REPALCEMENT OF AC PLANT OF 50 TR CAPACITY AND CONNECTED WORKS AT AF STATION BKT

Amount

PART I (AIR CONDITIONING WORKS)

Water cooled scroll heat pump -------03 Units Supply, installation, testing & commissioning of scroll type modular water cooled heat pump with cooling capacity of 25 TR and heating capacity of 100 kW at below mentioned condition.( 2x25TR working +1x25TR standby ) There will be 03 Similar scroll type modular water cooled heat pump two will be working and one unit as Standby ) -Design conditions for Cooling: (a) Chilled Water Outlet Temperature : 7.0 deg C. (b) Condenser Water Inlet: 31.1 deg C. (c) Evaporator water flow (User Side): 76 USGPM (d)Condenser water flow(Heat Source Side): 96 USGPM (e)Pressure Drop on Evaporator & Condenser : 5.0 meter maximum (f)Minimum COP: 4.3 - Design conditions for Heating: (a) Hot water Out : 45 deg C. (b) Evaporator Water Inlet: 10 deg C. (c) Evaporator water flow (Heat Source Side): 96 USGPM (d) Condenser water flow(User Side): 76 USGPM (e) Pressure Drop on Evaporator & Condenser : 5.0 meter maximum (f) Minimum COP: 4.5 (g) Power consumption of Heat Pump for cooling should not exceed 0.90 KW/TR @ 100 % load on design condition. (h) Power consumption of Heat Pump for Heating should not exceed 1.0 KW/TR @ 100 % load on design condition. (j) Each heat pump to have multi compressors (Scroll Compressor) and multi refrigerant circuit in hermetic construction as per OEM design suitable for operation on 415 V +10 %, 50 Hz AC supply all as specified and directed. (k) Suitable Nos & suitable capacity squirrel cage induction motor with class 'F' insulation. (l) First charge of initial oil, R410 A refrigerant and controllers for all the heat pump. (m) Shell & Tube type Evaporator & Condenser to provide best heat exchange rate to meet COP requirement. 19 mm thick Nitrile rubber insulation from factory on evaporator and suction line. (n) Electronic Expansion valve to control refrigerant precisely.

(o) Refrigerant piping fittings, valves, accessories to inter connect compressor, condenser, chiller and expansion valve. (p) Control panel with display comprising of Controls. It shall also be equipped with protection and monitoring devices such as H/L Pressure switch/ Thermal and Current Overload Protector (q) DP/ Flow switches at inlet and outlet of heat pump, water drain & air purge valves, wherever required. (r) Lot-frame work for mounting the above condenser, chiller, compressor and motor with base plate complete with antivibration pads/ springs. (s) Suitable RCC/Cement concrete foundation for the chilling unit installation complete as required. Makes : Carrier ( 30MP Series) / Daikin (UWL030 Series) / Trane (CGWWQ Series) / York

Blank

COOLING TOWER Supply, installation, testing and commissioning of CTI Certified, FRP Induced draft, Cross flow, Direct driven , site erected cooling tower of capacity at Water Temp. IN : 36.4°C, Water Temp. OUT : 32.2°C and according to the parameters (Flow) as described below. (a) Cooling tower shall be complete with PVC Fills, Louvers , Drift Eliminators with flame spread rating of 5 as per ASTM E84, Weather Proof IP 55 TEAO (Totally Enclosed Air Over) Motor, statically and dynamically balanced Propeller Fan, FRP/ Steel Basin in the bottom of the basin, Hot dip galvanised / powder coated Steel Ladder, Perimeter handrail, Steel hardware including nut, bolt, washer etc., suction screen, make-up quick fill arrangement, overflow and drain connections with necessary valves, access arrangement for cooling tower interior / fan, cement concrete foundation, steel/ masonry supporting structure, anti-vibration mountings etc. For longer life of the product Hot dip galvanization / powder coating on the steel frame and ladder other hardware shall be with minimum G-235 / Poweder coated. (b) The maximum allowable sound power at a distance of 3 Mt for the one cell cooling Tower shall be less than 65 dB at air inlet . (c) Software generated curves to be submitted by manufacturer. Water Flow 760 LPM (200 US GPM) Capacity 187488 Kcal/hr Makes : PAHARPUR/ MIHIR

Condenser Water Pump Supply, erection, testing and commissioning of Vertical Inline Split Coupled (long coupled) Centrifugal Condenser water pump set capable of delivering following capacity of water, each comprising of the following and complete with TEFC squirrel cage induction motor, efficiency IE3 with class 'F" insulation. 1450 rpm synchronous speed, operating on 415+ 10% volts, 3 phase, 50 Hz A.C. supply, pump shall have CI body, Bronze impeller, spacer coupling and coupling guard, The mechanical seal shall be outside type, The internal components of pumps including mechanical seal shall be suitable to sustain a temperature of 122 degree Fahrenheit. Vendor shall provide antivibration arrangement for pumps as per Manufacturers recommendation . The pump should be rated for PN 16 maximun pressure. Minimum efficiency of pump shall be 55 %. The scope also shall include following. (i) 19mm thick polyvinyl nitrile rubber insulation duly cladded between aluminium sheets of 0.5mm thickness and properly clamped to pump. (ii) 2 Nos. - 150 mm dia dial type pressure gauges (iii) Mounting frame with antivibration pads ( anti vibration system shall be as per Manufacturers recommendation) (iv) RCC/cement concrete foundation for the pump unit. ( foundation shall be as per Manufacturers recommendation) (v) Pump capacity are as under: (a) For 25 TR capacity unit not less than 96 USGPM of water at 15 mtr head each including :- -Triple duty valve - End suction guide with strainer Make: ARMSTRONG Model series 4380-80-250-410-2.2KW or equivalent model in Grundfos/Xylem/ Kirlosker

