GEAFU-70/2026-27 REPAIR/REPLACEMENT OF CONVENTIONAL EARTHING/CHEMICAL EARTHING, BRAZING WORK OF STRIP, REPLACEMENT OF UNSV SPD,s ETC ALONGWITH CERTAIN ALLIED WORK AT AF STN NATHATOP

M&L Repairing/recharging to existing defective chemical earthing comprising copper earth plate electrode 900 x 600 x 5 mm by taking out carefully earth plate, watering pipe, protection pipe and re-buried the same after removing sludge from the plate and pipes. The earth plate shall be buried directly in ground with top edge of earth plate not less than 1.50 m below normal ground level, connected to copper earth strip any size by means of nut-bolts, check nuts and washers of galvanised iron or steel all as shown on electrical plate No. 3 of MES schedule 2009, Part–I (Specifications) and other end connected to main switch board / main DB’s / earthing test point testing of earthing on completion of job complete all as specified and directed.

Repairing to existing defective copper earthing comprising conventional copper earth plate electrode 600 x 600 x 3.15 mm by taking out carefully earth plate, watering pipe, protection pipe and re-buried the same after removing sludge from the plate and pipes. The earth plate shall be buried directly in ground with top edge of earth plate not less than 1.50 m below normal ground level, connected to copper earth strip any size by means of nut-bolts, check nuts and washers of galvanised iron or steel all as shown on electrical plate No. 3 of MES schedule 2009, Part–I (Specifications) and other end connected to main switch board / main DB’s / earthing test point testing of earthing on completion of job complete all as specified and directed.

M&L Repairing/recharging to existing defective GI earthing comprising GI earth plate electrode 600 x 600 x 6 mm by taking out carefully earth plate, watering pipe, protection pipe and re-buried the same after removing sludge from the plate and pipes. The earth plate shall be buried directly in ground with top edge of earth plate not less than 1.50 m below normal ground level, connected to GI earth wire or GI earth strip any size by means of nut-bolts, check nuts and washers of galvanised iron or steel all as shown on electrical plate No. 3 of MES schedule 2009, Part–I (Specifications) and other end connected to main switch board / main DB’s / earthing test point testing of earthing on completion of job complete all as specified and directed. Note on item No 1 to 3 (i) Necessary eath work will be measured and paid seperately. (ii) Material like, salt charcoal, protection pipe, funnel and earth plate will be measured and paid seperately (iii) Copper earth plate shall be measured and paid seperately.

Supply only Copper plate of size 900 mm x 600 cm x 3.15 mm including nut, bolt, washers made of copper alloy complete all as specified and directed by Engr-in-Charge

Supply only Copper plate of size 600 mm x 600 cm x 3.15 mm including nut, bolt, washers made of copper alloy complete all as specified and directed by Engr-in-Charge

Supply only GI plate of size 600 mm x 600 cm x 6.00 mm including nut, bolt, washers made of copper alloy complete all as specified and directed by Engr-in-Charge

Supply only salt commercial for the earth pit all as specified and directed

Supply only charcoal dust for the earth pit all as specified and directed.

Supply only 15 mm dia of GI tubing, light grade with all fittings including fixing arrangement with screws, reducer and clamps fasnig as protection of wire complete all as specified and directed.