Replacement of AHU and interconnection of chilled water pipeline network of Old DTB ITB with pipeline of T2 NITB at NSCBI Airport Kolkata

Supply , Installation , Testing and Commissioning of factory built floor mounted chilled water double skin type horizontal/ vertical air handling units made of 25mm thick panels consisting of pre plasticized G.I. casing of thickness 0.8 mm outside layer and 0.8 mm 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, minimum 2 bend GSS/ PVC eleminators, cooling coil section with aluminium finned copper tubes ( tubes thickness not less than 0.5mm ) cooling coil of 6 row deep, filter section with 50mm thick metal viscous / washable synthetic type air prefilters, belt drive package with TEFC drive motor of efficiency class IE3 suitable for 415+-10% volts, 50Hz, 3 Phase AC supply suitably designed for variable frequency drive applicastions , drain connections, stainless steel (18G) drain pan with PUF insulation, 150 mm dia. dial type pressure gauges (2 nos.) and industrial type thermometers (2 nos.) at the inlet and outlet of coil, auto purge valve whererver required, necessary vibration isolation arrangement, necessary Civil work etc. complete as per specification along with integration with the existing BMS system and of following capacities. 24000 CFM @ 50mm of WC

Dismantling , Removal & Disposal of the existing Air Handling Unit of different capacities and shifting the same to the AAI store & clearing the site in all respect as per instruction of EIC etc. complete as required.

Supply & Fixing of PN 16 Rating 200 mm Gear Operated Butterfly Valve for Chilled Water Line complete etc. as required.

Supply & Fixing of PN 16 Rating Valves 100 mm Handlever Operated Butterfly Valve for Chilled Water Line complete etc. as required.

Supply & Fixing of PN 16 Rating Valves 80 mm Handlever Operated Butterfly Valve for Chilled Water Line complete etc. as required.

Supply & Fixing of PN 16 Rating Valves 150 mm Handlever Operated Butterfly Valve for Chilled Water Linecomplete etc. as required.

Chilled WATER PIPING (MS HEAVY CLASS): Supply, design, fabrication and erection of MS heavy class "C" ERW pipe in accordance to IS-1239/3589 standards including providing necessary quantities of flanges, fittings, bends, elbows, gasket, nut-bolts etc. Also Supply and Fixing of TF quality 50 mm 20 Kg/cub cm density Thermocol Insulation with Sand Cement Plaster. 200 mm

Chilled WATER PIPING (MS HEAVY CLASS): Supply, design, fabrication and erection of MS heavy class "C" ERW pipe in accordance to IS-1239/3589 standards including providing necessary quantities of flanges, fittings, bends, elbows, gasket, nut-bolts etc. Also Supply and Fixing of TF quality 50 mm 20 Kg/cub cm density Thermocol Insulation with Sand Cement Plaster. 150 mm

Chilled WATER PIPING (MS HEAVY CLASS): Supply, design, fabrication and erection of MS heavy class "C" ERW pipe in accordance to IS-1239/3589 standards including providing necessary quantities of flanges, fittings, bends, elbows, gasket, nut-bolts etc. Also Supply and Fixing of TF quality 50 mm 20 Kg/cub cm density Thermocol Insulation with Sand Cement Plaster. 100 mm

Chilled WATER PIPING (MS HEAVY CLASS): Supply, design, fabrication and erection of MS heavy class "C" ERW pipe in accordance to IS-1239/3589 standards including providing necessary quantities of flanges, fittings, bends, elbows, gasket, nut-bolts etc. Also Supply and Fixing of TF quality 50 mm 20 Kg/cub cm density Thermocol Insulation with Sand Cement Plaster. 80 mm