SPECIAL REPAIRS REPLACEMENT OF 02 NOS CENTRAL TYPE AC PLANTS AGAINST BER AT TP AREA AT INS KALINGA BHEEMUNIPATNAM

Amount

Dismantling of central type AC plant any type of capacitys upto 3x 90 TR water cooled AC Plant and comprising of following complete and loading transporting and handing over to the MES store yard and as directed by Engr-in -charge. Note :-i) Chiller units AC plant compressor, mounting frame with refrigeration piping and instrument panel complete. ii) condenser piping /Chiller piping with fitting fixture etc. iii) Ducting with grills and diffusers,dampers,supports. iv) Air handling unit complete v) cooling tower and connected accesories complete. vi) LT electrical panel board and cable.

CENTRAL AIR CONDITIONING WORKS INCLUDING DESIGN, SUPPLY, INSTALLATION, TESTING & COMMISSIONING [INCLUDING PHASE – I & PHASE – II PERFORMANCE TESTS]:

Design,Supply, installation,testing and commissioning of screw type Chiller Central Air Conditioning plant, water cooled with multi compressor, comprising of Hermetically sealed Compressors, Flooded type Evaporator, Shell and tube Condenser, suitable expansion device, suitable for operation on and nominal capacity of minimum 3x90 TR ( 2 Nos working at a time & 1 No Standby) comprising of the following :

[A]CHILLER PACKAGE UNIT:- Micro processor controlled screw chiller unit complete, factory assembled, factory tested, of minimum 90 TR x 3 Nos(one number as standby), minimum 180 TR nominal cooling capacity working on latest eco friendly (With no greenhouse effect) refrigerant (Green gas) comprising of screw compressors operated with green gas suitable for 415V, 50 Hz, 3 phase, piping controls & accessories, starter & microprocessor control panel, refrigerant, oil charged mounted on common base frame with anti vibration pads complete as per manufacturer's specifications as recommended by OEM: 03 Nos (Two nos working at a time and one stand by). [i] Efficiency of screw type chiller package shall comply with latest ECBC norms. [ii] The contractor shall submit catalogue indicating model No of unit offered and test certificate indicating power consumption at 25%, 50% 75% and 100% load for approval of GE before placing the final order. Power consumption at part load shall also be as per ECBC norms. [iii] The screw type chillers shall be accepted by GE based on test certificates. RCC foundation as per manufacturers standards shall be deemed to be included in the rate quoted. [B]CONDENSER WATER CIRCULATION SYSTEM: Comprising of the following:- [i] FRP induced draft cooling tower 1 No of 110% capacity of the plants (working capacity minimum 180 TR) complete with spray section, honey comb fill, basin, CT fan, TEFC Motor, intake bird screen and other accessories with out cut off arrangements at the time of low ambient conditions (Technical Specifications as per the manufacturer or OEM Recommendations) - 01 Job

[ii] Condenser of adequate capacity of above plant as per OEM recommendation (shell & tube type) consisting of copper tubes-03 Nos) Note:-Necessary water supply line and pit masonry for tapping water from the existing pipe line/tank shall be deemed to be included in the quoted rate. [iii] HDPE/PVC make up water tank of adequate capacity but not less than 5000 liters (02 Nos) installed on PCC/brick staging up to height as per manufacturer specifications for make up water requirement including brass float valve with polyethylene ball, over flow and drain arrangement, incoming connection of suitable bore GI pipe medium grade from tank to tapping point including necessary cutting of existing pipe line and tapping of branch connections with GI pipe of suitable bore medium grade all as directed (The item rate is inclusive of provisioning all connected inlet pipe lines from existing sources and all outlet pipes - 01 Job [iv] Energy efficient mono block type 3 phase electric driven pump sets of adequate capacity working on 415V AC for re-circulation of condenser water of 50% plant capacity-03 Nos (02 Nos working and 1 No standby) & FASD starter for re-circulation of condenser water with ribbed rubber vibration isolation pads two nos mounted on ISMC frame (painted with anti corrosive primer & paint) on PCC foundation complete all as specified or as recommended by OEM. - 01 Job [v] Condenser water piping of MS class 'B' medium grade (ISI marked), pipe and fitting of suitable size connected/jointed by electric arc continuous welding including two coats of anti corrosive paint over a coat of primer for interconnecting the cooling tower with condensers and pump, make up water tank, drain pipe, complete with Y strainer, NRV,pressure gauges and butterfly valves- 01 Job. Make of MS pipes will be approved by GE [vi] Non-chemical type on line scale preventer of required size as per the capacity of the condenser water pumping system including piping and control valve.

