Tender For S: Special Repairs To 4 Nos. 250 Tr Chiller Plants, Primary Motors And Secondary Motors With All Ahu And Fcu Units In Super Specialty Building Of Gmkms Hospital At Salem In Salem District
Tender Value
2.97 Crore
Estimated cost
Bid Submission
09 Oct 2026
13 days left
EMD
1.60 Lakhs
Bank guarantee accepted
Document Fee
Ref. Documents
Non-refundable
Tender Type
Online
Tender Overview
Organization
Tender ID
Competition Type
NCB
Bidding Type
Tender
Location / State
Salem → Tamil Nadu
EMD Exemption
Not Available
Quantity
Not Available
Website
Contact Person
Address
Project Description
Tender for S: Special Repairs To 4 Nos. 250 Tr Chiller Plants, Primary Motors And Secondary Motors With All Ahu And Fcu Units In Super Specialty Building Of Gmkms Hospital At Salem In Salem District
BOQ
| Sl. No. | Item Description |
| 1 | Renewal by supply and fixing of 250A Power contactor (Make:Siemens) & (Model: 3TF54) suitable for 250TR Chiller plant star delta connection with necessary wire connection complete.Contact resistance (millivolt drop / micro-ohm) test across closed poles, phase-to-phase and phase-to-earth insulation resistance (Megger) test, and full-load run test to verify balanced current draw and normal operating temperature (thermal scan) have to be done during the commissioning to verify the connection at normal operating temperature. |
| 2 | Renewal by supply and fixing of 250A Power contactor (Make:Siemens) & (Model: 3TF52) suitable for 250TR Chiller plant star delta connection with necessary wire connection complete. Contact resistance (millivolt drop / micro-ohm) test across closed poles, phase-to-phase and phase-to-earth insulation resistance (Megger) test, and full-load run test to verify balanced current draw and normal operating temperature (thermal scan) have to be done during the commissioning to verify the connection at normal operating temperature. |
| 3 | Renewal by supply, servicing and fixing of 440 V, 250 Amps Star delta starter links and Contacts with safe electrical isolation, lockout/tagout (LOTO), and de-energization of the starter cubicle by dismantling existing arc chutes, burnt/pitted fixed and moving power contact tips, and tarnished phase jumpers and thorough chemical cleaning and de-carbonization of the contact carrier blocks and arc chutes. And also mechanical gap adjustment, contact wiping action verification, and re-torquing of copper link connections with high-tensile hardware and Belleville/spring washers; cold mechanical and electrical operational check. |
| 4 | Renewal by supply and fixing of 3TR34 Contactor suitable for 3 HP condensing fan motor along with complete replacement of burnt power wiring, damaged control cables, containment trays, and associated termination accessories. |
| 5 | Renewal by supply and fixing of 3TR31 Contactor suitable for 3HP condensing fan motor along with complete replacement of burnt power wiring, damaged control cables, containment trays, and associated termination accessories. |
| 6 | Dismantling with prior disconnection and de-brazing of existing refrigerant hot gas discharge lines and liquid return lines and Loading of 250TR Old Air Cooled Chiller Unit with safe recovery pump-down of existing refrigerant in line with safety standards. Renewal by supply of New Air Cooled Chiller Unit for 250 TR capacity with following specification- Total No. of Tubes 672., No. of Circuit - 2 ., Shell Length -3050.,Shell Dia - 640mm, Thickness 8mm, Harden innergoorved Copper Pipe Dia 16mm, Thickness 1 mm. Water inlet & outlet size 8\\" , Gas inlet size 11/2\\"-2nos, Gas out let size 21/2\\" No Baffle 27nos, AFT Connection size 1\\", Drain Line size 1\\" - 2nos, Chiller fully insulated with 25mm thick Nitrile Rubber. Transportation of New Air Cooled Chiller Unit to site, unloading, handling, vertical lifting/shifting to the designated terrace/plant-room level and Commissioning with necessary rigging equipment. Pressurizing the entire circuit with Dry Nitrogen (OFDN) up to rated test pressure and 24-hour static nitrogen hold test to verify zero pressure decay (adjusted for ambient temperature fluctuations). |
