REPLACEMENT OF CENTRAL AC PLANT OF VARIOUS CAPACITY AT DRDL AGAINST BER UNDER GE I RND KANCHANBAGH HYDERABAD

Amount

WATER-COOLED TYPE SCROLL CHILLER UNIT (2W + 1S) - Supplying, installing, testing & commissioning of inverter water cooled scroll chillers, Minimum Actual capacity (2 nos working + 1 no. standby) with ,multi compressors, comprising of Hrmatic type compressors, DX-Evaporator, shell and condenser suitable expansion device for operation on R-410A / R-407C refrigerants and of actual capacity , Control panel as mentioned & as per specification . Frame work for mounting the above condenser, chiller, compressor and motor with base plate complete with anti vibration pads/springs. Initial/first charge of refrigerant gas & compressor oil. The chiller operation parameters shall be Chilled water in 53.6 ºF(12.0º C) Chilled water out 44.6 ºF(7.0ºC) Max operating pressure 150 psig(water side/condenser side) Condenser water IN 96.8 ºF (36 ºC) Condenser water OUT 89.6 ºF (32 ºC) Chiller fouling factor 0.000018 m² deg K/W Condenser fouling factor 0.000044 m² deg K/W Chilling machine COP (at AHRI conditions ) shall be as per OEM and IPLV as per OEM & all performance requirements at ARI 550/590-1998 test condition all as specified and directed for following capacities :-

Minimum 20 TR Metrology Bldg (2W+1S)

Minimum 40 TR Magzine Bldg (2W+1S)

Minimun 35 TR 3DCNC Bldg (2W+1S)

Minimum 30 TR AID/AIC Bldg (2W+1S)

WATER-COOLED TYPE SCREW CHILLER UNIT (2W + 1S) - Supplying, installing, testing & commissioning of water cooled screw chillers, Minimum Actual capacity (2 Nos working + 1 no standby) with multi compressors, comprising of semi -Hrmatic type compressors, DX-Evaporator, shell and condenser suitable expansion device for operation on R-134A / R-407C refrigerants and of actual capacity, control panel as mentioned & as per specification . Frame work for mounting the above condenser, chiller, compressor and motor with base plate complete with anti vibration pads/springs. Initial/first charge of refrigerant gas & compressor oil. The chiller operation parameters shall be Chilled water in 53.6 ºF(12.0º C) Chilled water out 44.6 ºF(7.0ºC) Max operating pressure 150 psig(water side/condenser side) Condenser water IN 96.8 ºF (36 ºC) Condenser water OUT 89.6 ºF (32 ºC) Chiller fouling factor 0.000018 m² deg K/W Condenser fouling factor 0.000044 m² deg K/W Chilling machine COP (at AHRI conditions ) shall be as per OEM and IPLV as per OEM & all performance requirements at ARI 550/590-1998 test condition of capacity Minimum 70 TR Knowledge Center Bldg complete all as specified and directed.

CHILLED WATER CIRCULATION PUMP - Supply, installation, testing and commissioning of monoblock, single-stage centrifugal pump, having cast iron casing, enclosed type dynamically balanced cast iron impeller, carbon steel pump shaft, mechanical packed sealing, deep groove ball bearings, etc. with TEFC squirrel cage induction motor having class 'B' insulation, IE3 efficiency, conforming to IS 12615: 2018 and suitable for operation on 3-Ph, 415 V±10%, 50 Hz AC supply, base plate, mounting channel frame, accessories and fittings, viz. pressure gauges, thermometers, drains, coupling, coupling guard, vibration isolation arrangement by means of spring / rubber type mounting duly insulated with FM approved highly- flexible, closed-cell thermal insulation of elastomeric foam based on synthetic rubber (NBR) of apppropriate thickness laminated with 12 micron aluminium foil facing with reinforced glass scrim along with adhesives and other necessary accessories complete all as specified and directed for following capacities :-

7.5 HP (Suitable Head) as approved by GE

10 HP(Suitable Head) as approved by GE

5 HP(Suitable Head) as approved by GE

CONDENSER WATER PUMP - Supply, installation, testing and commissioning of monoblock, self-priming, single-stage centrifugal pump, having cast iron casing, enclosed type dynamically balanced cast iron impeller, carbon steel pump shaft, mechanical packed sealing, deep groove ball bearings, etc. with TEFC squirrel cage induction motor having class 'B' insulation, IE3 efficiency, conforming to IS 12615: 2018 and suitable for operation on 3-Ph, 415 V±10%, 50 Hz AC supply, base plate, mounting channel frame, accessories and fittings, viz. pressure gauges, thermometers, drains, coupling, coupling guard, vibration isolation arrangement by means of spring / rubber type mounting complete all as specified and directed for following capacities :-

