Construction of Prefabricated Drain adjacent to K and A taxiway and 01L Dumbell area to D junction on Secondary Runway at NSCBI Airport, Kolkata

Amount

Supply of Airfield Lighting (AFL) 5 KV grade, Single Core, Copper Conductor, Copper shielded, XLPE insulated, and with inner and outer semi-conductor, Polyethylene (PE) outer sheathed, Copper Braid, Unarmoured Underground Cable for airfield lighting Primary Circuit, confirming to specification as specified in technical specification and having shield resistance less than 5 Ohm per Km of the following size as required and suitable for communication on existing ALCMS system. (Make : FAA Certified makes). (a) 6 Sq, mm.

Supply of following sizes 5 KV grade dry type Plug and Receptacle of type I, class 'B' primary Connector Kit with field attachment and suitable for 5 KV grade single core copper conductor, copper braided, XLPE insulated, PE outer sheathed shielded cable, complete as required confirming to the technical specification. (Make : FAA Certified Makes). a) 6 sq. mm.

Supply of 63 mm outer dia Anti Rodent Fire Retardant permanently lubricated HDPE (High Density Polyethylene) pipe complete with accessories like couplers, bends, tee etc. and with pulling rope fitted inside, complete as required and as per technical specifications.

Supply of 2C x 4 sq.mm. 600V grade flexible copper conductor, EPR insulated & CPE (Chlorinated Polyethylen, Cross - Linked, Heavy Duty) outer sheath (Black colour) Secondary cable for Airport lighting circuits etc. complete as required. (Make: FAA Certified Makes).

Supply of Fire retardant Yellow/Green 4 sq. mm. Single Core PVC Insulated Industrial Grade Copper Conductor (Unsheathed) Flexible Cables, of 450/750 Volts confirming to BS 6004 : 2000 or 1100 Volts conforming to IS 694 : 1990.

Supply of Secondary Connector Kit suitable for connection 2 x 4 sq mm multi stranded annealed conductor, unshilded secondary airfield lighting cables etc. complete as required and confirming to the technical specification. (Make : FAA certified connector only).

Making end termination of 2 x 4 sq mm multi stranded annealed conductor, unshilded secondary airfield lighting cables with secondary connector kit connecting one end at inset fitting side and other end towards isolating transformer end etc. complete as required.

Providing and fixing of 6 SWG G.I. wire on surface or in recess or along with cable for loop earthing etc. as required.

Dismantling of cable laid in existing pipe/ Duct of size up to 25 Sq mm, upto 5 KV grade and returning to AAI store.

Fabrication, supply & installation of MS transformer housing box of size 750mm x 350 mm x 450 mm (H) made out 6 mm thick MS sheet and top cover 10 mm thick MS sheet with 12 nos. hole on the edges and 12 nos. bolts, washer, rubber gasket etc., finishing including pencil grinding (bevelling) of outer edge of top cover to get a ‘C’ shaped finished surface, the box shall have hole in the centre at 150 mm above bottom surface at two / three / four sides suitable to receive 50 mm dia GI pipe or 63 mm dia HDPE pipe, having two earth bolts of M10x40 mm. and and a drain pipe at the bottom suitably tapped to receive 15mm dia GI pipe, all inserts should be suitable for M-10 size bolt & shall be of SS including painting of box with one coat of primer & two coats of black enamel paint and installation using cement concrete 1:2:4, 100 mm all around the box and pedestal of 0.30m & 0.10m thick all around the box making suitable slope to level of runway/taxiway all around the housing box and lettering, numbering etc. complete as required. a) Installation of housing box in bitumen pavement / concrete area / shoulder area made of gravel mixed with cement sand.

Dismantling of Box of size 750 mm x 330 mm x 450 mm or 330 mm x 330 mm x 450 mm (H) made out 6 mm thick MS sheet and top cover 10 mm thick MS sheet with three compartment and returning to AAI store.

Removing the cement concrete from MS Transformer housing boxes of size 750 mm x 330 mm x 450 mm or 330 mm x 330 mm x 450 mm (H) by using jack Hammer etc. complete as required as per instruction of EIC.

Installation of MS Transformer housing boxes of size 330 mm x 330 mm x 400 mm (H) made out 6 mm thick MS sheet and top cover 10 mm thick MS sheet including making hole to receive 50 mm dia GI pipe or 63 mm dia HDPE pipe at one side, painting of box with one coat of primer & two coats of black enamel paint and using cement concrete 1:2:4, 100 mm all around the box and pedestal of 0.30m & 0.10m thick all around the box making suitable slope to level of runway/taxiway all around the housing box i/c lettering, numbering etc. complete as required. a) Installation of housing box in bitumen pavement / concrete area / shoulder area made of gravel mixed with cement sand.

Laying of high density polyethylene HDPE pipe of OD 63 mm complete with accessories like couplers, bends, tee etc. in the shoulder/runway/taxiway for GLF work i/c machine cutting of runway/taxiway/shoulder surface of bitumen pavement / cement concrete / shoulder area made of gravel mixed with cement sand of width 110 mm and upto 200 mm deep, refilling & making good the same by cement concrete of mix 1:2:4 or higher grade/bitumen finish as per direction of EIC and as per site requirement.

Laying of 63 mm dia OD HDPE pipe, complete with accessories like couplers, bends, tee etc. in the soil for GLF work upto 750 mm deep with excavation, back filling, leveling & making good the same as per site requirement.

Laying of one number PVC insulated & PVC sheathed armoured / unarmoured aluminium / copper conductor Airfield Lighting / power cable of voltage grade exceeding 1.1 KV but not exceeding 11 KV of size not exceeding 25 sq. mm. in the existing cable duct / masonary trench / RCC / HUME / METAL / GI / HDPE pipes etc. as required.

Making connection of 5 KV grade, 6 Sq mm copper conductor, copper braided cable with dry type plug & receptacle connector kit, checking continuity after connection with the existing circuits etc. complete as required and as per direction of EIC.

Laying of one number following size PVC/EPR insulated and PVC/CPE sheathed / XLPE power cable/Airfield Lighting cable of 1.1 KV grade along with 4 sq mm earth wire tied by black tape or cable tie at suitable interval in the existing RCC/HUME/HDPE/METAL pipe etc. as required. Upto 35 sq. mm.

Supply and Making 150 mtrs long Primary Leads of 5 KV Grade Primary Cable of 6 sq. mm. with crimping of Male and Female connectors at both the ends for temporary arrangement (to operationalize the other part of the runway/taxiway) for all the circuits disturbed during construction of drain both side of Sec. runway. This job involves supply of Cable, Primary Connectors of approved make list, making the primary leads of 150 mtrs each with crimping Essna connector one side Male and other side female and checking its continuity including all materials, tools, spares, labours, consumables etc. as per directions of the Engineer In charge. (the Materials should be in sound condition and shall be property of AAI after the Job completion).

Making temporary arrangement (to operationalize the other part of the runway/taxiway) for all the circuits disturbed during construction of drain both side of Sec. runway. This job involves disconnection of the affected part of ckts, dismantling of fittings, opening of M S Housing Boxes, diversion of cables, Laying of the Short piece of the cables as mentioned in SL no 14 in ground without sand cushioning and protective covering, connection, interconnection with existing circuit and loop circuits to provide the fully functional system on the balance part of the runway/taxiway during the progress of the work and again reinstallation of fitting, connection of Ckts etc while handing over the same to operation by the end of the NOTAM period including all materials, tools, spares, labours, consumables, co-ordination as required so as to keep the Operation alive etc as per directions of the Engineer In charge.

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