Chilled Water Pump Supply, erection, testing and commissioning of Vertical Inline Split Coupled (Long coupled) Centrifugal primary chilled water pump set capable of delivering following capacity of water, each comprising of the following and complete with TEFC squirrel cage induction motor, efficiency IE3 with class 'F" insulation. 1450 rpm synchronous speed, operating on 415+ 10% volts, 3 phase, 50 Hz A.C. supply, pump shall have CI body, Bronze impeller, spacer coupling and coupling guard, The mechanical seal shall be outside type, The internal components of pumps including mechanical seal shall be suitable to sustain a temperature of 122 degree Fahrenheit. Vendor shall be provide antivibration arrangement for pumps . Pumps shall have minimum efficiency of pump shall be 55%. Pump shall be rated as PN 16 maximun pressure. The scope also shall include following:- (a) 19mm thick polyvinyl nitrile rubber insulation duly cladded between aluminium sheets of 0.5mm thickness and properly clamped to pump. (b) 2 Nos. ---- - 150 mm dia dial type pressure gauges (c) Mounting frame with antivibration pads (anti vibration system shall be as per Manufacturers recommendation) (d) RCC/cement concrete foundation for the pump unit. ( foundation shall be as per Manufacturers recommendation) Pump capacity are as under:- (a) For 25 TR capacity unit not less than 76 USGPM of water at 15 mtr head each (b) Triple duty valve (c) End suction guide with strainer Make: ARMSTRONG Model series 4380-50-250-410-2.2KW or equivalent model in Grundfos/Xylem / Kirlosker

Air Handling Unit (AHUs) Supplying, installing, testing and commissioning of factory built, site assembled double skin Air Handling units as described below :- (a) Standard 40 or 45 mm thick panels comprising of (i) Outer skin-----0.6 mm precoated GSS (ii) Inner skin ----0.6 mm precoated GSS (iii) 40 mm thick polyurathene foam insulation having density of 40kg/cum factory injected between them by injection moulding machine, (iv) view windows, (v) marine Lamp, (vi) limit switch, (vii) electrically interlocked fan section with hinged access door, (viii) fire retardant flexible joints for outlets of the units. (ix) Drain connection with stainless steel drain pan duly insulated and necessary vibration isolation arrangement to avoid any vibration etc. (b) The extruded aluminium framework shall be with thermal break profiles as required, minimum 2 bend GSS/PVC eliminators, (c) FAN SECTION :- Supply air fan plug type direct driven Backword curved fan with VFD, TEFC motors (IE3 efficiency) suitable for 415 + 10% volts, 50 Hz, 3 phase AC supply. Fans should be AMCA/ EuroVent certified for Air & sound performance. (d) COIL SECTION WITH 6RD CHW COIL :- (i) Chilled water cooling coil with aluminium finned copper tubes (tube thickness not less than 0.5mm), The face velocity across cooling coil shall be limited to 450FPM maximum AHU should have Cooling (6 row) . AHU Should be either Eurovent or equivalent certified. (ii) The scope shall include, supply, installation and testing and Commissioning of 65 mm dia electronic, self balancing, pressure independent type dynamic balancing valve with integrated 3 way modualating control valves in a single body. The actuator shall be capable of accepting upto 10V DC and upto 20mA electric signal and shall provide similar transduced feedback output to control system. Maximum close off pressure shall not be less than 6 Bar for upto 50 mm valves and not be less than 7 Bar for 65 mm & above. Valves should have pressure rating of 25 Bar minimum. Valve & Actuator combination should be able to give logarithmic control characteristics to achieve linear control.The valve shall have manual override facility & the scope shall include proportionate thermostat, transformer as required and wiring for interconnection with 1.5 sq.mm copper conductor multicore armoured cable complete as required.

