REPLACEMENT OF EXISTING SCRAPPED HVAC SYSTEM WITH NEW MICROPROCESSOR BASED CHILLED WATER PLANT AT BHARAT SANCHAR BHAWAN, JANPATH, ND. SH SITC of 3 X 100 TR Air Cooled Chiller and associated work

Sub Head -I

Mechanical Refrigeration Type Chillers: Supplying, installing, testing & commissioning of factory assembled, terrace mounted air Cooled water chilling package, having capacity not less than 100 TR (3,00,000 K. Cal/ hour) at outside design condition of 110 °F DB & 75 °F WB and complete unit mounted on a structural steel base and comprising of the following:- a) Direct electric motor driven screw type compressor (Semi hermetically/ hermetically sealed complete with automatic capacity control) suitable for operation on refrigerant R-134a i/c capacity control devices, safety switches, speed increasing gears, force feed lubrication system etc. as per specifications. b) Squirrel cage type induction motor of matching H.P. rating suitable for 415 volts (+ 10% variation), 3 phase 50 Hz A.C. supply i/c starter complete as per specifications. c) Lubrication device consisting of automatic electric pump, oil cooler, head tank, oil strainer, automatic pressure regulating valve, oil heater, thermal switch etc. Complete as per specifications. d) Matching Air Cooled condenser with integrally finned copper tubes and aluminium fins with hydrophobic coating for corrosion control. The condenser fans are propeller type of heavy duty, direct driven, slow speed 3 phase, positioned for vertical discharge, all weather proof internally protected against overload & other safety devices, controls as per specifications. The fan shall provide proper air flow on the entire condenser coil area. The fan guard & coil guard should also be provided. e) Matching direct expansion / flooded type, horizontal, shell & tube type water chiller with finned copper tubes having thermal insulation complete as required. f) Electronic expansion valve, replaceable drier core filters, liquid line shut

off valve, strainers, sensors etc. as per standard equipment of manufacturer and as per specification requirements. g) Necessary copper refrigerant piping, valves, fittings, connections, controls etc. complete as required. h) Initial charge of oil and refrigerant as required. i) Suitable Structural steel base/platform at the roof floor & vibration isolators complete as per site requirement/direction of Engineer-in-charge. j) Thermal insulation of the unit as per specifications. k) Painting of unit with synthetic enamel paint as per approved colours. l) Chilled water valves such as two Nos. butterfly valves, one No. balancing valve shall be provided with each unit. The unit shall be connected to pipe through Expansion Bellow joint. m) Water pressure gauges and thermometers for Chilled water lines. n) Providing package mounted microprocessor based control (PLC) for the group operation of the water chilling packages covering the complete range of functions viz., safety controls, operating controls, safety interlocks with necessary tell-tale indications and alarm facility as required. Microprocessor based control console with network communication card i/c interconnected wiring of all machines etc. o) Package mounted Electrical control panel having suitable size of incoming MCCB, outgoing MCCB's complete with suitable starters for compressor motors along with No volt coil, overload releases & single phase preventing devices, other safeties & controls, Electrical wiring and interconnecting control wiring for motors, starters & protective devices. p) Internal power armoured cables of suitable sizes complete with connection to Electrical motor starter from package mounted electrical panel is also covered with earthing, control wire etc. complete as required.

NOTE : A.The water chilling package units shall be so as to meet the following requirements : i.Leaving chilled water temperature 6.67 °C Ii.Entering chilled water temperature 12.2°C (Temperature gradient 5.5°C shall be maintained). iii.Chilled water flow rate 250 USGPM (2.5 USGPM / TR) iv.Chiller fouling factor 0.0001 h.m2.c/kcal v.Outside design conditions for Chilling package - 110°F DB & 75°F WB B.Tenderers must indicate IKW/Ton at full load and partial loads and should submit catalogue of machine proposed. C.The Chilling machine having capacity less than 100 TR at outside design conditions are not acceptable. D. Items required to integrate proposed system with the existing system shall be provided by the firm without extra cost.

CHILLED WATER PUMPSETS (PRIMARY) Supply, Installation, Testing and Commissioning of weather proof horizontal split casing centrifugal pump set factory assembled and tested for rated efficiency having bronze impeller & mechanical seal complete with EFF-1, TEFC squirrel cage induction motor with class 'F' insulation, epoxy painted common base frame, flexible coupling, coupling guard, mechanical seals, vibration isolation arrangement etc.complete as required for recirculation of chilled water for the central air conditioning system as per the specifications. The pumps shall be suitable for operation on 415±10% Volts, 50 Hz, 3 Phase AC power supply. Pumps shall be insulated as per the specifications. The pump characteristics shall be as follows : Chilled Water Flow Rate : 275 USGPM Head : 65 M NOTE: 1. One pump for each chilling machine has been proposed.

