8124/SAR-T-49/2024-25 REPAIR AND MAINT OF AIR CONDITIONING AND REFRIGERATION SYSTEM AT AF STATION SARSAWA UNDER GE (AF) SARSAWA

Amount

Periodical servicing/maintenance of floor mounted Air Handling Unit (AHU) of capacity 8338 CFM by carrying following works :- (i) Removal of air filters (primary & secondary) from filter section, removal of dirt/dust partical by compressed air blower followed by washing under running tap water and refixing at site after complete dry . (ii) Removal of dirt/dust particals from aluminium fins of cooling coil by soft brushing followed by air blowing and cleaning of cooling coil by forced spray chemically (such as veni clean solution) all as directed by Engineer-in-Charge. (iii) Cleaning & removing of complete scale from bottom tray and drain pipe of AHUs as directed at site by the Engineer-in-Charge. (iv) Cleaning of drain pipe from AHUs tray to out side plant room manually as well as any de-scaling solution for draining. (v) Checking serviceability/tightening of fan motor V-belt, pulley block, fan blades assembly. (vi) Checking serviceability/tightening of AHU door lache and greasing/oiling.

All as per item srl no. 1 here in before but for floor mounted AHU of capacity 6043 CFM

All as per item srl no. 1 here in before but for floor mounted AHU of capacity 4738 CFM

All as per item srl no. 1 here in before but for celing suspended AHU of capacity 4200 CFM

Supply & fix in replacement washable synthetic non vowen type pre air filter having efficiency 90% down to 10 Micron of size :- 610 x 610 x 50 mm (Make: Llyod/Mihir/Danfoss/Indfoss)

All as per item srl No. 6 here in before but 610 x 305 x 50 mm

Supply & fix in replacement box type bag filter of class MERV-13 washable :- 610 x 610 x 50 mm. (Make: Llyod/Mihir/Danfoss/Indfoss)

All as per item srl no. 7 here in before but 610 x 305 x 50 mm

Supply and fix in replacement of fan belt (Model No A 1509 LP/A 58) for AHU blower motor Make : Fenner/Polyplus/Dunlop.

Supply and fix in replacement mecury in glass filled industrial thermometer 100mm dia SS of temp range 0-50 deg centigrade complete with syphon and isolating valve. Make : Fiebig/H. Guru/Emerald

Supply and fix in replacement industrial type pressure gauge 100 mm dia SS of dual pressure range PSI & Kg/Sqcm (0-150PSI & 0-10.6Kg/Sqcm) complete with syphon and isolating valve. Make : Fiebig/H. Guru/Emerald

Supply and fix in replacement of water flow switch having pressure rating 150 PSI, temp rating 100 deg centigrade, switching current rating 15Amp, 250V suitable for 25mm thread mounting.Make : Honeywell/Rapid Cool/Danfoss

Supply and fix in replacement hermetic type liquid line filter drier having MAP/MWP : 667 psig/46 bar Make : Honeywell/Rapid Cool/Danfoss

M&L for leakage detection in refrigeration line ckt of scroll chiller, plugging the same, nitrogen pressure testing, vacummizing and testing and commissioning complete

M&L for charging of refrigerant gas 407C complete all as directed by Engr-in-Charge. Make :Floron/Mrfron/DuPont/MPCL

M&L for charging of refrigerant gas 410 complete all as directed by Engr-in-Charge Make :Floron/Mrfron/DuPont/MPCL

M&L for charging of refrigerant gas R22 complete all as directed by Engr-in-Charge Make :Floron/Mrfron/DuPont/MPCL

Supply and fix in replacement scroll compressor Model No. SZ185S4RC suitable for water cooled chiller unit , Make : Danfoss/equivalent

M&L for De-Scaling of 13 TR condenser cells & tubes unit by chemical circulation, rodding with wire brush to remove deposited scale in condenser including replacement of end plate gasket complete all as directed by Engineer-in-charge.

Supply and fix in replacement anti freeze thermostat in chiller line of adjustable range -30 to +15 deg C complete with stainless steel capillary tube of 2m long with bolted connector, IP44. Make :- Sporlon/Danfoss/Alco/Indfoss/Carel.

M&L for periodical servicing/maint of electric driven mono block pump set of rating 10HP comprising of :- (i) Removal of pump set from condenser line and foundation. (ii) Dismantling of motor end covers and taking out stator unit (iii) Removal of carbon/dust particals from motor stator winding by air blower followed by its chemical washing and varnishing complete as directed by Engineer-in-Charge. (iv) Greasing of bearings. (v) Checking & tightening of pump impeller. (vi) Re-fixing of pump set in position and making all connections and testing complete.