(e) Supply air stream will have Filter section complying minimum MERV (Minimum Efficiency Reporting Value) 13 or higher having pre (EU4, more than 90% efficiency for 10 Microns), fine (Bag filter EU7 3 Microns). (f) The scope shall include Humidity and Temperature for Desired Inside Temperature condition. (g) UVGI lamps (UL Certified) - UVC emitter ( Each AHU will have combination of 2 feet long UVC 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 UVC emitters is to improve indoor air quality (IAQ) by eliminating mould, bacteria and other contaminants in down stream section. (h) The scope shall include :- (i) AHU's shall be mounted on P.C.C. blocks with neoprene pads in between. (ii) Set of each Temperature & water pressure guage (100 mm Ø) bourdon type with brass ball valve of 3/8" Ø and SS tubing, socket. Range (0-50) for coils (iii) Supply, installation , testing and commissioning of two nos. 15mm Automatic Air Vent valve suitable to purge out the trapped air in the water pipe line complete as required. Ball/Check valve must be installed with Auto Air Vent. (j) The capacity of Air-handlers shall be as follows: COIL UNIT : Carrier or as per OEM of AHU FAN;- Kruger or as per OEM of AHU

(a) AHU 9000cfm with 25 TR @ 50 mm static M/S VTS Clima India Pvt Ltd 520 wing B, Carton Tower, Old Air Port Road, Indiranagar, Banglore-560 008 or eqqivalent make and model of M/S System Air Pvt Ltd, Plot No. 03, ECOTECH-I Sector 31, Site IV, KASNA, Gerater Noida-201308 (UP) India / M/S Flakt Group India Pvt Ltd, 3B, ECOTECH-II, Udyog Vihar, Greater Noida, Distt. G B Nagar Noida (UP) India/ ZECO, Bahdurgarh(Haryana) / Edgetech Bahdurgarh (Haryana).

(b) AHU 11000 cfm with 25 TR @ 50 mm static M/S VTS Clima India Pvt Ltd 520 wing B, Carton Tower, Old Air Port Road, Indiranagar, Banglore-560 008 or eqqivalent make and model of M/S System Air Pvt Ltd, Plot No. 03, ECOTECH-I Sector 31, Site IV, KASNA, Gerater Noida-201308 (UP) India / M/S Flakt Group India Pvt Ltd, 3B, ECOTECH-II, Udyog Vihar, Greater Noida, Distt. G B Nagar Noida (UP) India/ ZECO, Bahdurgarh(Haryana) / Edgetech Bahdurgarh (Haryana).

Supply, installing, testing & commssioning of VFD Panel inclusive of the following :- The Panel is Cubical type integrated which is constructed from 14SWG CRCA steel sheet suitable for indoor installation. Dust Vermin free floor mounted with IP42 Protection. Powder coated as per IS/RAL 7032 of 7035 shade. Floor mounted panel with non compartmentalised arrangement and powder coated colour for back side covers & frame RAL7035 and Base Frame RAL 7021. Panel is suitable for 4KW Fan Drive motor. MCCB 25A, TP, 36KA, Microprocesser Based suitable contactors, relays, Push Button ON/OFF/ Reset), Indication Lamp Start/STOP/ Trip etc. Panel has necessary relays & contractor interlocks Variable Frequency Drive (VFD) 4 KW Rating with IP20 Protection Panel mounting type. To reduce Harmonics VFD has DC link Reactor to comply to standard IEC 61000-3-2 or IEC 61000-3-12 For EMI/ RFI Noise reduction VFD has EMC Filter complying to IEC 61000-3 Category C-2. Minimum 1 PID control to control Fan speed based on Velocity or Pressure or Temperature Feedback) VFD is equipped with one analog input for speed reference or process parameter (Velocity or presseure or temperature feedback) VFD is equipped with 1 Analogue Output for speed feedback. VFD is equipped with 4 Digital Inputs for Run Command, Emergency Stop, External interlock (Door open, fire alarm etc) VFD is equipped with 2 Relay outputs (Digital Outputs) for run / Trip feedback. VFD make Danfoss/ Siemens / ABB or equivalent reputed make.

Return Air Sensor with mounting arrangement : Loacation : AHU Filter-------Make Precision T&RH Sensor with SS304 Construction, IP67 Sensor Module with Tefflon coating, IP65 Die Cast Alumnium Head, 4-20 mA Output Signal for Temperature as well as %RH. Temperature Range 0-50 degree celcius & %RH Range 0-100% RH. For - Return Air 1 and Inside Room----------------1x Total quantity-------------02 Nos. -DP Switch for 10 micron filter bank-------Siemens make DP Switch for filter clog Feedback for Pre-filter & Post filter Quantity----------------01 Nos -DP Switch for 3 micron filter bank-------Siemens make DP Switch for filter clog Feedback for Pre-filter & Post filter Quantity------------01 Nos Note : Cost for control cable for interconncetion are deemed to be included in scope of work as per manufacturer instructions.

Supply, installing, testing & commssioning of VFD Panel inclusive of the following :- The Panel is Cubical type integrated which is constructed from 14SWG CRCA steel sheet suitable for indoor installation. Dust Vermin free floor mounted with IP42 Protection. Powder coated as per IS/RAL 7032 of 7035 shade. Floor mounted panel with non compartmentalised arrangement and powder coated colour for back side covers & frame RAL7035 and Base Frame RAL 7021. Panel is suitable for 5.5 KW Fan Drive motor. MCCB 25A, TP, 36KA, Microprocesser Based suitable contactors, relays, Push Button ON/OFF/ Reset), Indication Lamp Start/STOP/ Trip etc. Panel has necessary relays & contractor interlocks Variable Frequency Drive (VFD) 5.5 KW Rating with IP20 Protection Panel mounting type. To reduce Harmonics VFD has DC link Reactor to comply to standard IEC 61000-3-2 or IEC 61000-3-12 For EMI/ RFI Noise reduction VFD has EMC Filter complying to IEC 61000-3 Category C-2. Minimum 1 PID control to control Fan speed based on Velocity or Pressure or Temperature Feedback) VFD is equipped with one analog input for speed reference are process parameter (Velocity or presseure or temperature feedback) VFD is equipped with 1 Analogue Output for speed feedback. VFD is equipped with 4 Digital Inputs for Run Command, Emergency Stop, External interlock (Door open, fire alarm etc) VFD is equipped with 2 Relay outputs (Digital Outputs) for run / Trip feedback. VFD make Danfoss/ Siemens / ABB or equivalent reputed make.

