SPECIAL REPAIR REPLACEMENT OF AC PLANT AT AF STN NAL

Amount

Dismantling and taking down old central AC plants various type comprising compressors, compressor motors, condenser pumps, cooling tower, AHU, panel board with control switches, condenser water pipe lines, etc. and all connected items including demolition of foundation from SEW-I ( 3 x15 TR capacity) (Tech Area) Plant for facilating replacement of BER plants with new plants and removing from site and deposited in MES store all as directed by Engr-in-charge.

WATER COOLED CHILLED MACHINE : Supply, Installation, testing & Commissioning of Factory designed and pre fabricated vapour compression refrigeration water cooled scroll chiller units having nominal capacity not less than 44 TR having not less than 11 TR each x 04 Nos (3 Working + 1 No stand by) with one or multiple semi hermetic scroll type compressor/s of OEM make with microprocessor control. The Unit shall have compressor mounting arrangement on rubber Grommets with metal sleeves. Water cooled shell & tube type condenser. DX type evaporator duly insulated. Thermostatic expansion valve with Extl. Equalizer. The unit shall be factory assembled duly tested , have filter dryer, pressure switch i.e. HP/LP, Electronic Thermostat Flow switch at chiller, Integral Refrigerant Piping & wiring, Accessories as required and called for, automatic and safety control mounted in central console Electronic microprocessor with soft starter panel central overloaded protector including, initial charge of Refrigerant and compressor oil comprising of following accessories/facilities: Note : (i) Efficiency of scroll chiller package shall comply with ECBC norms. (ii) Contractor shall submit manufacturer certificate indicating power consumption. (iii) contractor shall submit make & model number of machine before giving order for approval of GE. (iv) Contractor shall responsible for all phase I & phase II test as specified in PS clause 22 & 23 at page No135 & 136 . Make : BLUE STAR model No XWC2S-011R2 or equivalent model from CARRIER / Voltas / Kirloskar

Scope of Work: (a) Set of Scroll type compressor hermetic complete with suitable capacity squirrel cage induction motor with class 'F' insulation suitable for operation on 415+ 10% volts, 50Hz, A.C. supply and automatic capacity control, safety switches, forced feed lubrication system etc. as per specifications. (b) Control panel for Close transition type automatic star-delta starter suitable for compressor motor complete with ammeter with CTs, over load protection, under voltage protection, protection against phase reversal & independent single phase preventors etc. complete as required.

(c) 1 Set - Lubrication device consisting of automatic electric oil pump, oil cooler, oil strainer, automatic pressure regulating valve, oil heater, oil heater thermal switch etc. as per specifications. (d) 1 Set. - Matching Water Cooled condenser having Copper tube with Mechanically bonded aluminium fins. (e) 1No. - Matching DX type chiller for Chiller units (f) 1 Lot- Refrigerant piping fittings, valves and accessories to interconnect compressor, condenser, chiller and expansion valve. (g) 1 Set- Microprocessor based control panel complete with all safeties, controls and LCD display as per specifications. (h) 1 Lot- Refrigerant line accessories comprising of safety valves, angle valve, liquid line indications. (j) Lot- Water flow switches at inlet and outlet of chiller. Water drain and air purge valves whenever required.

(k) Lot- Suction line and chiller insulation with minimum 19mm thick polyvinyl nitril rubber insulation complete as required. (l) Lot- Frame work for mounting the above condenser, chiller compressor and motor with base plate complete with anti vibration pads/springs. (m) Lot- Initial / first charge of refrigerant gas and compressor oil. (n) 1 No. Chilled water flow meter of suitable size and capacity (o) Lot - PCC cement concrete foundation for the Chiller unit as per manufacturer instructions and all as directed by Engineer-in-Charge/GE (3 W + 1 S)

Protection & Mode: (i) Auto/Manual (ii) Single Phasing Protection (iii) Compressor Restart Protection (iv) 10- Sec Time Delay between System (v) Short Circuit Protection 5°C - Anti Freeze Protection (vi) Display on Micro control indicating compressor ON/OFF (vii) Crankcase Heater ON/Off, Entering/Leaving water Temp

Refrigerant: (viii) Refrigerant charged with Ozone depleting potential and energy efficient refrigerant such as R-134a/ R-410a / R-407C. (ix) Actual capacity as per Ambient condition. (x) Scroll Chiller Unit shall be suitable for 400 V±10%, 50 C/S, 3 Phase AC Supply.

Chiller (xi) Chilled water Inlet Temp. 12˚ C (approx) (xii) Chilled water outlet Temp. 7˚ C, (approx) (xiii) Chilled water flow rate: 2.5 to 3 USG PM/Tr (xiv) Fouling Factor: 0.000088 m².K/W

Condenser (xv) Condenser water Inlet Temp. 32.5˚C (xvi) Condenser water outlet Temp. 37.5˚ C, (xvii) Condenser water flow rate: 3.5 GPM/Tr

Supply, installation, testing and commissioning of double skin construction Air handling unit for operation of supply and return air application capacity not less than 13000 CFM, indoor type, draw through type of sectionalized construction, factory made, floor mounted made of 25mm thick modular AHU panels with GI casing of thickness 24 Gauge outside layers and 24 Gauge inside layer injected with CFC free polyurethane foam (PUF) of 40 kg/cum & 25 mm +/-2mm thick density insulation complete with blower section, chilled water cooling coil section, filter section with muffler and access door to attend the motor/fan with lighting provisions and all accessories including necessary PCC foundation with vibration isolators all as specified and as directed by Engineer-in-charge including comprising of following :-

(i) Cooling coil of 6 row deep copper tube with aluminium fins minimum 12 fins/inch with automatic controlled anti-freeze thermostat.