All as per item srl no. 21 here in before but chiller pump set of capacity 7.5HP

All as per item srl no.21 here in before but CT fan motor of capacity 5 HP

All as per item srl no. 21 here in before but blower motor of floor mounted AHU of capacity 5 HP

All as per item srl no. 21 here in before but blower motor of celing suspended AHU of capacity 2 HP

M&L for rewinding of squarell cage induction motor 3-phase, 415V, 2900 RPM, 10 HP with supper enamelled copper wire as per original gauge and pattern including removal, refixing, to & fro transportation, electrical connection at site and testing complete all as directed by Enginee-in-Charge.

All as per item srl no. 26 here-in-before but of capacitity 7.5HP

All as per item srl no. 26 here-in-before but of capacitity 5HP

All as per item srl no. 26 here-in-before but of capacitity 2 HP

Supply and fix in replacement cooling tower fan blade assembly 1500mm dia with 4 nos FRP blades and 01 no aluminium hub sitable for weldon make 125TR cooling tower.

Supply only cooling tower fan motor squirrel cage ,TEFC, IP-55, 3-phase, 415V, 50Hz, 960 RPM, 5 HP direct driven, extended shaft, flange mounted. Make : Oswal/Siemens/Swing

Supply and fix in replacement 125 TR Weldon make cooling tower fan motor FRP canopy with stands

Supply and fix in replacement PVC fillings of size 600x300x150mm suitable for Weldon make 125TR cooling tower Note for item srl no. 30 to 33 : Items to be procurred from OEM of cooling tower only

M&L for removal of old unserviceable aluminium cable 3 core 16Sqmm

Supply, laying and testing of XLPE insulated PVC innersheathed GI wire armoured, heavy duty electric cable with copper conductor ,1100 volts grade cross sectional area 10 Sqmm, 3 core as per IS 7098(Part-1) 1988 amended up to date, laid on wall/celing/floor with appropriate GI clamps / fixing arrangement with termination with copper lugs as per standard practice.

Supply, laying and testing in replacement XLPE insulated PVC innersheathed GI wire/strip armoured, heavy duty electric cable with stranded aluminium conductor ,1100 volts grade cross sectional area 50 Sqmm, 3.5 core as per IS 7098(Part-1) 1988 amended up to date, laid on wall/celing/floor with appropriate GI clamps / fixing arrangement with termination with aluminium lugs as per standard practice.

Supply, laying and testing in replacement XLPE insulated PVC innersheathed GI wire/strip armoured, heavy duty electric cable with stranded aluminium conductor ,1100 volts grade cross sectional area 16 Sqmm, 4 core as per IS 7098(Part-1) 1988 amended up to date, laid on wall/celing/floor with appropriate GI clamps / fixing arrangement with termination with aluminium lugs as per standard practice.

Supply, laying and testing in replacement XLPE insulated PVC innersheathed GI wire/strip armoured, heavy duty electric cable with stranded aluminium conductor ,1100 volts grade cross sectional area 25 Sqmm, 4 core as per IS 7098(Part-1) 1988 amended up to date, laid on wall/celing/floor with appropriate GI clamps / fixing arrangement with termination with aluminium lugs as per standard practice.

Supply & fix in replacement cable PVC insulated unsheathed with stranded copper conductor of 06 Sqmm single core, green colour, FRLH, 1100 V grade as per IS 694, laid on wall/celing/floor with appropriate GI clamps / fixing arrangement with termination with copper lugs as per standard practice.

Supply and fix in replacement single phase preventer 415 V AC, 50 Hz with tripping provision on reverse phase,phase failiure, over/under voltage. Make : Minilec/Bentex/BCH

Supply and fix in replacement non skid synthetic rubber insulated mat 2mm thick for voltage upto 3.3 KV for electrical pupose as per IS 15652-2006 of size 2mx1m. Make : Vardhman/Jyoti/Safe Volt

Supply and fix in replacement digital energy meter dial size 96x96mm panel mounted with input 3P 3W/4W, 415V L-L, 1A/5A, 50 Hz, class 1.0, impulse const 4000 imp/KWh as per model no. RISH EM 1320 of make Rishabh or equivalent in HPL/Neptune

S& F replacement of MCCB , 4 Pole,200 Amp,25 KA,415 Volt, 50 Hz, Adjustable thermal magnetic Protection unit all as specified and directed.

