REPAIR MAINTENANCE OF CENTRAL AC PLANTS OF CAP 3 X 30 TR AT NBC LAB 3 X 11 TR AT LOGISTIC SECTION 2X25 TR AT ARD 3 ETH 2X24 TR AT ERG 3 ETH 2X7.5 TR AT RECOIL SECTION AND 2X7.5 TR AT FVGCE IN 505 ABW UNDER GE (U) PM DELHI CANTT-10

Amount

M&L for de-scaling condensers of central AC Plant of capacity 3 x 30 TR at NBC Lab, 505 ABW, by opening side plate, flushing the condenser tubes, using de-scaling soluation of suitable gravity, rodding the condenser tubes carefully removing all the deposited materials completely and raising the soluation through condenser tubes till clear water starts to come out from the condenser as complete including re-fixing the side plates by replacing gasket and testing complete for satisfactory working complete all as specified and directed by the Engr-in-Charge.

diitto- all as per item no 1.00 above but Capacity of AC Plant 2 x 25 TR at ARD 3 ETH, 505 ABW.

diitto- all as per item no 1.00 above but Capacity of AC Plant 2 x 24 TR at ERG 3 ETH, 505 ABW.

M&L for servicing condensers of Package type AC Plant of capacity 3 x 11 TR( 2 Nos condensers per unit) at Logistic section, 505 ABW by scraping/ removing the deposit materials from condenser coil using vamuklin 2RA, clean solution and cleaning condenser coil by pressurized water using pump through blower, detection of leakage, repair of damaged condencing coil tubes with necessary welding/ brazing and lubricating the all bearings, checking motor foundation, nuts, bolts, washers, etc. and replacing the same if required and testing complete for satisfactory working complete all as specified and directed by the Engr-in-Charge.

-diitto- all as per item no 4 above but Capacity of AC Plant 2x7.5 TR at 505 ABW.

Supply only in replacement rubber insulating mat class A type, chequered, size 2 Mtr x 1 mtr x 25 mm thickness, for working voltage 3.3 KV complete all as specified and as directed. Make : Jyoti /Dunlop or Equivalent

Supply and fixing in repair Drier Cores filter for chiller unit of package type AC plant of Cap. 2X 7.5 TR (Make:- Denfoss/Indfoss/ Emersoh)

Supply and fixing in repair Drier Cores filter for chiller unit of central AC plant of Cap 15 to 30 TR (Make:- Denfoss/Indfoss/Emerson)

S&F in replacement moulded case circuit breakers(MCCB) 400 Amps, adjustible type, 4 Pole, 36 kA, thermal magnetic with rotary handle and spreader compete all as specified and directed by Engr-in-Charge. (Make:- L&T/ ABB/Legrand)

S&F in replacement moulded case circuit breakers(MCCB) 250 Amps, adjustible type, 4 Pole, 36 kA, thermal magnetic with rotary handle and spreader compete all as specified and directed by Engr-in-Charge. (Make:- L&T/ ABB/Legrand)

S&F in replacement moulded case circuit breakers(MCCB) 160 Amps, adjustible type, 4 Pole, 36 kA, thermal magnetic with rotary handle and spreader compete all as specified and directed by Engr-in-Charge. (Make:- L&T/ ABB/Legrand)

S&F in replacement moulded case circuit breakers(MCCB) 100 Amps, adjustible type, 4 Pole, 36 kA, thermal magnetic with rotary handle and spreader compete all as specified and directed by Engr-in-Charge. (Make:- L&T/ ABB/Legrand)

S&F in replacement miniature circuit breaker (MCB) 63 Amps, TPN , 10 KA complete all as specified and directed by Engr-in-Charge. (Make:- L&T or equivalent in ABB/Legrand)

S&F in replacement miniature circuit breaker (MCB) 32 Amps, TPN , 10 KA complete all as specified and directed by Engr-in-Charge. (Make:- L&T/ ABB/Legrand)