| 7 | Post-leak-test deep evacuation down to ≤ 500 microns using a two-stage vacuum pump and digital vacuum gauge.Vacuum holding test, opening service valves/recharging required refrigerant, and full-load operational performance testing. Applying 25 mm thick Class 'O' closed-cell elastomeric nitrile rubber sheet insulation with factory-laminated or site-applied reinforced aluminum foil facing (Alupet / Glass Scrim Kraft - FSK) for Chiller barrel (shell-and-tube / flooded evaporator, suction header, water boxes, and associated cold shells). |
| 8 | Renewal by supply and fixing of Condenser coil Aluminium Finns thickness 0.14mm, 12/13 Finns per inch, 3/8\\" inner grooved copper tube thick 0.41mm, Size of the condenser is 40\\" Length x 78\\" Height, 4 Row coil arrangement proper welding leak testing and connect into condensing coil unit. Externally the Copper tube coated with anticorrosive paint to avoid rust formation due to atmospheric condition. |
| 9 | Renewal by supply and fixing of soft hard automation controlled board with Safety like HP, LP, OLP, Loading and unloading arrangement program setting by using Laptop and viewing of suction pressure, Discharge pressure, oil pressure, Suction Temperature, Discharge temperature, oil level sefty, current seafty, connections complete. (Micro control board). And also Replacement of damaged/burnt Current Transformers (CTs) with resin-cast metering/protection CTs of matching ratio, class, and burden. Replacement of heat-damaged terminal blocks with high-grade DIN-rail mounted polymide/polyester disconnect and feed-through terminals with end plates and partition barriers. Replacement and re-integration of defective Motor Protection Device (MPD) / Comprehensive Electronic Overload Relay. Replacement and re-wiring of Voltage Protection Device (VPD) / Phase Failure & Under/Over Voltage Relay. |
| 10 | i) Safety Interlocks & Trip Matrix: Hardwired and software interlock configuration for Chilled Water Flow Switch, Differential Pressure, Low Suction Pressure (LP), High Discharge Pressure (HP), Net Oil Pressure (OP), Compressor Overcurrent, Under/Over Voltage, Single Phasing (SPP), and Phase Reversal / Sequence Relay. ii) Compressor Sequencing: Modulated staging logic for Lead-Lag operation of both compressors based on Leaving Chilled Water Temperature (LWT) setpoint, run-hour equalization, and minimum anti-recycle/dwell timers. iii)Condenser Fan Modulation: Head pressure management logic controlling condenser fan motor staging/cycling via 4–20mA / 0–10V feedback from Danfoss AKS discharge pressure transmitters. iv)Electronic Expansion Valve (EXV) Integration: Master-slave communication/command integration with Danfoss EKE 1A superheat controller utilizing inputs from Danfoss AKS 32R ratiometric pressure transmitters and Danfoss AKS 3000 pressure /temperature sensors for precise valve opening control. |
| 11 | Renewal by supply and filling of 134A Refrigerant gas suitable for 125TR Screw Compressor Chiller Plant. |
| 12 | Renewal by supply and filling of BSE 170 Lubricant oil Bitzer make suitable for 125 TR Screw type compressor in Chiller plant. This oil is non-flammable and non-corrosion. |
| 13 | Renewal by supply and fixing of AKS 32 R Suction Pressure Sensor (Transducer) Danfoss Make suitable for 125 TR Screw type compressor in Chiller plant. |
| 14 | Renewal by supply and fixing of AKS 3000 Discharge Pressure Sensor (Transducer) suitable for 125 TR Screw type compressor in Chiller plant. |
| 15 | Renewal by supply and fixing of Model EKE 1A- (without control board) for Electronic Expansion valve pressure sensor operation Make Danfoss it will control the flow of Refrigerant suitable for 125 TR Screw type compressor in Chiller plant. |
