REPAIR MAINTENANCE OF COOLING TOWER AND CONNECTED WORK UNDER GE(U) PM DELHI CANTT 10

Dismantling of existing worn out electric motor of CT Fan of cooling tower and S&F in repair with testing and commissioning totally enclosed weather proof IP-55, Flange Mounted Extended Shaft electric CT Fan Motor with following specification complete all as specified and as directed:- three phase squirrel cage motor, Capacity 3 HP, 960 RPM, 415V, 50HZ with all connected accessories and all fitting suitable for 70 TR cooling tower complete all as specified and as directed.

Dismantling of existing corrosion proof PVC fill from the induced draft type cooling tower of fibre glass reinforced plastic (FRP) casting rectangular/other type construction for Cooling tower of 70 TR capacity complete with all accessories and supply and fixing new corrosion proof both edge folded PVC fill and inlet louvers, drift , eliminators hot water distribution pipes and nozzles etc complete all as specified and as directed: - Make:Delta/Polo/ Paharpur/Weldon/Delta (a) The spray system should be work satisfactory even with 50% reduced flow of water. (b)The induced draught cooling tower should be operate according to the counter flow principle. (c)cooling tower specification for PVC filling Size 600X 300X 150 MM both edge folded

Dismantling of existing damaged CT Fan and S&F in repair CT Fan complete section Fan, Fan Dia-1200 mm 06 Blades connected GI nut bolts and acessories all fitting suitable for 70 TR cooling tower complete all as specified and as directed.(Make : Mihir/Polo/ Paharpur/Weldon/Delta)

S&F in repair / Replacement of worn out Rectangular / Square type shape and FRP induced draft type counter flow cooling tower body, casting by fibre glass reinforced ,casing & basin(FRP), over all dimension (LxWxH )-1850 mm x 1850 mm x 3000 mm, suitable for 70 TR cooling tower, complete as per manufacturer's design/specifications with all fittings complete all as specified and as directed. Make: Mihir/Polo/ Paharpur /Weldon/Delta

Repair / Replacement of Rectangular / Square type shape and FRP induced draft type counter flow, cooling tower Fan Guard, Motor Frame and all Metallic Supports by new MSHDG type mechanical equipment supports, electroplated hardware, drain connections, suitable GI inspection ladder, steel supporting structure, anti vibration mounting etc, suitable for 70 TR cooling tower, complete as per manufacturer's design/specifications with all fittings complete all as specified and as directed. Make: Mihir/Polo/ Paharpur/Weldon/Delta. Note:-(Ref. item No. 1.00 to 5.00) 1. The cooling tower shall be assembled and fitted in presence of company represenative and shall be tested as per company specifications. 2. Any spares required for assembling the cooling tower like nuts, bolts , rivets, gaskets, etc shall be provided by the contractor and rates of the same are included in n quoted rate. 3. Rate quoted by the contractor shall be incusive new foundation of cooling tower complete pcc, brick work, cement work etc as per OEM recommendation with also dismentling of cooling tower & old foundation complete all as specified and directed

Material and Labour for frame work with angle iron for frame support, with fabrication, welding joining including cutting tops to shape as directed, drilling holes, notching for wire, etc.; flat iron fillets (for securing wire mesh etc.) including all necessary drilling, bolting or riveting, etc., and similar work conforming to Fe-290 Gde E-165 including taking down old unserviceable one complete all as specified and as directed.

Supply and fixing in replacement cast iron NRV flenged ends with SS perforated sheet screen of following size complete all as specified and as directed. (Make: - ADVANCE/ AUDCO/ LEADER/CASTLE/ NVR/ ZOLOTO).

250 mm dia

200 mm dia.

125 mm dia

100 mm dia

80 mm dia

Supply and fixing in replacement cast iron butter fly valves lever operated SS disc type nitrile/EPDM rubber lining PN 16 of following size dia complete all as specified and as directed. (Make: - ADVANCE/ AUDCO/ LEADER/CASTLE/ NVR/ ZOLOTO).

