ADDITION ALTERATION AND REPLACEMENT OF AC PLANT AT DINJAN UNDER GE DINJAN

Amount

Phase I

Design, Supply, Installation, Testing & Commissioning of chiller pumps with VFDs for the 50.0 TR water-cooled plant as follows mounted and aligned on a common MS base and drain assembly, vibrator isolators mounted on a common MS base plate complete as per specification required. The pump motors shall have IP-55 all weather proof in all respects for quoting Primary CHW pumps—end-suction/inline, VFD-driven, BEP ≥80%, duty per pump ≈ 8.4 L/s @ ≤20 m head (per 50 TR chiller), motor ≤3.2 kW, IE3 or better, plant to meet ≤18.2 W/kWr at design, power panels/cabling all as per Technical specifications and Scope as per particular specification (Design Brief Report (DBR) and Technical Specification for HVAC system) complete all as specified and directed. NOTE:- All necessary civil work for foundation &, hardstanding for operation and maintenance incl in quoted rate.

Supply, installation, testing and commissioning of chilled-water piping network from chiller nozzles to all AHU coils and back, complete with fittings, valves, instrumentation, insulation, and supports: carbon-steel pipes PN16 (up to DN100 IS 1239/ASTM A106 Gr B Sch 40; DN125 and above IS 3589/ASTM A106 Sch 40), butt-welded with flanged connections at equipment or approved grooved couplings; butterfly isolation valves, wafer check valves, PICVs at each AHU set to design flows (45 TR: 7.56 L/s; 26 TR: 4.37 L/s; 13 TR: 2.18 L/s; 8 TR each: 1.34 L/s), Y-strainers with blow-off, P/T ports and gauges, flexible connectors, air vents at highs and drains at lows, anchors/guides and insulated pipe saddles; metering: CHW header mag/ultrasonic flowmeter and BTU meter with paired Pt100s; surface prep and coating: derust, epoxy zinc-phosphate primer and PU enamel; pressure test and cleaning: hydro 1.5× design (min 10 bar), flushing ≥1.5 m/s, chemical clean and passivation; insulation (CHW 7/12 °C) closed-cell elastomeric foam k≤0.035 W/m•K with vapor barrier, indoor minimum thickness DN≤50: 25 mm, DN65–DN100: 32 mm, DN≥125: 40 mm; outdoor minimum thickness DN≤50: 32 mm, DN65–DN100: 40 mm, DN≥125: 50 mm with 26 SWG stucco aluminium cladding and sealed seams; include valve/strainer boxes with matching insulation, labeling and flow arrows every 10 m and at each valve; deliver shop drawings, isometrics, support spacing table, insulation submittals, and test reports; measurement shall include complete supply, installation, insulation, cladding, testing, flushing, balancing, and commissioning of the CHW network all as per Technical specifications and Scope as per particular specification (Design Brief Report (DBR) and Technical Specification for HVAC system) complete all as specified and directed

Design, Supply, Installation, fabrication, Testing & Commissioning of Condenser water circulation system (plant ↔ chillers ↔ cooling towers): carbon-steel piping as per IS 3589 (Sch-40) with welded/flanged joints, complete from condenser-water pumps to chiller condensers, common headers, tower risers and back, including line sizes as per attachment: 150 NB CW supply/return headers (2-working duty 85.2 m³/h), 3× per-cell risers and returns 80 NB each (28.4 m³/h per cell), 150 NB basin equalizer, 100 NB CW bypass (discharge to return, modulating), 40 NB side-stream filter take-off/return (~5% flow), 25–40 NB makeup with backflow prevention and 25–32 NB blowdown to drain; pump suction arrangement with straight 5×D, eccentric reducer (flat-top), basket strainer, flexible connectors and vibration eliminators; pump discharge with non-return valve, butterfly isolation, flow meter (magnetic or insertion) and pressure tapping; per-cell branches with butterfly isolation, balancing valve (circuit setter) on supply, butterfly on return and test ports; bypass control valve with pressure indicators across; tower basin accessories including coarse strainers, equalizer with isolations, overflow, drain and low-point blow-off; high-point air vents and low-point drains; anchors, guides, supports, expansion offsets/loops and required spool pieces for maintenance; identification, tags and painting; hydrostatic testing, system flushing to ≥2.4 m/s where feasible, commissioning and handing-over with as-built drawings, O&M manuals and training. Conform to NBC 2016 Part 8 Sec-3, CPWD/MES’s specs, and the attached line schedule and flows all as per Technical specifications and Scope as per particular specification (Design Brief Report (DBR) and Technical Specification for HVAC system) complete all as specified and directed NOTE:- All necessary civil work for foundation &, hardstanding for operation and maintenance incl in quoted rate.

