Gel earthing work for transformer at various 33 11KV S S under XEN CD Baran.

Amount

PART- B (Item Rate Basis)

P/F EHCC certified ground tubelor effective earthing system / hollow tube bar with GI pipe in pipe technology for L.Y./H.Y. line EEE5030 size outer dia 65mmx51mm mtr. (depth) kv transformers with 20 bags of highly conductive packing matgerial mineral filling compound ( MFC should have hygroscopic property to retain the moisture for long time to creat low resistance zone ) 25 kg each for putting around one electode IS 1987CPRI tested for 15ka / suitable commisoning of tublor earthing system earth pipe (GI pipe 65x51 mtr. paid seprately ) the pipe shall be done perforation 3 to 5 mm size all around of available GI pipe in Zig Zag shap and making air vent with welded GI plates as per enclosed drawing i/c of welding and inserting of pipe in exesting hole and packing of material with sandy soil upto top of hole and CC finished chamber covered with hinged type with locking arrangement CI frams of size 300x300 mm complete testing of earth resistence as required for 3 kv transformers and work done as per direction of Engineer in charge.

Earth work in filling of excavated earth excpet back cotton soil with watering and compation of spreaded earth in 15-30 cm layers, levelled and neatly dressed as per requirement of site and direction of engineer in charge, work includes cost of earth with taxes, loading, unloading transportation, labour, water and T&P etc. complete with all lead and lift.