250 mm dia.

200 mm dia.

150 mm dia.

125 mm dia

100 mm dia.

80 mm dia.

65 mm dia.

50 mm dia

Supply and fixing in replacement cast iron Y strainer flanged ends with SS perforated sheet screen of following size complete all as specified and as directed. (Make: - ADVANCE/ AUDCO/ LEADER/CASTLE/ NVR/ ZOLOTO).

250 mm dia.

200 mm dia.

150 mm dia.

100 mm dia.

80 mm dia.

M&L for cutting of existing MS/GI water mains of size 80- 150 mm dia of chiller/condensor/cooling towers & GI pipes of make-up tanks of central AC plant at different points/section for replacement with new MS pipe in short lengths including MS fittings complete all as specified and as directed.

M&L for cutting of existing MS/GI water mains of size 150 to 300 mm dia of chiller/condensor/cooling towers & GI pipes of make-up tanks of central AC plant at different points/section for replacement with new MS pipe in short lengths including MS fittings complete all as specified and as directed.

Taking out old unserviceable MS pipes and Supplying & laying , commissioning & testing mild steel (Heavy) 'C' class pipe of size 50/65 mm dia on exposed surface / underground (in trenches) including welding works, connections with existing chilled water line, chiller, pump, fabrication of bends, MS flange, tees, reducers, shoe, support (brick masonry block & wooden support for underground / MS angle- clamp & wooden support for exposed surface) along with priming coat of steel primer as per standard specification complete all as specified and as directed. Make : TATA/ JINDAL/ PRAKASH/ SURYA Note:- (i) The rates quoted by the contractor shall deemed to include the cost of MS fittings required during laying of MS Pipes. (ii) The Pipes of sizes 150 mm & below shall be M.S. ‘C’ class as per IS : 1239 and pipes size above 150 mm shall be heavy class of thickness min. 7mm as per IS: 3589.

All as per item No. 12 here-in-before but of size 80 mm.

All as per item No. 12 here-in-before but of size 100 mm.

All as per item No. 12 here-in-before but of size 125 mm.

All as per item No. 12 here-in-before but of size 150 mm.

All as per item No. 12 here-in-before but of size 200 mm.

S&F in repair /replacement CHW TYPE coil with fins, 21.50 Sq.ft coil area, GI coil casing / blank offs, coil section with 4 row deep, copper tube material, 12.7 mm tube dia, 27 SWG/ 0.41 mm thickness of tube, 4 RD cooling coil and MS header matreial and 0.15 mm thick plain aluminium fins with No. of fins per inch is 11/12 for HW Suitable for existing AHU, copper tubing material of 12.7mm/ 1/2" O.D. Dia and thickness of tubing 27 SWG/ 0.41MM and fins dimension 1600mmX 1250mm , 50 (mm wg) static pressure and along with connected fixing brackets etc with complete as per specified& directed by Eng-in-Charge. (AHU coil :-AHRI certified as per test standard ARI-410 &UL certified for safety).AHU Make:- ZECO/BLUE STAR/VOLTAS

S&F in repair /replacement HW TYPE coil with fins, 16.50 Sq.ft coil area, GI coil casing / blank offs, coil section with 4 row deep, copper tube material, 12.7 mm tube dia, 27 SWG/ 0.41 mm thickness of tube, 4 RD cooling coil and MS header matreial and 0.15 mm thick plain aluminium fins with No. of fins per inch is 11/12 for CHW Suitable for existing AHU, copper tubing material of 12.7mm/ 1/2" O.D. Dia and thickness of tubing 27 SWG/ 0.41MM and fins dimension 1700mmX 900mm , 50 (mm wg) static pressure and along with connected fixing brackets etc with complete as per specified& directed by Eng-in-Charge. (AHU coil :-AHRI certified as per test standard ARI-410 &UL certified for safety).AHU Make:- ZECO/BLUE STAR/VOLTAS

