PROVISION OF HIGH MAST LIGHTS WITH ALLIED SERVICES AT AF STATION UNDER GE (AF) CHABUA

Amount

M&L for earthing complete with galvanized mild steel earth electrode plate 600 X 600 X 6 mm thick buried directly and vertically in ground connected to galvanized earth lead wire 4 mm dia by means of bolts, nuts, check nuts and washers of galvanized iron or steel all as shown in electrical Plate No 3 of MES SSR Part-I connected to main switch board or main control board all as specified and testing on completion including provision of earth wire protected by galvanized iron 15 mm bore medium grade pipe with all fittings from the earth electrode fixed along pole or wall with and including 25 x 6mm flat iron clamp, bolts, nuts and washers and watering pipe shall be 20 mm bore GI medium grade from top of the earth pit to top of earth plate electrode including all excavation and earth work in any type of soil and removal of soil upto 50 metre, PCC pit with pre-cast RCC cover with handle, charcoal/salt, funnel, CI frame etc including taking down old unsv earthing complete all as directed. Notes:- (i) The concrete pit shall be made in PCC 1:2:4 type B-0, using 12.5 mm graded crushed stone aggregate 40mm thick precast cover slab of RCC (1:2:4), type B-1, using 20mm graded crushed stone aggregate with suitable MS handle in lieu of CI cover (ii) Item includes the cost of 7.5 metre GI pipe for protection of earth wire. Any variation in length shall be adjusted through deviation order (iii) Items includes cost of 7.5 metre earth lead wire. Any variation in length shall be adjusted through deviation order. (iv) Earth electrode shall be surrounded by adequate quantity of charcoal dust and salt to a packed thickness of 15 cm on all sides.

Supply, Erection, Testing & Commissioning of 12.5 Mtr. High Mast lighting system, having minimum top dia 150mm & Bottom dia 340mm system suitable for 8 Nos. luminaries complete in all respect as per detail specification given below:- (i) Mast shall be in two sections, hot dip galvanized, inside & outside in single dip, suitable for wind velocity as per IS 875 part 3/1987. There shall be only one longitudinal seam weld V section and no circumferential weld, it shall also include accessories for high mast including head frame, 2 point suspension system with steel wire rope 6 mm dia (7/19 construction) double drum winch, Galvanized lantern carriage arrangement & integral type power tool arrangement for raising & lowering of lantern carriage. (ii) Foundation bolts manufactured from special steel along with nuts, washers, anchor plate and template. Detail specification:- (i) Height of Mast:- 12.5 mtr. (including the height of head frame) (ii) Wind speed :- 180 Km/hour as per IS-875 (Part III) (iii) The High Mast & head frame shall be structurally suitable to accommodate the 8 nos. flood lights & its control gear boxes. (iv) The entire high mast structure (internally & externally) and all MS parts shall be hot dip galvanized as per BS-729 IS-1461 or equivalent. (v) Material:- The High Mast sections should be manufactured with best steel grade in compliance with BSEN 10025 EQ or equivalent with yield strength not less than 355 MPA. The head frame shall also be steel construction of steel grade as indicated. (vi) Welding: All welding shall be undertaken & performed as per WPS/PQR in accordance with BS-5135 or AWSD 1.1. (vii) Structure:- Continuously tapered polygonal with no circumference weld on shaft. Type of joint - Telescope slip joints (stress fit) (viii) Thickness:- Bottom section Min- 3mm. Top section Min- 3mm.

Item No. 2 Contd... (ix) Head frame: (Lantern carriage arrangement) Galvanized Fabricated lantern carriage for fixing & holding the flood light fittings & control gear boxes provided with suitable winch arrangement to lower & raise the lantern carriage assembly. (x) Earthing:- The Mast shall be bounded properly to the earth. (xi) Electrical system & cables:- A suitable terminal box shall be provided at the base compartment of the high mast for terminating the incoming cable. The internal connections from the bottom to the top shall be made with special trailing cables (including supply and erection of cables for luminary and aviation light on the top) there shall be weather proof junction box to terminate the trailing cable. (xii) Lighting finial: - One number heavy duty hot dipped galvanized lightening finial (minimum 1.2 mtr in length) shall be provided at the centre of the head frame. It shall be bolted steadily to the head frame to get a direct conducting path to the earth through the mast. (xiii) 3 Phase 1.5 K.W power tool suitable for 12 Mtr high mast. It includes cost of 1 No. starter to be provided in the pedestal. Starter, Motor, Gear box, rope, pulley, nut & bolts etc. and all other required items must be installed in the pedestal. It also includes the cost of connection with 10mm, 2 copper wire from starter to motor in the high mast, panel to starter complete in all respects as per satisfaction of E.I.C. (xiv) It should include MCB TPN of capacity 63 A of approved make inside the base compartment/J.B to terminate the incoming/outgoing cables. (xv) Foundation of the structure shall be constructed as per the specifications of the manufacturer and cost shall be included in quoted rates. (xvi) The work shall be executed to the entire satisfaction of Engineer-in-Charge.