S&F in replacement miniature circuit breaker (MCB) 25 Amps, TP , 10 KA complete all as specified and directed by Engr-in-Charge. (Make:- L&T/ ABB/Legrand)

S&F in replacement 'C' curve miniature circuit breaker (MCB) 5-32 Amps, single pole (SP), 10 KA complete all as specified and directed by Engr-in-Charge. (Make:- L&T/ ABB/Legrand)

S&F in repair overload relay 3.5-5 amps,complete all as specified and directed by Engr-in-Charge. (Make:- L&T/ABB/Legrand)

S&F in repair overload relay 6.7-9.7 amps,complete all as specified and directed by Engr-in-Charge. (Make:- L&T/ABB/Legrand)

S&F in repair overload relay 17-25.5 amps,complete all as specified and directed by Engr-in-Charge. (Make:- L&T /ABB/Legrand)

S&F in repair overload relay 40-57 amps,complete all as specified and directed by Engr-in-Charge. (Make:- L&T/ ABB/Legrand)

S&F in replacement power contactor, 9 Amps triple pole (TP), AC 3 duty, with add on block, complete all as specified and directed by Engr-in-Charge. (Make:- L&T/ ABB/Legrand)

S&F in replacement power contactor, 12 Amps triple pole (TP), AC 3 duty, with add on block, complete all as specified and directed by Engr-in-Charge. (Make:- L&T/ ABB/Legrand)

S&F in replacement power contactor, 18 Amps triple pole (TP), AC 3 duty, with add on block, complete all as specified and directed by Engr-in-Charge. (Make:- L&T/ ABB/Legrand)

S&F in replacement power contactor, 40 Amps triple pole (TP), AC 3 duty, with add on block, complete all as specified and directed by Engr-in-Charge. (Make:- L&T/ABB/Legrand)

S&F in replacement power contactor, 50 Amps triple pole (TP), AC 3 duty, with add on block, complete all as specified and directed by Engr-in-Charge. (Make:- L&T/ ABB/Legrand)

Supply and fixing in replacement Star Delta starters for motors of 20 HP capacity with suitable rating relay, suitable for mounting on existing LT Panels of AC plants and connections with suitable size single core copper conductor wire complete all as specified and directed by Engr-in-Charge. (Make -L&T/Siemens/Legrand/ ABB/Crompton.)

Supply and fixing in replacement Star Delta starters for motors of 12.5 HP capacity with suitable rating relay, suitable for mounting on existing LT Panels of AC plants and connections with suitable size single core copper conductor wire complete all as specified and directed by Engr-in-Charge. (Make -L&T/Siemens/Legrand/ ABB/Crompton.)

Supply and fixing in replacement DOL starters for motors of 5/7.5 HP capacity with suitable rating relay, suitable for mounting on existing LT Panels of AC plants and connections with suitable size single core copper conductor wire complete all as specified and directed by Engr-in-Charge. (Make -L&T/Siemens/Legrand/ ABB/Crompton.)

Supply and fixing in replacement DOL starters for motors of 3 HP capacity with suitable rating relay, suitable for mounting on existing LT Panels of AC plants and connections with suitable size single core copper conductor wire complete all as specified and directed by Engr-in-Charge. (Make -L&T/Siemens/Legrand/ ABB/Crompton.)

S&F in replacement Phase on/off/trip indication lights of suitable colour and push on/off push button, 240V AC suitable for mounting on LT panel, complete all as specified and directed by Engr-in-Charge. (Make:- ESBEE)

Supply and fixing in repair humidity self priming motor pump set of cap 0.5 HP single phase 240 volt complete all as specified and directed by Engineer-in-Charge. (Make:- Usha/ M/s Seetal /HP/Amcrate )

Material and labour 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.

M& L for taking down/ removing unserviceable plaster along with glass wool and GI wire mesh and material and labour for glass wool and wrapped with GI wire mesh and rendering 15 mm thick in Cement Mortar (1:4) over newly provided glass wool and wire mesh of 100 mm dia pipe complete all as directed by Engr-in-Charge.

