Repair/Maint of lightening protection of Machine control room of light/elevator and E/M installation at certain locations under GE (Utilities) Udhampur

Supply and fix Ligtning lightining conductor/ Protection Rod with one primary terminal and four secondary terminals of minimum height 1000mm and 20mm dia, Aluminium metal based having current protection of minimum 40 kA with bowl plate conforming to IEC 62305 standards, complete all as specified & directed by Engineer-in-charge.

Supply and fix Galvanised iron Strip 32 x 6 mm with saddles and fixing screws etc. for roof conductors and down conductors above ground complete all as specified & directed by Engineer-in-charge.

Supply and fix Galvanised iron Strip 25 x 3 mm with saddles and fixing screws etc. for roof conductors and down conductors above ground complete all as specified & directed by Engineer-in-charge.

Tubes, 'medium grade, galvanised, with all fitting and fixed complete to walls and ceilings or laid in floors of 20mm Dia, complete all as specified & directed by Engineer-in-charge.

Mild Steel screw bolts (machine made) with hexagonal or square heads at one end and screwed the other, or screwed both ends, each screwed end to be fitted with washers and one hexagonal or square nut, not exc 5cm long, complete all as specified & directed by Engineer-in-charge.

Supply and fix clamps for support to conductor. The conductor holder shall be made of Stainless Steel/GI and shall be supported with the structure at every 1 mtr, as far as drilling shall be avoided on roof top. The clamps shall be tested for natural weathering and exposure to corrosion in i.e Salt Mist Treatment test according to EN 60068-2-52 and Humid Sulphureous Atmosphere treatment test according to BS EN ISO 6988, complete all as specified & directed by Engineer-in-charge. a) Material of conductor holder: stainless steel/GI b) Conductor holder support width: 8-10 mm c) Height of conductor holder: 20 mm d) Standard: EN 62561-4 e) Conductor leading: fixed

Earthing complete with galvanised steel earth plate electrode 600mm×500mmx6mm thick buried directed in ground (earth plate not less than 2.25m deep below normal ground level) with top edge of the piate not less than 1.5m below normal ground level) connected to and including galvanised strip 25x3 mm by means of bolts, nuts, check nuts and washers of galvanised iron including PCC 1:2:4 in pit, angle iron 25x25x3mm frame work with precast RCC 1:2.4 cover reinforced with 8mm dia TMT bars 150mm C/C both ways and 12 mm dia MS fabricated handle, medium grade Gi watering pipe 20mm bore with funnel, wire mesh and light grade Gi protection pipe 40mm bore upto 5m length for drawing in earth lead wire, salt, charcoal, etc. Including excavation and earth work in any type of soil, removal of surplus soil to a distance not exc. 50m complete all as shown in electrical plate No 3 of MES schedule 2009 (Pt-1) and connected to main control board all as specified or indicated including testing on completion, complete all as specified & directed by Engineer-in-charge. * Dressing of surface with PCC/Bitumin after backfilling.

Galvanized metallic zinc coated Iron Earthing Electrode, specialized developed for high sensitive equipment as per CPRI 300 Cm Long,2inch dia,6mm thickness. Tested on 52.kA, +/-12% max, class type GALV. Yield strength 329, tensile Strength 426, Elongation Bend / Flattering. Thickness Internal disposes’ with base plate 3.15 mm to close the earthing rod. Terminal filled with highly conductive compound which increase the life of Earthing electrode. Composition of carbon,bentonite clay and conductive salts ( MgO, Cao) chemical filled in Electrode water solubility, acid solubility. Grain size 100mesh, BFC Compound non toxic, non reactive, non explosive and non corrosive, longer life Easy to maintain less space consistent results. Earthing Pit and Chamber Cover, complete all as specified & directed by Engineer-in-charge. * Dressing of surface with PCC/Bitumin after backfilling.

M& L cement concrete in foundations, filling and mass concrete of Type B2 1:2:4 (40 mm graded aggregate) complete all as specified & directed by Engineer-in-charge.

Supply and fix test point terminal block made of gun metal or phosphorous bronze size 75x75x25 mm drilled and screwed including 3 nos 8 mm dia 25 mm long hex head screw complete all as specified & directed by Engineer-in-charge.