COMPREHENSIVE MAINTENANCE OF AC PLANT AT DEFI TECH BLDG, MOTHER AND CHILD CARE BLDG AND COMMAND HOSPITAL (EC) UNDER GE(A) KOLKATA

Defi Tech Bldg Central AC Plant Part-I (Make : Kirloskar) Comprehensive maintenance of complete central AC plant 3 x 200 TR including chillers, pumps, motors cooling towers, AHUs, Cooling tower pipe line, chilled water pipeline, air duct, valves, LT panel and its accessories complete,to run the plant with full efficiency without break down including saturday, sunday and holidays and mechanic with adequate experience should be available to rectify in case any fault observed and all as specified and directed by Engineer-in-Charge Note:-In this quated rate following work included in quated rate. (a) Defi Tech AC Plant (i) Screw type Chiller unit 3 x 200 TR alongwith compressor, evaporator, condensor including allied equipments and sub-assemblies (02 working + 01 standby) (ii) LT control panel with accessories (iii) 3 x Condensor Water Pump (02 working + 01 standby) (iv) 3 x Chiller Water Pump (02 working + 01 standby) (v) 3 x Cooling tower (02 working + 01 standby) alongwith operating valves and pipe line (vi) Cooling tower water tanks (vii) Chilled Water pipe line throughout CH (EC) Main Hospital Building (G+5) (b) CH (EC) Defi Tech building (i) 15 x Air Handlig Units (ii) Air Duct opening grills (iii) 15 Treated frush air unit

Supply only following spares for AC Plant of 3 x 200 TR . Make - Kirloskar.

Repair & Maintenance of upto 1.0 HP gear Motor suitable for TFA

Re- winding of motor of capacity 7.5 HP

Re- winding of motor of capacity 10 HP

Re- winding of motor of capacity 12.5 HP

Re winding of motor of capacity 20 HP

Re- winding of motor of capacity 25 HP

Supply and fixing of upto 3.0 HP gear operating Motor suitable for AHU Make : Crompton or equivalent

Supply and fixing of upto 5.0 HP gear operating Motor suitable for AHU Make : Crompton or equivalent

Supply and fixing of upto 7.5 HP gear operating Motor suitable for AHU Make : Crompton or equivalent

Supply and fixing of upto 10.0 HP gear operating Motor suitable for AHU Make : Crompton or equivalent

Supply and fixing of VLT in screw compressor suitable for 200 TR AC Plant 15KW / 20 HP Make : Danfoss or equivalent

Supply and fixing of PCO5 plus medium board controller

Supply and fixing of Sensor Temp NTCO60WPOO K-SMART

Supply and fixing of Cable - 5M for PR Transd. K-Smart

Supply and fixing of Crank case Heater

Supply and fixing of VPD Winding protection

Supply and fixing of VPD Voltage Protection

Supply and fixing of EVD Evalution Lan Protocol

Supply and fixing of Expansion K-Smart Controller

Supply and fixing of V-Belt with following size - A-69, A-56, A-50, A-42, A-59, A-39, A-60, A-79

Supply and fixing of Contractor 3TF47

Supply and fixing of Contractor 3TF51

Supply and fixing of DO (Drier Core)

Supply and fixing of MCCB, 100 Amp, 4 Pole

Material and labour for HEPA filter of EU 13 normal flow, media construction microscopic fiber glass + aluminium sepeartor of 99.99% efficiency, particles to be filtered down to 0.3 mircon, initial pressure drop 25mm of water gauge, final pressure drop 60mm of water gauge including dismantling of existing HEPA filter size 650 x 243 x 305 MM. Make : Priyanka Engineering or equivalent

Supply and fixing of AHU air filters .5 micron suitable for AHU size 600 x 600 x 150 MM. Make : Priyanka Engineering or equivalent

Supply and fixing of AHU pre Air filters .5 micron suitable for AHU size 610 x 610 x 48 MM. Make : Priyanka Engineering or equivalent

Supply and fixing of Pilow type filter suitable for TFA 0.5 micron size 590 x 285 x 20MM. Make : Priyanka Engineering or equivalent

Supply and fixing of Solonoid Valve

Supply and fixing of Pressuer Transducer 10. BAR

Supply and fixing of valve Electronic Expention, Mdel - VPF 100C

Supply and fixing of only Spiral target valve

Supply and fixing of only cooling tower fills block size 600 300 MM (12 Nos of fills in one block)