S&F in repair /replacement CHW TYPE coil with fins, 17.90 Sq.ft coil area, GI coil casing / blank offs, coil section with 4 row deep, copper tube material, 12.7 mm tube dia, 27 SWG/ 0.41 mm thickness of tube, 4 RD Cooling coil and MS header matreial and 0.15 mm thick plain aluminium fins with No. of fins per inch is 8/10 for HW Suitable for existing AHU, copper tubing material of 12.7mm/ 1/2" O.D. Dia and thickness of tubing 27 SWG/ 0.41MM and fins dimension 1750mmX 950mm , 50 (mm wg) static pressure and along with connected fixing brackets etc with complete as per specified& directed by Eng-in-Charge. (AHU coil :-AHRI certified as per test standard ARI-410 &UL certified for safety).AHU Make:- ZECO/BLUE STAR/VOLTAS

Supply, fixing and testing in replacement of three pole power contactors of capacity 50 Amp including NO or NC auxiliary contact block, coil voltage 230 V ,control wiring, thimbles, etc and including taking down of old one complete all as specified and as directed. (Make -L&T/Siemens/ ABB/ C & S.)

Supply, fixing and testing in replacement of three pole power contactors of capacity 40 Amp including NO or NC auxiliary contact block, coil voltage 230 V ,control wiring, thimbles, etc and including taking down of old one complete all as specified and as directed. (Make -L&T/Siemens/ ABB/ C & S.)

Supply, fixing and testing in replacement of three pole power contactors of capacity 25 Amp including NO or NC auxiliary contact block, coil voltage 230 V ,control wiring, thimbles, etc and including taking down of old one complete all as specified and as directed. (Make -L&T/Siemens/ ABB/ C & S.)

Supply, fixing and testing in replacement of three pole power contactors of capacity 9 Amp including NO or NC auxiliary contact block, coil voltage 230 V ,control wiring, thimbles, etc and including taking down of old one complete all as specified and as directed. (Make -L&T/Siemens/ ABB/ C & S.)

M &L for dismantling the old broken fan hub assembly including blades of cooling tower and replacement with new fan hub assembly with die cast aluminium blades adjustible pitch axial fan heavy duty as per existing size including U-clamps, nuts, bolts & washers suitable for cooling tower of capacity 225 TR all as specified and directed by Engineer-in-Charge. Make:Mihir/Delta/Polo/Paharpur/Weldon

-ditto- all as per item No.20 above but capacity of cooling tower 125 TR

-ditto- all as per item No.20 above but capacity of cooling tower 50TR

M&L for dewatering and cleaning of underground sumps of 10000ltr to 25000ltr capacities with high pressure water jet to remove all masses, algae and dirt and removal of dirty water along with sludge using sludge machine and disposal of the same to a safe distance and including scrubbing of internal surfaces using industrial vacuum machine and applying of anti bacterial sterilization spray and apply one coat white wash to walls, floors and ceilings internal surfaces of reservoirs and UG sumps of the following capacity complete all as specified as directed .

Opening the electric induction motor of capacity 40 HP and taking out the unserviceable winding wire complete and cleaning the slots, rewinding the motor with super enamelled copper winding wire of gauge same as existing gauge including all other insulating material, (i.e. cotton tap, PVC tap, PVC sleeve glass pipe, varnish) complete all as specified and as directed.

Disconnecting from mains/taking out existing unserviceable/defective CT Fan motor set of capacity 2/3 H.P and repair/ replacement of bushings, worn out nuts, bolts washers, gaskets, gland etc and positioning the pump set and connecting up in existing position and testing complete all as specified and as directed by Engineer-in-Charge.

Disconnecting from mains/taking out existing unserviceable/defective CT Fan motor set of capacity 5 H.P and repair/ replacement of bushings, worn out nuts, bolts washers, gaskets, gland etc and positioning the pump set and connecting up in existing position and testing complete all as specified and as directed by Engineer-in-Charge.