Return Air Sensor with mounting arrangement : Loacation : AHU Filter-------Make Precision T&RH Sensor with SS304 Construction, IP67 Sensor Module with Tefflon coating, IP65 Die Cast Alumnium Head, 4-20 mA Output Signal for Temperature as well as %RH. Temperature Range 0-50 degree celcius & %RH Range 0-100% RH. For - Return Air 1 and Inside Room----------------1x Total quantity-------------02 Nos. -DP Switch for 10 micron filter bank-------Siemens make DP Switch for filter clog Feedback for Pre-filter & Post filter Quantity----------------01 Nos -DP Switch for 3 micron filter bank-------Siemens make DP Switch for filter clog Feedback for Pre-filter & Post filter Quantity------------01 Nos Note : Cost for control cable for interconncetion are deemed to be included in scope of work as per manufacturer instructions.

Supplying, fixing, testing and commissioning of condenser water pipes of following nominal bore size diameters, MS C Class, and materials along with necessary clamps, vibration isolators, and fitting such as bends, tees etc. but excluding valves, strainer and gauges etc adequately supported on rigid supports etc as per specification and as required. Note:-The Pipes size 150mm & below shall be M.S. 'C' class as per IS : 1239 and pipes size . The welded pipe shall be pained with 2 coats of green coloured enamel paint.

Supplying, fixing, testing and commissioning of condenser water pipes of 80 mm nominal bore size diameters to be laid in trench (Buried) instead of clamps, supporting frame, etc. The scope shall include excavation, re-filling of trench after completion of pipe laying, sand bed shall be prepaired by laying at 50mm thick sand layer in trench, Standard brick shall be placed over sand bed, then the pipes shall be layed over brick, The top of pipe shall be atleast 800mm below ground. Note :- The pipe shall be wrappped with two layer of tarfelt for the longer life of pipe

Supplying , fixing , testing and commissioning of following valves, gauges and strainers for condenser water circulation as per specifications.

Supplying, fixing, testing and commissioning of following diameter valves (Complete with Flanges integral or welded, fittings, Nuts, Bolts & Gaskets (PN-16 Rating), strainers(Complete with flanges integral or welded, fittings, Nuts, Bolts & Gaskets (PN-16 Rating), gauges etc for condenser water circulation as per specifications. --Butterfly Valve with CI body SS disc nitrile sheet & O ring, Complete with fittings, Nuts, Bolts & Gaskets. Make : Audco, Advance, Castle, Siemens

80 mm Ø Butterfly Valve

65 mm Ø Butterfly Valve

Supplying, fixing, testing and commissioning of following diameter valves (Complete with Flanges integral or welded, fittings, Nuts, Bolts & Gaskets (PN-16 Rating), strainers(Complete with flanges integral or welded, fittings, Nuts, Bolts & Gaskets (PN-16 Rating), gauges etc for condenser water circulation as per specifications. Motorised Butterfly Valve with manual override control/wheel(Complete with fittings, Nuts, Bolts & Gaskets , wafer type construction .The actuator shall be IP 67 rated.

Flexible connection complete with PN16 - 65mmØ

Supplying, fixing, testing and commissioning of following diameter valves (Complete with Flanges integral or welded, fittings, Nuts, Bolts & Gaskets (PN-16 Rating), gauges etc for condenser water circulation system

Supply installation testing and commissioning of following diameter balancing valves (complete with Flanges integral or welded, fittings. Nuts, bolts & gaskets (PN-16 rating), EPDM coated disc with built in measuring facility strainers (complete with flanges integral or welded, fittings, nuts & bolts and gaskets (PN-16 rating), gauges etc for condenser water circulation as per specification. (Fully automatic balancing valve) - 80 mm Ø Make :- Siemens/Honeywel or as recommanded by OEM of Main Plant.

Supply installation testing and commissioning of following diameter balancing valves (complete with Flanges integral or welded, fittings. Nuts, bolts & gaskets (PN-16 rating), EPDM coated disc with built in measuring facility strainers (complete with flanges integral or welded, fittings, nuts & bolts and gaskets (PN-16 rating), gauges etc for condenser water circulation as per specification. (Fully automatic balancing valve) - 65 mm Ø Make :- Siemens/Honeywel or as recommanded by OEM of Main Plant.

