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Tender For Fabrication And Erection Of Ac Ducts And Other Associated Works At Igcar Kalpakkam. ; 1 Supply, fabrication and erection of GI ducting including providing of vanes, M.S angle support, angle flanges,anchor fasteners, grill collar, tees, bends, etc. as per the scope of work. 2 22 gauge Class VIII G.I sheet 3 20gauge Class VIII G.I sheet 4 18 gauge Class VIII G.I sheet 5 Supply and installation of Thermal insulation of above ducting (item-4) with closed cell Nitryle foam rubber/cross linked polyethylene thermal insulation.The insulation shall be covered with aluminium foil of 40G thick and fixed properly by self adhesive aluminium tape as per the scope of work. 6 9 mm thick 7 13 mm thick 8 Supply andinstallation of 19 mm thick Fibre free and antimicrobial resistant, Open cell elastomeric nitrile rubber acoustic insulation in supply air ducts with fire retared "O" class, fire performance, resistant to chemical & micro organism and sound absorption class-D as per the technical specification and scopeof work enclosed. 9 Supply and installation of vertically opposed blade Volume Control Damper. The damper shall be made of extruded anodized aluminium, powder coated aliminium volume controldamper having vertical louvers as per the specification. 10 Supply and installation ofFire Damper which shall be provided at the supply duct and suction side of AC plant room. Fire dampers shall be provided with approved make fire and smoke of at least 90 min. fire rating certified by CBRI Roorkee as per UL 555: 1973 or Indian equivalent standards. 11 Supply and installation of double deflection type Supply Air Grill of following specification. Extruded anodized aluminium, powder coated off white/brown colour, adjustable horizontal and vertical louvers and rat entry prevent mesh shall be provided. 12 Supply and installation of double deflection type Return Air Grill of following specification. Extruded anodized aluminium, powder coated off white/brown colour, adjustable horizontal and vertical louvers and rat entry prevent mesh shall be provided. 13 Supply and installation of Supply Air Diffuser of following specification. Extruded anodized aluminium, powder coated with aliminium volume control damper.The louvers protion shall be removable type for adjusting the volume control damper. 14 Supply and installation of Return Air Diffuser of following specification. Extruded anodized aluminium, powder coated without aluminium volume control damper.The louvers protion shall be removable and rat entry prevent mesh shall be provided. 15 Supply and installation of Continuous (linear) Return Grill made of extruded anodized aluminium & powder coated off white colour with 30° inclined permanent fixed louvers as per the specification and rat entry prevent mesh shall also be provided. 16 Supply and installation of motorised damperactuator , to be installed at branch duct of approx. size 500 mm x 400mm. The motor capacity shall not be less than 3 Nm. Modification of existing duct to fix the motorised damper is also included in the contract scope. 17 Safe dismantling, gas cutting and removal of AC equiments & ducts, MS structures & frames, Supply & Return Air grills, etc from different locations in IGCAR. This work includes cutting, dismantling, transporting and handover the removed materials at AC workshop, CWCP or Central Stores as directed by the Engineer in-charge.Transportation of above removed materials (within 2km distance) by means of any vehicle from site to AC workshop/Central Stores is contractor"s scope. 18 Fabrication and erection of MS structures for supporting pipes, ducts and base frames for pumps, motor and AC equipments, etc. 19 Providing and applying enamel painting to MS structures, pumps, motors, pipelines, ducts, AC equipments,etc. This includes thorough cleaning and removal of rust/paint and apply one coats of synthetic enamel paint over a coat ofred oxide primer.It also includes supply of approved make enamel paint and red oxide. 20 Supply, installation and leak testing of air cooledCondenser coil for Packaged chiller and Packaged AC units as per the specification and as required. Air cooled condenser shall be a compact coil made using latest advanced copper tubes with anti corrossive coated aluminium fins as per the original installed in the above AC units. Copper tubes shall be bullet expanded into aluminium fins for mechanical bonding. Independent sub cooling circuit shall be provided in each coils to improve EER. 21 Construction of Brick (230 mm & 110 mm width) wall . 22 Cement plastering in 1: 5 proportions upto12.5 mm thick 23 Brick wall breaking and disposal of debris in the yard 24 Construction pf PCC Works( 1: 2: 4with 40 mm blue metal ) 25 Hire charges for earth excavation/lifting heavy equipments by means of earth mover/crane. The time of hire chargeswill be reporting time to EIC till completion of work.
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