M& L for taking down/ removing unserviceable plaster along with glass wool and GI wire mesh and material and labour for glass wool and wrapped with GI wire mesh and rendering 15 mm thick in Cement Mortar (1:4) over newly provided glass wool and wire mesh of 80 mm dia pipe complete all as directed by Engr-in-Charge.

Material and labour for Overhauling and repairing of any size refrigerant suction/ delivery liquid line valve including servicing of valve, replacement of packing material, sealing rings, Teflon washers and testing complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing in repairs thermostat for AHU room, as per existing size & specification complete all as specified and as directed. (Make:-SIEMENS/ DANFOSS/ INDFOSS/ANERGY).

Supply and topping up of refrigerant Gas R - 22/407 (Make:- Mefron or equivalent ISI approved as directed by Engr-in-Charge). Freon, Floron

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 motor of capacity 10/7.5 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.

Disconnecting from mains/taking out existing unserviceable/defective motor of capacity 3/5 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.

Disconnecting from mains/taking out existing unserviceable/defective Monoblock Pump set of capacity 3/5 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 Monoblock Pump set of capacity 7.5 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 of electrical connection from panal board and Taking out electric motor pump of capacity 40 HP from the base plate of pump set after opening the nut bolts and transporting the motor to workshop and after repairing the motor, re-installing & testing complete all as specified and as directed.

Supply and fixing in repairs 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. 46 above but size 600mm x 300mm x 50mm.

ditto- all as per item No. 46 above but size 300mm x 300mm x 50mm.

Overhauling, testing and commisioning of semi sealed reciprocatingcompressor unit of package type AC plant of Cap. 2 X 7.5 TR Model No. 06D-018, Make-Voltas of capacity 7.5 TR. Overhauling including disconnecting/ dismantling of suction and discharge valves, side covers other control accessories, Shifting the faulty compressor parts to the contractors workshop for certain required repairs including stator rewinding, grinding, polishing etc. Refixing the repaired/Replaced parts in its original position under supervision of site-in-charge all as specified and directed by the Engineer-in-Charge. Note:- (i) Required Spare parts to be replaced during overhaluing shall be measured and paid seperatly as 'Supply only' under relevent items. (ii) Transportation charge & labour charges for taking down old spares and fixing of new spares shall deemed to be included in quoted rate.

Supply only the follwing spare parts for the compressor model No. 06D-018, Make-Voltas.

Pistons

Connecting rod

Pin and bush

Main bush

Suction and discharge reed

Piston Ring set

Gasket set

Oil pump assembly

M&L for Dismantling old/Unserviceable/rusted ,Supply/Return/Fresh Air GI Duct of any size/shape/dia with insulation from walls, roofs, ceiling for replacement complete including Ducting Supports , rubber gaskets, elbows, vanes, & supports etc. from central AC plants, complete all as specified and directed by engineer-in-chrage.

Supply, assemble and errection of ducting, made up of GI Sheets of 0.8mm (22 guage) thickness as in Air Condition Ducting including fabrication for required size, patch work, fixing on walls, roofs or ceiling or in existing iron frame work including all accessories such as Corner, Cleat, Carriage bolt, Gasket, lap joint, welding, reverting and appropriate sealant on longitudinal joints etc. complete all as specified and as directed by Engr-in-charge. (Make:- TATA/ JINDAL/ SAIL)

M&L for Supply and installation of thermal insulation material 25 mm thick for non-exposed Ducts with closed cell class o nitrile rubber elastomeric insulation of density 40-60 Kg/m3 thermal conductivity of 0.033-0.038 W/mk and µ>=7000 (k-flex st) to be applied on ducts using manufacturers recommended rubber based adhesive as per the approved specification the material should be from global approved & UL approved for new ducts as required at site complete all as specified and directed by engineer-in-charge. (Make:- KFLEX/ARMAFLEX/PARAMOUNT)

