Repair and maintenance of AC plants at storage sheds at AFS Amla

Amount

M&L for opening of shell and tube water cooled condensers of both side including dismantling the water lines for inlet and outlet of condenser of AC plant.Removing scale/sludge precipitated in copper tube by push and pull method with iron rod connected with steel wire brush of suitable size as per condender tube size at the entire length of condenser that scrapping down the sludge precipitated in side the tube .Closing both side of condenser and circulating the descaling solution in all tubes of condenserof each plant through the circulatiing pump and allows holding it for 30 mins for chemical reaction.Opening the condenser both sides and clean with iron rod connected with nylon brush of suitable size as per condenser copper tube size at the entire length of condenser to ensure that descaling process has been complete then closing the condenser at both end and circulating clean water in all tube of condenser of each plant and drain out the process will be continue till the satisficaion of E-in-C then fixing new gasket for both ends of condenser of plant tighten with new nut end bolt for the following size AC plant all as specified and directed.

3 x 35 TR capacity Shed No. 22

3 x 12 TR capacity Shed no. 54

3 x 15 TR capacity Shed no. 12 & 13

3 x 10 TR capacity Shed no. 53

Material and labour for de-scaling of chiller unit AC central type of following capacities with copper tubes by removing nuts & bolts, nitrile sheet, rubber gasket, water connection etc. and filling up of de-scaling acid HCL in condenser and manually cleaning of copper tubes with using nylon brush of superior quality, iron rod for removing of complete scaling from tubes and water circulation through condenser including replacement of rubber gasket, nut & bolts complete all as specified and directed

3 x 35 TR capacity Shed No. 22

3 x 12 TR capacity Shed no. 54

Taking down electric induction motors of following capacities after disconnecting incoming electric connection, & removing to work shop for repairs/ rewinding.Dismantling the motor, separating the parts such as rotor , stator, cleaning of all dismantled parts, taking down burnt / damaged winding cleaning the slots , packing the slots with insulated packing material, rewinding with super enameled copper winding wire of same guage varnishing the stator & drying in oven reassembling the motor complete with and including new packing material, new set of bearings, terminal plate, transporting back to plant room, material, new set of bearings, terminal plate, transporting back to plant room,

S&F in repairs CT fan roller bearing of size 30204 J2/Q Make : SKF/ NRB

S&F in repairs Bearing for cooling tower motor 1.5 / 2 HP Make : SKF/ NRB

S&F in repairs Ball brass valves, high pressure with Polyethylene float and fly nut complete screwed for Iron pipe or brass ferrule of size 20 mm dia

M&L for overhauling of compressor Capacity 15TR Make: Voltas complete and designed parameter including the following complete all as specified and directed by Engr-in-charge. (i) Replacement of crankshaft of suitable size including dismantling transporting to authorised approved workshop and back including refixing after repair and testing. (ii) Complete dismantling of each part of compressors cleaning each part of compressor carrying out preventive work like oiling, greasing,replacing defective parts reassembling compressor complete with vacuum test and pressure test at specified pressure to detect leak and again same tests after leak repair to ensure leakage in complete system. (Shed no. 12/13)

Supply only following parts of existing make 15TR capacity compressor complete all as specified and directed by Engr-in-charge.

Bushing with collar

Half section bearing

Connecting rod assembly

Shaft seal assembly

Bushing for piston pin

Piston

Piston rings

OiI rings

Cylinder liner

Oil pressure valve

Suction valve ring plate

Discharge valve ring plate

Liquid line strainer

Oil strainer and plate

Castle nuts

Split pins

Crankshaft

Set of gasket

Set of neoprene"O' ring

Suction stop valve assembly

Discharge stop valve assembly

Taking down UNSV liquid line filter drier and S&F liquid line filter drier as per existing make and specification and suitable size to fixing with existing refrigerant line for 11/12 TR capacity compressor of AC plant all as specified and directed. (Shed no. 22,54)

Taking down UNSV liquid line filter drier and S&F liquid line filter drier as per existing make and specification and suitable size to fixing with existing refrigerant line for 8.5TR capacity compressor of AC plant all as specified and directed. (Shed no. 4,5,6,21)

Taking down UNSV liquid line filter and S&F liquid line filter as per existing make and specification and suitable size to fixing with existing refrigerant line for 10/15TR capacity compressor of AC plant all as specified and directed. (Shed no. 53)

Supply and fixing in replacement of LP/HP Cut out MP-15 all as specified and directed.(Make-Danfoss/infoss)

Supply and fixing in replacement LP cut out MP-1 all as specified and directed.(Make-Danfoss/infoss)

Supply and fixing in replacement HP cut out MP-5 all as specified and directed.(Make-Danfoss/infoss)

Supply and fixing in replacement Oil pressure cut out MP-55 all as specified and directed.(Make-Danfoss/infoss)

Supply and filling of new compressor oil No - 68 suitable for AC Compressor of Make : Castrol / Servo /HP

Supply and Fix in repairs of angle Valve, brass 1/4" complete all as directed.