VARIABLE SPEED PUMPING SYSTEM (SECONDARY) A) Supply, Installation, Testing and Commissioning of horizontal split casing centrifugal pump sets factory assembled and tested for rated efficiency complete with EFF-1, TEFC squirrel cage induction motor with class 'F' insulation, epoxy painted common base frame, flexible coupling, coupling guard, mechanical seals, vibration isolation arrangement etc. complete as required for recirculation of chilled water for the central air conditioning system as per the specifications. The pumps shall be suitable for operation on 415±10% Volts, 50 Hz, 3 Phase AC power supply. Pumps shall be insulated as per the specifications. The pump characteristics shall be as follows : Chilled Water Flow Rate : 275 USGPM Head : 65 M

B) Dedicated micro processor based pump controller suitable for 6 no. pumps. Software duly down loaded in pump controller. It includes cost of variable frequency drive( IP 20) - 6 no. in IP-54 Enclosure. Secondary Circuit chilled water pumps shall be complete with variable frequency drive, dedicated logic controller downloaded with parallel pumping software, differential pressure sensor/transmitters of approved make. System shall be complete with all accessories to make it functional and compatible with the building management system.

Providing and fixing of differential pressure sensor in Chillers/ chilled water lines in making suitable mounting arrangement complete as required

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 following closed cell elastometric nitrile rubber of minimum 45 Kg / cu m density, thermal conductivity 0.037 W/MK or better at 20 deg mean temperature class 'O' insulation applied by suitable adhesive complete including repairing of damage to building etc. as per specifications and as required complete in all respect. Note:- The Pipes of sizes 150mm & below shall be M.S. 'C' class as per IS : 1239

100mm dia.(32mm thick insulation)

25mm dia.(19mm thick insulation)

Supplying, fixing, testing and commissioning of following valves, strainers, gauges in the chilled water plumbing duly insulated to the same specifications as the connected piping and adequately supported as per specifications.

BUTTERFLY VALVE (MANUAL) with C I body SS Disc, Nitrile Rubber Seal & O- Ring PN 16 pressure rating for chilled water circulation as specified

125mm dia.

100mm dia.

125mm dia. Y - STRAINER of Ductile CI Body flanged ends with stainless steel strainer for chilled / hot water circulation including insulation as specified.

125mm dia. BALANCING VALVE WITH BUILT IN MEASURING FACILITY with C I body flanged construction with EPDM coated disc with long pitch with protected out pipe insulation & PN 16 pressure rating for chilled/ hot water circulation as specified.

125mm dia. NON - RETURN VALVE with duel plate of C I body SS plates vulcanized NBR seal flanged end & PN 16 pressure rating for chilled / hot water circulation including insulation as specified.

Providing & fixing in position the mercury in glass industrial type thermometers.

Providing and fixing in position the industrial type pressure gauges with gun metal / brass valves etc. complete as required.

Providing and fixing in position the Auto Air Vent-20 mm dia. complete as required.

Providing and fixing of Flow Switch in Chilled water lines in making suitable mounting arrangement complete as required.

Supplying and installing following size of perforated Hot Dipped Galvanised Iron cable tray (Galvanisation thickness not less than 50 microns) with perforation not more than 17.5%, in convenient sections, joined with connectors, suspended from the ceiling with G.I. suspenders including G.I. bolts & nuts, beyond 10 Meters etc. complete as required.

150 mm width X 50 mm depth X 1.6 mm thickness

300 mm width X 50 mm depth X 1.6 mm thickness

Supplying & laying of 1.1 KV grade, XLPE insulated, armoured and sheathed aluminium conductor cables confirming to IS: 1554 Part-I 1964 of 3½ X 240 sq. mm size including providing & making cable termination by crimping joints as required, for interconnecting the equipment / motor and switch-boards as required at site. Suitable clamping arrangement shall be provided for cables to be fixed on walls / Cable trays / racks where necessary. Suitable cable glands shall also be provided for all cable terminations.

Providing and fixing 25 mm X 5 mm G.I. strip on surface or in recess for connections etc. as required.