Supply and fixing of only Spiral Eliminator block size 600 x 140 MM (12 Nos of Spiral Eliminator in one block)

Supply and fixing of Float Valve

Supply and fixing of MCX 31 Contactor 82.5A

Supply and fixing of MCX 42 Contactor 315 A

Supply and fixing of ON Load change over 400 A

Supply and fixing of MN 5 over load 30 to 50 A

Supply and fixing of Compressor Oil Make: Grade RL or equivalent

Supply and fixing of Compressor Oil Filter

Supply and fixing of Operating Sensors for Screw compressor 200 TR

Supply & Testing nitrogen for leak testing

Supply and charging refrigerant 134A Make: Mafron

Supply and fixing of T Lan serial card

Supply and fixing of Coil and Connector Kit 230V.

Supply and fixing of Cable for Expansion valve EX8. 3 MT.

Supply and fixing of Transformer 100/0.2A with AC to DC.

Supply and fixing of PGD 12X32 Display.

Supply and fixing of Flow Switch 1-inch NPT, PPS.

Supply and fixing of Chiller line Butter fly valve 125 NBXPN16.

Supply and fixing of Actuator valve with device

Supply and fixing of in repair Carbon water seel for condenssor pump

M& L for servicing of cooling Tower of capacity 225/100 TR, Removing of the fills block and checking and cleaning of cooling tower structure, fan, motor, gearbox, drift eliminators, fill, nozzles, louvers, electrical connections and recording of operating parameters cleaning & Descaling of Cooling Tower Basin - Draining of water, removal of sludge, algae, scale and debris from basin. CLeaning by pressure washing / chemical treatment as required. CLeaning of Fill Media & Drift Eliminators - Dismantling (if required), cleaning with high pressure water / chemical treatment to remove scaling, dirt and algae and re-installation. Mechanical Maintenance - Lubrication of fan & motor bearings, inspection of fan blades, tightening of hub bolts, checking & replacement of gearbox pol, alignment of drive shaft / couplings, adjustment of belts / pulleys. Water DIstribution System Servicing - Cleaning of strainers, nozzles, make-up float valve, bleed-off line and ensuring proper water circulation. Chemical Treatment - Application of biocide / antiscalant to control scaling, corrosion and biological growth (including legionells prevention)

Descaling and cleaning of condensor (one Chiller contains two Nos condenser) by using recommended cleaning solution followed by mechanical cleaning of condensor and evaporators tubes including replacement of nut bolts and gasket etc in every 6 months or as and when ordered by Engineer-in- Charge.

Descaling and cleaning of AHU coils from outside and cooling tubes from inside by flowing suitable chemical in the tubes for removing all foreign material deposited in the coil and tubes in every 6 months or as and when ordered by Engineer-in-Charge.

Servicing of Treated Fresh Air unit .

Supply & fixing in repair canvas cloth suitable for AHU & TFA including taking down old canvas

Material and labour for painting with one coat of Epoxy zinc phosphate primer and two coats of PU Full Glass enamel Paint including preparation old/ new surface of steel of any description all as specifierd and as directed.

Supply and fixing of following spares for AC Plant of 3 x 100 TR . Make - DAIKIN.

Supply and fixing of cooling tower fills block (12 Nos of fills in one block)

Supply and fixing of Spiral Eliminator block (12 Nos of Eliminator in one block)

Supply and fixing of Spiral target valve

Supply and fixing of Float Valve for existing size of cooling tower

Supply and fixing of PCB Board with display ( For AHU )

Supply and fixing of V-Belt with following size- A-69,A-56,A-56,A-50,A-42,A59,A-39,A-60,A-79, B-69 .

Supply and fixing of Link belt for TFA

Supply and fixing of Contractor MNX A1

Supply and fixing of Contractor MNX A2

Supply and fixing of MCCB , 100 Amp ,4 Pole

Supply and fixing of MCCB 63 Amp 4 Pole

Supply and fixing of MCB 20 Amp, 3 Ph

Supply and fixing of SS cyphon with bib cock guage

Supply and fixing of thermometer

Supply and fixing of Pre Air Filter 5 micron suitable for AHU size 600 x 610 x 50 MM.

Supply and fixing of Fine Filter 5 micron suitable for AHU size 600 x 610 x 150 MM.