Supply , installation , testing and commissioning of water pressure gauge (100 mm Ø) bourdon type with brass ball valve of 3/8" Ø and SS tubing, socket. Range (0-50) / (0-100) as required

Supply , installation , testing and commissioning of Mercury in glass industrial thermometer in SS-304 casing with 0.5 C least count, range 0-50 C. Brass oil filled thermowell of 1/2" size

Supply , installation , testing and commissioning of Y strainer - Dia 65mm

Supply & fabrication of MS structure like Angle, channel, I section for make up tank foundation & condenser water line supports. The MS shall be painted with two coats of red oxide primer & finally painted with Balck enamel paint.

Supplying, laying/ fixing, testing and commissioning of following nominal sizes of chilled water piping plumbing inside the building (with necessary clamps, vibration isolators and fittings but excluding valves, strainers, gauges etc.) duly insulated with fire retardant quality expanded polystrene moulded pipe section of density 20 kg/cu.m after a thick coat of cold setting adhesive (CPRX compound) wrapping with 500g polythene faced hessain and finally applying 0.63mm aluminium sheet cladding complete with type3 , grade 1 roofing feltstrip(as per IS:1322 as amended up to date) at joints repairing of damage to building etc. as per specifications and as required complete in all respect. Note:-(i) The Pipes of sizes 150mm & below shall be M.S. ‘C’ class as per IS : 1239 and pipes size above 150mm shall be welded black steel pipe heavy class as per IS: 3589, from minimum 6.35mm thick M.S. Sheet for pipes upto 350 mm dia. and from minimum 7mm thick MS sheet for pipes of 400 mm dia and above. (ii) For pipes up to 125mm dia. the thickness of insulation shall be 50mm and for pipes above 125mm dia. the thickness of insulation shall be 75mm

80 mm Dia

65 mm Dia

Supplying, laying/ fixing, testing and commissioning of following nominal sizes of chilled water piping plumbing out side the building to be laid in trench (Buried) instead of clamps, supporting frame, etc. The scope shall include excavation, re-filling of trench after completion of pipe laying, sand bed shall be prepared by laying at 50mm thick sand layer in trench, Standard brick shall be placed over sand bed, then the pipes shall be laid over brick, Chilled water piping insulation of aluminium foil 0.63mm aluminium sheet faced rigid polyurethane foam pipe section with the facing fused to the insulation material. The finished surface shall be applied with polythene sheet and applied with two layer of sand cement plaster having 6mm thickness each. The top of insulated pipe shall be at least 800mm below ground.

80 mm Dia

65 mm Dia

INSULATED VALVES (a) Supplying, fixing, testing and commissioning of following dia valves, strainers, gauge in the chilled water plumbing duly insulated to the same specifications at factory/ site as the connected piping and adequately supported as per specifications.

(b) Supply , instalation , testing and commissioning of C.I. Butterfly valve (PN-16) with CI body SS disc, with integral or separate welded Flange /wafer type construction with EPDM coated disc with long pitch with protected out pipe insulation and PN 16 pressure rating for chilled circulation as specified.

(a) 80 mm Dia

(b) 65 mm Dia

Supply , installation , testing and commissioning of CI Flanged Balancing valve (PN-16) with Flanges, EPDM coated disc with built-in measuring facility as per Specification .

Fully automatic balancing valve 65 mm Ø

Supply , installation , testing and commissioning of Plug valves - 25mm diameter Plug valves in dirt legs

Supply , installation , testing and commissioning of Flexible connection complete -

80 mm Dia

Supply , installation , testing and commissioning of water pressure gauge (100 mm Ø) bourdon type with brass ball valve of 3/8" Ø and SS tubing, socket. Range (0-50) / (0-100) as required.

Supply , instalation , testing and commissioning of Mercury in glass industrial thermometer in SS-304 casing with 0.50°C least count, range 0-50°C. Brass oil filled thermowell of 1/2" size

Supply, installation , testing and commissioning of 20mm Automatic Air Vent valve suitable to purge out the trapped air in the water pipe line complete as required.

Supplying, fixing, testing and commissioning of medium class G.I. condensate drain pipes on wall/floor/roof of following size/diameters duly insulated with 9 mm thick closed cell nitrile rubber insulation in the form of pre-formed pipe sections and along with necessary clamps, fittings such as bends, tees etc. adequately supported as per specifications and as required. (a) 50 mm Ø

Expansion Tank

Supply, Installation, Testing and commissioning of INSULATED PRESSURISED CLOSED WATER EXPANSION TANK suitable for total volume of water in chilled/hot water circuit along with necessary accessories such as) with Pressure Transmitter and interconnecting Pipe & Isolating Valve complete with piping connections, safety relief valve, drain valve, pressure gauge, automatic air purging arrangement, etc. The tank shall be pre-charged. Expansion tank Shall be with replaceable heavy duty butyl rubber bladder. The tank shall have 50 MM system connection and 20 mm drain and charging valve connection to facilitate the on site charging of nitrogen in the tank. The tank shall be fitted with lifting rings and a floor mounting skirt for vertical installation. The tank must be constructed in accordance with IS-STANDARD 2825-1969 suitable for 125 PSI working pressure. The complete system shall be sourced from single manufacturer and supplied and installed with all accessories and safety fixtures required for proper functioning of the complete hydronic system. The tank shall be duly painted in approved colour shall be complete with pressure switches and power distribution and control panel IP55 Control Panel, Pressure Transmitter, interconnecting piping & wiring.