S& F replacement of MCCB , 4 Pole,125 Amp,25 KA,415 Volt, 50 Hz, Adjustable thermal magnetic Protection unit all as specified and directed. Make Legragd/Havells/C&S

S& F replacement of MCCB , 4 Pole,63 Amp 16 KA,415 Volt, 50 Hz, Adjustable thermal magnetic Protection unit all as specified and directed. Make Legragd/Havells/C&S

M& L for Earthing in replacement complete with GI earth plate electrode 600 mm x 600mm x 6 mm thick burried directly in ground vertically to a depth not less than 2.25 Mtr below ground level with the top edge of earth plate at depth not less than 1.5 Mtr below ground level connected to galvanised iron earth strip 32 X 6 mm by means of bolts, washers ,watering pipe 20mm dia, medium grade GI pipe,with welded funnel and wire mesh and 40mm dia medium grade GI pipe with fitting as protection pipe for strip from plate electrode to test point /plant/machineries etc. including concrete pit in PCC (1:3:6) type C-I having outer dimension 60cmx60cmx60cm and internal dimension 30cmx30cmx30cm, pre-caste RCC 1:2:4 type B-1 cover slab of size 350x350x50mm reinforced with 8mm dia deformed bares @15 cm centre to centre both direction and 10 mm dia MS handle of suitable size charcoal or coke and salt in alternative layers,necessary earth work in soft/loose soil all as shown in electrical plate No 3 of MES Schedule Part I and testing complete all as specified and as directed.

S & F in replacement 32mm x 6 mm GI strip earth continuity conductor or main earthing lead fixed to wall on wooden gutties or recess or chases or burried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing complete all as specified.

S & F in replacement 4.00 mm dia GI wire as earth continuity conductor or main earthing lead fixed to wall on wooden gutties or recess or chases or burried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing complete all as specified.

S& F in replacement of 100mm dia Butter Fly valves (Manualy operated) with CI Body, stainless steel disc, nitrile rubber seal & O ring,PN-16 Pressure rating for chilled water circulation.Make : Zoloto/Bir/Advance

S& F in replacement of 80mm dia Butter Fly valves (Manualy operated) with CI Body, stainless steel disc, nitrile rubber seal & O ring,PN-16 Pressure rating for chilled water circulation.Make : Zoloto/Bir/Advance

S& F in replacement of 50mm dia Butter Fly valves (Manualy operated) with CI Body, stainless steel disc, nitrile rubber seal & O ring,PN-16 Pressure rating for chilled water circulation.Make : Zoloto/Bir/Advance

Supply and fix in replacement Y-strainer CI body with SS strainer for water circuit complete with all fittings, jointing materials etc suitable for 100 mm dia. Make : Zoloto/Bir/Emrerald

Supply and fix in replacement Pot -strainer CI body with SS strainer for water circuit complete with all fittings, jointing materials etc suitable for 100 mm dia. Make : Zoloto/Bir/Emrerald

Supply and fix in replacement gun metal gate valve for water circuit complete with all fittings, jointing materials etc suitable for 20 mm dia. Make : Zoloto/Bir/Emrerald

Supply and fix in replacement gun metal gate valve for water circuit complete with all fittings, jointing materials etc suitable for 25 mm dia. Make : Zoloto/Bir/Emrerald

Supply, assembly and erection in replacement of aluminium sheet rectangular/square duct made out of 'L' shaped hollow profile, duly factory boxed, incl all accessoried such as corner, Cleat. Carriage bolt, Gasket and appropriate sealat on longutudinal joints etc complete of size 26 Guage all as specified and directed by Engr-in-charge.

Supply and replacement of copper tubing 1/4 " (as per sample) at installation all as directed by Engr-in-charge.

Supply and replacement of brass flow nuts 1/4 " to 5/8 " (as per sample) all as specified and directed.

S&F aluminium powder coated bird screen with front side lovers and back side jali for free flow air and tripping big size mosquitto and particles comple all as specified and directed.

Supply & fix in replacement Electronic starting circuit relay circuit for 8.75 TR compressor (As per sample) complete all as specified and as directed. complete all as specified and directed by Engr-in-Charge. Make Blue star/equivalent as replaced

Supply & fix in replacement sealed unit compressor of cap 5.5 TR suitable for package type AC complete all as specified and as directed by Emgr-in-Charge.Note : Repaired and repainted compressor not accepted only gnuine compressor are accepted. with test report and year warranty certificate from OEM. Make :Voltas / equivalent as replaced

Supply & fix in replacement sealed unit compressor of cap 4.5 TR suitable for package type AC complete all as specified and directed by Engr-in-Charge.Note : Repaired and repainted compressor not accepted only gnuine compressor are accepted. with test report and year warranty certificate from OEM. Make Blue star /equivalent as replaced

M&L for replacement of compressor oil suitable for danfoss make scroll chillers

S&F in replacement ball bearing 6205 Make : SKF/NBC/TATA

S&F in replacement ball bearing 6203 Make : SKF/NBC/TATA

S&F in replacement terminal plate suitable for 10HP/7.5 HP motor

M&L for remetalling of bearing housing in 5HP to 10 HP rating motor end cover with machineble welding rod lathe work to make size as per inner dia of bearing and polishing complete all as directed by Eng-in-Charge

M&L for remetalling of bearing seat on shaft of 5HP to 10 HP rating motor with machineble welding rod lathe work to make size as per inner dia of bearing and polishing complete all as directed by Eng-in-Charge

Supply and fix in replacement Contactor kit for ML – 1.5.