Design, Supply Installation, testing & commissioning Cooling tower, open-circuit, induced-draft, CTI STD-201 certified, cooling-tower cells, each ≥ 62.5 TT at range 5.6 K and approach ≤ 2.8 K at WBdesign = 28 °C (0.4%); Each cell shall have dedicated fan+VFD, make-up, blowdown tap, level control, and isolation valves. Common basin allowed with equalizer lines. drift ≤ 0.002%; FRP casing; PVC film fill and eliminators; SS screens; ladders/platforms/guards; IE4 motors with VFDs; vibration switches; makeup/blowdown meters; conductivity controller; side-stream filter ≥ 5% of recirc with isolation and DP gauge; basin sweepers; basin heaters not required for Assam, CTI ATC-105 field test included. Accessories: make-up assembly with backflow prevention; basin sweep; drift test ports; spare nozzles and belts (if belt-drive) all as per Technical specifications and Scope as per particular specification (Design Brief Report (DBR) and Technical Specification for HVAC system) complete all as specified and directed NOTE:- All necessary civil work for foundation &, hardstanding for operation and maintenance incl in quoted rate.

Design, Supply Installation, testing & commissioning chilled-water expansion/pressurization set comprising: 1 No. diaphragm/bladder expansion tank, epoxy-lined, 10 bar WP, 100 L net (final size to be confirmed from system volume and static head), flanged; nitrogen pre-charge to Pmin; isolation valve with drain cock at tank connection; non-return valve on tie-in; pressure transmitter 0–10 bar with local pressure gauge; automatic air vent with isolator at high point; make-up assembly on CHWR including backflow preventer, strainer, pressure-reducing valve set to Pmin, isolation valves, and make-up water meter; system relief valve (6 bar set, sized to code) on CHW line; all interconnecting piping, fittings, supports, tags, and painting complete; submission of tank data (pre-charge, acceptance volume, design pressure), factory certificates, nitrogen charging record, and on-site commissioning to demonstrate stable system pressure at topmost coil ≥0.3 bar, with alarms for low/high pressure and frequent make-up integrated to BMS all as per Technical specifications and Scope as per particular specification (Design Brief Report (DBR) and Technical Specification for HVAC system) complete all as specified and directed

S & F of Make Up Water Tank, HDPE, 5000 Ltr, with 1 no float valves & 3 nos 50 mm dia butterfly valves For Makeup Cooling Tower line] all complete as specified and directed. NOTE:- All necessary civil work for foundation &, hardstanding for operation and maintenance incl in quoted rate.

Supply, installation, testing and commissioning of Aluminium Laminar HEPA ceiling plenum: 3.0 m × 2.4 m active array, modular grid, gel-seal cassettes, equalization screens, aerosol injection and sample ports, access panels, integrated ΔP taps. H14 HEPA modules, EN 1822, factory scan-tested, with ISO 14644-3 on-site integrity test. Qty as required to deliver ≈2100 CFM at 25–35 cfm/ft². Peripheral non-aspirating diffusers sized for ≈900 CFM total with pattern control around the laminar field. Low-level return grilles, two opposite corners sized for ≈1620 CFM total at 150–300 mm AFFL; one high-level return sized for ≈1080 CFM. Opposed-blade VCDs and balancing taps included.

Supply, installation, testing and commissioning of exhaust fan set for (OT) roof high-plume centrifugal, vertical discharge, 1W+1SB, VFDs, antivibration mounts, weatherhoods, backdraft dampers, NEMA-rated disconnects. Duty point ≈2700 CFM at calculated ESP. Provide re-entrainment separation per ASHRAE 170. Exhaust stack and curb: vertical, drainable, with roof flashing and access platform. Clearances per ASHRAE 170 and site geometry. Ducting and fittings: GI sheet with sealed joints, cleanouts, VCDs, access doors.Room differential pressure monitor with local display and BMS point; alarm on loss of positive pressure. Testing and commissioning: HEPA integrity test per ISO 14644-3, array velocity and smoke visualization, airflow and balance, room pressure test, exhaust separation conformance check, O&M manuals. Notes I. AGSS is a separate medical gas system. Do not mix with HVAC exhaust. II. Keep AHU and exhaust intake-exhaust separations per ASHRAE 170. Coordinate with architectural roof plan. III provinding and fixing electrical connection taken from nearst DB incl supply of materials, wiring, termination, testing and commisioning complete as required.

(a) Indoor duct work: Design, supply, fabricate, installation, seal, support & leakage test internal supply and return duct systems fabricated to SMACNA HVAC Duct Construction Standards 2020 with pressure classes 3-in./6-in. w.g. as scheduled, Seal Class A, Leakage Class ≤3 with section-wise tests per SMACNA 2012 Leakage Manual; sheet gauges not less than IS 655:2006; flanged TDF/TDC joints with gaskets; supports per SMACNA; thermal insulation with sealed vapor barrier per condensation calc; opposed-blade low-leak VCDs and test ports; UL 555/555S fire/smoke dampers at code barriers per NBC Part 4; ASHRAE 70-rated supply diffusers and return grilles; VAV at terminals by manual OBD( all rooms,except OT) and motorized pressure-independent VAV boxes or motorized VAV diffusers with BMS (only for OT); complete TAB per ASHRAE 111/NEBB with certified reports all as per Technical specifications and Scope as per particular specification (Design Brief Report (DBR) and Technical Specification for HVAC system) complete all as specified and directed {Quoted rate is inclussive of Supply Air diffuser with volume control dampers (Motorized/Mannual) & return Grill (without volume control dampers)} (b) Outdoor duct work: Design, supply, fabricate, installation, seal, support, weatherproof & leakage test per ANSI/SMACNA 006-2020 ( min 3-in./ 6-in. w.g. class as scheduled. Seal Class A) and ANSI/SMACNA 016-2012 (Leakage Class ≤3; test at design pressure); include roof curbs/flashings, insulation with weather jacket, flanged gasketed joints, and submittal of leakage test results etc all as per Technical specifications and Scope as per particular specification (Design Brief Report (DBR) and Technical Specification for HVAC system) complete all as specified and directed {Quoted rate is inclussive of Supply Air diffuser with volume control dampers (Motorized/Mannual) & return Grill (without volume control dampers)}