(Tank capacity 300 Ltrs). Chilled water closed vessel pressurized expansion tank as described above shall be duly insulated with 50 mm thick EPS insulating material and cladded with aluminium Sheet (20G) Make :[M/S Armstrong, , Anergy Instruments PVt ltd Faridabad

Supplying, laying/ fixing, testing and commissioning of following nominal sizes of chilled water piping plumbing inside the building (with necessary clamps, vibration isolators and fittings but excluding valves, strainers, gauges etc.) duly insulated with fire retardant quality expanded polystrene moulded pipe section of density 20 kg/cu.m after a thick coat of cold setting adhesive (CPRX compound) wrapping with 500g polythene faced hessain and finally applying 0.63mm aluminium sheet cladding complete with type3 , grade 1 roofing feltstrip(as per IS:1322 as amended up to date) at joints repairing of damage to building etc. as per specifications and as required complete in all respect.

Note:- (i) The Pipes of sizes 150mm & below shall be M.S. ‘C’ class as per IS : 1239 and pipes size above 150mm shall be welded black steel pipe heavy class as per IS: 3589, from minimum 6.35mm thick M.S. Sheet for pipes upto 350 mm dia. and from minimum 7mm thick MS sheet for pipes of 400 mm dia and above. (ii) For pipes up to 125mm dia. the thickness of insulation shall be 50mm and for pipes above 125mm dia. the thickness of insulation shall be 75mm

Supply, Installation, Testing Balancing & Commissioning of G.S.S rectangular/round ducting as per IS 655 - 2006 complete with gaskets, elbows, splitters, vanes, supports adjustable dampers, etc. as per approved drawingsas required for dehumidified air distribution of following thickness as per approved working drawings, specifications and requirement .(Factory Fabricated/Site Manufactured).The price shall include necessary scaffolding required for working at required height. Contractor should also include the cost of core cut to be made in wall for Fresh air lovers and Fresh Air Duct for AHU's . Hot dipped Galvanised with 120GSM Zinc coating

1 mm thick Sheet

0.80 mm thick sheet

0.63 mm thick sheet

Supply & Installation of Thermal Insulation of thicknes 19 mm on Ducts not exposed to sunlight using Closed Cell Class O Nitrile Rubber Elastomeric Insulation of Density 40 - 55 Kg/m3 , Thermal Conductivity of 0.037 W/mk at 200 Celcius Mean Temp. and μ≥7000 (without any additional vapour barrier) and with factory laminated aluminium foil of minimum 60 Microns thickness having weight of 193 gsm as per EN ISO 2286-2, tensile strength shall be 90N/15mm as per EN ISO 527-3 with elongation > 10% as per EN ISO 527-3; to be applied on Ducts using manufacturer's recommended Rubber based Adhesive in a blend of Solvents.

Supply and Application of Acoustic Insulation of thickness 15 mm Inside the Duct with Engineered Nitrile Rubber open cell foam with Density 140 - 180 Kg/m3 passing Class 1 Fire Performance test as per BS 476 Part 7, Air Erosion test for 10,000 fpm air velocity as per ASTM C 1071-05 and with built-in antimicrobial protection. The material should pass Fungi Resistance Test as per DIN EN ISO 846 Method A and Bacterial Resistance Test as per DIN EN ISO 846 Method C; to be applied using manufacturer's recommended Rubber based Adhesive in a blend of solvents.

Supplying, Fixing,testing and commissioning of fire dampers in supply air duct/ main branch and return air path as and where required of required sizes i/c control wiring,the damper shall be motorized and spring return so as to close the damper in the event of power failure automatically and open the same in case of power being restored. The spring return action shall be inbuilt mechanism and not externally mounted. The damper shall also be closed in the event of fire signal complete as required.

