Public Works Department Tender

Supply and fixing of water drain pipe line

Supply, Installation, Testing and commissioning of Fire damper of GI sheet operated by fusible links.

150 mm dia (32 mm thick insulation)

Supplying, laying/ fixing, testing and commissioning of following nominal sizes of chilled water piping 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 and pipes size above 150mm shall be welded black steel pipe heavy class as per IS: 3589, from minimum 6.35mm thick M.S. Sheet for pipes upto 350 mm dia. and from minimum 7mm thick MS sheet for pipes of 400 mm dia and above.

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

Supply, Installation,Testing and Commissioning of Flow switches for condensers and chillers

1.25 mm

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.

Supply, installation, balancing and commissioning of factory fabricated GSS sheet metal rectangular ducting complete with neoprene rubber gaskets, elbows, splitter dampers, vanes hangers, supports etc. as per approved drawings and specifications of following sheet thickness complete as required.

Supplying & fixing of powder coated extruded aluminium Return Air Grills with louvers but without volume control dampers complete as required.

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

100 mm dia

NON - RETURN VALVE with dual 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. 150 mm dia

Supply, Installation,Testing and Commissioning of Balancing valves for condensers. 200 mm

Supplying, fixing testing commissioning of Return air diffusers of powder coated aluminium without volume control dampers with anti smudge ring & removable core.

Supply, Installation,Testing and Commissioning of Variable Frequency Drive arrangement for the secondary pump motors - consisting of adjustable frequency drive (AFD) and Pressure sensors / transmittors for each pump. The pumps and VFD must be compatible. Pump capacity 39 LPS at 32 mts. w.g. total head.

Supply, Installation, Testing and Commissioning of High Efficiency Water cooled Screw type chiller fitted with Star Delta Starter as per specifications. The capacity of the chilling package shall be 125 TR each, at the duty conditions of 12ºC to 7ºC chilled water and 32.2 ºC to 36.4ºC condenser water temperatures. The quoted price shall include customs and other duties at full rate; all local taxes, levies etc. that are applicable; port clearance, warehouse charges, handling, transportation to site; rigging, installation, testing, commissioning and handing over.

Supply, Installation,Testing and Commissioning of automatic air purge valves of size : 20 mm dia

1.00 mm

0.63 mm

0.80 mm

125 mm dia

Y - STRAINER of Ductile CI Body flanged ends with stainless steel strainer for chilled / hot water circulation including insulation as specified.150 mm dia

Supply and fixing of acoustic lining of supply air duct and plenum with 25 mm thick resin bonded glass wool having density of 32 kg/m³, with 25 mm X 25 mm GI section of 1.25 mm thick, at 600 mm centre to centre covered with Reinforced Plastic tissue paper and 0.5 mm thick perforated aluminum sheet fixed to inside surface of ducts with cadmium plated nuts, bolts, stick pins, CPRX compound etc. complete as required and as per specifications.

Supplying and fixing of following thickness duly laminated aluminum foil of matt finish closed cell Nitrile rubber (Class “O”) insulation on existing duct after applying suitable adhesive for Nitrile rubber. The joints shall be sealed with 50 mm wide and 3 mm thick self adhesive nitrile rubber tape insulation complete as per specifications and as required.

Supply Installation Testing and Commissioning of primary chilled water pump having a capacity of 39 LPS at 12 mts. w.g. total head.

Supply and fixing of acoustic lining for initial portion of supply air ducts with open cell nitrile rubber sheet of minimum density 140 kgs/cub. mt. and 10 mm thick, with fire retardant and anti microbial properties as per the Technical Specifications. The rubber sheet shall be firmly fixed to the inside of the duct with suitable adhesive and bolted down at intervals.

Supply, Installation,Testing and Commissioning of closed expansion tank of MS sheet construction and fitted with synthetic membrane, with steel mounting frame and insulated with 50 mm thick eps slabs, wire netting and cement plastering, and pressurisation system with two pumps, one working, one standby, pressure switch, isolating valves and pressure gauges, all mounted on a steel frame, finished with epoxy paint. Make-up water piping from the overhead tank is also to be provided. Tank capacity 1000 lts.

125 mm

Supply Installation Testing and Commissioning of secondary chilled water pump having a capacity of 39 LPS at 32 mts. w.g. total head.

Supply, Installation, Testing and Commissioning of Chiller Plant Manager for remote operation and monitoring of Chillers, Cooling Tower Fan Motors, Condenser Water Pumps, Primary and Secondary Chilled Water Pumps.This shall be compatible with BMS.

BUTTERFLY VALVE (MANUAL) with C I body SS Disc, Nitrile Rubber Seal & O- Ring PN 16 pressure rating for chilled water/ hot water circulation as specified a. 150 mm dia

HVAC System (Internal) Supply, Installation, Testing and commissioning of factory built Floor Mounted chilled water double skin type horizontal air handling units made of 25 mm thick panels consisting of pre plasticized G.I. casing of thickness 0.8mm outside layer and 0.8mm inside layer with polyurethane foam (PUF) insulation factory injected between them by injection moulding machine, complete with blower section with blower suitable for static pressure as required, cooling coil section with aluminium finned copper tubes (tubes thickness not less than 0.5 mm) cooling coil of 6 row deep, filter section with 50 mm thick metal viscous/ washable synthetic type air prefilters, belt drive package with TEFC drive motor of efficiency class IE3 suitable for 415 ± 10% V, 50Hz, 3 Phase AC supply suitably designed for variable frequency drive applications, drain connections, stainless steel (18G) drain pan with PUF insulation, 150 mm dia. dial type pressure gauges (2 Nos.)and industrial type thermometres (2 Nos.) at the inlet and outlet of coil, autopurge valve wherever required, necessary vibration isolation arrangement etc. complete as per specification and of following capacities. - 37500 CFM

Supply, Installation, Testing and commissioning of Fresh air intake with cowl, wire netting, pre filter and Volume Control Damper of GI sheet

Supply, installation, testing and commissioning of GI volume control duct damper complete with neoprene rubber gaskets, nuts, bolts, screws linkages, flanges etc., as per specifications..

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.150 mm 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.: 80 mm

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

Supplying, laying/ fixing, testing and commissioning of following nominal sizes of chilled water piping 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.

Supply, Installation, Testing and commissioning of CO2 Sensor and Damper Motor actuated by the Sensor for the Fresh Air Dampers for AHU areas

Supply, installation, testing and commissioning of Condenser water piping of GI 'C' class pipes and fittings as per the Technical Specifications. Sizes: 200 mm

Supply, Installation, Testing and commissioning of Ball valves in the chilled water pipe lines, including necessary fittings like flanges, reducers, tees and fasteners, and insulating the valves, after pressure testing as per the specifications for the chilled water piping 40 mm

Supply, Installation, Testing and Commissioning of 300 TR capacity induced draft cooling tower, while operating at 28 deg C ambient WB temperature. The cooling tower must be sized for handling 223 cubic metres per hour water flow at a temperature difference of 4.2 deg C.

125 mm dia (50 mm thick insulation)

BUTTERFLY VALVE (MANUAL) with CI body SS disc nitrile sheet & O - ring & PN 16 pressure rating as specified. 200 mm

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

19 mm thick insulation

NON - RETURN VALVE with dual plate of CI body SS plates vulcanized NBR seal flanged end & PN 16 pressure rating as specified. 200 mm

100 mm

200 mm dia (32 mm thick insulation)

Y - STRAINER of Ductile CI Body flanged ends with stainless steel strainer for chilled / hot water circulation including insulation as specified.80 mm

Supply, Installation,Testing and Commissioning of Y- type strainer with fittings. 200 mm