[a] Compressors : Semi hermetic screw compressors with minimum loading capacity 25%, operating voltage 360 - 440 Volts, 50 Hz, 3 Phase AC supply and working with refrigerant R- 410A / R - 407C / R - 134A. [b] Condenser Section : Shell and Tube type condenser internally knurled copper tubes [c] Expansion Valve : Electronic expansion valve should be capable enough to operate on wider temperature range with energy efficient improvement at part load conditions, as per manufacturer's specifications. [d] Evaporator : Flooded type evaporator all as per manufacturer's specifications. [e] Safety Protection : Safety protection on low cooling temperature, low oil pressure, high refrigerant pressure, electric leak, compressor overload, high/low voltage and single phasing shall be provided. Automatic control of refrigerant condition and compressor ON/OFF status and loading sequence system shall be provided. [f] Refrigerant : HFC - 134A / HFC - 410A / HFC - 407C of zero ozone depletion potential refrigeration circuits of total capacity as per manufacturer's specifications. [g] Control : Micro Processor control with LCD interface capable of monitoring all machine operating parameters like suction / discharge pressure Oil pressure, compressor operating hours, set point, air temperature, entering/ leaving water temperature etc complete and precisely manages the operation of compressors, expansion devices, fans and of the evaporator/ chiller water pump for optimum energy efficiency as per manufacturers specifications.

[C] CHILLED WATER CIRCULATION SYSTEM Comprising of the following:- [i] Chiller unit - 03 Nos [ii] Energy efficient mono block type 3 phase electric driven pump sets of adequate capacity working on 415V AC for re-circulation of chilled water of 50% plant capacity-03 Nos (02 Nos working and 1 No standby) including 100mm dia Pressure gauge on delivery side of pumps including rubber vibration isolation pads mounted on ISMC frame (painted with anti corrosive primer & paint) on PCC foundation including all connections complete all as specified. - 01 Job [iii] Chilled water piping with MS Medium Grade ERW pipe of suitable diameter including all wieldable fittings, butterfly valves NRVs & 'Y' strainers for interconnection between water chiller, chilled water pumps with AHUs and cooling coil units. Chilled water piping shall be insulated with 75mm thick EPS pipe section TF quality cladded with Aluminium sheet 26 SWG including water flow switch and electrically operated modulating / Three way mixing valve of required size with actuator & modulating thermostat control for each AHU - 1 No. [iv] PVC / HDPE Expansion tank of 2000 ltrs capacity including insulation with 75mm thick fibre glass/thermo coal/density of 24kg/cum finished with cement plaster including civil works and painting with 3 coats of cement based paint and GI medium grade piping connections and necessary piping control valves on inlet, outlet and wash out, float valve etc-01 Job.

[D] AIR TREATMENT SYSTEM : Comprising of the following:- [i] Double skin construction air handling unit suitable for chilled water system made out of extruded aluminium structural frame /aluminium corners and intermediate connecting pieces and panels of galvanised steel sheet of appropriate thickness as recommended by OEM on both sides with 25mm thick pressure injected PUF of appropriate density using CFC free blowing agent ,the panels having scratch free plastisol coating on outer side.The fan section should be mounted on anti vibration spring isolators and free from main structure.The fan should be back ward curved centrifugal fan with air discharge up blast, belt driven with TEFC induction motor of suitable capacity.The coil section consist of 6 row deep coil with min 12 fins/inch duly coated . The filter section consist of prefilter with 5 micron 90% efficiency .The other accessories are view port, limit switch, stainless steel (SS3) drain pan , volume control damper with Energy Efficient Motor(EE Series) of suitable capacity and specified makes, AHU shall be provided with UVC emitters & fixtures in sufficient quantity so as to provide equal distribution of UVC energy on the coil and in the drain pan all as specified or as recommended by OEM. [ii] Strip type Heater bank of suitable capacity in three banks with necessary copper conductor wiring for banking complete - 03 Sets [iii] Pan type humidifier comprising of stainless steel tank and pan necessary heater, wiring, water piping GI pipe medium grade 15mm bore including float valve and brass stop cock in inlet pipe. The make of GI pipe will be approved by GE [iv] Humidistats and Thermostats are to be provided in AHU room [v] Three way Mixing Valve of required size with motorised actuator and modulating thermostat control for AHU.