MAIN LT PANEL (HVAC) (a) Supplying, installation, testing & commissioning of cubical type wall / floor mounted Distribution Panel suitable for 415 V, 3 Phase, 4Wire 50 Hz AC supply system fabricated in compartmentalized design from CRCA sheet steel of 2mm thick for frame work and covers, 3 mm thick for gland plates i/c cleaning & finishing complete with 7 tank process for powder coating in approved shade, having Suitable Amp capacity extensible type FP Aluminium Alloy bus bars of high conductivity, SMC bus bar supports, with short circuit withstand capacity of 35kA for I Sec. with entire panel shall have a common Alu earth bus of size 32x6mm at the rear with 2 Nos earth stud, solid connections from main bus bar to switch gears with required size of Al. bus bars and control wiring with 2.5 sq.mm. PVC insulated FRLS copper conductor Single Core cable, cable alleys, cable gland plates in two half, i/c additional NO/NC contacts in all outgoing starters for automatic operation through BMS and providing & fixing following switch gears:- (b) Each MCCB shall be with the following. (i) Extended Rotary Operating Handle, Phase Spreader links and Phase barriers (ii) 1 Set - Digital Ammeter with in built ASS, metering C.T.s "CAST RESIN" type, 15VA, and accuracy class-1of 800/5A for measuring current in each phase (iii) 1 Set - Digital Voltmeter with in built VSS, with 2Amp. Back up MCB (iv) 1 Set - 3 Nos. Phase indication LED lamps with 2Amp back up MCB, Breaker 'ON/OFF' indicating light with 2A MCB, test terminal block set, circuits as per standard practice, auxiliary contacts for positive interlocking of the breakers as required. - 2 Set (v) 1 No. Suitable energy meter (vi) Each Panel will have Junction box with holes punched for connecting it to existing panel through Cable. (c) Incomer - (A) 1 No. - 400 Amps Four Pole, 36 KA (ICU=ICS) for 1 sec, MCCB with Microprocessor release with O/C, S/C & E/F protection release, each MCCB each shall be with following:- (i) Extended Rotary Operating Handle, Phase Spreader links and Phase barriers (ii) Electrical & mechanical interlocking of above MCCBs so that only one MCCB can be switch on at one time. (iii) 1 Set - Digital Ammeter with in built ASS, metering C.T.s "CAST RESIN" type, 15VA, and accuracy class-1of 630/5A for measuring current in each phase (iv) 1 Set - Digital Voltmeter with in built VSS, with 2Amp. Back up MCB

(v) 1 Set - 3 Nos. Phase indication LED lamps with 2Amp back up MCB, Breaker 'ON/OFF' indicating light with 2A MCB, test terminal block set, circuits as per standard practice, auxiliary contacts for positive interlocking of the breakers as required. - 2 Set (vi) Digital multi function energy meter 96x96 mm (vii) Each Panel will have Junction box with holes punched for connecting it to existing panel through Cable. (B) Bus Bar :-TPN aluminium extensible type main bus bars of minimum of 600 A capacity (As per capacity of corresponding incoming / Bus couplers) , and auxiliary bus bars of suitable capacity with heat shrunk coloured sleeves and i/c SMC bus bars supports at required intervals complete for cross section, size supports & their spacing etc. for withstanding fault level of 35kA for 1 Sec. (C) Outgoings:-Supplying and fixing following outgoing MCCB / MCB complete connection, inter-connection etc. with suitable size of solid links / wires (2A backup SP MCB) complete as required. (i) 3 Nos- 100A 25 KA TP MCCB with Microprocessor release. (ii) 6 Nos. - 30 A 25 KA TP MCCB & starter and single phase preventor ( For pump) (iii) 1 Nos. - 16 A 25 KA TP MCCB & single phase preventor (Cooling Tower) (iv) 2 Nos. - 25 A 25 KA TPA MCB & single phase preventor (For AHU) (v) Each MCCBs shall be with following accessories Note :- (i)MCCB for over current & shortcircuit protection and breaking capacity of 25 kA,at 433V (Ics=ku for 1 second) (ii)Extended Type front door operating handle, phase spreaders and phase barriers. (iii) 1 set - Breaker 'ON/OFF' indicating light with 2A MCB, test terminal block set, circuits as per standard practice, auxiliary contacts as required.

LT Cables Supply & Laying/ fixing of following size XLPE insulated and PVC sheathed Copper conductor unarmoured cable as required of 1.1 KV grade complete as required.(ISI Marked) ( in ground/in pipe/in duct/on surface/ on cable tray)

4 Core x 16 sq.mm. ( Heat Pump)

4 Core x 10 sq.mm (Pump and cooling tower)

4 Core x 6 sq.mm. (AHU)

2 single core x 16 sq.mm. ( Heat Pump)

2 Single core x 10 sq.mm (Pump and cooling tower)

2 Single core x 6 sq.mm. (AHU)

2 Single core x 1.5 sq.mm. (AHU)

Supplying and installing following size of perforated painted with powder coating M.S. cable trays with perforation not more than 17.5%, in convenient sections, joined with connectors, suspended from the ceiling with M.S. suspenders including bolts & nuts, painting suspenders etc. as required

100 mm width X 50 mm depth X 1.6 mm thickness

150 mm width X 50 mm depth X 1.6 mm thickness

Disconnecting, dismantling of existing BER AC Plant of capacity 3x25 TR including all acssories such as condensing unit complete with compressor motor, Air Handling Unit with cooling coil, fan & filters, Cooling tower with CT Fan, Old MS Piping of condensor & chilled water line complete with valve, main control panel, LT panel excluding Old ducting and other connected items all as specified and directed

Taking down carefully copper/aluminium point wiring (light, fan, socket or power) complete including fitting and fixture and such as as switches, sockets ceiling rose,pendent holders,regulators,light fittings any type removing materials to store in safe custody or for credite etc, and making good the disturbed surface of walls and floors etc as directed.