Supply and fix in replacement Contactor kit for ML – 2.0

Supply and fix in replacement contactor coil for ML-1.5 .

Supply and fix in replacement contactor coil for ML-2.0

Supply and fix in replacement Contractor 3pole short circuit 5 KA RMS, SYM,600V Max, Maxfuse 125A/CB 125A, 60/75 C Cu-wire only Torque-45

M&L for thermal insulation caoting on HVAC duct/pipe line by using starbond chemical UV,water and abration resistanant as per following method: Apply a tack coat of starbond , imbed glass cloth smoothly into the wet coating, apply two finish coat of starbond in such away that 2nd coat is applied only after Ist coat is fully cured.

Mild steel for MS work confirming to Fe-410-O or Fe-310-O as in hanges, supports chaneel, clamps etc including nuts, bolts and washers welding, bending cold or hot drilling holes for bolts in any shape or size all as directed including two coats of syntheic enamel paint over a coating of red oxide primer.

S&F in replacement Direct-on-Line (DOL) starter suitable for Three Phase, 415 Volts, 3 HP centrifugal pump set and connection by using lugs/thimbles complete all as specified and as directed.

Supply and fixing non return valve (NRV) of size 100mm bore, cast iron body, as per IS 5312 (ISI marked), heavy duty, class 'PN-1.6', gun metal seat, both ends flanged and drilled, including nuts, bolts, washer and neoprene rubber gasket joint complete all as specified and as directed including dismantling & taking out old unserviceable non return valve of 50mm bore

M&L for repair to LT Panel Indoor type by disconnecting all electric connections, removal of complete internal wiring and replacing the internal wiring with & including new, PVC insulated stranded copper conductor FRLS cables of existing size but not less than 6 sqmm with proper copper lugs, thimbles, minor extras and replacing other unserviceable accessories to make the panel fully functional complete all as directed. Note: Accessories except wiring/lugs/thimbles/minor extras directed to be replaced shall be measured and paid separately under respective items.

Supply and fixing in replacement MCB, SPN, 32 Amps, 240 Volts, AC supply, with overlaod and short circuit protection, 'C' curve and rupturing capacity 10 kA complete all as specified and as directed.

Supply and fixing in replacement MCB, SPN, 40 Amps, 240 Volts, AC supply, with overlaod and short circuit protection, 'C' curve and rupturing capacity 10 kA complete all as specified and as directed.

Supply and fixing in replacement MCB, Three Pole, 40 Amps, 415 Volts, AC supply, with overlaod and short circuit protection, 'C' curve and rupturing capacity 10 kA complete all as specified and as directed.

Supply and fixing in replacement MCB, 4 Pole, 63 Amps, 415 Volts, AC supply, with overlaod and short circuit protection, 'C' curve and rupturing capacity 10 kA complete all as specified and as directed.

M&L welding work in repair including cleaning and preparing the surfaces to be welded together, holding the members in true position while welding and bevelling of edges, as required, in the case of metal nexc 6mm thick as specified by Engineer-in-Charge. Taking down the article and refixing in position after welding shall be measured in the quoted rate.

Supplying, fixing, jointing and testing, ISI marked, heavy grade, class C, MS pipe, conforming to IS: 1239-1982, including fittings such as coupling, bends, elbow and tee screwed/flanged joints, nuts&bolts, rubber packing rings, fixed on wall, hanged with ceiling through clamps, hangers, brackets, pipe supports, etc, as per the site requirement in long/short pieces for the following sizes all as specified 150 mm dia

All as per item srl no. 84 here in before but100 mm dia

All as per item srl no. 84 here in before but 80 mm dia

All as per item srl no. 84 here in before but 65mm dia

ISHWAR ELECTRICALS AND PROCESS SERVICES (BID ID -3083672)

VATANUCOOL ENGINEERS (BID ID -3079042)

M/s badrinath Traders (BID ID -3095071)

SINGH CONSTRUCTION CO. (BID ID -3086720)