Supply and fixing of Solonoid Valve Kit

Supply and fixing of Electronic Expention valve E6U

Material and labour for HEPA filter of EU 13 normal flow, media construction microscopic fiber glass + aluminium separator of 99.99% efficiency, particals to be filtered down to 0.3 mircon, initial pressure drop 25mm of water gauge, final pressure drop 60mm of water guage including dismentaling of existing old HEPA filter size 610 x 200 x 300 MM. Make: Priyanka Engineering or equivalent

Material and labour for dismantling of old butterfly valves and fixing of new Butterfly valve all as specified and as directed suitable for the following sizes of pipe: (a) 40/ 50 mm bore

(b) 80 mm bore

(c)100 mm bore

(d) 150 mm bore

(e) 200 mm bore

Supply and fixing of MN 5 over load 30to 50 A

Supply and fixing of Operating Sensors for Screw compressor 100 TR

Supply and fixing of refrigerant 134A Make : Mafron

Supply and fixing of PCB Display Board for Screw compressor 100 TR

Descaling and cleaning of condensor and evaporator by using DAIKIN recommended cleaning solution followed by mechanical cleaning of condensor and evaporators tubes including replacement of nut bolts and gasket etc in every 6 months or as and when ordered by Engineer-in- Charge.

Descaling and cleaning of AHU coils from outside and cooling tubes from inside by flowing suitable chemical in the tubes for removing all foreign material deposited in the coil and tubes in every 3 months or as and when ordered by Engineer-in-Charge.

PIPING ACCESSORIES AIR VENT VALVE M & L for PN 1.6 rated air vent valve having brass body, cover, adopter, disc assembly & cap, stainless steel strainer, plastic float and 20 mm screwed threaded ends suitable for maximum operating temperature 100 °C installed on all high points in the water piping system to automatically remove the trapped air with necessary accessories all complete as specified and directed by the engineer-in-charge.

TEMPERATURE GAUGE S & F of 6" dual scale (°F / °C), lower mount (radial), bimetal thermometer 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- 60 °C with necessary accessories all complete as specified and directed by the engineer-in-charge.

PRESSURE GAUGE S & F of 4" bourdon tube 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 with necessary accessories all complete as specified and directed by the engineer-in-charge.

Y'-TYPE STRAINER M & L for PN 1.6 rated 100 mm NB 'Y'- type strainer, certified for 300 psig Hyd. body test pressure and 150 psig working test pressure, having cast iron (CI) Gr. FG 200 body & cover conforming to IS 210: 2009 , AISI304 plug, AISI304 stainless steel screen trim having 1.2 mm perforation, bolted cover, compressed asbestos fiber gasket, flanges as per BS 10 Table F undrilled, complete with necessary accessories all as specified and directed by the engineer-in-charge.

S & F of 25 mm thick flexible closed-cell elastomeric thermal insulation (in tubular form) made of elastomeric foam based on synthetic rubber (NBR / PVC), tested for maximum service temperature 100 ºC as per ASTM C534 & minimum service temperature -50 ºC as per ASTM C534, thermal conductivity λ ≤ 0.037 W/mK at mean temperature θm = 24 ºC as per ASTM C518 / C177, ASTM C335, water absorption by volume ≤ 0.2% as per ASTM C 209 / C1763, flame spread index (FSI) & smoke development index (SDI) 25/50 as per ASTM E84, flammability HB, V-0 as per UL 94, fungi resistance as per ASTM G21/C1338, mould growth resistance as per ASTM E2180-18 / UL 181 and ozone resistance as per ASTM D 1149-18 along with self pre-covered self-adhering, UV treated glass cloth of thickness 0.18 mm / 200 GSM adhesives and other necessary accessories complete all as specified and directed by the engineer-in-charge.

CHILLED WATER PIPING MS CLASS- B PIPE WITH INSULATION M & L for chilled water piping including necessary fittings viz. flexible connections, 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 fasteners) with necessary accessories, duly insulated complete all as specified and directed by the engineer-in-charge. NOTES: [i] The pipe size 150 mm NB & below shall be MS 'B' class as per IS 1239-1: 2004 & IS 1239-2: 2011. [ii] The pipe size above 150 mm NB shall be welded black steel pipe heavy class as per IS 3589: 2001. [iii] Minimum thickness of MS sheet for pipe size above 150 mm NB and up to 350 mm NB shall be 4.85 mm. [iv] Insulation shall be measured and paid for separately.