Disconnecting from mains/taking out existing unserviceable/defective CT Fan motor of capacity 2/3 HP of any size, type, and make including disconnecting all electrical connections removing from foundation transporting to repair workshop disconnecting unserviceable burn out winding completely including insulating materials and rewinding of the complete stator with super enameled copper wire of existing size applying proper insulation ‘F’ class varnish drying in oven, assembling, transporting back to site, re-installating, testing and commissioning complete all as specified and as directed by Engineer-in-Charge.

Disconnecting from mains/taking out existing unserviceable/defective CT Fan motor of capacity 5 HP of any size, type, and make including disconnecting all electrical connections removing from foundation transporting to repair workshop disconnecting unserviceable burn out winding completely including insulating materials and rewinding of the complete stator with super enameled copper wire of existing size applying proper insulation ‘F’ class varnish drying in oven, assembling, transporting back to site, re-installating, testing and commissioning complete all as specified and as directed by Engineer-in-Charge.

Supply, laying and testing cable XLPE Insulated ,screened, PVC bedded, armoured, electric power cables (heavy duty) 1100 Volts grade with aluminium conductor of cross sectional area 25 Sqmm, 4 core with galvanized steel strip or wire including taking down old unserviceable one complete all as specified and as directed.Make:Havells/Polycab/KEI Industries

`-ditto- all as per item No. 27 above but cross sectional area 16 Sqmm, 4 core.

`-ditto- all as per item No. 27 above but cross sectional area 10 Sqmm, 4 core.

M & L for dismantling the old broken existing PVC tank and S&F in replacement 200 Litre capacity Rotational moulded polyethylene water storage tank, triple layered, food grain plastic (rectangular shape with closed top), hoisted and fixed in position on existing wall, stage, roof or RCC staging complete all as specified in SSR Part-I including supply and connecting tank nipple, float valve etc., making complete connection of inlet and out let pipe, fixing of GI pipe (over flow) & washout to the nearest rain water drain complete all as specified and as directed. Make:SINTEX/VECTUS/SUPREME

S&F in replacement humidity self priming motor pump set of cap 0.5 HP single phase 240 volt of AC plant, fitted with thermal overload protector & IP-44 protection, 'B' class of insulation, Both side ball bearing double shielded including necessary GI tubing connection for incoming / outgoing supply complete all as specified and as directed. Make:- ABB/CROMPTON/KIRLOSKAR

Supply and fixing in replacement of Pre filter 10 micron of size 600mm x 600x 50mm made of out of GI wire mesh interspaced with two crimp layers and three flat layers flanged deep box type and efficiency 90% as per existing size and pattern for the all three AC Plant air handling unit complete all as speicifed and directed by Engr-in-charge. (Make- Athlete or equivalent as approved by Accepting Officer.)

ditto- all as per item No. 30 above but size 600mm x 300mm x 50mm.

ditto- all as per item No. 30 above but size 300mm x 300mm x 50mm.

M & L for dismantling the old broken existing PVC tank and S&F in replacement 10000 Litre capacity Rotational moulded polyethylene water storage tank, triple layered, food grain plastic (cylindrical, vertical with closed top), hoisted and fixed in position on existing wall, stage, roof or RCC staging complete all as specified in SSR Part-I including supply and connecting tank nipple, float valve etc., making complete connection of inlet and out let pipe, fixing of GI pipe (over flow) & washout to the nearest rain water drain complete all as specified and as directed. Make- SINTEX/ROTEX/SUPREME

