Supply, Installation, Testing and Commissioning of Ventilation System including Ductwork and Associated Accessories for INRPK, Kalpakkam

Propeller Fan – Supply (500 CMH): Supply, installation, testing and commissioning of heavy-duty wall-mounted propeller fan of 500 CMH capacity at 5 mm WC, complete with single-phase TEFC motor, direct drive, epoxy-coated MS casing, die-cast aluminium impeller on EN-8 shaft, and heavy-duty ball bearings, suitable for continuous operation with fan speed < 1000 RPM. Includes wall cowl with bird screen, safety guard, anti-vibration pads, electrical wiring with plug top, and all accessories. Fan shall conform to IS:2312/1967 and be tested as per IS 3588:1987 and AMCA 203, 210 & 300. Motor rating based on cold start, complete as per specifications.

Propeller Fan – Supply (700 CMH): Supply, installation, testing and commissioning of heavy-duty wall-mounted propeller fan of 500 CMH capacity at 5 mm WC, complete with single-phase TEFC motor, direct drive, epoxy-coated MS casing, die-cast aluminium impeller on EN-8 shaft, and heavy-duty ball bearings, suitable for continuous operation with fan speed < 1000 RPM. Includes wall cowl with bird screen, safety guard, anti-vibration pads, electrical wiring with plug top, and all accessories. Fan shall conform to IS:2312/1967 and be tested as per IS 3588:1987 and AMCA 203, 210 & 300. Motor rating based on cold start, complete as per specifications.

Propeller Fan – Exhaust (700 CMH): Supply, installation, testing and commissioning of heavy-duty wall-mounted propeller fan of 500 CMH capacity at 5 mm WC, complete with single-phase TEFC motor, direct drive, epoxy-coated MS casing, die-cast aluminium impeller on EN-8 shaft, and heavy-duty ball bearings, suitable for continuous operation with fan speed < 1000 RPM. Includes wall cowl with bird screen, safety guard, anti-vibration pads, electrical wiring with plug top, and all accessories. Fan shall conform to IS:2312/1967 and be tested as per IS 3588:1987 and AMCA 203, 210 & 300. Motor rating based on cold start, complete as per specifications.

Propeller Fan – Exhaust (1000 CMH): Supply, installation, testing and commissioning of heavy-duty wall-mounted propeller fan of 500 CMH capacity at 5 mm WC, complete with single-phase TEFC motor, direct drive, epoxy-coated MS casing, die-cast aluminium impeller on EN-8 shaft, and heavy-duty ball bearings, suitable for continuous operation with fan speed < 1000 RPM. Includes wall cowl with bird screen, safety guard, anti-vibration pads, electrical wiring with plug top, and all accessories. Fan shall conform to IS:2312/1967 and be tested as per IS 3588:1987 and AMCA 203, 210 & 300. Motor rating based on cold start, complete as per specifications.

Tube Axial Fan – Exhaust (3000 CMH): Supply, installation, testing and commissioning of heavy-duty wall/duct-mounted tube axial exhaust fan of 3000 CMH air flow capacity at 10 mm WC static pressure, complete with reputed make single-phase / three-phase TEFC motor (as specified), direct drive arrangement, epoxy-coated MS casing, aerodynamically designed statically and dynamically balanced impeller, and heavy-duty ball bearings, suitable for continuous operation. The fan shall be provided with mounting frame, wall cowl with external bird screen, safety guard, anti-vibration pads, and necessary electrical cabling and termination from the nearest power point. Performance tolerance and testing shall be carried out as per IS 3588:1987 and AMCA 203, 210 & 300. Motor rating shall be selected based on cold start conditions. Complete in all respects as per approved drawings, specifications, and standards.

Design, fabrication, supply, installation, testing and commissioning of Leak-Tight Mild Steel doors for supply air filter banks, size 750 mm × 1250 mm, of air-tight / marine bulkhead type construction, outward opening, capable of withstanding 1.5 times operating differential pressure, complete with minimum three heavy-duty hinges, positive latching, quick-opening arrangement, and D-type neoprene/silicone gasket, conforming to ANSI N-509 Class-I leakage (≤ 0.085 CMH/m² at 250 mm WG). Doors shall be fabricated from IS 2062 MS, epoxy painted, welded and tested as per IS 823, ASME Sec-IX, ASME E-165, including shop leak-tightness testing and submission of test certificates, complete as per specifications.

Design, supply, installation, testing and commissioning of aluminium aerofoil type supply air grilles with integral opposed blade VCD, fabricated from 18G extruded anodized aluminium with powder coating, double deflection type, suitable for required air flow, throw and terminal velocity as per approved drawings. The aerofoil VCD shall be linkage type with manual control (links, levers and quadrants), frame 1.5 mm thick, blades 1.1 mm thick, depth 110 mm, located within the duct collar with concealed/key operation. Complete with frames, fasteners and accessories. Measurement shall be based on the neck area of the grille, complete as per specifications and standards.

Design, supply, fabrication, installation, testing and commissioning of return air grilles with integral opposed blade VCD, manufactured from extruded anodized aluminium with powder coating, suitable for return air service. Grille shall be double deflection type with movable blades, complete with aluminium collar damper, operating mechanism and accessories (Frame 1.2 mm, Blade 4×1.1×18 mm vertical/horizontal, Flange 20 mm, Depth 45 mm). The VCD shall be located within the duct collar. Measurement shall be based on the neck area of the grille, complete as per specifications and standards.

Supply, installation, testing, and commissioning of flow balancing dampers for supply and exhaust ducting, fabricated in aluminium with powder-coated finish and complete with gear-operated manual control arrangement, suitable for precise air volume regulation, as per approved drawings and project specifications. The dampers shall be Aluminium Aerofoil Type Volume Control Dampers (external linkage type), provided with suitable links, levers, and quadrants for manual operation, conforming to the following specifications: frame thickness – 1.5 mm; blade thickness – 1.1 mm; overall depth – 110 mm, ensuring structural rigidity and smooth operational performance. Measurement and payment shall be based on the area of the duct opening in which the damper is installed (in square meters). The minimum billing area applicable for aluminium dampers shall be 0.15 m², irrespective of the actual installed size.

SS 304L Ducting Work (3 mm thick): Preparation of fabrication drawings, fabrication, cutting, GTAW welding, Dye Penetrant Testing (DPT), installation, leak testing, internal and external painting, provision of brick wall openings, handling and erection of SS 304L exhaust ducting of 3 mm thickness, complete with all accessories and supports as per specifications. Stainless steel material shall be Free Issue Material (FIM). Measurement shall be by weight (kg). Complete in all respects as per approved drawings, specifications, and applicable codes.