M&L for Supply and installation in replacement of 50mm thick resin bonded fibre glass wool roll of density 24 kg/Cum, with factory laminated aluminium vapour barrier insulation in existing ducts of AC plants, applying rubber based adhesive CPRX compound including wraping, pasting complete and cover the insulation one side with GI wire Mess netting after cleaning the duct surface (to be insulated ) by scrapping carefully with wire brush etc. to make the surface completely free of millscale, dirt, dust, grease and other foreign materials, sealing of all longitudinal joints and circular overlaps with and including Aluminium foil tape 50 mm wide, to make the insulation leakproof against any leakage and securing the insulation with and including mechanically fastened nylon/ steel straps of size 12 mm/50 mm at maximum intervals of 1.2 mtr, including taking down old unserviceable one, complete all as directed by Engr-in-Charge. (Make:- Shri Fire Pack/ Impex Insulation/ Trans Insulation).

M&L for Dismantling old/Unserviceable/rusted Supply/Return Air Diffuser/Dampers/side Grilles/VCD , of any size, type, shape from any location at Central AC Plants, complete all as specified and directed by engineer-in-charge.

M&L for Supply, fixing of powder coated extruded aluminum rectangular diffusers of required sizes with black anodized extruded aluminum volume control damper, nuts, bolts, screws etc.complete all as specified and directed by engineer-in-charge.

M&L for Supply, fixing of powder coated extruded aluminum rectangular diffusers of required sizes without volume control damper, along with nuts, bolts, screws etc.complete all as specified and directed by engineer-in-charge.

Supply & Fixing of powder coated extruded aluminum supply & return grills complete with fixing accessories like nuts, bolts, screws etc. complete all as specified and directed by engineer-in-charge. (Make : Mapro/brightflow/ Ravistar)

M&L for taking out old MS pipes and Supplying & laying , testing & commissioning mild steel (Heavy) 'C' class pipe of size 32 mm dia on exposed surface / underground (in trenches) including welding works, connections with existing chiller/condenser water line, chiller/condenser 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. 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 (Make:- JINDAL/TATA/PRAKASH SURYA)

ditto- all as per item No. 59 above but of size 40 mm dia

ditto- all as per item No. 59 above but of size 50 mm dia

ditto- all as per item No. 59 above but of size 80 mm dia

ditto- all as per item No. 59 above but of size 100 mm dia

M&L for Taking out old corroded GI water tubing of 40/50 mm dia.

ditto- all as per item No. 64 above but 25 mm dia.

Supply and laid complete with all fittings in trenches/exposed surface, GI Tubing 'Medium grade' of dia 50 mm. (Make:- JINDAL/TATA/PRAKASH SURYA)

ditto- all as per item No. 66 above but 40 mm dia.

ditto- all as per item No. 66 above but 25 mm dia.

Supply and fixing in repairs cast iron butterfly valves lever operated SS disc type nitrile/EPDM rubber lining PN 16 of dia 150 mm complete all as specified and directed by the Engr-in-Charge. (Make: - AUDCO/ LEADER/ZOLOTO).

ditto- all as per item No. 69 above but 100 mm dia.

ditto- all as per item No. 69 above but 80 mm dia.

ditto- all as per item No. 69 above but 65 mm dia.

ditto- all as per item No. 69 above but 50 mm dia.

Supply and fixing in repairs cast iron Y strainer flanged ends with SS perforated sheet screen of size 100 mm complete all as specified and directed by the Engr-in-Charge. (Make: - ADVANCE/ AUDCO/ LEADER/CASTLE/ NVR/ ZOLOTO).

ditto- all as per item No. 74 above but 80 mm dia.

Supply and fixing in repairs cast iron non return valves of dia 100 mm pressure class PN 16 including nuts, bolts, washers, gaskets, etc for Central type AC plants complete all as specifed and directed by Engineer-in-Charge. (Make: - ADVANCE/ AUDCO/ LEADER/CASTLE/ NVR/ ZOLOTO).

ditto- all as per item No. 76 above but 80 mm dia.

ditto- all as per item No. 76 above but 65 mm dia.

ditto- all as per item No. 76 above but 50 mm dia.