Supply and fix in repairs Shut Off valve brass 1/4" bore complete

Supply & Fix in repairs of condenser safety valve, brass 0 to 350 PSI sealed of any size confirming to ISI including evacuation of refrigeration gas and recharging of taken out gas all as directed by Engineer-in-charge. Make - Castle/Henry/Brassomatic

Supply and filling of new compressor oil polyster lubricant grade 160-SZ suitable for Scroll compressor of Make - Danfoss, /Emcorf (or) Equivalent

Repair & relaying of Electrical interlocking wiring of LT panel of AC plant including all connected lux, cable, fuzes, complete all as specified and directed . NOTES :- (i) The cost of minor spares required including connector, lux, wire/cable, fuses required is deemed to be included in the quoted rate. (ii) Spares incorporated during repair of the electric panel will be measured separately under relevant item.

Push Button

KP-15 cutout Make:- Dafoss/Indfoss

Loading unloading coil

Contactor ML-2 as per existing Make: L&T , Legrand

Timer 3-30Sec/12-120 Sec. (L&T, Selec)

Relay 17.5-22 Amp Make -L&T Semans, Legrand

ALV D-2 single phase preventer Make :L&T/Minilec

MCB TPN 63 Amps, 10 KA Make -Siemens, Legrand, Hagger(L&T)

MCB SP 32Amps, 10 KA Make -Siemens Legrand, Hagger(L&T)

Relay, MN-2 6 - 10 Amps Make -Siemens Legrand, L&T

Relay, 11-18 (max-35) Amps Make -L&T, Siemens , Legrand

Relay, MN-2 9-15 Amps Make -L&T, Siemens , Legrand

Digital type Ammeter 3 phase & CT coil (Make- Conzerv/Selec/ AE)

ON/OFF switch Make -As per sample

Digital type Voltmeter 3 phase (Make- Conzerv/Selec/ AE )

Indicator (R-Y-B ), 15mm dia, Neon type Make- As per sample

MCCB 63 Amp 3Pole 10KA Model DU-100/DY 125U Make:- L&T

ADD BLOCK MNX-A1 suitable for existing contactor .

CT Coil 50/5

S & F PVC insulated multi stranded copper cable size 1.5 sqmm 2 core with 15 mm PVC flexible pipe including disconnecting and refixing of compressor/panel terminal connection complete.

Supply and fixing Heating element threded type capacity 3KW as per sample (each row 3 heaters) proper fixing in heater box with opening , closing system of heater box complete all as specified and directed .

Supply and fixing Heating element threded type capacity 6KW as per sample (each row 3 heaters) proper fixing in heater box with opening , closing system of heater box complete all as specified and directed .

S&F in repairs dry & wet bulb thermometer mercury filled and graduated on tube including removing existing unserviceable thermometer all as directed. Make : USHA/ Dimple

S & F PVC insulated Industrial type stranded copper cable size 6 sqmm 3Core make havells, polycab, anchor or Equv

Material and labour for charging N2 or Nitrogen Gas in 2 x 35 TR working capacity with 1 x 35 TR standby AC plant maintaining pressure 350 Psi for checking of Gas leakage and removing water vapour choked in line, flushing out the complete system including gas leakage and detection with halide torch/ soap foam solution in system including gas welding flushing and making good the pipe line to make the system leak proof complete all as specified and as directed. (shed No 22)

Ditto but for capacity 2 x 15 TR working with 1 x 15 TR standby. (Shed no. 12,13)

Ditto but for capacity 2 x 10 TR working with 1 x 10 TR standby. (Shed no. 53)

Ditto but for capacity 2 x 12 TR working with 1 x 12 TR standby. (Shed no. 54)

Ditto but for capacity 2 x 12 TR working with 1 x 12 TR standby. (Shed no. 4,5,6,21)

Material and labour for vacumising the plant by using vaccum pump upto (-) 30 PSIG pressure and hold the same under vaccum pressure upto 24 hours including necessary welding and bracing if required complete all as specified and directed for 20TR to 70 TR AC Plant.

supply and charging refrigerant gas R-22 in returnable cylinder Make:- Mafron/Freon.

Supply and charging refrigerant gas R-407c in returnable cylinder. Make - Mafron/Refron/Floron.

Supply and fixing, & commisioning in replacement of exisiting condensor pumps having capacity of 5 HP rating, 3 phase, 50 Hz, including taking down of old U/S pumps complete all as specified and directed. Make - Kirloskar, CG.

