bids are invited for custom bid for services - supply, installation, testing commissioning of lightning protection system for microwave tower at uran plant, ongc - supply, installation and commissioning of advanced lightning arrester (early streamer emission / spline ball ionizer)on 125 mtrs. mw communication tower along with following l.a. accessories one each i.e. a) gi mast of 5 mtr 40mm dia, b) insulator c) strike counter 6 digit and d) test link box single bus bar , supply, installation and commissioning of cu bonded earthing electrode of 3 mtr length (mtr), terminal size:50/6/150, outer pipe diameter (min) :17.2 mm and 17.2 / od ss cl both side and supply and pouring of eco safe carbon based maintenance free backfill compound (resistivity < 0.12 ohm m) - 50 pounds (02 bfc 25 kg graphite base)along withsupply and fixing/construction of eco friendly rust proof heavy duty weather proof polyethylene earth pit chamber with dimensions: 254 mm dia (top), 330 mm dia (bottom) & 260 mm (height), and digging / boing of pit (by digging or earth auguring machine) for fixing earth pit chamber and earth electrode and pouring of supplied backfill. , supply, fixing/installation and commissioning of copper strip of size 25/3 mm on 125 mtr communication tower.