Supply & fix Flood light luminaire with secondary optics made in pressure die cast housing and heat sink in aluminium extrusion IP 66 of capacity 150 W all as per Crompton Cat No CFS 501 150 30 60D SL GL NGG/Bajaj cat No GLEAM F 165L WH SY PC SD V2/C&S cat No. LTEF 150WHPLED / Havells cat No. JETAIRISFL150WLED757ARNBLTG

Supply, Installation, testing & commissioning of feeder pillar box (KIOSK) out door type, floor mounted dust and vermin proof, made out 3.15mm CRCA MS Sheet and base frame 40x40x5mm angle iron front openable type with aprons for cable entry, locking devices shall be provided for proper locking of the feeder box, dully painted using power coating suitable for 415 Volt 3 phase 4 wire, 50HZ AC supply system, necessary PCC foundation, comprising of following incoming and outgoing feeder. CONTROLS:- (a) MCCB 63 Amps , 16KA, 4 Pole - 01 No (Incomer) (b) MCB 32 Amps, 4 Pole -01 Nos (c) Time switch 250 Volt single phase of 20 Amps rating with contactor (d) Taggle switch -01 No (e) MCB - 06-32 Amps Sp - 01 No (f) Neutral link (g) PCC 1:3:6

S & F of LED aviation light luminaries comprising of aluminum housing with polycarbonate enclosure with 302 nos LED complete of cat No. BGAV 302 LED of Bajaj/GLN-703 (Single) of Crompton or equivalent in approved make complete all as specified and as directed.

Supply & fixing 70 Sqmm 3.5 Core, XLPE insulated armoured heavy duty electric cable with aluminium conductor 1100 Volts grade laid in trenches/floor or fixed on wall/pole including brass compression cable gland, terminal lug etc complete all as specified and as directed.

Supply & fixing 50 Sqmm 3.5 Core, XLPE insulated armoured heavy duty electric cable with aluminium conductor 1100 Volts grade laid in trenches/floor or fixed on wall/pole including brass compression cable gland, terminal lug etc complete all as specified and as directed.

Supply & fixing 25 Sqmm 3.5 Core, XLPE insulated armoured heavy duty electric cable with aluminium conductor 1100 Volts grade laid in trenches/floor or fixed on wall/pole including brass compression cable gland, terminal lug etc complete all as specified and as directed.

Excavation in trenches nexc 1.5 mtr wide and n exc 1.5 mtr in depth and getting out in soft/ loose for laying cables, erection of poles complete all as specified and as directed.

Returning, filling in including spreading, levelling, watering and well ramming in layers not exc 25 cm in soft/loose soil complete all as specified and as directed.

Removing surplus excavated soil nexc 50 mtr and depositing where directed at a level n-exc 1.5 mtr above the starting point complete all as specified and as directed.

Supply and laying well burnt Sub Class 'B' bricks locally available best quality laid in trenches perpendicular to UG cable above sand cushioning for cable protection complete all as specified and as directed.

Supply and spreading dry coarse sand in trenches for protection of underground electric cable, spread in uniform 23 cm thickness and punned down gently to 18 cm complete all as specified and as directed.

Supply & fix GI tube light grade of 40mm size laid in trenches or fixed on wall, floor or on pole for cable protection complete all as specified and directed.

Horizontal Boring by Passing GI Protection Pipe up to 50mm Bore (dia), under Road /Foot Path, not exc. 10.00 METRE in a Single Length, complete all as specified and as directed.

S&F diffused recess mounted 2ft x 2ft LED luminarie of size 36W deep drawn CRCA housing with efficacy of 100 lm/W of Bajaj cat No. TROFFERS BZRSQL 36L LED GX WH/DROPDOWNFLAT2X2PLR36WLED830S of Havells/LCTLRNE-36-FO-CDL of Crompton or equivalent of approved make.

S&F of 60 Watt LED streetlight made up of pressure die cast housing with toughned glass and individual high power LEDs with secondary optics, iP66 protection, impact resistance of IK07 & 10 KV external SPD. Efficacy 120lm/W all as per Bajaj Cat No. ENXT P 72L WH PO PC SD/C&S cat LTESSI60WLED/CROMPTON Cat TRP-409-60-57-SL-GL-NSG/ENDURAPEARLNEOSL60WLED757PASYTOPCAST of Havells incl taking down old unsv light fittings and old fittings shall be deposited in MES store.

S&F of 90 Watt LED streetlight made up of pressure die cast housing with toughned glass and individual high power LEDs with secondary optics, iP66 protection, impact resistance of iK07 & 10 KV external SPD Efficacy 120 lm/W all as per Bajaj Cat No. ZELA P 108L WH PO TG SD/Crompton cat TRP-411-90-57-SL-GL-NSG/C&S cat LTESSI90WLED/ENDURAOMNIPLUSSL90WLED757SASYTOPC of Havells incl taking down old unsv fittings and old fittings shall be deposited in MES store.

Supply and fixing of Automatic Street light Switch using NATURE SWITCH for automatic switching of street lights based on LUX level of Natural light. The sensor (nature switch) along with suitable power contactor, MCB and support terminals should be enclosed in pole/wall mountable Enclosure made of rust proof, electric shock proof termite proof and FR grade special moulding compound junction box conforming to IP54. The contactor, MCB and circuit wiring should suitable enough to take load of 12KW equally distributed over 3-phase (4KW/Phase). Contactor rating 40 Amps (SP 3 Nos), wiring main load with 6sqmm copper conductor FR grade cable including dismantling old unsv one complete all as specified and directed.

M/S R G Construction

M/S S. P. ENTERPRISE

M/S D P BERLIA

M/s PRABIR ENTERPRISE