Supply and fixing, & commisioning in replacement of exisiting hot water monoblock seal type having capacity of 2 HP rating, 3 phase, 50 Hz, including taking down of old U/S pumps complete all as specified and directed. Make - Kirloskar, CG.

Supply and fixing, & commisioning in replacement of exisiting chiller monoblock seal type having capacity of 3HP rating, 3 phase, 50 Hz, including taking down of old U/S pumps complete all as specified and directed. Make - Kirloskar, CG.

Supply and install in repairs including testing water cooled hermatically sealed scroll compressor of capacity 11/12 TR, suitable for 407C gas three phase, UL electrical ratings 460 V3 - 60 Hz and 380-400 V3 - 50 Hz with thermally protected system including taking down old U/S compressor of Make - Danfoss and Model No. SM 18554RC,Copland or equivelant complete all as specified and directed. (Shed no. 22,54)

Supply and install in repairs including testing Air cooled hermatically sealed scroll compressor of 8.5 TR capacity for 407C gas, three phase, UL electrical ratings 460V3 - 60 Hz and 380-400 V3 - 50 Hz with thermally protected system including taking down old U/S compressor of Make Voltas/Blue Star complete all as specified and directed. (Shed no. 4,5,6,21) Make - Danfoss/Compland or equivalent.

S&F Pilot solenoid coil 3 way complete all as specified and directed. Make : As per sample

S & F in replacement mono block pump set of cap 0.37 kw (0.5 hp), 560 LPH, 9 mtr head single phase, 240 volts suitable for humidifier system including taking down old U/S mono block pump complete all as specified and directed by Engr-in- Charge. Make :- Vguard/Lubi/Kirloskar

S & F in repair chiller motor /hot water motor shaft seal assembly as per sample complete all as specified and as directed.

Supply and fix copper fuse links of temperature rating 74°C for fire damper for supply air ducting including taking down old U/S fuse links Make :- complete all as specified and directed by E-in-Charge.

Supply and fix brass liquid valve of size 1/2" incl cutting, brazing and testing complete all as specfied and directed by Engr-in-Charge. Make - Brassomatic or equivalent.

S&F as in repair Fan Belt Size A-76 as per sample complete all as specified and directed.

S&F as in repair Fan Belt Size B-72 as per sample complete all as specified and directed.

S&F as in repair Fan Belt Size B-80 as per sample all as specified and directed.

S&F as in repair Fan Belt Size B-70 as per sample complete all as specified and directed.

S&F as in repair Fan Belt Size B-117/118 as per sample complete all as specified and directed.

S&F as in repair Fan Belt Size B-74 as per sample complete all as specified and directed.

Charges for attending break down of AC plant of 20 TR to 70 TR capacity for any type of 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 complete all as specified and as directed.

M&L for spray painting to central AC Plants of following capacity comprising of compressor, Motor frame & foundation, condenser all connected pipe lines in stranded colour code AHU unit panels boards & cooling tower etc with two coat of heat resistance paint of approved grade and shade including lettering and numbering after carrying out necessary preparation of surface by emery paper of plant capacity 34 TR capacity With 17TR stand by all as specified and directed by EIC.(Shed No. 4,5,6,21)

Material and labour for Dismantling the cooling tower of capacity 3x35 TR central AC plant installed at Shed no. 22 and draining out complete water, cleaning honey comb fins by caustic soda and wire brush including cleaning the cooling tower tank and removed all algae from the basin, removing sediments from the all around cooling tower and GI pipes complete with replacement of 50mm float valve complete all as specified and directed by Engr-In-charge. Note: The time between first and second cleaning shall be six month minimum.(Shed no .22)

Supply & Fixing as in repair Air filter for 10000 CFM AHU unit for type Air conditioning plant micron type complete all as specified and directed. (Shed no.54) Make: Ravi, Airomatik or equivalent.

Supply & Fixing as in repair Air filter for 12000 CFM AHU unit for type Air conditioning plant micron type complete all as specified and directed. (Shed no. 12,13) Make: Ravi, Airomatik or equivalent.

Supply & Fixing as in repair Air filter for 14000 CFM AHU unit for type Air conditioning plant micron type complete all as specified and directed. (Shed no. 4,6,21) Make: Ravi, Airomatik or equivalent.

Supply & Fixing as in repair Air filter for 13000 CFM AHU unit for type Air conditioning plant micron type complete all as specified and directed. (Shed no. 05) Make: Ravi, Airomatik or equivalent.

Blank

Taking down old unsv fins/cells of cooling tower and supply and fix PVC fins(honey comb) suitable for fiber glass cooling tower complete suitable size of 24" x 12" x 6" for upto 70TR of AC plant as specified and dirtected

S&F MNX25 type power Contactor, 3 pole, 415 V, 50Hz, with auxulary Contact 2 NO+2NC suitable for Non-Inductive or Slightly Inductive ,Resistive Load (AC1- 40 Amps rating with the existing complete all as specified.