Providing and fixing 6 SWG dia G.I. wire on surface or in recess for loop earthing as required.

Dismantling of 3 Nos. 100 TR Chillers alongwith existing steel structure from the roof floor, 11 Nos. Chilled water pump sets, chilled water piping, Valves, Strainers etc. damaged parts of existing HVAC System including disconnecting from supply main, cutting & disconnecting the existing piping connections & store at the place directed by Engineer-in charge etc. Complete as required.

Sub Head -II

MAINTENANCE AFTER WARRANTY PERIOD Comprehensive maintenance of complete HVAC System on yearly basis after expiry of free maintenance of 12 months under warranty period.

1st year after expiry of 12 months free warranty period

2nd year after expiry of 12 months free warranty period

3rd year after expiry of 12 months free warranty period

4th year after expiry of 12 months free warranty period

5th year after expiry of 12 months free warranty period

SPECIAL CONDITIONS OF CONTRACT 1. In case OEM is directly bidding for the tender OEM will give a confirmation that they will provide after sales support for TEN years. 2. The tenderer will have to produce an authorization letter of OEM specific to this tender to quote against this tender on printed letter head in ORIGINAL of the OEM. 3. OEM will also confirm in the same letter that they will be directly responsible to provide after sales support for TEN years. 4. It is mandatory to fill the technical sheet. 5. It is mandatory that tenderer should visit the site, assess all foreseeable difficulties and quote rates accordingly. Rates should final and all inclusive. 6. Maintenance schedule to be submitted along with the offer. 7. The main contract that is for Sub Head- I shall be concluded on successful supply installation, Testing & Commissioning of systems. For Comprehensive maintenance work (Sub Head - II), Supplementary Agreement will be drawn with the EE (E) concerned. 8.Manpower will be deployed by the agency at site to rectfy the complaints and for co-ordination for the work. For this, one mobile no. with whatsapp facility will be provided by the agency. 9. Adequate inventory of material will be kept at site by the agency for prompt attending the complaint. 10. Complaint received in Fore Noon will have to be attended by After Noon and complaints received in Afternoon will have to be attended by Forenoon of next day. Emergency complaints, if any, will have to be attended immediately at any time including odd hours. 11. The Agency should quote amount keeping in view all Statutory requirements including minimum wages/ESI/EPF etc.

Note:- 1. The Agency has to submit police verification record & ID proof of each staff. 2. The firm shall provide each staff with working cell phone. 3. The operators may be deputed for duty as per instruction of concerned SDE (E)/JTO (E). 4. The GST / other Input Tax Credit (ITC) taxes shall be quoted by the firm as applicable as per latest amendments of GST Rules. 5. The contractor shall provide correct tariff heads & other details to enable BSNL claim Input Tax Credit. 6. Bidder must mandatorily quote for all GST components (CGST, SGST, and IGST) as required. 7. If annual maintenance contract charges are required to be quoted as per SOW, basic charges should be shown in column 5 & the Goods and Service Tax (GST) in column 7 to 9 & 12 to 14. 8. The bidder who submits the offer with concessional Goods and Service Tax (GST) shall submit the proof of applicable concessional GST. In case the Concessional GST is not creditable to BSNL it should be included in the price of the goods/services. 9. In case, dealer is registered under compounding scheme or any rule/notification where the BSNL is not eligible for input tax credit then the bidder should not disclose any amount in column 7 to12 & 14. 10. % age Rate of FF & Packing should be shown of basic unit price excluding all taxes & charges (i.e. as %age of col.4). 11. The FF & packing amount quoted shall not be subject to change after bid evaluation /ordering on account of change of copper, lead base price, change in duties & taxes of item etc. 12. Bidder must mandatorily mention HSN & SAC numbers. 13. Evaluation of bids: - The evaluation and comparison of responsive bids shall be done on the basis of Net cost to BSNL on the prices of the goods & Services (i.e. complete work) offered along with all applicable Taxes, packing Forwarding Freight & Insurance charges etc. exclusive of GST. Declaration by Bidder 1. We hereby declare that in quoting the above prices, we have taken into account the entire credit on inputs available under the GST Act introduced w.e.f. 1 July 2017 and further extended on more items till date. 2. We hereby certify that HSN/SAC shown in column 17 are correct & credit of GST for the amount shown in column 14 above are admissible as per GST Laws. Name of bidder: Seal of Company: GST No./(s)

Blue Star Limited

HV AIRCONDITIONING SYSTEMS PVT. LTD.