Y- STRAINER M & L for PN 1.6 rated 'Y'- type strainer, certified for 300 psig Hyd. body test pressure and 150 psig working test pressure, having cast iron (CI) Gr. FG 200 body & cover conforming to IS 210: 2009, AISI304 plug, AISI304 stainless steel screen trim having 1.2 mm perforation, bolted cover, compressed asbestos fiber gasket, flanges as per BS 10 Table F undrilled, duly insulated with elastomeric thermal insulation complete with necessary accessories all as specified and directed by the engineer-in-charge. NOTES: [i] Insulation shall be measured and paid for separately.

CONDENSER WATER PIPING MS CLASS 'B' PIPE M & L for condenser water piping including necessary fittings viz. flexible connections, 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 fasteners) with necessary accessories complete all as specified and directed by the engineer-in-charge. [i] The pipe size 150 mm NB & below shall be MS Class 'B' as per IS 1239 (Part- 1): 2004 & IS 1239 (Part- 2): 2011. [ii] The pipe size above 150 mm NB shall be welded black steel pipe heavy class as per IS 3589: 2001. [iii] Minimum thickness of MS sheet for pipe size above 150 mm NB and up to 350 mm NB shall be 4.85 mm.

BALL VALVE M & L for CL#125 two-piece design cast iron (CI) straight pattern ball valve, conforming to IS 9890: 1981 and having FG 200 cast iron body conforming to IS 210: 2009, AISI 410 stem, stainless steel AISI 304 ball, renewable PTFE seat & gland packing and screwed female BSP parallel threaded ends conforming to BS 21 with necessary accessories all complete as specified and directed by the engineer-in-charge.

PIPING ACCESSORIES AIR VENT VALVE M & L for PN 1.6 rated air vent valve having brass body, cover, adopter, disc assembly & cap, stainless steel strainer, plastic float and 20 mm screwed threaded ends suitable for maximum operating temperature 100 °C installed on all high points in the water piping system to automatically remove the trapped air with necessary accessories all complete as specified and directed by the engineer-in-charge.

THERMAL INSULATION S & F of black flexible closed-cell elastomeric thermal insulation made of elastomeric foam based on synthetic rubber (NBR / PVC), tested for maximum service temperature 100 ºC as per ASTM C534 & minimum service temperature -50 ºC as per ASTM C534, thermal conductivity λ ≤ 0.037 W/mK at mean temperature θm = 24 ºC as per ASTM C518 / C177, ASTM C335, water absorption by volume ≤ 0.2% as per ASTM C 209 / C1763, flame spread index (FSI) & smoke development index (SDI) 25/50 as per ASTM E84, flammability HB, V-0 as per UL 94, fungi resistance as per ASTM G21/C1338, mould growth resistance as per ASTM E2180-18 / UL 181 and ozone resistance as per ASTM D 1149-18 along with self pre-covered self-adhering, UV treated glass cloth of thickness 7 mm / 200 GSM adhesives and other necessary accessories complete all as specified and directed by the engineer-in-charge.

25 mm thick thermal insulation (for water pipe line)

M&L Fabrication of AHU / TFA Outer Body / Casing - Fabrication, Supply and assembly of outer body of Air Handling Unit using double-skin insulated panels. 'T' structure shall be made from heavy-duty galvanized iron profile framework with croner joints and base frame of galvanized steel channel. Panels shall be constructed of 0.6 - 0.8mm thick pre-coated GI sheet (inside and outsude) with insulation of 25-40 mm thick PUF / rockwool (density 40 ± 2 Kg/ m3) sandwiched between inner and outer sheets to rpovide thermal and acoustic insulation. all panels shall be provided at required locations with double-skin insulated construction, heavy-duty hinges and handles. The casing shall have inspection windows with toughened glass where required. All fabrication shall be carried.

M&L for Monthly Cleaning of AHU Filters - Work includes removal of AHU filters of mother and child plant contains 5 Nos AHU (pre-filters, fine filters or bag filters as applicable) thorough cleaning using vacuum cleaner / air pressure washing / wwater jet (depending on type), drying and refitting in proper position. During cleaning, filters shall be checked for damages, clogging or deterioration of media and defective filters shall be reported for replacement Filter holding frames and sealing gaskets shall also be cleaned to prevent dust bypass. After refitting, AHU shall be run to check air flow, pressure drop across filters and overall performance. Cleaning shall be carried out once every week as preventive maintenance to ensure hygenic indoor air quality and energy-efficient AHU operation