(ii) Blower section complete with blower AMCA certified centrifugal fan(s), belt drive backword curved fans, vibration isolators. 50 mm static pressure is considered for weather maker suitable for desired static pressure as specified , with minimum 2 bends GSS eliminators with suitable capacity TEFC squirrel cage induction motor (IP-55 and class F insulation) for operation on 3 phase 415 volt 50 HZ AC supply with belt driven pulley. The fan section should be mounted on antibibration spring isolation and free from main section.

(iii) 50 mm thick washable type pre-filters with filter element made out of synthetic non woven media supported by HDPE mesh on both side including stitching in diamond pattern complete including frame and suitable for efficiency 90% down to 10 micron EU-3 Type as per BS 6540 Part-I complete with mounting frame work.

(iv ) Secondary dry type cleanable and easily maintainable air filter supported by GI wire and folder to form accordion plate having an efficiency of 99% down to 5 micron EU-5 TYPE complete with mounting frame works.

(v) Drain connection, stainless steel (SS304 Grade) drain pan and with necessary GI pipe for drain out the condensate to the open drain of the building.

(vi) Humidification system complete with monoblock pump set of suitable size, water tank, pipe line & sprinkler as required at site with fully automatic arrangement for operation with humidistat. Approved Make: Rapid /Fedderslloyd /flak wood/ Voltas/zeco.

CONDENSER WATER PUMP SET: Supply, Installation & commissioning centrifugal mono block pump set (1 working + 1 stand by) factory assembled & tested for rated efficiency complete with motor & common base frame, coupling guard, cladded insulation etc. for re-circulation of condensed water from cooling tower to condenser for the air conditioning system. The pumps shall be suitable for operation on 415 ± 10% Volts, 50 Hz, 3 Phase AC power supply all as specified and directed by Engineer-in-charge. Make :- KSB/ Crompton Graves / Beacon/Kirloskar. The pump characteristic of centrifugal pump set shall be as follows: (a). Water flow rate - 116 US GPM (approx) (b). Static Head - 18 M (c). Impeller - Bronze Note: Each pump set & connected Items shall be measured as one unit/job Scope of work: (a) 1 No.- mono block type pump (b) 1 No. - Suitable HP TEFC squirrel cage induction motor with class 'F' insulation 2900 rpm synchronous speed, operating on 415+ 10% volts, 3 phase, 50 Hz A.C. supply. (c) 2 Nos. -100 mm dia dial type pressure gauges. (d) Lot- Mounting frame with Anti vibration pads. (e) Lot-PCC cement concrete foundation for the pump unit as per manufacturer's instruction all as directed by Engineer-in-Charge/GE. (1 working simultaneously & 1 standby - Each of 100% capacity)

CHILLED WATER PUMP SET: Supply, Installation & commissioning centrifugal mono block pump set (1 working + 1 stand by), factory assembled & tested for rated efficiency complete with motor & common base frame, coupling guard, cladded insulation etc. for re-circulation of chilled water for the air conditioning system. The pumps shall be suitable for operation on 415 ± 10% Volts, 50 Hz, 3 Phase AC power supply complete all as specified and directed by Engineer-in-charge. Make :-KSB/CromptonGraves/Beacon/Kirlosker. The pump characteristic of centrifugal pump set shall be as follows: (a). Water flow rate - 100 US GPM (approx) (b). Static Head - 18 M (c). Impeller - Bronze. Note: Each pump set & connected Items shall be measured as one unit/job Scope of work: (a) 1 No.- mono block type pump (b) 1 No. - Suitable HP TEFC squirrel cage induction motor with class 'F' insulation 2900 rpm synchronous speed, operating on 415+ 10% volts, 3 phase, 50 Hz A.C. supply (c) 2 Nos. -100 mm dia dial type pressure gauges. (d) Lot- Mounting frame with Anti vibration pads. (e) Lot-PCC cement concrete foundation for the pump unit as per manufacturer's instruction all as directed by Engineer-in-Charge/GE (1 working simultaneously & 1 standby---Each of 100% capacity) (f) 1 Lot - insulation of pump of 13 mm thick with aluminium foil faced closed cell chemically crossed linked XPE foam material

COOLING TOWER: Supply, Installation, testing and commissioning of FRP cooling tower of capacity not less than 50 TR (approx 150% of full load) heat rejection capacity with FRP water basin PVC fillings with integral louvers and drift eliminators complete with hot water basin either fitted with spray nozzles or having self rotating sprinklers, statically & dynamically balanced axial flow type fan direct driven or driven through reduction gear box with TEFC induction motor, suction screen, make up quick filling arrangement, over flow and drain connections with necessary valves and suitable inspection ladder, access arrangement for cooling lower interior, installed on MS girders (MS-I sections) fixed in masonry foundations with cement concrete footing, second class brick work and cement mortor1:6; all accessories, basin fittings, fan, fan motor suitable for 415 Volt supporting structure, anti vibration mountings etc. complete and 50 HZ power supply having isolator panel with MCB at cooling tower and with following technical data. (a) Water flow/tower 180 USGPM (minimum) (b) Inlet Water Temp. 97 °F (c) Out let water Temp. 90 ˚F

Dismantling and taking down old central AC plants various type comprising compressors, compressor motors, condenser pumps, cooling tower, AHU, panel board with control switches, condenser water pipe lines, etc. and all connected items including demolition of foundation from Transmitter (3 x12 TR capacity) (Tech Area) Plant for facilating replacement of BER plants with new plants and removing from site and deposited in MES store all as directed by Engr-in-charge.