| 16 | Renewal by supply and fixing of chill water Temperature sensor suitable for 125 TR Screw type compressor in Chiller plant. High-grade heat-conductive thermal paste for insertion into the thermowell to eliminate air pockets. Moisture-sealed IP65 terminal head or silicone/Teflon-jacketed shielded cable lead. Applying thermal compound inside the well for securing probes with compression glands/threaded retainers with dressing and routing shielded signal cabling back to the microprocessor panel and landing terminals cleanly with shield earthing at the panel end to prevent electrical noise. |
| 17 | Renewal by supply and fixing of 36\\" Fan Blade aluminium make suitable for 125 TR Screw type compressor in Chiller plant with High-strength, UV-stabilized, corrosion-resistant cast Aluminium alloy suitable for continuous high-temperature outdoor ambient exposure. |
| 18 | Renewal by supply and fixing of water Pressure gauge, Range 1 to 7 Kg/cm, SS Casing Glyserine filled gauge suitable for 125 TR Screw type compressor in Chiller plant. Make Wika or Equivalent. |
| 19 | Renewal by supply and fixing of 3 Phase, 3 HP Condenser fan motor (High Speed) with fan blade having High-strength, UV-stabilized, corrosion-resistant cast Aluminium alloy suitable for continuous high-temperature outdoor ambient exposure. connect to the condenser coil. |
| 20 | Renewal by supply and fixing of Differential Water pressure cutout switch Danfoss Make suitable for 250 TR Chiller plant. The switch operation with electrical connection and Routing, bending, and flaring high-pressure (LP side from cooler out, HP side from cooler in) copper sensing capillary lines with neat vibration loops (pigtail curls) to isolate hydraulic water hammer and chiller vibration. Assembling threaded brass/MS fittings using PTFE thread sealant tape and torquing flare nuts to ensure zero moisture weeping. |
| 21 | Renewal by supply and fixing of tyre Coupling full sets, machining work, Bed Modification, Laser/Dial Alignment & Commissioning of Tyre Coupling Assembly for Chilled Water suitable for 15 HP Primary Motor in 250TR Chiller plant. |
| 22 | Renewal by supply and fixing of tyre Coupling full sets, machining work,Bed Modification, Laser/Dial Alignment & Commissioning of Tyre Coupling Assembly for Chilled Water suitable for 50 HP Secondary Motor in 250TR Chiller plant. |
| 23 | Rewinding of the 15 HP (11 kW), 415V, 3-Phase Primary Chilled Water Pump Motor with removing, rewinding with copper winding, insulating the winding with varnish, changing the bearings and re-fixing in position with electrical connection complete suitable for 4x250TR Chiller plant. |
| 24 | Renewal by supply and fixing of New Chiller coil along with gas welding, Pressure Testing of New Chiller coil suitable for 15.25 TR (6100CFM) Air Handling Unit in Ground Floor AHU Room (coil size 6 Row coil. 1/2\\" copper pipe, size of the coil is 4 feet 2.5 inch Length x 2 feet 9.5 inch Height). Pressurizing the entire circuit with water up to rated test pressure and 24-hour static hold test to verify zero pressure decay. |
| 25 | Charges for complete Servicing High-Pressure Jet Washing Air Handling unit Evaporator coil by using Non-corrosive chemical and also Strainer with complete. |
| 26 | Renewal by supply and fixingof heavy-duty ground steel replacement Blower shaft , re-mounting and locking of forward/backward curved blower wheels, fitment of new precision bearings, dynamic balancing, laser/dial pulley alignment, and vibration-free commissioning inside the AHU / FCU blower compartment. |
| 27 | Renewal by supply and fixing of high-efficiency, washable synthetic non-woven polyester Pre-Filters suitable for arresting coarse atmospheric particulates, dust, and fiber lint in the primary filtration section of an Air Handling Unit. |
| 28 | Renewal by supply and fixing of 1.5 HP (1.1 kW) 3-Phase, 415 V, 50 Hz, 4-Pole (approx. 1440 RPM), TEFC, Foot-mounted (B3) Squirrel Cage Induction Motor suitable for Air handling unit with necessary wire connection complete. |