M&L for point wiring with two single core PVC insulated & PVC unsheathed stranded copper conductor cable of size 1.5 Sqmm 1100 volts grade in and including making good the distrubed surfaces of wall with clour washing/ distemparing the surface to match the existing including PVC surface/ concealed conduict of size 20 to 25 mm with all accessories and one single core PVC insulated & PVC unsheathed solid copper cable of size 1.5 Sqmm 1100 Volts grade as earth continuity conductor connected to common earth dolly, switch board complete with MS rectangular type box heavy duty for mounting the switch socket etc complete as specified for One light/Fan point controlled by one 5 Amps switch one way complete. Make of Cable :- Havells/ Plaza/Finolex/Polycab. Make of PVC conduit :- AKG/ Plaza/ Jindal / Finolex

M&L for flame proof point wiring with two single core FRLS PVC insulated & PVC unsheathed stranded copper conductor cable of size 1.5 Sqmm 1100 volts grade in and including making good the distrubed surfaces of wall with colour washing/ distemparing the surface to match the existing including stove enamelled steel concealed conduit of size 20 to 25 mm with all accessories and one single core PVC insulated & PVC unsheathed solid copper cable of size 1.5 Sqmm 1100 Volts grade as earth continuity conductor connected to common earth dolly, switch board complete with MS rectangular type box heavy duty for mounting the switch socket etc complete as specified for One light/Fan point controlled by one 5 Amps switch one way complete.

S&F switch piano flush type 5 Amp. AC, 240 Volts one way all as directed. Make :- Anchor / Havells/ Legrand

S&F Flame proof weather proof switch rotary type with terminal box 16 Amps, 250 Volts, in aluminium die cast alloy LM6 construction of Gas Gr 11A, 11B certified by CIMFR Dhanbad, CCOE Nagpur including fixing arrangements all as specified and all as directed. Cat No. SSPL/RI/140 of make Shyam or eqvt in Sudhir/Flexpro

S&F square recessed / surface/suspended mounting LED ceiling light with extruded aluminium housing and milky diffuser of 36 W 2'X 2' panel LED driver 240 V ,50 Hz complete all as specified & approved by EIC. Make :- CG/ C&S /Havells

S&F decorative box type fitting with blue colour end cap for LED tube 16 to 22 watt luminaire for 230 volt AC including LED tube 16 watt to 22 watt complete all as specified & approved by EIC. Make- CG/ C&S /Havells

S&F LED tube light fitting. 2x18 /20 W flameproof fluorescent fixture complete all as specified & approved by EIC.

Dismantling boarding any description fixed any with nails complete all as specified and directed

S&F anodised aluminium snap grid fraame work 605 mm x 605mm for flase ceiling all as specified and directed

S&F Hangers 6mm dia GI tube 1200mm length adjusting leve fixed to roof slab by means of ceiling made cut GI flat 40 x 3mm size 60mm long and expansion holder fasteners 12.5mm dia 40mm long complete all as specified and directed

M&L providding and fixing 600 mm x 600 mm Gypsum board tile 12m thick in ceiling fixed as per manufacturers instruction complete all as specified and directed

PART-II (OPERATION AND MAINTENANCE WORK FOR THE AC PLANT AFTER TESTING AND COMMISSIONING AND SUCCESSFULLY COMPLETION OF PHASE I )

MANNING & OPERATION OF AC PLANTS AT AF STN BKT :- Outsourcing of services for comprehansive operation of scroll type modular water cooled heat pump AC plant of capacity of 50 TR in round 'o' clock basis in three shift by experienced and well acquainted persons (skilled) with the operation of Electrical LT Panel, switches and DG Sets of 250 KVA at 2232 Sqn by Refg Mech and also carrying out works as mentioned below :- (a) Maintaining duty log sheet and checking cooling of room temperature on operation of AC Plant. (b) Maintaining running records of AC Plant (c) Daily maintenance of AC Plant, LT Panel, swiches etc by cleaning, greasing, tightening of nuts & bolts/lugs and checking of various meters for measurement of current voltage, pressure / temperature, flow (water / air) etc including recording of these level in log sheet and also recording of any unwarranted sound, sparking and leakage etc. (d) Carrying out of any duties in addition to above as assigned by the EIC within BKT Campus. Note :- After opening of Financial bid , it is found out that quoted rates in respect of comprehansive operation of scroll type modular water cooled heat pump AC plant of capacity of 50 TR are below the existing minimum labour wages rates of skilled labour as prescribed by the Government of India Ministry of Labour & Employment Office of the Chief Labour Commissioner(C) letter No. F.No. 1/26(3)/2021-LS-II dated 28 Oct 2021 / State Government /Local body whichever is higher including all statutory provisions such as EPF, ESI, GST, labour welfare cess etc as applicable on the bid submission end date, then Accepting Officer at his sole discretion , has the right to reject the quoated bid and the same shall be treated as "Non-Bonafide". In such case the lowest tender shall be determined by lowest amount amongst valid bonafide bids for acceptance. However contractor is also responsible to pay increased minimum wages, even as notified during currency of the work by Governement of India/State Government /Local body whichever is higher without any extra cost to the Government.

M/s R.V. Constructions

BRITE INDUSTRIES

Pneumatic Engineers Pvt. Ltd.

Parksons Engineering Company Pvt Ltd

M/s Krishna Refrigeration