WATER COOLED CHILLED MACHINE: Supply, Installation, testing & Commissioning of Factory designed and pre fabricated vapour compression refrigeration water cooled scroll chiller units having nominal capacity not less than 33 TR having not less than 11TR each x 03 Nos (2 Working + 1 No stand by) with one or multiple semi hermetic scroll type compressor/s of OEM make with microprocessor control. The Unit shall have compressor mounting arrangement on rubber Grommets with metal sleeves. Water cooled shell & tube type condenser. DX type evaporator duly insulated. Thermostatic expansion valve with Extl. Equalizer. The unit shall be factory assembled duly tested , have filter dryer, pressure switch i.e. HP/LP, Electronic Thermostat Flow switch at chiller, Integral Refrigerant Piping & wiring, Accessories as required and called for, automatic and safety control mounted in central console Electronic microprocessor with soft starter panel central overloaded protector including, initial charge of Refrigerant and compressor oil comprising of following accessories/ facilities: Note : (i) Efficiency of scroll chillar package shall comply with ECBC norms. (ii) Contractor shall submit manufacturer certificate indicating power consumption. (iii) Contractor shall submit make & model number of machine before placing the final order for approval by GE. (iv) Contractor shall responsible to carry out all phase I & phase II test as specified in PS Clause 22 & 23 at Ser Page No. 135 & 136 respectively. Make: BLUE STAR Model No XWC2S-011R2 OR equivalent model from CARRIER /VOLTAS/KIRLOSKAR

Scope of Work: (a) Set of Scroll type compressor hermetic complete with suitable capacity squirrel cage induction motor with class 'F' insulation suitable for operation on 415+ 10% volts, 50Hz, A.C. supply and automatic capacity control, safety switches, forced feed lubrication system etc. as per specifications. (b) Control panel for Close transition type automatic star-delta starter suitable for compressor motor complete with ammeter with CTs, over load protection, under voltage protection, protection against phase reversal & independent single phase preventors etc. complete as required.

(c) 1 Set - Lubrication device consisting of automatic electric oil pump, oil cooler, oil strainer, automatic pressure regulating valve, oil heater, oil heater thermal switch etc. as per specifications. (d) 1 Set. - Matching Water Cooled condenser having Copper tube with Mechanically bonded aluminium fins. (e) 1No. - Matching DX type chiller for Chiller units (f) 1 Lot- Refrigerant piping fittings, valves and accessories to interconnect compressor, condenser, chiller and expansion valve. (g) 1 Set- Microprocessor based control panel complete with all safeties, controls and LCD display as per specifications. (h) 1 Lot- Refrigerant line accessories comprising of safety valves, angle valve, liquid line indications. (j) Lot- Water flow switches at inlet and outlet of chiller. Water drain and air purge valves whenever required.

(k) Lot- Suction line and chiller insulation with minimum 19mm thick polyvinyl nitril rubber insulation complete as required. (l) Lot- Frame work for mounting the above condenser, chiller compressor and motor with base plate complete with anti vibration pads/springs. (m) Lot- Initial / first charge of refrigerant gas and compressor oil. (n) 1 No. Chilled water flow meter of suitable size and capacity (o) Lot - PCC cement concrete foundation for the Chiller unit as per manufacturer instructions and all as directed by Engineer-in-Charge/GE (3 W + 1 S)

Protection & Mode: (i) Auto/Manual (ii) Single Phasing Protection (iii) Compressor Restart Protection (iv) 10- Sec Time Delay between System (v) Short Circuit Protection 5°C - Anti Freeze Protection (vi) Display on Micro control indicating compressor ON/OFF (vii) Crankcase Heater ON/Off, Entering/Leaving water Temp

Refrigerant: (viii) Refrigerant charged with Ozone depleting potential and energy efficient refrigerant such as R-134a/ R-410a / R-407C. (ix) Actual capacity as per Ambient condition. (x) Scroll Chiller Unit shall be suitable for 400 V±10%, 50 C/S, 3 Phase AC Supply.

Chiller (xi) Chilled water Inlet Temp. 12˚ C (approx) (xii) Chilled water outlet Temp. 7˚ C, (approx) (xiii) Chilled water flow rate: 2.5 to 3 USG PM/Tr (xiv) Fouling Factor: 0.000088 m².K/W

Condenser (xv) Condenser water Inlet Temp. 32.5˚C (xvi) Condenser water outlet Temp. 37.5˚ C, (xvii) Condenser water flow rate: 3.5 GPM/Tr

Supply, installation, testing and commissioning of double skin construction Air handling unit for operation of supply and return air application capacity not less than 9500 CFM, indoor type, draw through type of sectionalized construction, factory made, floor mounted made of 25mm thick modular AHU panels with GI casing of thickness 24 Gauge outside layers and 24 Gauge inside layer injected with CFC free polyurethane foam (PUF) of 40 kg/cum & 25 mm +/-2mm thick density insulation complete with blower section, chilled water cooling coil section, filter section with muffler and access door to attend the motor/fan with lighting provisions and all accessories including necessary PCC foundation with vibration isolators all as specified and as directed by Engineer-in-charge including comprising of following :-

(i) Cooling coil of 6 row deep copper tube with aluminium fins minimum 12 fins/inch with automatic controlled anti-freeze thermostat.

(ii) Blower section complete with blower AMCA certified centrifugal fan(s), belt drive backword curved fans, vibration isolators. 50 mm static pressure is considered for weather maker suitable for desired static pressure as specified , with minimum 2 bends GSS eliminators with suitable capacity TEFC squirrel cage induction motor (IP-55 and class F insulation) for operation on 3 phase 415 volt 50 HZ AC supply with belt driven pulley. The fan section should be mounted on antibibration spring isolation and free from main section.

(iii) 50 mm thick washable type pre-filters with filter element made out of synthetic non woven media supported by HDPE mesh on both side including stitching in diamond pattern complete including frame and suitable for efficiency 90% down to 10 micron EU-3 Type as per BS 6540 Part-I complete with mounting frame work.