Supply and Laying of 32 mm Dia PVC Drain Pipe (Medium Class)with respective fittings ,proper supports and duly insulated with 6 mm thick closed cell nitrile rubber insulation all complete as specified and directed.

Design, Supply, installation, testing and commissioning of one floor-mounted AHU control panel (MCC+DDC) in plant room for the roof-mounted 11000 CFM AHU (ICU & OT corridor), including: sheet-steel IP55 Form-2b enclosure with copper busbars 25 kA/1 s; incomer MCCB with rotary handle; Type-2-coordinated outgoing feeders; Type-2 SPD; control transformer and 24 VDC PSU; panel MFM (V, A, kW, kWh, PF, THD); space heaters and internal lighting; feeders either (A) single supply to EC fan distribution or (B) individual VFD feeders for IE4 motors with input reactors/dv-dt filters; field wiring and terminations for OA/RA low-leak dampers, CHW/HW valves, filter-ΔP sensors, SAT/RAT/RH/duct-static; BACnet DDC with sequences for SAT control, duct-static reset, OA minimum-position per ASHRAE 170, fault/alarm handling and auto-restart; power and control cabling from panel to AHU on roof (≈ 20 m): 4C × 10 mm² Cu XLPE armoured FRLS power cable with glands/lugs and dedicated earth, 12C × 1.5 mm² FRLS control cable, twisted-shielded pairs and Cat-6 STP as required; supports, trays, sleeves, sealing and labels; inspection, testing, commissioning, documentation and as-built drawings. Submittals shall evidence compliance to IS/IEC 61439, IS 7098-1, IS 3043, ASHRAE 90.1 FEI (per AMCA 208) and applicable ASHRAE 170 ventilation controls all as per Technical specifications and Scope as per particular specificationI (Design Brief Report (DBR) and Technical Specification for HVAC system) complete all as specified and directed

Design, Supply, installation, testing and commissioning of one floor-mounted AHU control panel (MCC+DDC) in plant room for the roof-mounted Labour Block AHU (5000 CFM, ESP 65 mm w.g.), including: sheet-steel IP55 Form-2b enclosure with copper busbars 25 kA/1 s; incomer MCCB with rotary handle; Type-2-coordinated outgoing feeders; Type-2 SPD; control transformer and 24 VDC PSU; panel multifunction meter (V, A, kW, kWh, PF, THD); space heaters and internal lighting; feeders either (A) single supply to EC fan array distribution or (B) individual VFD feeders for IE4 motors with input reactor/dv/dt filter; field terminations for OA/RA damper actuators, CHW/HW valves, filter-ΔP sensors, SAT/RAT/RH, duct static; BACnet DDC with sequences for SAT control, duct-static reset, OA minimum-position per ASHRAE 170 and alarms; power and controls cabling from panel to AHU on roof at ~15 m including 4C × 6 mm² Cu XLPE armoured FRLS power cable with glands/lugs and dedicated earth, 12C × 1.5 mm² FRLS control cable, twisted-shielded pairs and Cat-6 STP as required; supports/trays/cleats, sealing of roof sleeves and labeling; inspection, testing, commissioning, documentation and as-built drawings. Submittals shall evidence compliance to IS/IEC 61439, IS 7098-1 and FEI compliance per ASHRAE 90.1/AMCA 208; AHRI 410 coil data to be furnished by AHU vendor all as per Technical specifications and Scope as per particular specification (Design Brief Report (DBR) and Technical Specification for HVAC system) complete all as specified and directed

Design, Supply, installation, testing and commissioning of one floor-mounted AHU control panel (MCC+DDC) in plant room for the roof-mounted OT-1/OT-2 AHU (3000 CFM, ESP 125 mm w.g., 100 % OA), comprising: sheet-steel IP55 Form-2b enclosure with copper busbars 25 kA/1 s; incomer MCCB with rotary handle; type-2-coordinated outgoing feeders; Type-2 SPD; control transformer and 24 VDC PSU; panel multifunction meter (V, A, kW, kWh, PF, THD); space heaters and internal lighting; feeders either (A) single supply to EC fan array distribution (preferred) or (B) individual VFD feeders for IE4 motors with input reactor/dv/dt filter; field terminations for OA shut-off damper, CHW/HW valves, filter-ΔP, SAT/RAT/RH, duct static, room ΔP; BACnet DDC with sequences for SAT control, duct-static reset, positive-pressure control per ASHRAE 170, alarms and auto-restart; power and controls cabling from panel to AHU on roof at ~25 m including 4C × 6 mm² Cu XLPE armoured FRLS power cable with glands/lugs and dedicated earth, 12C × 1.5 mm² FRLS control cable, twisted-shielded pairs and Cat-6 STP as required; supports/trays/cleats, roof sleeve sealing and labeling; inspection, testing, commissioning, documentation and as-built drawings. Submittals shall evidence compliance to IS/IEC 61439, IS 7098-1, IS 3043, and FEI compliance per ASHRAE 90.1/AMCA 208; control logic to maintain OR ventilation/pressurization per ASHRAE 170 all as per Technical specifications and Scope as per particular specification (Design Brief Report (DBR) and Technical Specification for HVAC system) complete all as specified and directed