Material & Labour in replacement for earthing with galvanized steel earth plate electrode of size 60cmx60cm x6mm thick buried directly in ground (earth pit not less than 2.25m deep below the ground level) with top edge of the plate not less than 1.5m below normal ground level, connected to the galvanized earth lead by means of bolts, nuts check nuts and washers of galvanized iron strip 32x6mm as earth lead as shown in electrical plate No. 3 of SSR Part-I connected to earthing test point all as specified or indicated including testing on completion including GI strip up to 7.5mtr and necessary excavation and earth work in soft/loose soil, returning filling, disposal of surplus soil, earth pit in PCC 1:3:6 type C-1 using 20mm graded stone aggregate pit, funnel, 20mm dia GI medium grade watering pipe, 40 mm dia GI medium grade earth lead protection pipe and pre-cast earth pit cover 50mm thick made of RCC (1:1.5:3) type A1 duly reinforced with 8mm dia TMT bar @100mm c/c both ways, one lifting handle made out of 10mm dia TMT bar 250mm long embedded in cover slab and cover, wire, copper lugs etc mesh, charcoal and common salt in alternate layer of 15cm thick including taking down old unserviceable one complete all as specified and directed.

Supply and fixing in replacement of earth continuity conductor or main earthing lead (GI strip extension) of size 32 X 6mm fixed to plinth or buried in ground or drawn in GI pipe or any other situation as indicated for loop earthing etc complete all as specified and directed.

S&F in repair cable tray of size 150 x 50 mm and thickness 3.00 mm complete all as specified & directed.

ditto- same as item No 34 but of size 300 x 50 mm.

Taking out old corroded GI water tubing of 40/50 mm dia & S&F of the same complete all as specified & directed.

ditto- all as per item No.36 above but 25 mm dia.

ditto- all as per item No. 36 above but 20 mm dia.

ditto- all as per item No. 36 above but 15 mm dia.

Supply laying, connecting and testing GI water tubing 50 mm bore, medium grade, with all fittings, with screwed and socketed joints, laid in trenches/floor or fixed to wall or surface and making good the disturbed surface complete all as specified and as directed.

ditto- all as per item No. 37 above but 40 mm dia.

ditto- all as per item No. 37 above but 25 mm dia.

ditto- all as per item No. 37 above but 20 mm dia.

ditto- all as per item No. 37 above but 15 mm dia.

S & F in replacement Gun metal Ball valve suitable for 50 mm bore pipe complete all as specified and as directed. Make :- Zoloto/Kirloskar/Leader.

All as per Srl item No. 38 here-in-before but suitable for 40 mm bore pipe complete all as specified and as directed.

All as per Srl item No. 38 here-in-before but suitable for 25 mm bore pipe complete all as specified and as directed.

All as per Srl item No. 38 here-in-before but suitable for 20 mm bore pipe complete all as specified and as directed.

All as per Srl item No. 38 here-in-before but suitable for 15 mm bore pipe complete all as specified and as directed.

Supply and fixing in replacement of AHU Shaft bearing No. P-207/ P-208 or existing size as per site requirement complete all as specified and as directed.

M&L for 100 mm thick cement concrete type C-2, 1:3:6 ( 40 mm graded aggregate) including finishing surface of concrete topping even and fair ( without using extra cement), and finishing surface of concrete in floors including taking down complete all as specified & directed.

Taking down of cement plaster of any description, complete all as specified

M&L for rendering 15 mm thick in CM 1:4 on fair faces of brick work or concrete surface of walls finished fair and smooth without using extra cement complete all as specified

M & L for preparation of newly plastered surfaces of walls and applying two coats of cement base paint over one coat of alkali resistand primer complete all as specified.

Dismantling the existing old unserviceable Monoblock/ centrifugal Pump of any capacity and supply and fixing new monoblock pump set of 5.0 HP (3.7 KW) suction/delivery of size 100 mm x 80 mm CI casted, head 24.0 Mtrs, discharge, 8.30 LPS, Speed 2900RPM, Stainless steel impeller & pump shaft, mechanical seal, including 5.0 HP electric motor, copper wounded with 'B' class insulation & IP-55 protected, Cast Iron body, suitable for voltage range 300 to 440 Volts, ISI Marked, including making all electrical connections and testing for any leakage complete all as specified and as directed.