(iv) Secondary dry type cleanable and easily maintainable air filter supported by GI wire and folder to form accordion plate having an efficiency of 99% down to 5 micron EU-5 TYPE complete with mounting frame works.

(v) Drain connection, stainless steel (SS304 Grade) drain pan and with necessary GI pipe for drain out the condensate to the open drain of the building.

(vi) Humidification system complete with monoblock pump set of suitable size, water tank, pipe line & sprinkler as required at site with fully automatic arrangement for operation with humidistat. Approved Make: Rapid /Fedderslloyd /flak wood/ Voltas/zeco.

Supply & Fixing Flexible canvass Connection for AHU's/package units to duct including zib superior quality all as specified and directed by Engineer-in-charge.

Supply and fixing of GI Volume Control Dampers with matching flanges complete all as specified and directed by Engineer-in-charge

Supply and fixing fresh air arrangement with VCD, Louvers and Bird screen complete all as specified and directed by Engineer-in-charge

Supply and fixing of mechanical fire dampers fusible type approved for 90 minutes fire rating as per UL-555-1995 in main supply air duct including control wiring. The dampers shall be made of heavy gauge galvanized steel having multi blade construction. The blades shall be fitted with chrome plated shaft and self lubricated phosphorus bronze bushes. The dampers shall also be provided with jam seal (compression type) on sides to prevent spread of smoke and fire. The blades of the dampers are held in the ‘open’ position by a high tensile spring and a fusible link. The fusible link should be UL stamped and operates at 74˚C, causing the damper to close immediately on break fire to prevent the spread of fire through the ducts all as specified and as directed by Engineer-in-charge.

Supply and fixing of heater bank 06 Nos of 3 KW/each for winter heating complete all as specified and directed by Engineer-in-charge. Note : Rate is inclusive for thermostat & control wiring from AHU panel to heater bank for auto function.

Supply and fixing of heater bank 9 Nos of 3 KW/each for winter hearting complete all as specified and directed by Engineer in charge. Note : Rate is inclusive for thermostat & control wiring from AHU panel to heater bank for auto function.

Supply and fixing of digital temp & humid display system showing ambient temp, humidity temp and humidity necessary control wiring and sensor include Thermostat complete all as specified and directed by Engineer-in-charge Make: Honeywell/Rapid cool or equivalent.

Supply and fixing of PVC sheathed armoured copper cable of size 25 Sqmm 3.5 core, superior quality, laying over GI slotted cable tray including necessary supports and frame work complete all as specified and directed by Engineer-in-charge. (For compressor units)

As per Ser item No 17.00 but size 10 Sqmm 4 core (For AHUs & Winter heaters) complete all as specified and directed by Engineer-in-charge.

As per Ser item No 17.00 but size 6 Sqmm 4 core (For pumps & humidifier & de humidifier) complete all as specified and directed by Engineer-in-charge.

As per Ser item No 17.00 but un armoured size 1.5 Sqmm 2 core (from control cable from water flow switch to pump panel etc) complete all as specified and directed by Engineer-in-charge.

Supply and fixing control cable PVC insulated PVC sheathed copper conductor 3 core 1.5 sqmm 1100 volt grade and testing complete all as specified and directed by Engineer-in-charge. Note for item No 17 to 21:- GI slotted cable tray including necessary supports and frame work will be measured and paid separately.

Supply and fixing of GI slotted cable tray 50 mm high in 16 SWG. 150mm width including necessary supports and frame work complete all as specified and as directed by Engineer-in-charge.

Supply and fixing of GI slotted cable tray 50 mm high in 16 SWG. 300mm width including necessary supports and frame work complete all as specified and as directed by Engineer-in-charge.

Supply and fixing of GI slotted cable tray 50 mm high in 16 SWG. 100mm width including necessary supports and frame work complete all as specified and as directed by Engineer-in-charge.

Material and labour earthing complete with Galvanized steel earth electrode 600 x 600 x 6 mm thick buried directly in ground (earth pit not less than 2.25 Mtr deep below normal ground level) with top edge of earth electrode not less then 1.5 Mtr below normal ground level connected to GI strip of size 32x6mm as earth lead by means of bolts, check nuts and washers of galvanized iron or steel connected to earth test point including earth strip from earth electrode to test point , GI pipe 40mm dia light grade as protection pipe and 20mm dia GI pipe light grade for watering pipe of required length including charcoal dust, common salt, excavation and earth work earth pit with PCC 1:3:6 type CI (using 20 mm graded stone aggregate, precast RCC cover 40 mm thickness reinforced with 3 Nos TMT bars 8mm dia both ways, funnel with wire mesh, testing and rest as shown in electrical plate No-3 of SSR-I including complete all as specified and directed. Note: Earthing strip and protection pipe upto 7.5 meter length shall be deemed to be included in the quoted unit rate. Earthing strip beyond 7.5 meter shall be measured and paid separately.

Material and labour earthing complete with Galvanized steel earth electrode 600 x 600 x 6 mm thick buried directly in ground (earth pit not less than 2.25 Mtr deep below normal ground level) with top edge of earth electrode not less then 1.5 Mtr below normal ground level connected to GI wire of size 4 mm dia as earth lead by means of bolts, check nuts and washers of galvanized iron or steel connected to earth test point including earth strip from earth electrode to test point , GI pipe 15mm dia light grade as protection pipe and 20mm dia GI pipe light grade for watering pipe of required length including charcoal dust, common salt, excavation and earth work earth pit with PCC 1:3:6 type CI (using 20 mm graded stone aggregate, precast RCC cover 40 mm thickness reinforced with 3 Nos TMT bars 8mm dia both ways, funnel with wire mesh, testing and rest as shown in electrical plate No-3 of SSR-I including complete all as specified and directed.Note: Earthing strip and protection pipe upto 7.5 meter length shall be deemed to be included in the quoted unit rate. Earthing strip beyond 7.5 meter shall be measured and paid separately.