S&F of GI perforated cable tray (50mm x 200mm) complete all as specified and directed.

S&F of 25 X 3 mm thick aluminum Strip for earthing complete all as specified and directed.

Supply, install, commissioning and testing of commercial Air curtain unit of size 34" x 96" for prevention of dust and conditioned air losses, single phase, 220 V, 50 HZ, made out of MS/CRCA sheet of minimum thickness 18 gauge finished with two coats of red oxide primer and final coat of synthetic enamel paint (oven baked) with MS - CRC 18 gauge square perforated suction grills, Aluminium alloy fans and single phase electric motor, nozzles etc, complete with fittings and accessories so as to produce 1 - 1.5 m/sec air velocity at floor level for door opening as specified

Dismanlting and Shifting of complete items connected to existing central AC plant of capacity 28 TR x 03 Nos and package type AC plant of capacity 05 TR x 03 nos including all electric panels, electric connections, ducting from plant room to last end of duct without damage of fall ceiling, connected items of AHU, cooling towers of any capacity with connected pipeline all items deposit at MES yard complete as specified and as directed.

Material and labour for earthing complete with galvanised steel earth plate electrode of size 600 x 600 x 6 mm thick, burried directly in ground (earth pit not less than 2.25 m below normal ground level) with top edge of the plate not less than 1.5 m below normal ground level connected to galvanised strip 32x6 mm as earthing lead by means of nuts, bolts and washers of galvanised iron and earth lead protected by galvanised iron pipe 15 mm bore (light grade) and connected to earth test point and including cement concrete pit in PCC (1:3:6) type C-1(using 20 mm graded aggregate) and pre-cast RCC cover slab of size 540 x 540 x 50 mm thick, reinforced with 8 mm dia TMT bars both ways and one handle for lifting made with 10 mm dia mild steel bar,funnel, wire mesh 20 mm bore galvanised (light grade) for watering, charcoal and salt in alternate layers including necessary execuation and eath works in any types of soil complete all as shown on Electrical plate No 3 of MES SSR-I including taking out the old earthing material complete all as specified and directed.

Design, manufacture, supply, install, test, and commission one integrated HVAC plant control panel (IS/IEC 61439, 50 kA, IP54) comprising incomer ACB with metering, MCCB feeders, VFDs for secondary CHW pumps, CW pumps, and cooling-tower fans, starters for primary CHW pumps and auxiliaries, PLC with redundant PSU, 15″ HMI, managed Ethernet switches, BACnet/IP gateway, energy meters (0.5 S), DP/temperature/flow/conductivity/ORP instrumentation interfaces, hardwired FAS and E-stop circuits, internal panel HVAC, wiring and terminations; include software, graphics, trends, alarm routing, cause-and-effect, FAT/SAT, O&M manuals, training, and as-built drawings; provide harmonics-compliance method to meet IEEE-519 at PCC and ensure 24×7 automatic operation with BMS integration, AHUs excluded all as per Technical specifications and Scope as per particular specification (Design Brief Report (DBR) and Technical Specification for HVAC system) complete all as specified and directed

Excavation in trenches not exceeding 1.5m wide and not exceeding 1.5m deep for foundation/cable trench, not exceeding 10Sqm on plan and getting out in soft/loose soil complete all as specified and directed.

Returning filling including spreading, levelling and well ramming in layers not exceeding 25cm thick in soil complete all as specified and directed.

Removal of surplus soil to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and directed.

M&L for sand cushioning with dry clean sand 15cm below cable and 8 cm above the cable complete all as specified and as directed. Note : Punned thickness shall be measured for payments.

Supplying and laying un-reinforced precast concrete cable cover, classClass LV, Type I, flat, size 250 mm x 150mm x 40mm complete all as specified and directed.

S&F of size 50 mm bore GI tubing “light grade” in trenches/ on pole for protection of cables complete all as specified and directed.

Supply ,laying & testing in trenches / pole cable size 95 sq mm 3.5 core XLPE insulated screened PVC bedded galvanised steel strip or wire, armoured electric power cable (heavy duty) with stranded aluminium conductor 11000 volts earthed grade of cross sectioal area wth all fitting accessories complete all as specified and directed.