7.5 HP (Suitable Head) as approved by GE.

10 HP (Suitable Head) as approved by GE.

5 HP (Suitable Head) as approved by GE.

FRP INDUCED DRAUGHT COOLING TOWER (1W) - Supply, installation, testing and commissioning of FRP rectanguler shape, vertical, induced draught counter flow single cell / Twin Cell cooling tower with uniform water distribution and optimal heat transfer, having tough fiberglass reinforced plastic (FRP) casing of sufficient structural strength to withstand vibrations and wind velocity upto 60 m/s, FRP basin, rigid honeycomb type PVC fill of suitable thickness, SS sprinklers and non-clogging sprinkler pipes, FRP drift eliminator, energy efficient induced draught axial type fans with factory set and dynamically balanced blades pitch, IE3 TEFC squirrel cage induction motor, suitable for operation on 3- Ph, 415 V, 50 Hz AC supply with IP 65 protection for enclosure, conforming to IS 12615: 2018, inlet, outlet, drain and over-flow nozzle connections, including foundation etc. with accessories complete all as specified and directed for following capacities :-

Minimum 125 TR (Magzine, ) - Twin Cell

Minimum 90 TR (3 DCNC, AID/AIC) . - Twin Cell

Minimum 60 TR (Metrology) . - Single Cell

Minimum 195 TR (Knowledge Center) . - Twin Cell

EXPANSION TANK FOR CHILLED WATER PIPING - Supply and fixing rigid PVC Expansion tank including foundation of sutiable height duly insulated with 50 mm thick TF quality thermocol and finished with GI chikcen wire mesh and two coats of sand cement platser complete with inlet, outlet, drain and over flow connections with all valves of 500Ltrs. capacity.

HDPE MAKE-UP WATER TANK FOR COOLING TOWER - S & F multilayered HDPE make-up water tank of 5000 litre capacity including foundation made up of 100% virgin material, having 100% UV stabilized white outer layer, threaded lid, extra insert lid for protection against algae formation complete with inter-connection piping and non-return valve etc. complete all as specified and directed.

(e) Chilled water cooling coil with aluminium blue finned copper tubes (tube thickness not less than 0.5mm), The face velocity across cooling coil shall be limited to 450 FPM max.The scope shall include Supply, Installation, Testing and Commissioning of sutiable size electronic, self balancing Heater to be considered for maintain the humidity of 55 +/- 5%. Heater control should be added in the AHU panel. AHU should have Cooling 6/8 row deep including suitable size PVC drain pipe with 13mm thick insulation to nearest connection and laid on and including perforated /ladder type tray. (f) Supply air stream shall have MERV 13 Filter section or equivalent, having pre (EU4, more than 90% efficiency for 10 Microns) and fine (Bag filter EU7 3 Microns). (g) Unit shall be complete with opposed blade aluminium volume control dampers at Supply, Return & Fresh Air opening in AHU. (h) Control Panel should be with AHU with VFD and bypass option including Heater and UVGI control in the same panel. (j) UVGI lamps( UL certified) - (Each AHU will have combination of 2 feet long UVGI lamps, each lamp shall cover effectively 4sqft of area ) in coil section of AHU. The scope shall include electrical wiring and electrical isolator for following capacities. The purpose of these UVGI lamps emitters is to improve indoor air quality (IAQ) by eliminating mould, bacteria and other contaminants in down stream section. (k) AHU's shall be mounted on P.C.C 1:2:4 type B1 blocks of required size with neoprene pads in between as per manufacturers instructions. Note: Fresh air changes shall be provided as per new NABH norms

AHU- 5000 CFM / ESP-15MM / minimum 50 TR / 27 KW HEATING / 8 ROW DEEP - 1 No (100% Fresh Air) (Magzine building)

AHU- 6500 CFM / ESP-15MM / minimum 50 TR / 27 KW HEATING / 8 ROW DEEP - 1 No (100% Fresh Air) (Magzine building)

AHU- 16000 CFM / ESP-15MM / minimum 74 TR / 36 KW HEATING / 6-8 ROW DEEP 2 Nos (1 ACPH) (3DCNC)

AHU- 18000 CFM / ESP-15MM / minimum 74 TR / 36 KW HEATING / 6-8 ROW DEEP 1 No (1 ACPH) (AID/AIC)

AHU- 20000 CFM / ESP-15MM / minimum 70 TR / 36 KW HEATING / 6-8 ROW DEEP 2 Nos (1 ACPH) (Knowledge Center)