Earthing complete with copper earth plate electrode 60×60cm.× 3.15 mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less than 1.5 m below normal ground level, connected to copper strip of size 20 x 3mm thick by means of bolts, nuts, check nuts and washers of connected to earth test point including earth strip from earth electrode to test point , GI pipe 40mm dia light grade as protection pipe and 20mm dia GI pipe light grade for watering pipe of required length including charcoal dust, common salt, excavation and earth work earth pit with PCC 1:3:6 type CI (using 20 mm graded stone aggregate, precast RCC cover 40 mm thickness reinforced with 3 Nos TMT bars 8mm dia both ways, funnel with wire mesh, testing and rest as shown in electrical plate No-3 of SSR-I including complete all as specified and directed. Note: Earthing strip and protection pipe upto 7.5 meter length shall be deemed to be included in the quoted unit rate. Earthing strip beyond 7.5 meter shall be measured and paid separately.

Material and labour for earth continuity conductor or main earthing lead of size 20mm x 3mm thick copper strip fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc.complete all as specified and directed.

CONDENSER WATER PUMP SET: Supply, Installation & commissioning centrifugal mono block pump set (1 working+1 stand by) factory assembled & tested for rated efficiency complete with motor & common base frame, coupling guard, cladded insulation etc. for re-circulation of condensed water from cooling tower to condenser for the air conditioning system. The pumps shall be suitable for operation on 415 ± 10% Volts, 50 Hz, 3 Phase AC power supply all as specified and directed by Engineer-in-charge. Make :- KSB/ Crompton Graves / Beacon/Kirloskar. The pump characteristic of centrifugal pump set shall be as follows: (a). Water flow rate - 80 US GPM (approx) (b). Static Head - 20 M (c). Impeller - Bronze Note: Each pump set & connected Items shall be be measured as one unit/job Scope of work: (a) 1 No.- mono block type pump (b) 1 No. - Suitable HP TEFC squirrel cage induction motor with class 'F' insulation 2900 rpm synchronous speed, operating on 415+ 10% volts, 3 phase, 50 Hz A.C. supply. (c) 2 Nos. -100 mm dia dial type pressure gauges. (d) 1 lot- Mounting frame with Anti vibration pads. (e) Lot-PCC cement concrete foundation for the pump unit as per manufacturer's instructions & all as directed by Engineer-in-Charge/GE. (1 working & 1 standby-Each of 100% capacity)

CHILLED WATER PUMP SET: Supply, Installation & commissioning centrifugal mono block pump set (1 working + 1 stand by), factory assembled & tested for rated efficiency complete with motor & common base frame, coupling guard, cladded insulation etc. for re-circulation of chilled water for the air conditioning system. The pumps shall be suitable for operation on 415 ± 10% Volts, 50 Hz, 3 Phase AC power supply complete all as specified and directed by Engineer-in-charge. Make :- KSB/ Crompton Graves / Beacon/Kirlosker. The pump characteristic of centrifugal pump set shall be as follows: (a). Water flow rate - 70 US GPM (approx) (b). Static Head - 20 M (c). Impeller - Bronze Note: Each pump set & connected Items shall be be measured as one unit/job Scope of work: (a) 1 No.- mono block type pump (b) 1 No. - Suitable HP TEFC squirrel cage induction motor with class 'F' insulation 2900 rpm synchronous speed, operating on 415+ 10% volts, 3 phase, 50 Hz A.C. supply (c) 2 Nos. -100 mm dia dial type pressure gauges. (d) Lot- Mounting frame with Anti vibration pads. (e) 1 Lot-PCC cement concrete foundation for the pump unit as per manufacturer's instructions & all as directed by Engineer-in-Charge/GE (1 working & 1 standby---Each of 100% capacity) (f) 1 Lot - insulation of pump of 13 mm thick with aluminium foil faced closed cell chemically crossed linked XPE foam material

COOLING TOWER: Supply, Installation, testing and commissioning of FRP cooling tower of capacity not less than 50 TR (approx 150% of full load) heat rejection capacity with FRP water basin PVC fillings with integral louvers and drift eliminators complete with hot water basin either fitted with spray nozzles or having self rotating sprinklers, statically & dynamically balanced axial flow type fan direct driven or driven through reduction gear box with TEFC induction motor , suction screen, make up quick filling arrangement, over flow and drain connections with necessary valves and suitable inspection ladder, access arrangement for cooling lower interior, installed on MS girders (MS-I sections) fixed in masonry foundations with cement concrete footing, second class brick work and cement mortor1:6; all accessories, basin fittings, fan, fan motor suitable for 415 Volt supporting structure, anti vibration mountings etc. complete and 50 HZ power supply having isolator panel with MCB at cooling tower and with following technical data. (a) Water flow/tower 120 USGPM (minimum) (b) Inlet Water Temp. 97 °F (c) Out let water Temp. 90 ˚F

Supply, laying, testing and commissioning of MS Pipe heavy grade with all fitting laid in floors or fixed to walls and ceilings etc of sizes for condenser water pipes with complete fittings such as bends, tees, elbows, reducers, flanges, special fittings, suspension hangers, etc including paint with synthetic enamel paint with approved color code complete all as specified and directed of following size. Make :-TATA/Jindal/Prakash/Zenith (a) 80 mm dia

As per Ser item No 32.00 but size 65 mm dia complete all as specified and directed by Engineer-in-charge.

As per Ser item No 32.00 but size 50 mm dia complete all as specified and directed by Engineer-in-charge.

Supply and fixing of Cast Iron flanged Balancing Valves with pressure test cocks only in EN-3 Stem EN-3 disc and EPDM sealing Disc with PN -10 complete all as specified and directed of size 65 mm dia. Make :- Advance / Castle/ Flowcon.

