing of LT XLPE under ground cable of size 50 Sq mm 3.5 core 1100 volts grade armoured, PVC sheathed with aluminium conductor heavy duty confirming to IS 1554 laid in trenches, fixing on wall, under road crossing through protection pipe etc complete all as specified and as directed.

Excavation in trenches n.exc 1.5m wide and n.exc 1.50m depth for laying of cables etc and getting out in soft/ loose soil complete all as specified and as directed.

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

Removing of excavated material (soil) to distance not exceeding 50metre and deposited where directed at a level not exceeding 1.5 metre above the starting point complete all as specified and as directed.

Material and labour for dry river sand as in sand cushioning in trenches/ ducts for protection of underground cable (below, above and around the UG cable laid in trenches) of 23 cm spread thickness ( 8 cm in depth before laying the cable and 15 cm in depth after laying the cable) and consolidated (punned) up to 18 cm thickness complete all as specified and as directed. Note : - Thickness after punning shall be measured for payment

Material and labour for sub class 'B', old size bricks for cable protection cover, common burnt clay building bricks, laid dry and flat abutting each other with width equal to length of brick and gap between adjacent bricks not exc.10mm complete all as specified and as directed.

LESS SCHEDULE OF CREDIT (NOTE : The bidders are required to quote the same amount as inserted in estimated rate column against the group of credit items. For details refer Schedule of Credit including notes therein of tender documents.

M/S BARUA REFRIGERATION WORKS

NIHAR ENTERPRISE