Supply, Installation, testing and commissioning complete of manufacturer or OEM manufactured, static silent (Sound Proof enclosure) Diesel Engine Driven Generating Set capable of delivering 160 KW (200 KVA), 415 Volts (AC three phase, 4 Wire system of supply) 50 HZ at power factor 0.8 minimum. The DG Set shall consists of diesel engine coupled to a matching alternator, through flexible coupling and mounted on common base frame and complete with control panel standardized by manufacturer, fuel tank with mounting arrangements and inlet, outlet return inlet oil arrangement, exhaust pipe complete and suitable for conditions prevalent at Dinjan (Capacity of Engine, alternators shall be worked out taking all derating factors into consideration) including PCC foundation (of suitable size leaving at least 0.5 M all around for ease of movement and 0.5 M height), anti-vibration pads, including all features to comply with latest CPCB-IV guidelines and Comprising of followings:- (i) ENGINE(Prime Mover): Diesel Engine 1500 RPM , direct injection, 6 cylinders, four stroke, radiator cooled, performance class of generator set ISO 8528-5 G2, turbo charged, capable of giving adequate BHP to drive Alternator capable of delivering 160 KW (200 KVA) at outdoor atmospheric conditions at Dinjan, (Taking all derating factor into consideration), 12/24 Volt (as per manufacturer recommendations) electric battery start incl suitable size battery, complete withy fly wheel all standard fittings/fixtures as per manufacturer and including suitable panel with tachometer, lub oil temperature, pressure gauge and frequency meters and also including self starter system, dynamo, fuel electric control panel with electronic governor (ECPG) and Engine protection system (Shut down, low lub oil, oil pressure, over speed etc) fuel tank and first fill of lub oil and other consumables etc .

Material & Labour for earthing with galvanised steel earth plate electrode of size 60cm x 60 cm x 6mm thick buried directly in ground (earth pit not less than 2.25m deep below the ground level) with top edge of the plate not less than 1.5m below normal ground level, connected to the galvanised earth lead by means of bolts, nuts check nuts and washers of galvanised iron or steel using GI strip 32x6 mm as earthing lead as shown in electrical plate No. 3 of SSR Part-I connected to earthing test point all as specified or indicated including testing on completion including necessary excavation and earth work in soft/loose soil, returning filling, disposal of surplus soil, earth pit in PCC 1:3:6 type C-1 using 20mm graded stone aggregate pit, funnel, 20mm dia GI medium grade watering pipe, 40mm dia GI medium grade earth lead protection pipe, CI frame and cover, wire, copper lugs etc mesh, charcoal and common salt in alternatee layer complete all as specified and directed by Engr-in-Charge. Note : - Length of earthwire and protection pipe in above mentioned item is considered upto 7.50 m length, additional length required shall be measured and paid separately.

Dismantling wall and celling board (fibre, pulp, insulation etc) any thickness including cover fillets complete all as directed.

S&F 605 mm x 605 mm Anodised aluminium snap grid frame work for false ceiling complete all as speecified and directed.

S&F Hangers 6 mm dia G.I (upto 1200 mm length) adjusting level fixed to roof slabs by means of ceiling cleats made out of G.I. flat 40 x 3 mm size 60 mm long and expansion hold fasteners 12.5 mm dia 40 mm long complete all as specified and directed.

M&L for 6 mm thick high pressure, oceanic pre-primed, self embossed, non-asbestos fibre cement decorative board , water, termite and fire resistant for insulation and acoustic purpose fixed or laid / inserted to timber / GI / Aluminium framework with screws complete all as specified and directed.

S&F factory made single extruded WPC (Wood Polymer Composite) solid door/ window/Ceosetory windows & other Frames/ Chowkhat of size 45 x 70 mm comprising of virgin PVC polymer of K value 58-60 (Suspension Grade), calcium carbonate and natural fibers (wood powder/ rice husk/ wheat husk) and non toxic additives (maximum toxicity index of 12 for 100 gms) fabricated with miter joints after applying PVC solvent cement and screwed with full body threaded star headed SS screws having minimum frame density of 750 kg/ cum, screw withdrawal strength of 2200 N (Face) & 1100 N (Edge), minimum compressive strength of 58 N/Sqmm, modulus of elasticity 900 N / Sqmm and resistance to spread of flame of Class A category with property of being termite/borer proof, water/ moisture proof and fire retardant and fixed in position with MS hold fast/ lugs/SS dash fasteners of required dia and length complete all as directed. Note: (i) M.S. hold fast / lugs or SS dash fasteners shall be measured and paid separately under respective item. (ii) WPC solid door/window frames, + 5 mm tolerance in dimension i.e. depth and width of profile shall be acceptable.

S&F factory made single extruded WPC (Wood Polymer Composite) solid plain flush door shutter of 30 mm thick comprising of virgin polymer of K value 58-60 (Suspension Grade), calcium carbonate and natural fibers (wood powder/ rice husk/wheat husk) and non toxic additives (maximum toxicity index of 12 for 100 gms) having minimum density of 650 kg/cum and screw withdrawal strength of 1800 N (Face) & 900 N (Edge), minimum compressive strength 50 N/Sqmm, modulus of elasticity 850 N/Sqmm and resistance to spread of flame of Class A category with property of being termite/borer proof, water/moisture proof and fire retardant and fixing with stainless steel butt hinges of required size with necessary full body threaded star headed counter sunk S.S screws, complete all as directed. Note: Stainless steel butt hinges and necessary S S screws shall be measured and paid paid separately under respective items.