[vi] Accoustic Insulation with 25mm thick fibre glass rigid boards and finished with RP tissue paper and 28 mm gauge aluminium perforated sheet upto 5 mt from outlet of the air plenum including air plenum for all AHUs all as specified and directed. [vii] Under deck insulation for AHU rooms shall be provided with Fire retardant XPE closed cell of appropriate thickness as recommended by OEM metalised polyester film and self adhesive backings with protection peel off paper. [viii] Fresh air damper with GI bowl/ fittings and mosquito proof netting shall be provided for AHU. [E] AIR DISTRIBUTION SYSTEM:- Comprising of the following:- [i] Supply and return air ducting made out of commercial grade GI sheet Zinc coating 120 grade, IS : 277 and factory fabricated as per SMACNA - 1995 standards and as per IS-655 , required portion of duct shall be acoustically insulated with standard size of AC sheets, insulated with 25 mm thick resin bonded fibre glass wool of density 24 Kg /cum covered with factory laminated aluminium foil fixed with adhesive tape & finally cladded with 26 SWG aluminium sheet & supported by internal channel & clamping, wherever the ducting passes through un-conditioned space shall be insulated with 75 mm thick resin bonded fibre glass wool of density 24 Kg /cum and covered with GI chicken wire mesh and cladded with aluminium foil fixed with adhesive tape and finally cladded with 26 SWG aluminium sheet & supported by internal channel & clamping,wherever the ducting is exposed to sky shall be insulated with 75 mm thick resin bonded fibre glass wool of density 24 Kg /cum covered with polythene sheet faced hessian cloth, GI chicken wire mesh and cladded with sand cement plaster and supported by MS channel & clamps complete in all respect. Make : Sail/ Tata/Jindal

[iv] Control Wiring : Refrigeration control wiring with FRLS copper conductor, pvc insulated, unsheathed, multistranded ,1100V grade,singlecore of size 1.5 sqmm drawn in and including PVC conduit of suitable size for interlocking arrangement as per standard practice with thermostat, humidistat, balancing valve, blowermotor,pumps , starter etc., all as directed shall deemed to be included in the quoted rate. [v] Earthing: Earthing of electric equipments with galvanised steel earth plate electrode 600x600x6mm buried directly in ground earth pit not less than 2.25m deep below normal ground level, connecting to and including GI strip 32x6mm (up to the body of the equipment) by means of two GI bolts/nuts/washers. Earth plate shall be surrounded by packed layers of charcoal dust and common salt 15cm thick all around bottom and top and watering pipe 20mm dia projected 30cm above the GL with one socket and removable GI plug on top x 2.25 meters light grade perforated galvanised steel top with socket and plug and bottom connected to earth plate by slit and two bolts/nuts/washers. Earth strip shall be protected by 40mm bore GI light grade pipe to test point/equipment. The earth strip shall be tested after carefully completion as per IS specifications - 06 Jobs Note: Earth work, GI pipe as required is deemed to be included in the unit rate.

[G] Civil Work:- Comprising of Masonry foundation for chilling units, pumping sets, cooling tower and make up water tank and AHUs etc, by making opening in the brick wall and making good for ducts, pipes, cables and fresh air intake complete all as directed. This AC plant system is being installed in existing building which is being used for operation. This involves a lot of alteration/ modification in the building. All these modification will be deemed to be included in the quoted rate. The tenderer is advised to visit the site prior to quote the rate. The tendered will submit a detailed structural drawing for necessary support structure for supporting the duct from AC plant room to the building for the approval of accepting officer. The cost of this support structure is deemed to be included in the quoted rate. Notes: 1.All civil works required to install, test and commissioning the equipment like excavation , foundation for equipment , necessary cable ducts with MS covers 10mm thick duly painted, excavation for laying pipe etc & making good all disturbed/broken surfaces. and finishing patch work to match existing surface including fixing the ducting etc, shall be deemed to be included in the above offer. 2. Necessary water supply GI pipe connections of suitable size incl control valves for the Cooling towers / Expansion tank and A/C plant from existing water supply connection is deemed to be included in the quoted rate. 3. Suitable provision to connect condensate outlets from AHUs fan coil units to main drainage through HDPE/PVC / GI pipes shall deemed to be included in the rate quoted. 4. All three phase motors shall be provided independent single phasing preventer with phase reversal and over load protection including with electronic interlocking by various cut out pressure switches and connections.

