Public Works Department-PWD has published Repair Maintenance Of Electrical And Mechanical Services At Chacha Nehru Bal Chikitshyalaya, Delhi. Sub Head Replacement Of Old And Unserviceable Air Washer For Kitchen And Basement Exhaust System. Submission Date for this Tender is 11-07-2022. Washers Tenders in delhi Delhi. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 05-Jul-2022 | Datecorrigendumnit_110 | Date | 11-07-2022 |
| Sl. No. | Item Description |
| 1 | Supply, Installation, Testing and commissioning of factory built floor mounted double skin typehorizontal/verticalExhaust air system units made of 25mm thick panels consisting of pre plasticized G.I. casing of thickness 0.6mm outside layer and 0.6 mminside layer with polyurethane foam (PUF) insulation factory injected between them by injection molding machine, complete with SISW Backward curved centrifugal blower of following capacity suitable for static pressure as mentioned below, directly coupled with suitable rating TEFC motor of efficiency class IE2 suitable for operation on 415V, 50Hz, 3 Phase AC supply suitably designed for operation with variable frequency drive, motor and bearing of blower shall be outside the air stream, necessary vibration isolation arrangement etc. complete as per specification i/c dismantling the existing worn-out exhaust air system, making good the damages and credit for old dismantle material under buy back. |
| 2 | a) Air Qty-18000 CMH at 80mm static pressure |
| 3 | Supply, Installation, Testing and commissioning of factory built floor mounteddouble skin type horizontal/verticalair washer system units made of 25mm thick panels consisting of pre plasticized G.I. casing of thickness 0.6mm outside layer and 0.6 mm plain GI inside layer with polyurethane foam (PUF) insulation factory injected between them by injection molding machine complete with 50 mm thick prefilter with synthetic & washable media in Aluminium frame, 200 mm deep cellulose pad for adiabatic cooling, GI/ FRP spray distributor, mono block pump of suitable rating with GI/CPVC pipe suction & discharge line, 20 Gauge SS-304 sump with supply, quick fill & make up with float valve, overflow & drain connections, two bend PVC eliminator DIDW centrifugal Farward curved fans blower driven by TEFC squirrel cage AC induction motor of IE-2 efficiency suitable for 415 volts, 50Hz, 3 Phase AC supply with chain pulley arrangement, suitably designed for operation with VFD operation, anti vibration mountings to avoid transmission of vibration, Fan outlet will be connected with fire retardant lint free canvas connection i/c dismantling the existing worn-out air washer system, making good the damages and credit for old dismantle material under buy back. |
| 4 | a) 30000 CMH at 50mm wg static pressure |
| 5 | Supplying& fixing/laying of following sizes of 1.1 KV grid multicore copper conductor XLPE insulated and fire retardant PVC sheathed armoured cable as per IS 7098 (part-1)1988 on surface of wall/ceiling/on existing cable tray complete as required. |
| 6 | a) 4Cx10 Sqmm |
| 7 | Supplying and installing following size of perforated Hot Dipped GalvanisedIron 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, etc. as required. |
| 8 | a) 100 mm width X 50 mm depth X 1.6 mm thickness |
| 9 | Supply, laying, fixing, testing and commissioning ofrigid PVC drain waterpiping complete with fittings & support etc as required |
| 10 | a) 25mm dia |
| 11 | a) 32mm dia |
| 12 | Supply and Fixing of Ball valve Made from Gun metal casing and SS-304 stem complete etc as reqd at site |
| 13 | a) 25mm dia |
| 14 | a) 32mm dia |
| 15 | Supply, and fixing flexible convass duct connector between air handling unit and duct to avoid transfer of viberation from AHU to duct. flexible connector will have GI flange on both side with gasketing. connector will be with duct and AHU with nut and bolts of suitable size complete etc as reqd at site. |
| 16 | Supplying, Installation, testing and commissioning of11 KW capacity fully automatic star delta starterpanel in sheet steel enclosure complete with contactors, O/L relay, push buttons etc. suitable for 3phase, 415 Volts, 50 Hz AC supply with necessary accessories complete etc as required at sitei/c dismantling the existing worn out starter, making good the damages, credit old dismantled materials under buy back. |
| 17 | Supply, Installation, Testing and Commissioningof following capacity VFDcapable to operating on the AC Supply Voltage applicable to the end site with suitable tolerance for variations in the incoming mains power supply, applicable supply voltage range of 380 – 480 VAC ± 10%, capable of continuous operation with the connected load with up to 3% voltage imbalance between the incoming phases, capable of operating with a mains supply frequency range of 50 – 60Hz ± 2% & variable frequency output in the range of 0 – 500Hz and variable voltage in the range of 0 – Supply Voltage, controlling the motor with a constant or variable torque output characteristic in order to operate the desired load, selectable constant and variable torque operation by parameters having protection features to protect the motor from overloaded condition, minimum IP55 rating including connections etc. as required. a) 11.0 Kw |
| 18 | Supply, installation, balancing and commissioning of factory fabricated GSS sheet metal rectangular/round 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. |
| 19 | a) Thickness 0.63 mm sheet |
| 20 | b) Thickness 0.8 mm sheet |
| 21 | 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 |
| 22 | Supplying & fixing of powder coated extruded aluminium Return Air Grills with louvers but without volume control dampers complete as required. |
| 23 | Supplying, fixing testing commissioning of supply air diffusers of powder coated aluminium with aluminium volume control dampers with anti smudge ring & removable core. |
| 24 | Supply, and fixing of Aluminium cladding of 0.6mm thickness on existing insulated chilled water pipe line and evaporators of chillers complete etc as required at site |
| 25 | Credit for old dismantled material under buy back including dismantling of worn out material, making good the damages etc.as reqd. |
| 26 | a) GI Sheet |
| 27 | i) Thickness 0.63 mm sheet |
| 28 | ii) Thickness 0.8 mm sheet |
| 29 | iii) Thickness 1.0 mm sheet |
| 30 | b) Control duct damper |
| 31 | c) Aluminium Air Grill |
| 32 | d) Diffuser |
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