M&L for rolled sections of Fe-410-W(Gde-E-250) quality- B as in main and cross beams,hip and jack rafters; purlins where connected to common rafters and running rails and guides for sliding doors; fixed with angle cleats or other connecting plates complete all as directed.

Demolition of brick work or stone/boulder masonry, built in cement morter including all quoins, arches, pillars complete all as specified and directed.

M&L brick work with sub class -B bricks, straight or curved on plan to any radius in half brick thick wall built in CM (1:4) complete all as specified and directed.

S&F Pre-painted galvalume aluminium zinc coating GI based corrugated steel sheet 0.50 mm thick of an colour having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with L-type or J-type or cranked hook bolts in lieu of screw complete all as specified and directed.

S&F framed work such as grills,gratings, etc.. with ends of bars shouldered and/or riveted,or forged into spikes; framed guard bars; barred iron doors;ladders; framed balusters; walk ways; railings; framework of water tanks and similar work conforming to Fe.290.Gde-E-165 including fabrication complete all as specified and directed.

M&L for Complete removal of existing treatment from walls and applying 1-2 mm thick wall putty and applying two or more coats of 100% Premium acrylic emulsion paint having VOC less than 50 gm/litre and UV resistance as per IS 15489:2004, alkali & fungal resistance,dirt resistance exterior paint of required shade (Company Depot Tinted) with silicon additives @ 1.43 litre/ 10 sqm over and including priming coat of exterior primer applied @ 0.90 litre/ 10 Sqm over new plastered surface even and smooth complete all as specified and directed.

M&L for preparation of new steel surfaces of any description, over 10 cm in width or girth, not otherwise described and applying two coats of synthetic enamel paint over a coat of red oxide primer complete all as specified and directed.

M&L for 75 mm thick , plain cement concrete (1:4:8), type D-2 (ussing 40mm graded crushed stone aggregate ) as in sub base of flooring complete all as specified direected.

M&L for 15 mm thick, screed bed or bedding layer of cement mortar (1:4), for laying floor finishes complete all as specified and directed.

M&L for Nonskid Ceramic tiles 7 to 8 mm thick (square/ rectangular) area of each tile exceeding 0.11 sqm but not exceeding 0.18 sqm, in floors etc. set and jointed in neat cement slurry and pointed in white or coloured cement to match with the shade of tiles complete all as specified and directed.

M&L for rendering 15 mm thick on fair faces of brick work or concrete surfaces in cement mortar (1:4), mixed with integral water proofing compound at the rate 3% by weight of cement or as per manufacturer's instructions and finished the surface even and smooth without using extra cement complete all as specified and directed. Note : WPC shall be measured and paid separately as supply only

M&L for providing, cement concrete (1:2:4) type B0 using 12.5 mm graded crushed stone aggregate as in roof kerbs or mud stops, rounded or chamfered on edges in lintels upto 1.5m clear span, cills, steps; seismic and other similar bands, plinth courses, hold fast block, string courses, lacing courses, parapets and railings upto 60 cm in height, copings, kneelers, apex stones, bed plates, water troughs and the like including weathering, slightly rounded or chamfered angles and throating, as directed

M&L for 10 mm thick rendering on fair face of brick works or concrete surfaces of walls with CM (1:4) and finished even and smooth without using extra cement complete all as specified and directed.

Formwork to sides and soffits of floor or roof beams, beam haunchings, girders, bressummers, lintels, cantilevers, shelves including supports, overhangs, etc. also splays between floors and beams for rough finished surface of concrete complete all as specified and directed.

Reinforced cement concrete design mix M-25 (using 20 mm graded crushed stone aggregate) as in foundations, including rafts, footings, foundation beams; plinth beams; bases for columns, etc.; basement slabs, under-reamed piles and mass concrete complete all as specified and directed.

Formwork to sides of squar ,rectangular or polygonal pillars, posts, struts, piers, columns and stanchions for rough finished flat surfaces of conrete complete all as specified and directed.

M&L for reinforced cement concrete (1:2:4) type B1 (using 20 mm graded crushed stone aggregate) as in columns, pillars, piers posts and struts complete all as specified and directed.

M&L for mild steel TMT bars 10 mm dia and over, cut length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9 mm dia or securing with clips complete all as specified and directed.

M&L for mild steel TMT bars 5 mm dia and over upto and including 10 mm dia cut length, bent to shape required, including cranking, bending spirally for hooping as in stirrups complete all as specified and directed.

M&L for preparing of new plastered surfaces of walls and applying plaster of paris putty of 1 -2 mm thick over plastered surface to prepare the surface even and smooth and applying two coats of oil bound distemper over a coat of cement primer complete all as specified and directed.

S&F 100 mm size, stainless steel butt hinges fixing with stainless steel screws complete all as specified and directed.

S&F 150 mm size, aluminium anodised handle, fabricated type complete all as specified and directed.

S&F 150 mm long Mild steel barrel tower bolts, stove enamelled black, with bright bolt c omplete all as specified and directed.