5. Size of earth, continuity conductor shall be GI strip 32x6mm for all motors above 50HP GI strip of 25x4mm for all motors from 25 HP to 50HP and 4SWG GI wire for motors up to 25 HP. 6. All loads up to 63A shall be controlled by MCB & with MCCB for loads above 63A. 7. Manufacturers, Technical back up after sales service support shall be provided for chiller package. 8. Suitable supports for holding the ducts and pipes will be provided by tenderer as specified and directed and shall be deemed to be included in the quoted rate. 9. Control wiring with copper conductor cables shall deemed to be included. 10. Air filters shall be of 5.0 microns in plenum and 10 microns for AHU pre filter. 11. Velocity of air in supply air duct shall not exceed 450m/min (1500FPM) and velocity at diffuser outlet shall not exceed 150m/min (500 FPM) 12. Any work not included in the above details but is an in escapable technical requirement for the efficient performance and smooth functioning of the plant shall be clearly specified and included in the technical offer. 13. COP shall not be less than 4.7 14. The design conditions as specified in the tender shall be achieved within maximum 120 minutes time. 15. 3/6 core flat copper conductor of suitable size for compressor motors, cooling tower motor, chiller motor condenser motor and AHU motors etc shall deemed to be included in the unit rate quoted. 16. Minimum one chiller shall be tested at 100 % load on ARI test bed at manufacturer’s premises to verify the actual capacity & power consumption of the chiller machines. 17. Perforated GI sheet cable tray 100mm width fixed on angle iron supports grouted in wall for carrying all cables shall be deemed to be included in the quoted rate.

18. Initial charging of oil and refrigerant shall be deemed to be included in the quoted rate. 19. Under deck insulation in AHU rooms is also deemed to be inclusive of quoted rate by the tenderer. 20. The complete plant is to be installed ,tested and commissioned only by the skilled engineer of the original Manufacturer of the chiller-packages .Necessary confirmation is to be submitted by the contractor after completion of the work with test certificates before dept undertakes further testings as per tender and cost is deemed to be included in the quoted rate.

Dismantling of central type AC plant any type of capacitys upto 3x 50 TR water cooled AC Plant and 3 x 50 TR comprising of following complete and loading transporting and handing over to the MES store yard and as directed by Engr-in -charge. Note :- i) Chiller units AC plant compressor,mounting frame with refrigeration piping and instrument panel complete. ii) condenser piping /Chiller piping with fitting fixture etc. iii) Ducting with grills and diffusers,dampers,supports. iv) Air handling unit complete v) cooling tower and connected accesories complete. vi) LT electrical panel board and cable.

CENTRAL AIR CONDITIONING WORKS INCLUDING DESIGN, SUPPLY, INSTALLATION, TESTING & COMMISSIONING [INCLUDING PHASE – I & PHASE – II PERFORMANCE TESTS]:

Design,Supply, installation,testing and commissioning of scroll type Chiller Central Air Conditioning plant, water cooled with multi compressor, comprising of Hermetically sealed Compressors, Flooded type Evaporator, Shell and tube Condenser, suitable expansion device, suitable for operation on and nominal capacity of minimum 3x50 TR ( 2 Nos working at a time & 1 No Standby) comprising of the following :

[A]CHILLER PACKAGE UNIT:- Micro processor controlled scroll type chiller unit complete, factory assembled, factory tested, of minimum 50 TR x 3 Nos(one number as standby), minimum 100 TR nominal cooling capacity working on latest eco friendly (With no greenhouse effect) refrigerant (Green gas) comprising of scroll compressors operated with green gas suitable for 415V, 50 Hz, 3 phase, piping controls & accessories, starter & microprocessor control panel, refrigerant, oil charged mounted on common base frame with anti vibration pads complete as per manufacturer's specifications as recommended by OEM: 03 Nos (Two nos working at a time and one stand by). [i] Efficiency of scroll type chiller package shall comply with latest ECBC norms. [ii] The contractor shall submit catalogue indicating model No of unit offered and test certificate indicating power consumption at 25%, 50% 75% and 100% load for approval of GE before placing the final order. Power consumption at part load shall also be as per ECBC norms. [iii] The scroll type chillers shall be accepted by GE based on test certificates. RCC foundation as per manufacturers standards shall be deemed to be included in the rate quoted. [B]CONDENSER WATER CIRCULATION SYSTEM: Comprising of the following:- [i] FRP induced draft cooling tower 1 No of 110% capacity of the plants (working capacity minimum 100 TR) complete with spray section, honey comb fill, basin, CT fan, TEFC Motor, intake bird screen and other accessories with out cut off arrangements at the time of low ambient conditions (Technical Specifications as per the manufacturer or OEM Recommendations) - 01 Job [ii] Condenser of adequate capacity of above plant as per OEM recommendation (shell & tube type) consisting of copper tubes-03 Nos) Note:-Necessary water supply line and pit masonry for tapping water from the existing pipe line/tank shall be deemed to be included in the quoted rate.