M&L for Overhauling of Electric Motor / pumps of capacity upto 15 HP including Bearing Replacement - The work shall consist of complete dismantling of the motor from its foundation, disconnecting electrical and mechanical connections, opening of end coverss, removal of rotor, fan and terminal box. Thorough cleaning of all motor parts such as stator, rotor, fan cover and housing using air pressure and solvent / kerosene wash to remove dust, dirt, oil, grease and carbon deposits. Inspection and testing of stator winding for insulation resistance with megger, cleaning. Replacment of work-out bearings with new heavy duty sealed bearings of approved make, ensuring proper seating, lubrication and alignment. Dynamic balancing of rotor (if required) to reduce vibration and improve efficiency. Reassembly of motor with correct alignment of rotor, shaft, coupling / pulley and tightening of all fasteners with proper torque. Final testing and commissioning of motor at site under no-load and load conditions, checking current consumption, temperature rise, vibration and noise level, ensuring smooth, vibration-free and efficent operation all as specified and directed by Engineer- in-charge.

M&L for cleaning, servicing and maintenance of Automatic Tube Cleaning System (ATCS) for water-cooled chiller condenser of mother child care plant (contains three nos of condenser) through OEM including opening and cleaning of strainers, ball traps and collectors, inspection and replacement of worn sponge balls, flushing of nozzles / piping, removal of sludge / scale / algae, reassembly with leak-proof sealing, testing and commissioning to ensure smooth circulation of cleaning balls and proper condenser performance complete all as required

Supply of polyurethane spomge cleaning balls of suitable diameter matching condenser tube size, medium density, non- abrasive type, compatible with Automatic Tube Cleaning System (ATCS) for continuous online cleaning of chiller condenser tubes complete all as required.

M&L for PN 1.6 rated precise balancing double regulation type cast iron (CI) balancing valve of 150 mm having CI Gr. FG200 body, EPDM / Nitrile Seal, stainless steel disc, ASTM A 276, Gr SS410 stem, EPDM / Nitrile bush, MS gland nut, ASTM A 276 spindle, CI bonnet, SS304 balancing nut, MS bonnet cap, CI hand wheel, MS plug, stainless steel fastener, flanged end connection etc all as specifieda nd directed by Engineer- in-charge.

M&L for PN 1.6 rated straight type 200 mm NB cast iron (CI) reflux (non-return) valve, conforming to IS 5312-2: 1986, having CI Gr FG200 body conforming to IS 210:2009, bolted cover, integral / renewable seat, renewable disc, gunmetal trim with rubber seat ring, flanged end connection, conforming to IS 1538:1993 with necessary accessories complete all as specified and directed by Engineer- in-charge.

Repairing of Condenser of Chiller plant 220 tr, at Difitech Building after finding the leakage in the leakage in Cindenser copper tube, plug and block the same by opening the two side cover of condenser, inject the Nitrogen pressor to the system to rectifing leakage proof,flashing the system,heating and dehumidifing the Chiller unit, refixing the condenser cover with nuts and bolds, gasket and complete with Refrigerant charging and commissioning complete or as directed by Engineering- in-charge. Make : Kirloskar

Fabrication, supply and installation of air-conditioning ducts made of 22 gauge (0.8 mm thick) GI sheet, conforming to IS:277 with zinc coating not less than 120 g/m2 , fabricated as per IS:655 / SMACNA standards, including straight ducts, bends, elbows, reducers, offsets, transitions and other fittings complete with TDF / TDC/S & drive joints, gaskets, corner pieces, bolts & nuts, mastic sealant, supports / hangers with angle / channel / rods, vibration isolation pads, access doors whre required, and testin for air tightness complete as per drawings nad Engineering- in-charge direction.

Supply and application on antibacterial and antifungal paint (epoxy / acrylic / polyurethane based, hospital grade, washable and non-toxic) of approved brand and shade, on wall / ceiling surfaces including surface preparation (scrapping, sandpapering, filling cracks / holes with putty, primaer coat and two or more finishing coats) to achieve a smooth and uniform surface. The paint shall provide long-term resistance against bacterial and fungal growth, conforming to ASTM G21 / IS 15489 / JIS Z 2801 standards or equivalent, suitable for use in hospitals, clean rooms, pharmaceutical and food processing areas

Note: Schedule of credit (SCHEDULE OF CREDIT) amount of Rs __________ mentioned on Page No _______ shall be deducted from the total quoted amount of BOQ.

Please Enable Macros to View BoQ information