S&F MNX40 type power Contactor, 3 pole, 415 V, 50Hz, with auxulary Contact 2 NO+2NC suitable for Non-Inductive or Slightly Inductive ,Resistive Load (AC1- 40 Amps rating with the existing complete all as specified.

S&F MNX70 type power Contactor, 3 pole, 415 V, 50Hz, with auxulary Contact 2 NO+2NC suitable for Non-Inductive or Slightly Inductive ,Resistive Load (AC1- 40 Amps rating with the existing complete all as specified.

Supply & fixing as in repairs MCCB 3 pole 100 Amps with breaking capacity 18 KA DU100 /DY100 complete all as specified & directed.

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

Supply and fixing in replacement of Oil pressure gauge 100mm dia, range 0 to 200 Psi complete all as specified or as directed. Make: Fiebig/ Guru/ York

S & F in Replacement of water pressure gauges with adoptor (circular type) 100 mm dia with brass adoptor 15 mm 0-150 Kg/CM2 inlet only complete all as specified and directed.

S & F in Replacement of water pressure gauges with adoptor (circular type) 100 mm dia with brass adoptor 15 mm 0-500 Kg/CM2 inlet only complete all as specified and directed.

S & F in Replacement of temperature gauge circular type 100 mm dia with brass adoptor 15 mm inlet only with temp range 0 to 100 degree centigrade complete all as specified and directed.

S & F in Replacement of temperature gauge circular type 100 mm dia with brass adoptor 15 mm inlet only with temp range 0 to 50 degree centigrade complete all as specified and directed.

M& for Cleaning and Servicing quarterly of nozzles & heater of cooling tower of central AC plants of any capacity, as and when required or directed by the Engineer in charge.

Supply and fixing as in repairs expansion brass valve as per existing suitable for 35 TR capacity compressor in site including cutting brazing and testing with complete accessories complete all as specified and as directed.(Shed no. 22). Make: Denfoss, Emerson or equivalent.

Supply and fixing as in repairs expansion brass valve as per existing suitable for 15 TR capacity compressor in site with nut bolt complete accessories complete all as specified and as directed.(Shed no. 12,13)

Removing of all fine/alpha/hepa filters of AHU from their positions and laying out the filters at site for refixing after cleaning them including cleaning of AHU cooling coil using chemical with water jet/ brass brush in-order to remove all type of sludge/dust precipitated on the coil and filter without any damage to the copper cooling coil and then washing the cooling coil with fresh water and then air blowing the same to the complete satisfaction of Engr-in-Charge. Cooling coil drain water line shall be clean, if any type of obstacle is there in the flow of water, all to the complete satisfaction of Engr-in-Charge.

Supply and fixing as in repairs expansion brass valve as per existing suitable for 12 TR capacity compressor in site with complete including cutting brazing and testing accessories complete all as specified and as directed.(Shed no. 54) Make: Denfoss, Emerson or equivalent.

Supply and fixing as in repairs expansion brass valve as per existing suitable for 8.5 TR capacity compressor in site with complete accessories complete all as specified and as directed.(Shed no. 4,5,6,21) Make: Denfoss, Emerson or equivalent.

Disconnecting, dismantling and removing central shaft of air handling units of central AC plants of any capacity and any make for repair, transporting to the work shop, opening up for repairs carry out the repairs, of shaft including re-metalling, turning, brazing and polishing work of AHU shaft of any size, cleaning, greasing and overhauling incld replacement of unserviceable/worn out ball bearing and other minor spares, reassembling after repairs, bringing back to its location fixing in original position, connecting instt, and testing on full load capacity and commissioning to the entire satisfaction of Engr in charge. Note : Unit rate quoted by tenderers shall deem to incl for nuts, bolts, washers , lugs, thimbles, wires and petty items required for efficient and smooth functioning of the equipment without any extra cost to the Deptt.

S & F in replacement of hot water circulating coil made of copper size 24" x 48" (approx.) including necessary addition alteration in pipe line, duct or AHU with required all accessories all as specified and directed by Engr-in- Charge.

S & F 13mm Nitrile rubbber insulation class O suitable for Capacity 8.5TR unit suction & Discharge copper tube of size 1 1/8" & 5/8" complete

S&F in repairs spherical insert bearing Model no SA 208 or equivalent Make : FAB/SKF/ NRB/NTN

Note:- The amount against the Schedule of Credit mentioned in the tender document shall be deducted from the total amount quoted against Sch 'A' while deriving the Contract Sum for Acceptance.

Flint India

M/s Vinod Yadav