ADDN/ALTN/PROVISIONING OF EARTHING INFRASTRUCTURE , LA, FIRE RETARDANT ROOF TILE , INDUSTRIAL SOCKET, BUILDING / SECURITY LIGHTING AND ALLIED E/M WORKS AT AF STN TUGHLAKABAD UNDER GE (AF) TUGHLAKABAD

Supply of Early Streamer Emission Lightning Protection System ( Creates an upward stream to neutralise the lightning stroke above the building and hence protect the building), 79 meter Radius of Protection at level-1 and 107 Meter Radius of Protection at Level-4. Complete with all fixing accessories as required. Device confirming to NFC 17- 102 &21186 standards. ESE TARAN Tested for 100 KA Impulse Current also from CITEL, France and Tested by CPRI for 40 KA impulse Current Make : SGI Model: ESE TARAN or Equaivalent as approved by GE.

Supply of Adapter head Mast (5 Mtrs. GI pipe heavy duty 50mm dia) clamped suitable on brick work, wall fixture & all accessories, clamps etc. as required

Supply of 1 C x 70 sq.mm PVC insulated flexible copper conductor cable as required.(FRLS)

Supply of Lightning Event Counter for counting the number of lightning strikes without any power supply. The Counter should be mounted on the Down Conductor and the triggering impulse should be > = 3 KA for 8/20µs. The Lightning Counter should be IP65 rated enclosure suitable for external application

M & L for earthing with electrode should be Copper Plate of size 90 x 60 x 5 cm inter connected with 32 X 6 mm copper strip of 3 meter with suitable brass nut bolts and brazing for lower resistance 2.5 metres length,buried directly and preferablyvertically in ground with top edge not less than 1.25 metres belowground level. Alternate layers of Soil & Curec+ or equilent (10 kgs bag x2 ) ; make as per IEEE 80 2000 ,Clause 14.5 D, Maintenance Free Earthing System to give Earthing Resistance value of ≤ 1Ω. The soil shall be mixed with backfill CURENITE or equilent(25-kgs x2 bags). Copper Electrode’s should be solid rod and surrounded with highly conductive and noncorrosive nature (pH value certified) & covered with Poly plastic Earth Pit Cover in and including construction of PCC boundry with specified colour coding around the poly plastic pit cover .Further electrodes of GI pipe atleast 30mm dia shall be interconnected in parallel fashion incase low ohmage is not achievable.poly plastic enclosure shall be provided.All certificates should be NABL LAB and CPRI certified.

M&L for PCC 1:2:4 type B1 using 20mm grade stone aggregate as in PCC block for airtermination including necessary form work complete all as specified and directed

S&F Single pointed air termination aluminium rod 12 mm dia 300 mm long.all as directed by Engineer-in-Charge

S&F aluminium strip 25 x 3 complete with saddles and fixing screwes for roof conductors down conductors all as directed by Engineer-in-Charge.

S&F copper strip 32x6mm with saddles and fixing screws etc for roof conductors and down conductors above ground all as directed by Engineer-in-Charge.

Supply and fixing 32x6 mm GI strip in short pieces on surface or in recess for all interconnecting,complete all as specified and directed by Engineer-in-Charge.