Major overhauling Material & Labour for dismantling of compressor of central AC plant complete with connected copper pipe line and loading unloading mechanism & pump down the existing refrigerant, disconnecting of electric motor of compressor, refrigerant line, gauges pipe and carrying out complete over hauling of compressor of capacity 30 TR, including replacement of its all major parts, crank shaft, piston, bushes, oil pumps, various size bearings , springs, slaves aluminium washer packing, screw, including all lath work, materials items for cleaning, cotton waste, compressor oil etc and changing of suction filter, oil filter, replacing the defective parts compete including refixing of all parts for the following operation complete all as specified & as directed: - (i) Supply and Charging of Nitrogen Gas in unit & complete system at more than 300 psi pressure and checking of any dropping of pressure / leakage up to 72 Hrs after replacement of compressor parts & rectification of leakage if any. (ii) Vaccuumisation of complete system for minimum 2 days for dropping of vacuum pressure & rectification of leakage, if any.

(iii) Supply & Charging of complete system with R - 22 gas for maintaining the system pressure up to as recommended by OEM. (iv) Measure the inlet and outdoor temperature of Chiller unit for performance checking and maintaining temperature as required at site all as specified & directed. (v) Testing & commissioning of compressor after completion of work. Notes:- Any minor items required for overhauling described here -in - after shall be supplied by the contractor without any extra cost to the department and the rates of the same shall deemed to be included in the quoted rates.

Supply and fixing in replacement LED street light fitting 45 Watt 230 V AC outdoor type with high pressure die cast aluminum housing and heat resistant complete with driver, lamp bracket with impact and corrosion resistant including thermal management in multiple optics complete with IP 65/66 protection complete all as specified and directed by Engr-in-Charge.

Supply and fixing in replacement of basic all purpose surface and wall mounted LED batten 20 Watt with polycarbonate housing & intigrated electronic driver with all necessary fixing accessories complete all as specified and as directed. (Make : Havells/phillips/bajaj)

Supply and fixing in replacement exhaust fan 450 mm sweep SP 230V , 50Hz,1400 RPM heavy duty MS body including louvre and making hole on wall and grouting the same including taking down unserviceable one complete all as specified and as directed. (Make: Havells/CG/Usha/Bajaj/Khaitan)

Supplying and fixing Fire Extinguisher Carbon dioxide (CO2) extinguishers consisting of welded M.S. cylindrical body, light weight squeeze lever discharge valve fitted with pressure indicating gauge with internal discharge tube, discharge nozzle suspension bracket of capacity 4.5 Kg as per IS: 2878 complete with holding accessories including taking down old unserviceable one complete all as specified & directed by Engineer-in-Charge.

ditto- all as per item No. 49 above but CO2 of capacity 6 Kg.

S&F in repair /replacement of temeperature Sensors of the chiller and condenser lines operates by mercury liquid of range 0-50⁰C all as specified and as directed (Make:Fiebig/H guru/AE)

S&F in repair/replacement of compound gauges of the chiller and condenser lines of range 0 - 150Psi. Including syphon and complete fitting all as specified and as directed (Make:Fiebig/H guru/AE)

Supply and fixing of Smart AHU Controller with suitable capacity(15000 CFM).Integration with temperature sensors, humidity sensors, differential pressure switches, damper actuators, and VFDs.Provision for control of supply fan, return fan, cooling coil valve, and fresh air/return air dampers.Configuration, programming, and graphics development as per system requirement.Testing, commissioning, and demonstration of complete operation through BMS interface.All wiring between controller, sensors, actuators, and panel as required for a complete working system.Necessary mounting accessories, power supply arrangements, terminations, and labeling & documentation required for complete & functional unit.

Supply, mounting, wiring, configuration, testing and commissioning of a 7-inch colour TFT capacitive touch display fully compatible with the existing Smart AHU controllers. The supply shall include all accessories, mounting hardware, interconnecting cables, power supply, termination, labeling and documentation required for a complete and functional unit.

Supply and fixing of Compressor Oil complete all as specified & directed (Make:- HPCL(Seetal)/ HP (Seetal)/ Servo.)