Renovation and maintenance of earthing systems, including the repair of earth pits, and the replacement of the existing lightning protection system with sky netting installation at the magazine of the Jharkhand OC Project, located within the Hzb ara

Amount

Supply and fixing of lightning conductor(having 5 spikes at top with base metal plate including complete set)

Supply & fixing of support insulator

Supply and erection of approved make safe earthing electrode consisting pipe-inpipe technology as per IS 3043-1987 made of corrosion free G.I. pipes with constant ohmic value surrounded by highly conductive compound with high charge dissipation suitable for effective and maintenance free earthing in earth pit of minimum bore dia. 150mm size, as mentioned below : With 3 metre G.I. pipes having outer pipe dia of 50mm having 80-200 micron galvanizing, Inner pipe dia. of 25mm having 200-250 Micron galvanizing, connection terminal dia. of 12mm in nominal soil with 50 kg (two bag) back filling bentonite compound UL listed and confirm to relevant International/Indian standards around electrode upto ground level

supply & fixing of copper cable single core flexible type 1100 voltage grade 10 sq mm( 14nos. X 15m)

supply and fixing of 25 mm (1 inch) flexible conduit

Supplying 50 mm X 8 mm M.S flat iron pole top bracket/ cross arm for single 11/22/33 KV over head line conductor compkete with fixing clamps, bolts, nuts and washers drilling holes for insulator pins, bolts and nuts etc and painting with primer and finish paint as required.(Excluding reusable dismantled channel iron)

Erection of angle iron/channel iron cross arm on wood/RCC/PCC/Steel tubular/rail pole etc. as required.

Supplying and laying 25 mm X 5 mm G.I strip at 0.50 metre below ground as strip earth electrode, including connection/ terminating with G.I. nut, bolt, spring, washer etc. as required. (Jointing shall be done by overlapping and with 2 sets of G.I. nut bolt & spring washer spaced at 50mm)

Providing and fixing of rectangular 11 KV grade PVC sleeves

Painting (with one coat red-oxide paint & aluminium paint) of One no 12Mtr Tubular pole.

Supply & Fixing of 4mm Silver Galvanized Iron Stay Wire (14nos X 12m X 0.131kg/m=22 kg)

Total impact of GST for the purpose of CTC

Rajneesh Electricals (BID ID -1138781)