[iii] HDPE/PVC make up water tank of adequate capacity but not less than 5000 liters (02 Nos) installed on PCC/brick staging up to height as per manufacturer specifications for make up water requirement including brass float valve with polyethylene ball, over flow and drain arrangement, incoming connection of suitable bore GI pipe medium grade from tank to tapping point including necessary cutting of existing pipe line and tapping of branch connections with GI pipe of suitable bore medium grade all as directed (The item rate is inclusive of provisioning all connected inlet pipe lines from existing sources and all outlet pipes - 01 Job [iv] Energy efficient mono block type 3 phase electric driven pump sets of adequate capacity working on 415V AC for re-circulation of condenser water of 50% plant capacity-03 Nos (02 Nos working and 1 No standby) & FASD starter for re-circulation of condenser water with ribbed rubber vibration isolation pads two nos mounted on ISMC frame (painted with anti corrosive primer & paint) on PCC foundation complete all as specified or as recommended by OEM. - 01 Job [v] Condenser water piping of MS class 'B' medium grade (ISI marked), pipe and fitting of suitable size connected/jointed by electric arc continuous welding including two coats of anti corrosive paint over a coat of primer for interconnecting the cooling tower with condensers and pump, make up water tank, drain pipe, complete with Y strainer, NRV,pressure gauges and butterfly valves- 01 Job. Make of MS pipes will be approved by GE [vi] Non-chemical type on line scale preventer of required size as per the capacity of the condenser water pumping system including piping and control valve.

[a] Compressors : Semi hermetic scroll compressors with minimum loading capacity 25%, operating voltage 360 - 440 Volts, 50 Hz, 3 Phase AC supply and working with refrigerant R- 410A / R - 407C / R - 134A. [b] Condenser Section : Shell and Tube type condenser internally knurled copper tubes [c] Expansion Valve : Electronic expansion valve should be capable enough to operate on wider temperature range with energy efficient improvement at part load conditions, as per manufacturer's specifications. [d] Evaporator : Flooded type evaporator all as per manufacturer's specifications. [e] Safety Protection : Safety protection on low cooling temperature, low oil pressure, high refrigerant pressure, electric leak, compressor overload, high/low voltage and single phasing shall be provided. Automatic control of refrigerant condition and compressor ON/OFF status and loading sequence system shall be provided. [f] Refrigerant : HFC - 134A / HFC - 410A / HFC - 407C of zero ozone depletion potential refrigeration circuits of total capacity as per manufacturer's specifications. [g] Control : Micro Processor control with LCD interface capable of monitoring all machine operating parameters like suction / discharge pressure Oil pressure, compressor operating hours, set point, air temperature, entering/ leaving water temperature etc complete and precisely manages the operation of compressors, expansion devices, fans and of the evaporator/ chiller water pump for optimum energy efficiency as per manufacturers specifications.

[C] CHILLED WATER CIRCULATION SYSTEM Comprising of the following:- [i] Chiller unit - 03 Nos [ii] Energy efficient mono block type 3 phase electric driven pump sets of adequate capacity working on 415V AC for re-circulation of chilled water of 50% plant capacity-03 Nos (02 Nos working and 1 No standby) including 100mm dia Pressure gauge on delivery side of pumps including rubber vibration isolation pads mounted on ISMC frame (painted with anti corrosive primer & paint) on PCC foundation including all connections complete all as specified. - 01 Job [iii] Chilled water piping with MS Medium Grade ERW pipe of suitable diameter including all wieldable fittings, butterfly valves NRVs & 'Y' strainers for interconnection between water chiller, chilled water pumps with AHUs and cooling coil units. Chilled water piping shall be insulated with 75mm thick EPS pipe section TF quality cladded with Aluminium sheet 26 SWG including water flow switch and electrically operated modulating / Three way mixing valve of required size with actuator & modulating thermostat control for each AHU - 1 No. [iv] PVC / HDPE Expansion tank of 1000 ltrs capacity including insulation with 75mm thick fibre glass/thermo coal/density of 24kg/cum finished with cement plaster including civil works and painting with 3 coats of cement based paint and GI medium grade piping connections and necessary piping control valves on inlet, outlet and wash out, float valve etc-01 Job.