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 by Engr-In-charge.

Supply & fixing HRFR PVC insulated single core copper conductor cable of size 2.5 sqmm for connections in LT Panels including copper thimbles including taking down old unserviceable one complete all as specified and directed by Engineer-in-Charge. (Make:- RR KABEL./ FINOLEX/ POLYCAB/ KEI INDUSTRIES LTD./ HAVELLS.)

Supply & fixing HRFR PVC insulated single core copper conductor cable of size 6 sqmm for connections in LT Panels including copper thimbles including taking down old unserviceable one complete all as specified and directed by Engineer-in-Charge. (Make:- RR KABEL./ FINOLEX/ POLYCAB/ KEI INDUSTRIES LTD./ HAVELLS.)

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 10 Sqmm, 4 core with galvanized steel strip or wire including taking down old unserviceable one complete all as specified and directed by Engineer-in-charge. (Make:- RR KABEL./ FINOLEX/ POLYCAB/ KEI INDUSTRIES LTD./ HAVELLS.)

`ditto- all as per item No. 83 above but cross sectional area 16 Sqmm, 4 core.

`ditto- all as per item No. 83 above but cross sectional area 25 Sqmm, 4 core.

`ditto- all as per item No. 83 above but cross sectional area 35 Sqmm, 4 core.

`ditto- all as per item No. 83 above but cross sectional area 50 Sqmm, 4 core.

Supply and fixing digital type Voltage protection device (VPD),440 V suitable for 30 TR AC plant including taking down old unserviceable one complete all as specified and directed by Engineer-in-Charge.

Supply and fixing digital type motor protection device (MPD),30-220 amps suitable for 30 TR AC plant including taking down old unserviceable one complete all as specified and directed by Engineer-in-Charge.

Supply & fixing in repairs aluminium lugs for cable of cross sectional area 6 Sqmm to 50 Sqmm complete all as specified and directed by Engineer-in-charge.

Supply & fixing in repairs copper lugs for cable of cross sectional area 6 Sqmm to 35 Sqmm complete all as specified and directed by Engineer-in-charge.

Supply and fixing in replacement chiller sensor suitable for Bluestar chiller unit Model no. XWCS2026AR2 of 25 TR ,complete all as specified and as directed.

Supply and fixing in replacement Intelligent microprocessor controller for Bluestar chiller unit Model no. XWCS2026AR2 of 25 TR capacity having Digital setting of temperature levels, Built-in time delay, Auto distribution of load, BMS compatibility, in-built, anti-freeze protection system, Self diagnostics/ fault detection, and Auto-restart feature, along with complete internal wiring with connecting accessories like cable, wires, terminals etc., all as specified and as directed.

Supply and fixing in replacement Intelligent microprocessor control panel for Voltas chiller unit having open type reciprocating compressors of capacity 30 TR having auto, semi auto and manual mode options with Digital display for setting of parameters having diagonostic capabilities, microcomputer motor protection device (μ - MPD) and microcomputer voltage protection device (μ - VPD), pressure and temperature transducers for safety, Built-in time delay, Auto distribution of load, BMS compatibility, in-built, anti-freeze protection system, and Auto-restart feature, along with complete internal wiring with connecting accessories like cable, wires, terminals etc., all as specified and as directed.

Supply and fixing in repairs gun metal ball valves with iron wheel head, screwed both ends for iron pipe, ISI Marked, as per IS:778 of size 25 mm bore complete all as specified and directed. (Make:- KIRLOSKAR/ LEADER/ ZOLOTO)

ditto- all as per item No. 95 above but 20 mm dia.

ditto- all as per item No. 95 above but 15 mm dia.