AHU- 20000 CFM / ESP-15MM / minimum 50 TR / 36 KW HEATING / 6-8 ROW DEEP - 1 Nos (1 ACPH) (Metrology)

CONDENSER WATER PIPING - MS ERW CLASS- C PIPE -Supply, laying / fixing, testing and commissioning of condenser water piping including necessary fittings viz. bends, tees, reducers, flanges, air purge valves, drain valves, structural support, necessary clamps, vibration isolators, etc. including painting and supporting / fixing the pipe in excavated trenches or on floor / wall / ceiling with clamps, hangers, angles, channels (using anchor fastners) with necessary accessories complete all as specified and directed for following capacities :-

150 mm dia

100 mm dia

80 mm dia

125 mm dia

CHILLED WATER PIPING - MS ERW CLASS- C PIPE WITH INSULATION-Supply, laying / fixing, testing and commissioning of chilled water circulation piping including necessary fittings viz. bends, tees, reducers, flanges, air purge valves, drain valves, structural support, necessary clamps, vibration isolators, etc. including painting and supporting / fixing the pipe in excavated trenches or on floor / wall / ceiling with clamps, hangers, angles, channels (using anchor fastners) with necessary accessories duly insulated with FM approved highly- flexible, closed-cell thermal insulation of elastomeric foam based on synthetic rubber (NBR) of 25mm thickness laminated with 12 micron aluminium foil facing with reinforced glass scrim along with adhesives and other necessary accessories complete all as specified and directed for following capacities :-

150 mm dia

100 mm dia

80 mm dia

65 mm dia

BUTTERFLY VALVE - Supply, installation, testing and commissioning of wafer type PN 1.6 rated short pattern CI butterfly valve having Gr. FG-200 CI body conforming to IS 210: 2009, seat having EPDM rubber lining, CF 8 stainless steel disc, AISI- 410 stainless steel stem, 2.4 MPa body test pressure & 1.6 MPa seat test pressure and standard flange end conforming to BS 10 Table D/E & ANSI B 16.1 CI- 125 duly insulated with FM approved highly- flexible, closed-cell thermal insulation of elastomeric foam based on synthetic rubber (NBR) of apppropriate thickness laminated with 12 micron aluminium foil facing with reinforced glass scrim along with adhesives and other necessary accessories for following capacities :-

Y- STRAINER - Supply, installation, testing and commissioning of cast steel bolted cover Y-type strainer with CCS body conforming to ASTM A- 216 Gr. WCB, AISI 304 screen with 1.2 mm diameter perforation, 20 kg/cm2 body test pressure & 20 kg/cm2 maximum working pressure and standard flange end conforming to BS 10 Table F / Class-150 duly insulated with FM approved highly- flexible, closed-cell thermal insulation of elastomeric foam based on synthetic rubber (NBR) of apppropriate thickness laminated with 12 micron aluminium foil facing with reinforced glass scrim along with adhesives and other necessary accessories complete all as specified.

150 mm dia

100 mm dia

125 mm dia

NON-RETURN VALVE - Supply, installation, testing and commissioning of 80 mm NB wafer type PN 1.6 rated swing check type multidoor reflux valve (NRV), designed & tested as per IS 5312 (Part- 2): 1986, suitable to handle clear water having CI body, door and diaphram, leaded tin bronze seat rings and flange drilling standard end connection, etc. duly insulated with FM approved highly- flexible, closed-cell thermal insulation of elastomeric foam based on synthetic rubber (NBR) of apppropriate thickness laminated with 12 micron aluminium foil facing with reinforced glass scrim along with adhesives and other necessary accessories for following capacities :-

100 mm dia

65 mm dia

3-WAY TEMPERATURE CONTROL VALVE -Supply, installation, testing and commissioning of electronic, self-balancing, pressure independent type dynamic balancing valve rated for minimum 25 bar working pressure with integrated 3- Way modualating control valves in a single body and actuator capable of accepting upto 10 V DC and up to 20 mA electric signal and provide similar transduced feedback output to control system duly insulated with FM approved highly- flexible, closed-cell thermal insulation of elastomeric foam based on synthetic rubber (NBR) of apppropriate thickness laminated with 12 micron aluminium foil facing with reinforced glass scrim along with adhesives and other necessary accessories complete all as specified and directed for following capacities :- NOTES:[i] Maximum close off pressure shall not be less than 6 bar for upto 50 mm valves. [ii] Maximum close off pressure shall not be less than 7 bar for 65 mm & above.