| 29 | Renewal by supply and fixing of 2.0 HP (1.5 kW) 3-Phase, 415 V, 50 Hz, 4-Pole (approx. 1440 RPM), TEFC, Foot-mounted (B3) Squirrel Cage Induction Motor suitable for Air handling unit with necessary wire connection complete. |
| 30 | Renewal by supply and fixing of 3.0 HP (2.2 kW) 3-Phase, 415 V, 50 Hz, 4-Pole (approx. 1440 RPM), TEFC, Foot-mounted (B3) Squirrel Cage Induction Motor suitable for Air handling unit with necessary wire connection complete. |
| 31 | Renewal by supply and fixing of 5.0 HP (3.7 kW) 3-Phase, 415 V, 50 Hz, 4-Pole (approx. 1440 RPM), TEFC, Foot-mounted (B3) Squirrel Cage Induction Motor suitable for Air handling unit with necessary wire connection complete. |
| 32 | Renewal by supply and fixing of 7.5 HP (5.5 kW), 3-Phase, 415 V, 50 Hz, 4-Pole (approx. 1440 RPM), TEFC, Foot-mounted (B3) Squirrel Cage Induction Motor suitable for Air handling unit with necessary wire connection complete. |
| 33 | Renewal by supply and fixing of 20 HP (15 kW), 3-Phase, 415 V ±10%, 50 Hz, 4-Pole (~1440 RPM), Foot-mounted (IM B3), TEFC Squirrel Cage Induction Motor suitable for Air handling unit with necessary wire connection complete. |
| 34 | Renewal by supply and fixing of high-performance Three-Layer Thermal Insulation (Bitumin layer, 50mm Nitrile insulation layer polythene layer with chicken mesh) for HVAC chilled water (CHW) / dual-temperature inlet and outlet piping (headers, run-outs, and AHU coil connections). |
| 35 | Charges of Electrical Panel for deep vacuum cleaning, degreasing, de-carbonization, and dust removal using industrial non-conductive electrical cleaning solvents; mechanical surface preparation (derusting/sanding) of corroded panel casing, frame, and cable entry glands; structural repair/replacement of damaged enclosure panels, doors, hinges, and gaskets; high-grade anti-corrosive primer application and dual-coat polyurethane (PU) / epoxy finishing paint to restore IP rating and aesthetics. |
| 36 | Charges for Leak Arresting and Pressurization of the High side and Low side refrigeration cycling by using Dry Nitrogen (OFDN) at rated test pressure, holding pressure statically for 24 hours, followed by soap-bubble/electronic joint inspection to arrest the leakage by gas welding. Finishing & Connection by Deep evacuation down, vacuum decay hold test, opening isolation valves /reconnecting to system, and operational performance check under load. |
| 37 | Decommissioning, Rigging, Transit, Complete Workshop Overhaul, Motor Rewinding, Re-assembly, Reinstallation & Leak Testing of 125 TR Screw Compressor (Make: BITZER) (MODEL-12512) and Renewal of all connection with check the micron level below 300 micron setting gasket, Roller & ball bearing, oil filter, Groved nut for Male & Female and Lip seal , sensors are connect and filling of Oil and fixing into bed conecting all refrigerant line. |
| 38 | Charges for specialized chemical descaling rust removal service for shell-and-tube flooded Chiller bundle (evaporator/condenser) using non-destructive, copper-safe inhibited chemical solvent. Scope includes:Isolation, opening of water boxes, inspection, and high-pressure nylon-brush rotary mechanical cleaning to remove loose scale and debris. Supply of specialized inhibited descaler (solid-grade Inhibited Sulfamic Acid formulated Organic-Chelating solution with Rhodine copper-passivating inhibitors, strictly non-hydrochloric). |
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AI Tender Summary
Tender Timeline
Sep 24, 2026
11:30 IST
Tender Published
Tender notice published.
CompletedOct 09, 2026
17:00 IST
Bid Submission Deadline
Online submission via eProcurement portal.
Upcoming · 13 daysOct 09, 2026
Bid Opening Date
Technical bids will be opened and evaluated.
Upcoming · 13 daysTender Documents
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