Supply and fixing in repairs Immersion heaters of cap 5 KW 230/440 volts as required (Make:- Dasspass/crown/Theata)

Supply and fixing in repairs strip heater heaters of cap 2/3 KW 230/440 volts as required (Make:- Dasspass/crown/Theata)

S&F expansion valve suitable for 25 TR & 30 TR AC Plant including cutting, welding, brazing, replacement of new gasket, nut bolt, washer etc all as specified & directed by Engineer-in-Charge, (Make-Sporlon/ Danfoss) Note :- Before disconnecting the existing expansion valve from the system the refrigerant has to be pump down or taken in empty cylinder by help of ICE etc.

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

S&F in replacement of compound gauges of the chiller and condenser lines of range 0 - 100Psi. Including syphon and fitting complete all as specified and directed. (Make:- Fiebig/H guru/AE)

Material and labour for servicing of ceiling mounted and floor mounted AHU unit of 1500 CFM to 17000CFM capacity including cleaning of bottom tray and painting inside the tray with one coat of marine anti-corrosive paint over a coat of red oxide primer, cleaning of cooling coil and filters complete with high pressure detergent solution without damaging cooling coils and ceiling, checking aligning and tightening of blower fan, greasing of all movable parts, replacement of worn out bolts, nuts shaft keys etc complete all as specified and as directed.

Supply and fixing in repair fan belt of size B-43,A-58,A-50.A- 34 to A-41 (Make:- Fenner/Dunlop/ Polly)

Supply & fix in repairs fan belt of size B 73 to B-76,B 82,B 92, (Make:- Fenner/Dunlop/Polly)

Supply and fixing in repairs of PVC fins size 600x300x150 for Cooling Tower, Complete all as specified & directed. (Make:- as per sample)

Supply and fixing in repairs of PVC eleminators size 600x300x150 for Cooling Tower, Complete all as specified & directed. (Make:- as per sample)

Supply and fixing in repair H.P/L.P cutout type MP15 as specified and as directed. (Make:- Danfoss/ Indfos/ Wika)

Supply and fixing in repair oil pressure failure switch type MP55 as specified and as directed. (Make:- Danfoss/ Indfos/ Wika)

M &L for dismantling the old broken fan hub assembly including blades for cooling tower 70/75 TR 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 & washersetc.,complete all as specified and directed by Engineer-in-Charge.

ditto- all as per item no. 110 above but for 30/50TR cooling tower

Supply and fixing in repairs of PVC branch pipe of (set of 4 Nos.) including PVC flaps clamps etc complete all as specified and directed by Engineer-in-Charge.

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.

M&L for replacing the compressor oil N-68 of compressor including draining and disposing the old compressor oil. (Make : HPCL (Seetal)/ HP (Seetal)/ Servo)

M&L for preparation of surfaces of Central AC Plant of capacity 2x 24/25 TR , trap door, condensers,chillers,compresors, Induction motors, pumps, hot water boiler, C channels, all pipe lines, valves and outer body of cooling towers, Shuters, iron windows and AHU's with different colors following the color code system as directed by the site-in-charge.Job includes removing the old paint by rubbing, brushing and applying one coat of red oxide zinc chrome primer and two coats of Synthetic Enamel Paint (1st grade quality) complete all as specified and as directed.

diitto- all as per item No. 116 above but Capacity of AC Plant 3x 30 TR

diitto- all as per item No. 116 above but Capacity of Package type AC Plant 3x 11 TR

diitto- all as per item No. 116 above but Capacity of AC Plant 2x 7.5 TR

M & L preparation of surface by removing old paint by scraping with scrap paper/ sand paper and applying two coat of synthetic enamel paint on all MS pipe lines , all sluice valves & NRV , all Pumping sets with base, including shutters, iron windows,cooling tower complete all as specified and as directed.

Taking down existing water storage tank and S&F rotational moulded polyethylene multilayer water storage tank of capacity 1000 litre (cylindrical vertical with closed top) hoisted and fixed in position on existing wall, stage, roof or RCC staging including complete connection of inlet and out let pipe, tank nipple, float valve etc. fixing of GI pipe (over flow) & washout pipe to the nearest rain water drain complete all as specified and as directed.