[D] AIR TREATMENT SYSTEM : Comprising of the following:- [i] Double skin construction air handling unit suitable for chilled water system made out of extruded aluminium structural frame /aluminium corners and intermediate connecting pieces and panels of galvanised steel sheet of appropriate thickness as recommended by OEM on both sides with 25mm thick pressure injected PUF of appropriate density using CFC free blowing agent ,the panels having scratch free plastisol coating on outer side.The fan section should be mounted on anti vibration spring isolators and free from main structure.The fan should be back ward curved centrifugal fan with air discharge up blast, belt driven with TEFC induction motor of suitable capacity.The coil section consist of 6 row deep coil with min 12 fins/inch duly coated . The filter section consist of prefilter with 5 micron 90% efficiency .The other accessories are view port, limit switch, stainless steel (SS3) drain pan , volume control damper with Energy Efficient Motor(EE Series) of suitable capacity and specified makes, AHU shall be provided with UVC emitters & fixtures in sufficient quantity so as to provide equal distribution of UVC energy on the coil and in the drain pan all as specified or as recommended by OEM. [ii] Strip type Heater bank of suitable capacity in three banks with necessary copper conductor wiring for banking complete - 03 Sets [iii] Pan type humidifier comprising of stainless steel tank and pan necessary heater, wiring, water piping GI pipe medium grade 15mm bore including float valve and brass stop cock in inlet pipe. The make of GI pipe will be approved by GE [iv] Humidistats and Thermostats are to be provided in AHU room [v] Three way Mixing Valve of required size with motorised actuator and modulating thermostat control for AHU.

[vi] Accoustic Insulation with 25mm thick fibre glass rigid boards and finished with RP tissue paper and 28 mm gauge aluminium perforated sheet upto 5 mt from outlet of the air plenum including air plenum for all AHUs all as specified and directed. [vii] Under deck insulation for AHU rooms shall be provided with Fire retardant XPE closed cell of appropriate thickness as recommended by OEM metalised polyester film and self adhesive backings with protection peel off paper. [viii] Fresh air damper with GI bowl/ fittings and mosquito proof netting shall be provided for AHU. [E] AIR DISTRIBUTION SYSTEM:- Comprising of the following:- [i] Supply and return air ducting made out of commercial grade GI sheet Zinc coating 120 grade, IS : 277 and factory fabricated as per SMACNA - 1995 standards and as per IS-655 , required portion of duct shall be acoustically insulated with standard size of AC sheets, insulated with 25 mm thick resin bonded fibre glass wool of density 24 Kg /cum covered with factory laminated aluminium foil fixed with adhesive tape & finally cladded with 26 SWG aluminium sheet & supported by internal channel & clamping, wherever the ducting passes through un-conditioned space shall be insulated with 75 mm thick resin bonded fibre glass wool of density 24 Kg /cum and covered with GI chicken wire mesh and cladded with aluminium foil fixed with adhesive tape and finally cladded with 26 SWG aluminium sheet & supported by internal channel & clamping,wherever the ducting is exposed to sky shall be insulated with 75 mm thick resin bonded fibre glass wool of density 24 Kg /cum covered with polythene sheet faced hessian cloth, GI chicken wire mesh and cladded with sand cement plaster and supported by MS channel & clamps complete in all respect. Make : Sail/ Tata/Jindal

[iv] Control Wiring : Refrigeration control wiring with FRLS copper conductor, pvc insulated, unsheathed, multistranded ,1100V grade,singlecore of size 1.5 sqmm drawn in and including PVC conduit of suitable size for interlocking arrangement as per standard practice with thermostat, humidistat, balancing valve, blowermotor,pumps , starter etc., all as directed shall deemed to be included in the quoted rate. [v] Earthing: Earthing of electric equipments with galvanised steel earth plate electrode 600x600x6mm buried directly in ground earth pit not less than 2.25m deep below normal ground level, connecting to and including GI strip 32x6mm (up to the body of the equipment) by means of two GI bolts/nuts/washers. Earth plate shall be surrounded by packed layers of charcoal dust and common salt 15cm thick all around bottom and top and watering pipe 20mm dia projected 30cm above the GL with one socket and removable GI plug on top x 2.25 meters light grade perforated galvanised steel top with socket and plug and bottom connected to earth plate by slit and two bolts/nuts/washers. Earth strip shall be protected by 40mm bore GI light grade pipe to test point/equipment. The earth strip shall be tested after carefully completion as per IS specifications - 06 Jobs Note: Earth work, GI pipe as required is deemed to be included in the unit rate.