100 mm dia

80 mm dia

DRAIN & INSTRUMENTATION PIPING - Supply, laying / fixing, testing and commissioning of PPR drain piping including necessary fittings viz. bends, tees, reducers, flanges, air purge valves, drain valves, structural support, necessary clamps, vibration isolators, etc. including painting and supporting / fixing the pipe on floor / wall / ceiling with clamps, hangers, angles, channels (using anchor fastners) with necessary accessories complete all as specified and directed.

25 mm dia

BALL VALVE - S & F of CL 150 # rated ball valve, designed & manufactured as per IS: 9890 (1981) and tested as per BS 6755 Part- I, piece design, CS body, SS- 304 ball, PTFE seal/packing/gasket, CS fastners and lever and screwed/socket weld end connection, etc. complete all as specified and directeed.

25 mm dia

AUTO AIR-VENT - Supply, installation, testing and commissioning of automatic air-vent valve with 20 mm end connections, brass OT 58 body and cover, polyacetal lever, high density expanded polyethylene float, EPDM rubber plug, stainless steel spring, polyamide cap etc. suitable for maximum operating pressure of 16 bar and maximum operating temperature 115 °C respectively, installed on all high points in the water piping system to automatically remove the trapped air complete all as specified and directed.

TEMPERATURE GAUGE - S & F of 6" dual scale (°F/°C), lower mount (radial), bimetal thernometer having 0.5 NPT process connection, Grade A accuracy class as per ASME B40.200, stem diameter 6.35 mm, laminated safety glass window, stainless steel 304 case, steam, process connection & joint, aluminium dial & pointer, IP67 protection, scale range 0- 50 °C complete with accessories, etc. complete all as specified and directed

PRESSURE GAUGE - S & F of 4" dia pressure gauge conforming to EN 837-1, having copper alloy process connection & pressure element, plastic black pointer & case, plastic crystal-clear window, snap-fitted in case, accuracy class 2.5, scale range 0- 25 bar complete with accessories, etc. as (12 for each location) complete all as specified and directed.

GI DUCTING WORK (FACTORY MADE/ Site Fabricated) - Designing, supplying, fabrication, installation and testing of GS sheet metal ducting complete with spliter damper, duct damper, vanes etc fabricated out of galvanised sheet class VII 120gm/ sqm zinc coating conforming to lS 277-1965 all as required complete all as specified and directed.

AIR TERMINALS - S & F of supply / return / exhaust air diffusers / grills / louvers of powder coated aluminium with aluminium volume control dampers with anti smudge ring & removable core complete all as specified and directed.

All as per item No 23 above but without volume control dampers.

S & F of GI with volume control damper / fresh air damper.

FIRE DAMPER - Supply, installation, testing and commissioning of 16 gauge GI fire damper, at least of 90 minutes fire-rating, spring activated on melting of fusible link having melting point 67.13° C complete with smoke detector / thermister, fusible link etc. and tested as per ULL- 555 and certified by CBRI complete all as specified and directed. The fire dampers shall meet the following criteria: [a] Bare fire dampers with 150 mm sleeve [b] Sealing any openings around the sleeve of the fire dampers with approved fire sealant as per the specification & recommandations of the manufacturer.

Fire and smoke damper

Fusible Link

THERMAL INSULATION - S & F of FM approved highly- flexible, closed-cell thermal insulation of elastomeric foam based on synthetic rubber (NBR), laminated with 12 micron aluminium foil facing with reinforced glass scrim tested for service temperature range 0- 105 ˚C as per EN 14706, EN 14707 & EN 14304, thermal conductivity λ ≤ 0.037 W/mK at mean temperature θm = 20 ˚C as per EN 12667 & EN ISO 8497, water vapour diffusion resistance factor μ ≥ 12000 as per EN 12086 & EN 13469, water absorption by volume 0.2% as per ASTM C 1763 & ASTM C 209, Class 0 fire performance as per BS 476 Part 6: 1989, Class 1 surface spread of flame as per BS 476 7: 1997, flammability HB, V-0 as per UL- 94, having good resistance to mechanical impact, excellent resistance to ozone, oil and chemicals, zero ozone depletion potential along with adhesives and other necessary accessories complete all as specified and directed.

19 mm thick thermal insulation (For Supply air duct inside building)

13 mm thick thermal insulation (For Return air duct inside building)

Acoustic Insulation - Supplying and fixing of acoustic lining of duct with 25 mm thick resin bounded fiber glass having a density of 33 kg/m3 and covered with 0.5mm thick perforated aluminium sheet all as specified and directed upto five metres of duct from the canvas connection of AHU complete all as specified and directed.