Supply and fixing of Butterfly valves Cast Iron body, Wafer type integrally moulded close end body construction with Hand liver operated and rating of PN-10 complete all as specified and directed of following size. Make :-Advance/Castle / Intervalve /SAAPL (a) 80 mm dia

As per Ser item No 35.00 but size 65 mm dia complete all as specified and directed by Engineer-in-charge.

Supply and fixing of Dual Plate Check Valves Cast Iron body (NRV) & Rating of PN -10 complete all as specified and directed of 65 mm dia size. Make :-Advance/Castle / Intervalve /SAAPL

As per Ser item No 37.00 but size 80 mm dia complete all as specified and directed by Engineer-in-charge.

Supply and fixing of Ball valves/ purge Valve of size 25 mm dia with insulation complete all as specified and directed. Make :- Sant/ RB/ Itap

Supply and fixing water flow switches complete all as specified and as directed by Engineer-in-charge.

Supply and fixing of Pressure 4" Dia Gauges 0 to 14 Kgs of Burden Type, stainless steel or CP brass stem complete with Globe valves confirming to IS - 3624 complete all as specified and directed. Make :- Feibig/Waree/ H- Guru

Supply and fixing of Bimetal Dial type temperature Gauge of 100 mm dia. of suitable range with adjustable stem complete all as specified and directed . Make :- Feibig/Waree/ H-Guru

Supply and laying of water piping with GI pipe medium grade 25mm dia and necessary fittings like elbows, tees, reducers etc complete all as specified and directed.

Supply and fixing of 2000 Ltr PVC Make Up tank three layer, white, including overflow Valve, float Valve and connection complete all as specified and directed.

Supply and fixing of 500 Ltr MS Make Up Tank including required thermal insulation as per requirement of chilled water make up tank of AC plant and Overflow Valve, Float Valve and connection to chilled water pipeline with 32 mm dia GI 'heavy grade' pipe of required length complete all as directed and as specified by Engineer-in-charge. Note: Quoted unit rate shall be included cost of make up tank, thermal insulations, over flow valve, float valve and GI pipe complete.

Supply & Fix GI duct of suitable size fabricated at site to match with the existing system with GI/PGI sheet of grade 120 class VII confirming to IS : 655 ducting confirming to SMACNA standards air distribution system comprising of supply air ducts necessary support to duct will be provided using 25 x 25 x 4mm angle iron or frame duly welded and will be fixed at site as per standard engineering practice for centrral air conditioning of building including interconnectors as required from AHU units to the space to be air-conditioned with suitable supporting arrangements of suitable thickness including necessary supports, hangers, fasteners, nuts-bolts, gaskets, splitter, vanes etc and making good the disturbed surface with finished to match with the existing surfaces, complete all as specified and directed by Engineer - in charge. (a) 20 Gauge Factory fabricated Duct

As per Ser item No 46.00 but 22 Gauge Factory fabricated Duct complete all as specified and directed by Engineer-in-charge.

As per Ser item No 46.00 but 24 Gauge Factory fabricated Duct complete all as specified and directed by Engineer-in-charge. Note for Item 46.00 to 48.00: Rate quoted shall deem to include for taking down old u/s GI duct of any size and making good the surface.

Supply and laying of accoustic insulation of duct with 25 mm fibre glass rigid board covered with 28 Gauge Aluminium perforated sheet and RP tissue complete all as specified and as directed by Engineer-in-charge.

Supply and laying of thermal insulation of duct with 13 mm thick nitrile faom sheet insulation having density 50 kg/cum and fixing with adhesive as per the recommendation of the manufacturer complete all as specified and as directed by Engineer-in-charge.

Supply, installation, testing and commissioning of 65mm three way motorised modulating valves with modulating motor and thermostat etc. complete with fittings like elbows, tees, reducers, bends, MS flanges, supports, welding etc. as per requirement complete all as specified and as directed by Engineer-in-Charge.

Design, fabrication, supply, installation, testing and commissioning of the following Indoor type LT panel suitable to be mounted on the floor/cable duct/ wall as per site requirement using M.S channel frame work, with cable entry from bottom/top as per drawing coordination by EIC with removable gland plates with required knock-outs for incoming and outgoing cables. Panel shall be fabricated out of CRCA sheet 2 mm thick steel folded and braced as necessary to provide a rigid support for all components, totally enclosed and degree of protection shall not be less than IP-54, multi-tier cubicle type formation with front hinged lockable doors for the individual feeders/compartments, preparation of surface and treatment by seven tank process, powder coated with approved colour for not less than 50 microns and all doors and covers shall be fully gasket using good quality EPDM gasket and /or rubber strips, and to provide good quality locking arrangement, durable door opening & closing mechanism, Copper bus bar for three phases and neutral, bus bar insulators, heat shrinkable PVC sleeves etc.., with necessary interconnections as specified in Technical specifications for electrical & mechanical works, including comprising of following switchgear and accessories complete in all respects. Note : (i) Contractor shall submit GA drg for approval of GE before placing order. (ii) Each switch gear shall separate cubical (iii) Cable alley shall be provided at side of panel with adequate size width (iv) Each out going shall have Amp meter & ON / OFF indicator lamp

Outgoing (a) For 11 TR chiller units (For SEW-I AC Plant) 63 Amp, 25KA, 415V TP+NL MCCB with adjustable thermal settings, overload and short circuit release including door interlocking device, front operating handle , ON and OFF indication of LED module, bus bar extension for connecting cables etc. complete in all respects-04 Nos (b) For Chilled water pump :- (a) 32 Amp. 16 KA, 415V TP MCCB with adjustable thermal with starter, Voltage and Amp meter with suitable rating CTs, ON/OFF switch complete all as specified and directed. -02 Nos. (b) The starter shall be with single phase prevention and electronic timer, with sufficient auxiliary contacts for remote ON/OFF indication lamps, bi-metallic thermal overload relay of suitable size current rating, ON/OFF push buttons suitably wired and interconnected with 4.0 Sq.mm single stranded PVC copper wire, etc, complete in all respects.

