PROVN OF LIGHTS AT TARMAC ,TECHNICAL AREAS AND SPECIAL REPAIRS TO AIRFIELD LIGHTING SYSTEM ( MES ORIENTED SPECIAL) AT AF STATION TAMBARAM

Amount

Excavation in trenches not exceeding 1.5 m deep and not exceeding 1.5 m wide and getting out in hard/dense soil all as specified and directed.

Returning, filling in soil including spreading, levelling, watering and well ramming in layers not exceeding 25cm thick all as specified and directed.

Removing the excavated surplus soil to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point.

Filling only riddled earth obtained from excavation as in cable cushion. ( Note : Only approved earth duly riddled , obtained from excavation shall be used, Punned thickness shall only be measured)

Supply, lay in trenches burnt Bricks, old size, Sub class "B" for cable protection all as specified and directed.

M&L 16M high mast shaft in two sections suitable to with stand for 55 m/sec wind speed, with raising lowering system comprising, head frame, luminaries carriage suitable to install 08 nos luminaries in symmetrical arrangement, double Drum winch, 5 mm diameter SS wire rope, trailing cable, connector, integral power tool motor, manual handle, junction box, lightening finial. (Wiring material from JB to individual luminaire & MCB in base compartment are not included and are a part of installation). Note : The unit rate quoted is deemed to inclusive of following :- (i) S&F of foundation bolts manufactured from special steel along with nuts, washers, anchor plate and common template. (ii) S&F of LED type single dome aviation obstruction light.-01 No (iii) S&F of outdoor stand mounted feeder pillar with 63A TPN MCB incomer, single dial time switch, 45 A TP contactor for the automatic switching of luminaries, power tool control with 2 no 9 A contactors and raise lower push button, Incoming 35 sq. mm and out going 16 & 2.5 sq. mm terminals. (iv) ERECTION PART ( As per manufacturer recommendation) (v) Land dressing, earth work excavation , RCC 1:1.5: 3 type B1 as in foundation,foundation bolts,anchor bolts, panel grouting & Refilling. Materials movement, and mast site assembly, mast erection ,installation ,testing and commissioning complete all as specified and directed. (vi) Foundation design and details shall be got approved by GE. ( vii) LED light of each 8 Nos per high mast ie total 32 Nos shallbe measured separately.

Supply and fix high mast LED fitting of capacity 250w Epoxy powder coated die-cast aluminium housing in grey finish with elegantly designed heat sink for efficient thermal management, sturdiness & excellent corrosion resistant. PG9 gland is used for cable entry and provision for loopin-loopout, Protective Vent is provided that rapidly equalize pressures while blocking water and contaminants, that improves product performance and service life, High efficiency long life LED module with SMD LED package mounted on MCPCB, PC Lens with Narrow /Wide beam distribution and Toughened glass, Built-In Potted IP67 electronic LED driver with APFC,lower THD, Open Circuit Protection, Over Voltage Protection, Surge Voltage Protection other safety test as per IS 15885 Part-2/Sec 13 & CISPR 15, Operating temperature: -10 °C to 50 °C, Operating voltage range: 140 V - 270 V, Average life L70B50: 50000 hours, Surge Protection upto 10 kV with inbuilt SPD, PF >0.95, THD<10%,31250 lumen, 9.7Kg,IP 66 complete all as specified and as directed. Make Havells cat part No JETAIRISMAXFL250WLED757PWBLTG or its equivalent from list of Makes. (Note : For fixing 08 Nos in each high mast )

Supply and fix Flood LED fitting of capacity 200w Epoxy powder coated die-cast aluminium housing in grey finish with elegantly designed heat sink for efficient thermal management, sturdiness & excellent corrosion resistant. PG9 gland is used for cable entry and provision for loopin-loopout, Protective Vent is provided that rapidly equalize pressures while blocking water and contaminants, that improves product performance and service life, High efficiency long life LED module with SMD LED package mounted on MCPCB, PC Lens with Narrow /Wide beam distribution and Toughened glass, Built-In Potted IP67 electronic LED driver with APFC,lower THD, Open Circuit Protection, Over Voltage Protection, Surge Voltage Protection other safety test as per IS 15885 Part-2/Sec 13 & CISPR 15, Operating temperature: -10 °C to 50 °C, Operating voltage range: 140 V - 270 V, Average life L70B50: 50000 hours, Surge Protection upto 10 kV with inbuilt SPD, PF >0.95, THD<10%,31250 lumen, 9.7Kg,IP 66 complete all as specified and as directed. Make Havells cat part No JETAIRISMAXFL200WLED757PWBLTG or its equivalent from list of Makes. (Note : For tarmac area)

Supply and Laying LT UG cable of size 35 sqmm 3.5 core,3 phase 1100 Volts grade XLPE insulated PVC sheathed amoured, heavy duty, in trenches/walls/poles/passing through pipes with multistranded aluminium conductor including lugs/thimble/ferules connection, testing and commissioning complete all as specified and directed.

Material and labour for earthing complete with GI plate electrode 600x600x6mm thick, buried directly in ground (earth pit not less than 2.25m deep below ground level) with top edge of plate not less than 1.5m below ground level connected to earth lead of 32x6 GI strip means of bolts, nuts, washers of galvanized all as shown in electrical plate No.3 of SSR Part-I including necessary excavation and earth work. PCC 1:3:6 type C1 chamber, RCC cover in 50mm thick 1:2:4 type B1 with 8mm CTD 140mm centre to centre with suitable handle, watering pipe 20mm dia light grade pipe with funnel, charcoal salt connected to earthing test point all as specified including testing and commissioning on completion

Supply only Unskilled labour for maint of Air field lighting system at AFS Tambaram consists of Air field lights, control cables, Isolation transformers, IT chambers, Landing TEEs, Wind Sockers etc including connected works on daily basis or on requirement basis per 8 hours shift between 0700 hrs to 1800 hrs complete all as directed. ( Note : The number of labour supplied will be as per requirement basis.Contractor shall maintain a attendance register duly signed by Engr-In-Charge and Contractor Rep. Labour should report to BCR section on time. Reporting time will be decided by BCR section as per the ground requirement with in the time period as mentioned above.)

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