Disconnecting from mains/taking out existing unserviceable/defective Cooling tower motor of capacity 20 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 the centrifugal pump and repairing the same by replacing unserviceable spare parts including lath work etc and re-assembling the same in original position of 40 HP pump having discharge 25 LPS at 65 Mtr head complete all as specified and as directed. (Note:- Spare parts required for repaired shall be measured and paid separately under relevant item of this schedule)

Supply only in replacement following spare for pumps of capacity 40 HP, complete all as specified and as directed Make-Kirloskar or equivalent

CI Impellor

CI casing wearing ring DEN/ ND.

CI Split glands.

Ball bearing SKF 6306/6307.

Bearing Cap.

Key for impeller steel.

Impeller nut (steel).

Remetalling welding & turning of pump shaft.

Stuffing box bush.

Gland packing

Trey coupling

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 .

Dismantling the defective FRP cooling tower gear box of Cap 220/230 TR of Make- Paharpur, and Overhauling the same by replacing defective broken/unserviceable spare parts taper/ ball bearings, any type gears, main shaft kharad work, keys, nut bolt etc and including gear oil, greasing , servicing, cleaning and assembling, testing & comminssioning for satisfactory performance complete all as specified & as directed.

Supply only gear oil suitable for gear box of Cap 220/230 TR cooling tower

Disconnecting from mains/taking out existing unserviceable/defective 3 Phase squirrel cage induction motor of capacity 1.5/2 H.P for Ducting cooler 6000CFM 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.

M&L for Supply, installation, testing and commissioning in replacement of flexible fire retardant canvas connector cloth suitable for Ducting cooler , AHUs including removing of old one complete all as specified and directed by Engineer-in-charge.

Disconnecting from mains/taking out existing unserviceable/defective DIDW centrifugal fan blower of 3 Phase motor of capacity 1.5/2 H.P for Ducting cooler 6000CFM including disconnecting all electrical connections removing from foundation transporting to repair workshopand repair/ replacement of fan blower, , worn out nuts, bolts washers, balancing , lath work, , gaskets, greasing, servicing, shaft bearings etc and positioning the fan blower set and connecting up in existing position and testing complete all as specified and as directed by Engineer-in-Charge.

M&L in replacement PTMT float valve with EPOXY coated Aluminum rod and HD Ball suitable for 15/20mm bore pipe complete all as specified and directed.

Taking down existing water storage tank and S&F rotational moulded polyethylene multilayer water storage tank of capacity 2000 litre (cylindrical vertical with closed top) hoisted and fixed in position on existing wall, stage, roof or RCC staging including complete connection of inlet and out let pipe, tank nipple, float valve etc. fixing of GI pipe (over flow) & washout pipe to the nearest rain water drain complete all as specified and as directed. Make sintex/rotex/supreme

Disconnecting the defective FRP cooling tower of Cap 220/230 TR of cooling minimum 270cum/hr of water from 42 degree C to 32 degree C with bulb temperature Make- Paharpur, and repair and cleaning the same by replacing defective broken/unserviceable spare parts including repair to minor leakages & assembling, tesing & comminssioning for satisfactory performance complete all as specified & as directed. Note:- (i) Required Spare parts shall be measured and paid seperatly as 'Supply only' under relevent items. (ii) Labour charges for taking down old spares and fixing of new spares shall deemed to be included in unit quoted rate.

Supply only of following spare parts for FRP cooling tower complete all as specified & as directed:-

MS branch pipe set o as per existing length and dia

PVC fill Pack complete

spary nozzle

Nut Bolt any size

Cooling sprinkler tray

FRP Compound Note for item No 135.01 to 135.06- (i) Labour charges of item Nos. 135.01 to 135.06 are deemed to be included in the quoted rate in item Nos. 134 here-in-before.

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.

DP Traders (BID ID -3443540)

SNOWY ENGINEERING INC (BID ID -3451046)

sheetal engineering (BID ID -3444658)

SANJEEV ENTERPRISES (BID ID -3444055)

Flint India (BID ID -3444909)