POWER & Control CABLES - M & L for ISI marked 1.1 kV grade aluminium conductor, XLPE insulated armoured cables, conforming to IS: 7098 (Part 1)- 1988 having stranded aluminium compact shaped conductor as per Cl. 2, IS: 8130- 1984, PVC inner sheath, single armouring of galvanized steel strip/wire and PVC Type ST- 2 outer sheath conforming to IS: 5831- 1984, including termination complete as specified and directed.

3.5C x 150 Sqmm Alu Arm Cable for Chiller

3.5C x 95 Sqmm Alu Arm Cable for Chiller

3.5C x 50 Sqmm Alu Arm Cable for AHU

4.0C x 16 Sqmm Alu Arm Cable for Pump

4.0C x 10 Sqmm Alu Arm Cable for Pump

3.0C x 10 Sqmm Alu Arm Cable for Cooling Tower

3.0C x 1.5 Sqmm Cu Cable for Interlocking

5.0C x 1.5 Sqmm Cu Cable for Humidistat & Thermostat

Cable Tray 200x50x1.6mm

Cable Tray 150x50x1.6mm

M&L for earthing complete with galvanised iron earth plate electrode 600 x 600 x 6 mm thick buried directly in ground earth pit not less than 2.25 m deep below normal ground level with top edge of the plate not less than 1.5 m below normal ground level connected to GI strip Size 25x4 mm thick by mean of nuts/bolts check nuts and washers including necessary excavation and earth work. GI Pipe 15 mm bore light grade for watering with Funnel wire mesh and protection to earthing strip shall be provided with Gl pipe light grade 25 mm dia up to 7.5 m from the earth plate electrode and refilling of soil including adequate quantity of charcoal dust and common sall etc & earth work in any strata PCC pit chamber in cement mortar 1:3:6 type C-2 with 40 mm thick precast RCC cover slab 1:2: 4 type B with 8 mm dia TMT bar. (10 for each plant) complete all as specified and directed.

M & L for earth contuinity conductor or main earthing lead 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. as required 25mm x 4 mm GI strip complete aall as specified and directed (50 RM for each plant)

M & L for earth contuinity conductor or main earthing lead 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. as required GI wire of 4.0 mm diameter complete all as specified and directed.

Removing existing false ceiling any type and refixing false ceiling making good as per existing all as directed by Engr-in-Charge.

Taking down central air conditioning plant of 2x20 TR including AHU's water pump sets, cooling towers, ducting and electrical connections with stand by 20 TR, including transporting to AGE E/M store yard and taking receipt voucher from duly authenticated.

Taking down central air conditioning plant of 2x40 TR including AHU's water pump sets, cooling towers, ducting and electrical connections with stand by 40 TR, including transporting to AGE E/M store yard and taking receipt voucher from duly authenticated.

Taking down central air conditioning plant of 2x35 TR including AHU's water pump sets, cooling towers, ducting and electrical connections with stand by 35 TR, including transporting to AGE E/M store yard and taking receipt voucher from duly authenticated.

Taking down central air conditioning plant of 2x30 TR including AHU's water pump sets, cooling towers, ducting and electrical connections with stand by 30 TR, including transporting to AGE E/M store yard and taking receipt voucher from duly authenticated.

Taking down central air conditioning plant of 2x70 TR including AHU's water pump sets, cooling towers, ducting and electrical connections with stand by 70 TR, including transporting to AGE E/M store yard and taking receipt voucher from duly authenticated.

Supply,Instalation testing & Commissioning of horizontal type Ultrasonic Humidifier of capcity 6 KW with Humidistate,the power connection of this humidifier 240 +/- 10%V, 50 Hz, 1-phase in operation and inlet water connection to be provided near this system by other agency as per given below details. Tank made from 1.5mm S.S Sheet (304), welded construction,Top Openable with S.S Bolts & mist output nozzle duly epoxy painted. Level Switch & filter assembly Motorized Valves with timer for auto flashing S.M.P.S, Contactor with MCB, ON / OFF Switch With light, Control Module & Mist Fan complete all as specified and directed.

AIRFRAME (BID ID -3266194)

kb technologies (BID ID -3263483)

omsai thermax engineers (BID ID -3266809)

AP BUILDERS (BID ID -3266872)

Shree Ayyappa Engineering (BID ID -3267279)

SATISH AND CO (BID ID -3267032)

M/s R.V. Constructions (BID ID -3263636)

M/s Vijay Airconditioning Pvt Ltd (BID ID -3266999)

DARSHAN CONSTRUCTION Co. (BID ID -3267208)

SVC PROJECTS PVT. LTD (BID ID -3266681)

Parksons Engineering Company Pvt Ltd (BID ID -3265433)