S&F Mild steel sliding door bolts, 250 mm long, plate type, stove enamelled black, with bright bolt not less than 12 mm dia with and including a minimum of 6 bolts and nuts, four on bolt plate and two omplete all as specified and directed.

M&L for preparation newly plastered surfaces of wall, chajja facia and applying putty 1-2 mm thick and applying two coats of 100% premium Acrylic emulsion paint having VOC less than 50 gm/litre and UV resistant as per IS-15489=2004 alkali and fungal resistant exterior paint of required shed (company depot tinted) with silicon additives 1/43 litres/10 Sqm over and including primer @ 0.90 litres/.10 sqm over new surfaces using Airless spray technology with maximum working pressure of 3300 Psi and capable of operating single spray gun with a maximum material hose length of 30 Mtr, the spray machine whould be of reputed manufacturer with pro guaeds technology and capability of tracking pressure and paint usage and certified by paint manufacturer and as mentioned in PS including acessories complete all as directed.

Supply only water proofing compound ISI marked complete all as directed.

PHASE II Comprehensive annual Maintenance of 50 TR (2W+1S) HVAC system complete all as specified and directed. Note : (i) The quoted rates shall deemed to be included for repair/ replacement of any parts due to manufacturing defects during period of 03 (Three) years defect liability period. SCOPES OF WORKS: (A) Comprehensive Maintenance of HVAC units (Scope of Works) Scroll Chillers (i) Quarterly visit and check the operating parameters of the chillers (ii) Quarterly review the previous months operating log records and alarm history (iii) Quarterly physically inspect the unit for any unusual vibration, noise etc. (iv) Quarterly check for sign of refrigerant leakage (v) Quarterly check the proper functioning of microprocessor. (vi) Quarterly visit and check the operating parameters of the chillers.(vii) Quarterly check/calibrate the flow switch for proper functioning (viii) Attending breakdown calls of the HVAC units as and when required. (ix) Carry out the cleaning of condenser tubes to a maximum of twice in a year, if required. (x) Annual inspection of the oil quality (by colour and operating parameters) and replacing the same, if required, subject to maximum once during the contract period. (xi) Supply of spares if required for attending and troubleshooting any breakdown (xii) Replenish refrigerant as and when required basis (xiii) Replacement of compressor from loan stock in case of failure of compressor (xiv) Any kind of normal wear and tear, corrosion, chemical pollution of rusting/pitting of the plant, heat exchanger. Painting of the equipment (xv) Any modification of plant, welding work/masonry work, carpentry work/rewiring/ ducting /insulation/rewiring of panel etc Main incoming electrical panel, switch, circuit breaker, fuse and related interconnecting all power and control cable (B) Pump and Motors (Chilled water pump and condenser water pump) (i) Quarterly greasing of bearing at pump end (ii) Quarterly greasing of bearing at motor end (iii) Quarterly checking and doing the alignment of shaft (iv) Quarterly servicing of all pump motors (v) Quarterly checking and doing alignment of the motor (vi) Quarterly servicing of chilled water line strainer for the pump (vii) Quarterly servicing of the pump electrical panel (viii) Quarterly flow checking for condenser and chilled water circuit (ix) Replacement of bearing as and when required (x) Replacement of mechanical seal of the pumps as and when required (xi) Repair and replacement of coupling for the condenser water pump as and when required (xii) Rewinding of pump motor if burn out (xiii) Replacement of motor terminal in case of burn out (xiv) Replacement of electrical spares of electrical starter panel for pump as and when required (xv) Replacement of motor (supplied by customer) as and when required (xvi) Supply and replacement of VFD, mixing valve (xvii) Supply and replacement of water line valves (xviii) Supply of incoming cable (xix) Supply of new pump and pump motors as install in plant (xx) Painting of pump motors/associated piping (xxi) Any supply, repairing and replacement work on electrical breaker for pumps (xxii) Painting of Cooling Tower and associated piping (xxiii) Any supply, repairing and replacement work on electrical breaker for Cooling Tower

Sr. Item No. 72 Contd/... (C) cooling Towers (i) Chemical cleaning/descaling of fill media and basin (ii) Overhaul fan assembly – inspect blades, hub, and shaft (iii) Check condition and alignment of gear box / belt drive (iv) Inspect and replace damaged drift eliminators (v) Check water flow and distribution uniformity (vi) Inspect corrosion on structure, casing, and basin (vii) Apply anti-corrosive paint / coating on metal surfaces (viii) Replace worn-out bearings, belts, or seals (ix) Megger test of motor windings (x) Balance and align fan blades dynamically (xi) Inspect and replace fill media (if heavily scaled or damaged) (xii) Calibrate and test all sensors (temperature, flow, level) (xiii) Replacement of fan motor / fan blade (xiv) Replacement of gear box or pulley set (xv) Repair or replacement of make-up water float valve (xvi) Repair of basin leakage / water-proofing (xvii) Replacement of damaged nozzles / spray headers (xviii) Replacement of fill media or eliminators (xix) Replacement of corroded GI / SS piping and flanges (xx) Rewinding of motor if burnt (xxi) Repair or replacement of electrical control panel components (xxii) Structural repair / painting / welding of tower frame or casing