(c) For Condenser water pump :- (a) 32 Amp. 16KA, 415V TP MCCB with adjustable thermal settings, with starter suitable for condenser motors rating, AC 3 duty 415V, 50Hz, 3 Phase motor-2 Nos , Voltage and Amp meter with suitable rating CTs, ON/OFF switch complete all as specified and directed. (b) The starter shall be with single phase prevention and electronic timer, with sufficient auxiliary contacts for remote ON/OFF indication lamps, bi-metallic thermal overload relay of suitable size current rating, ON/OFF push buttons suitably wired and interconnected with 4.0 Sq.mm single stranded PVC copper wire, etc, complete in all respects.

(d) For AHU Panel - 125 Amp 25 KA, MCCB TPN- 01 No (e) For Cooling Tower :- (a) 32 Amp. 16KA, 415V TP MCB with adjustable thermal settings, with starter suitable for 5 HP cooling Tower motors rating, AC 3 duty 415V, 50Hz, 3Ph motor-1 No (b) The starter shall be with single phase prevention and electronic timer, with sufficient auxiliary contacts for remote ON/OFF indication lamps, bi-metallic thermal overload relay of suitable size current rating, ON/OFF push buttons suitably wired and interconnected with 4.0 Sq.mm single stranded PVC copper wire, etc., complete in all respects.

Design, fabrication, supply, installation, testing and commissioning of the following Indoor type LT panel suitable to be mounted on the floor/cable duct/ wall as per site requirement using M.S channel frame work, with cable entry from bottom/top as per drawing coordination by EIC with removable gland plates with required knock-outs for incoming and outgoing cables. Panel shall be fabricated out of CRCA sheet 2 mm thick steel folded and braced as necessary to provide a rigid support for all components, totally enclosed and degree of protection shall not be less than IP-54, multi-tier cubicle type formation with front hinged lockable doors for the individual feeders/compartments, preparation of surface and treatment by seven tank process, powder coated with approved colour for not less than 50 microns and all doors and covers shall be fully gasket using good quality EPDM gasket and /or rubber strips, and to provide good quality locking arrangement, durable door opening & closing mechanism, copper bus bar for three phases and neutral, bus bar insulators, heat shrinkable PVC sleeves etc.., with necessary interconnections as specified in Technical specifications for electrical & mechanical works, including comprising of following switchgear and accessories complete in all respects. Note : (i) Contractor shall submit GA drg for approval of GE before placing order. (ii) Each switch gear shall separate cubical (iii) Cable alley shall be provided at side of panel with adequate size width (iv) Each out going shall have Amp meter & ON / OFF indicator lamp

Outgoing (a) For AHU :- (i) 63 Amp. 16KA, 415V TP MCCB, with starter suitable for AHU Fan motor rating, AC 3 duty 415V, 50Hz, 3 Phase motor, Voltage and Amp meter with suitable rating CTs, ON/OFF switch complete all as specified and directed. -01 No (ii) The starter shall be with single phase prevention and electronic timer, with sufficient auxiliary contacts for remote ON/OFF indication lamps, bi-metallic thermal overload relay of suitable size current rating, ON/OFF push buttons suitably wired and interconnected with 4.0 Sq.mm single stranded PVC copper wire, etc, complete in all respects. (b) For Heater Bank 63 Amp. 16KA, 415V TP+NL MCCB with adjustable thermal settings-01 Nos & 06 No MCB 20 Amps SPN with suitable size wiring complete all as specified and directed. (c) For Humidifier 32 Amp. 16KA, 415V TPN MCB with adjustable thermal settings-01 Nos with suitable size wiring complete all as specified and directed. (d) Winter heating Controlling system complete with humidity control with thermostat, humidistat and metering / auto controlling including inter locking arrangement on ON / OFF switches and necessary wiring. Job – 01. Make Honey well / Rapid cool.

Supply and fixing aluminium extruded powder coated return /supply air grill with Volume control dampers with matching flanges horizontal fixed bar of 12 Nos,1.2mm thick and 11.5mm spacing with 0/15/30 degree deflection (ISI marked) complete all as specified and directed by Engineer-in-charge.

Supply and fixing aluminium extruded powder coated return/supply grill without Volume control dampers with matching flanges horizontal fixed bar of 12 Nos,1.2mm thick and 11.5mm spacing with 0/15/30 degree deflection (ISI marked) complete all as specified and directed by Engineer-in-charge.

Supply, installation, Testing & commissioning in line water softener considering water softening flow rate same as condenser line hardness given 80 PPM and hardness of outlet will be less than 5 PPM for condenser water circuit complete all as specified and directed by Engineer-in-charge. Make: Thermax/Ion Exchange or equivalent. Note for item No 01 to 56 above: The above sch is for replacement of 4x11 TR centralized AC plant at SEW & 3 x 11 TR Central AC Plant at Transmitter. The civil work for opening & widnening wall, and making good the same for pipe support, duct supports, foundation of eqpt etc. as per manufacturer's recommendation & given in the specification all as directed by Engineer-in-Charge/GE are deemed to be included in the quoted unit rate of Ser item No 1 to 56 above.

Demolition of cement concrete in roofs, any thickness, including plastering and leeping (whether full thickness removed or only a part thereof) complete all as specified and directed.

Material and labour for PCC 1:2:4 type B-1, using 20 mm graded stone aggregate for roof repair complete all as specified and as directed by Engineer-in-Charge.