[G] Civil Work:- Comprising of Masonry foundation for chilling units, pumping sets, cooling tower and make up water tank and AHUs etc, by making opening in the brick wall and making good for ducts, pipes, cables and fresh air intake complete all as directed. This AC plant system is being installed in existing building which is being used for operation. This involves a lot of alteration/ modification in the building. All these modification will be deemed to be included in the quoted rate. The tenderer is advised to visit the site prior to quote the rate. The tendered will submit a detailed structural drawing for necessary support structure for supporting the duct from AC plant room to the building for the approval of accepting officer. The cost of this support structure is deemed to be included in the quoted rate. Notes: 1.All civil works required to install, test and commissioning the equipment like excavation , foundation for equipment , necessary cable ducts with MS covers 10mm thick duly painted, excavation for laying pipe etc & making good all disturbed/broken surfaces. and finishing patch work to match existing surface including fixing the ducting etc, shall be deemed to be included in the above offer. 2. Necessary water supply GI pipe connections of suitable size incl control valves for the Cooling towers / Expansion tank and A/C plant from existing water supply connection is deemed to be included in the quoted rate. 3. Suitable provision to connect condensate outlets from AHUs fan coil units to main drainage through HDPE/PVC / GI pipes shall deemed to be included in the rate quoted. 4. All three phase motors shall be provided independent single phasing preventer with phase reversal and over load protection including with electronic interlocking by various cut out pressure switches and connections.

5. Size of earth, continuity conductor shall be GI strip 32x6mm for all motors above 50HP GI strip of 25x4mm for all motors from 25 HP to 50HP and 4SWG GI wire for motors up to 25 HP. 6. All loads up to 63A shall be controlled by MCB & with MCCB for loads above 63A. 7. Manufacturers, Technical back up after sales service support shall be provided for chiller package. 8. Suitable supports for holding the ducts and pipes will be provided by tenderer as specified and directed and shall be deemed to be included in the quoted rate. 9. Control wiring with copper conductor cables shall deemed to be included. 10. Air filters shall be of 5.0 microns in plenum and 10 microns for AHU pre filter. 11. Velocity of air in supply air duct shall not exceed 450m/min (1500FPM) and velocity at diffuser outlet shall not exceed 150m/min (500 FPM) 12. Any work not included in the above details but is an in escapable technical requirement for the efficient performance and smooth functioning of the plant shall be clearly specified and included in the technical offer. 13. COP shall not be less than 4.7 14. The design conditions as specified in the tender shall be achieved within maximum 120 minutes time. 15. 3/6 core flat copper conductor of suitable size for compressor motors, cooling tower motor, chiller motor condenser motor and AHU motors etc shall deemed to be included in the unit rate quoted. 16. Minimum one chiller shall be tested at 100 % load on ARI test bed at manufacturer’s premises to verify the actual capacity & power consumption of the chiller machines. 17. Perforated GI sheet cable tray 100mm width fixed on angle iron supports grouted in wall for carrying all cables shall be deemed to be included in the quoted rate.

18. Initial charging of oil and refrigerant shall be deemed to be included in the quoted rate. 19. Under deck insulation in AHU rooms is also deemed to be inclusive of quoted rate by the tenderer. 20. The complete plant is to be installed ,tested and commissioned only by the skilled engineer of the original Manufacturer of the chiller-packages .Necessary confirmation is to be submitted by the contractor after completion of the work with test certificates before dept undertakes further testings as per tender and cost is deemed to be included in the quoted rate.

SAI KRISHNA ASSOCIATES (BID ID -3227714)

UTSAV INDIA LIMITED (BID ID -3235223)

AP BUILDERS (BID ID -3227955)

kb technologies (BID ID -3233098)

RS COOLING APPLIANCES (BID ID -3229142)

BRITE INDUSTRIES (BID ID -3229397)