Sr. Item No. 72 Contd/... (D) Air Handling Unit (AHU) (i) Quarterly greasing of bearing at AHU blower end (ii) Quarterly greasing of bearing at AHU motor end (iii) Quarterly checking and doing the alignment of shaft (iv) Quarterly checking and doing alignment of AHU belt (v) Quarterly cleaning of AHU coil (vi) Quarterly servicing of AHU electrical panel (vii) Quarterly tightening of terminal of motors (viii) Replacement of bearings as and when required (ix) Replacement of V-belt as and when required (x) Repairing and replacement of pulleys as and when required (xi) Re-metaling of AHU shaft if required (xii) Rewinding of AHU motor if burn out (xiii) Replacement of AHU motor terminal in case of burn out (xiv) Replacement of MCCB and contactor of AHU electrical panel if required (xv) Replacement of motors (supplied by customer) (xvi) Replacement of AHU pre filters (supplied by customer) (xvii) Supply of AHU pre filters & fine filters (xviii) Supply and replacement of VFD (xix) Supply and replacement of water line valves (xx) Supply and replacement of mixing valve and its actuator (xxi) Supply of new motor any capacity as install in plant (xxii) Supply and replacement of shaft or blower (xxii) Supply of incoming cable (xxiv) Supply and painting of chilled water pipeline (xxv) Painting of AHU (xxvi) Any supply, repairing and replacement work on electrical breakers for AHUs (xxvii) Supply and replacement of grilles, diffusers, jet nozzles, fire dampers (xxviii) Internal cleaning of HVAC duct (E) Ducting (i) Repairs and replacement of insulation, ducting, panels, Pipes, Sheet metal works, duct cleaning etc. (ii) Repairing of any type of civil foundation work connected to the chilling units. (iii) Repair/replacement of electrical main incoming switch / circuit breaker, main incoming cable, fuses and indication lamps.(iv) Supply of motors, water line motorized mixing valves, fan, strainer etc (v) Painting of Equipment/piping (vi) Repairs and replacement of insulation, ducting, panels, Pipes, Sheet metal works, duct cleaning etc. (vii) Repairing of any type of civil foundation work connected to the chilling units. (viii) Repair/replacement of electrical main incoming switch / circuit breaker, main incoming cable, fuses and indication lamps.(ix) Supply of motors, water line motorized mixing valves, fan, strainer etc (F) CHILLED WATER PIPING NETWORK (i) Visual inspection of all chilled-water pipelines, valves, and joints for leaks, corrosion, and insulation damage (ii) Check and tighten flange bolts, supports, and hangers (iii) Cleaning of strainers and Y-filters (iv) Check and service butterfly valves, balancing valves, NRVs, etc. (v) Inspect insulation on pipelines for moisture or deterioration (vi) Check flow rate and temperature differential (ΔT) between supply & return lines (vii) Flushing of CHW line (if required) with chemical treatment (viii) Replacement of gaskets, seals, rubber expansion joints as necessary (ix) Painting of exposed pipelines (anti-corrosive + finish coat) (x) Pressure testing of repaired sections (G) CONDENSER WATER CIRCULATION SYSTEM (i) Inspect all condenser water pipelines for leakages, rust, and scaling (ii) Check condition and operation of condenser pumps, alignment, and coupling (iii) Clean suction strainers and foot valves (iv) Descaling and chemical cleaning of condenser tubes (v) Inspect and clean cooling tower water basin and fill media (vi) Check and maintain water level controls, float valves, and make-up arrangements (vii) Test and treat water for hardness, pH, TDS, and biological growth (viii) Check and repair all valves, joints, supports, and expansion bellows (ix) Overhaul condenser pumps (mechanical seal, bearing) (x) Painting of pipelines, supports, and cooling tower structure (xi) Replacement of corroded or leaking pipe sections (if required) (xii)Insulation rework on chilled water return lines (if required) (xii) Repair/replacement of rubber expansion joints (if required) (xiv) Overhauling or replacement of butterfly/balancing valves (if required) (xv) Flushing and recharging of the entire CHW & condenser circuit

Comprehensive annual maintenance of 50 TR (2W+1S) HVAC system for 1st year after completion of Phase I as per scope of work given above complete all as specified and directed.

Comprehensive annual maintenance of 50 TR (2W+1S) HVAC system for 2nd year after completion of Phase I as per scope of work given above complete all as specified and directed.

Comprehensive annual maintenance of 50 TR (2W+1S) HVAC system for 3rd year after completion of Phase I as per scope of work given above complete all as specified and directed.

Comprehensive annual maintenance of 50 TR (2W+1S) HVAC system for 4th year after completion of Phase I as per scope of work given above complete all as specified and directed.

Comprehensive annual maintenance of 50 TR (2W+1S) HVAC system for 5th year after completion of Phase I as per scope of work given above complete all as specified and directed.

AIRFRAME (BID ID -3490081)

Parksons Engineering Company Pvt Ltd (BID ID -3491338)

Pneumatic Engineers Pvt. Ltd. (BID ID -3488304)

Superior Aircon Pvt. Ltd. (BID ID -3486053)