Material and labour Rendering 10 mm thick cement plaster in cement mortar 1:4 on fair faces of brick work or concrete surfaces for fixing wall tiles complete all as specified and as directed by the Engineer-in-Charge.

Material and labour three coats of white wash on newly plastered or unplastered surfaces of ceiling including preparation of surface complete all as specified and directed.

Dismantling, taking down existing false ceiling carefully for duct work and refixing the same in position with replacement of GI wire of suitable size, replacement of damaged ceiling board of existing type to match the existing surface complete all as specefied and as directed by Engineer-in-Charge.

Supply, laying/fixing, testing and commissioning the following nominal sizes of chilled plumbing pipes MS ‘C’ CLASS as per IS: 1239, inside the building(with necessary clamps, vibration isolators and fitting like flanges, union etc. but excluding valves, strainers, gauges etc.) cut to required lengths and welded at joints and inclusive of accessories like elbows, tees, reducers, sockets etc. including insulating with 19 mm (for chilled water pipes) and 13mm (for drain pipe) thick closed cell chemically cross linked fire retardant polyethylene foam insulation of density 30 Kg/cum. The thermal conductivity of the material should not exceed 0.035 W/Mk at an average temp of 40 deg Covered with aluminium faced foil complete with application with rubber based adhesive Pidilite SR 998 and 50mm x 3 mm thick self adhesive tape on both longitudinal & transverse joints simultaneously, all as specified and repairing damage to building etc. and conforming to the specified specification for size 65 mm dia complete all as specified and as directed by Engineer-in-Charge. Make : TATA / JINDAL /ZENITH / PRAKASH

All as per Item No 62.00 above but size 50 mm dia complete all as specified and as directed by Engineer-in-Charge.

All as per Item No 62.00 above but size 25 mm dia complete all as specified and as directed by Engineer-in-Charge.

All as per Item No 62.00 above but size 80 mm dia complete all as specified and as directed by Engineer-in-Charge.

All as per Item 62.00 above but size 100 mm dia complete all as specified and as directed by Engineer-in-Charge.

Material and labour for Brick work with sub-class ‘B’ bricks straight or curved on plan exc 6 m mean radious built in cement mortar 1:4 for water tank support pillar complete all as specified and as directed by Engineer-in-Charge.

Material and labour for reinforced cement concrete type B1 1:2:4 (20 mm graded aggregate) in bases for Column, basement slab, roof slab for water tank etc. complete all as specified and as directed by Engineer-in-Charge.

Outsourcing for maintenance and operation of central/package type AC plants alongwith DG Sets (all as per details given) and connected equipments/ assets in three shifts of 08 hours each, per day round the clock continuous duration including sundays and holidays during SUMMER / MONSOON / WINTER BY EMPLOYING ONE OPERATOR, Skilled ITI qualified in the trade for each shift at each location as given below :- Note : The rates quoted by the contractor shall include the Following :- (i) To maintain plant room, incl general cleaning of surrounding area. (ii) To maintain the log sheet / log book on daily basis, weekly, fortnightly and monthly. (iii) Uniform to be worn by the operator during his duty hours. (iv) DHPP for DG Set shall be arranged by the Deptt. (v) Replacement of minor parts of costing Rs. 500 per month. (vi) Providing cleaning & renewals T&P items. (vii) Routine cleaning of all machinem'es and eqpts. (viii) Routine checking of LT panel control panel, AHU panels periodically. (ix) Periodical maintenance of chillar plant weekly, monthly, qtrly, half yearly & yearly described in the manufacture manual. Operator shall inform MES, the defects if any noticed timely after DLP and the same will be carried by the contractor under DLP for item No 1.00 to 64.00 without any extra cost. (x) Contractor shall responsible to replace the machine/ compressor/ eqpts/ components if found un-serviceable within 24 hours during defect liability period.

All as per Ser Item No 65.00 above For First Year (After completion of Work under phase-1) at following locations :- (i) SEW NO. 1 (aa) AC plant 3 X 11 = 33 TR capacity (in working) (ab) AC plant 1 x 11 = 11 TR capacity (as stand by ) (ac) DG Set 125 KVA capacity -01 No (ii) SEW NO. 2 (aa) AC plant 2 x 8.5 = 17 TR capacity (in working) (ab) AC plant 1 x 8.5 = 8.5 TR capacity (as stand by) Note : Both the installations at SEW No. 1 and SEW No. 2 shall be operated by only one operator only at a time.

All as per Ser Item No 65.00 as above but at (iii) TRANSMITTER (aa) AC plant 2 X 11 = 22 TR capacity (in working) (ab) AC plant 1 x 11 = 11 TR capacity (as stand by) (ac) DG Set 62 KVA capacity -01 No

All as per Ser Item No 65.00 as above for Second Year (After completion of Work under phase-1) at following locations :- (i) SEW NO. 1 (aa) AC plant 3 X 11 = 33 TR capacity (in working) (ab) AC plant 1 x 11 = 11 TR capacity (as stand by ) (ac) DG Set 125 KVA capacity -01 No (ii) SEW NO. 2 (aa) AC plant 2 x 8.5 = 17 TR capacity (in working) (ab) AC plant 1 x 8.5 = 8.5 TR capacity (as stand by) Note : Both the installations at SEW No. 1 and SEW No. 2 shall be operated by only one operator only at a time.

All as per Ser Item No 65.00 as above but at (iii) TRANSMITTER (aa) AC plant 2 X 11 = 22 TR capacity (in working) (ab) AC plant 1 x 11 = 11 TR capacity (as stand by) (ac) DG Set 62 KVA capacity -01 No

SHRI RAMSONS PROJECTS CORPORATION

AP BUILDERS

M/s Rohit Construction Co.

M/S SUVIDHA ENGINEERS (PROJECT)

Flint India