repair/replacement of different types of earthing and lightening protection systems incuding testing of earth resistance at darjipura and harni af stn baroda repair/replacement of different types of earthing andlightening protection systems including testing of earth resistance at darjipura and harni af stn baroda , supply and fix in repair of aluminium strip 25mm x 3 . 15 mm complete with new porceline insulator by means of screws of suitable size for isolation of strip complete all as specified and directed . , supply and fix in repair of copper strip 20mm x 3 . 15 mm complete with new porceline insulator by means of screws of suitable size for isolation of strip complete all as specified and directed . , supply and fix in repair of test point terminal block made of gi sheet box of size 90x90x90mm made of 1 . 6mm plain sheet and screwed to wall for protection of test point complete all as specified and directed . , supply and fix in repair of single pointed aluminium rod rod 12 mm dia and 300 mm long fixed on the roof including all fittings , fixtures and pcc 1:2:4 type b-1 blocks 100mm x 100mm x 100mm complete all as specified and directed . , supply and fix in repair of galvanized iron strip 32x6 mm buried in ground 150 mm below ground including all excavation and earth work connecting at ends , jointing etc complete all as specified and directed . , m&l for providing earthing complete with galvanised steel earth plate electrode 60 x 60cm x 6 . 0mm thick buried dirictly in ground ( earth pit not less than 2 . 25 meters deep below ground level ) with top edge of the plate not less than 1 . 5 meters below normal ground level , connected to galvanised earth lead wire 4 . 0 sqmm size upto 7 . 5 meter long by means of bolts , nuts check nuts and washers of all galvanised iron or steel all as shown in electrical plate no . 3 of ssr part-1 and connected to test point including necessary excavation/ earth work in any type of soil/rock strata , pcc 1:3:6 type c1 cement concrete 1:2:4 type b1 reinforced with welded steel wire fabric ( amp ) not less than 4 kg per sqm funnel with wire mesh and watering pipe 15 mm dia bore ( gi light grade ) , pcc pit with 50mm thick pcc cover etc . including testing on completing including gi protection pipe 20mm dia medium grade for earthing lead complete all as specified and directed including demolition of old unservicable earthing . , m&l for providing earthing complete with galvanised steel earth plate electrode 60 x 60cm x 3 . 15mm thick buried directly in ground ( earth pit not less than 2 . 25 meters deep below ground level ) with top edge of the plate not less than 1 . 5 meters below normal ground level , connected to galvanised earth lead 32x6mm gi strip upto 7 . 5 meter long by means of bolts , nuts check nuts and washers of all galvanised iron or steel all as shown in electrical plate no . 3 of ssr part-1 and connected to test point including necessary excavation/ earth work in any type of soil/rock strata , pcc 1:3:6 type c1 cement concrete 1:2:4 type b1 reinforced with welded steel wire fabric ( amp ) not less than 4 kg per sqm funnel with wire mesh and watering pipe 15 mm dia bore ( gi light grade ) , pcc pit with 50mm thick pcc cover etc . including testing on completing including gi protection pipe 40mm dia medium grade for earthing lead complete all as specified and directed including demolition of old unservicable earthing . , m&l for providing earthing complete with copper earth plate electrode 60 x 60cm x 3 . 15mm thick buried directly in ground ( earth pit not less than 2 . 25 meters deep below ground level ) with top edge of the plate not less than 1 . 5 meters below normal ground level , connected to copper earth lead 20x3mm ( copper strip ) upto 7 . 5 meter long by means of bolts , nuts check nuts and washers of all galvanised iron or steel all as shown in electrical plate no . 3 of ssr part-1 and connected to test point including necessary excavation/ earth work in any type of soil/rock strata , pcc 1:3:6 type c1 cement concrete 1:2:4 type b1 reinforced with welded steel wire fabric ( amp ) not less than 4 kg per sqm funnel with wire mesh and watering pipe 15 mm dia bore ( gi light grade ) , pcc pit with 50mm thick pcc cover etc . including testing on completing including gi protection pipe 20mm dia medium grade for earthing lead complete all as specified and directed including demolition of old unservicable earthing . , supply , instalation & testing of fast earth electrode maintenance free chemical earthing of dual pipe technology of 3 mtr long with outer pipe diameter of 88 mm & inner pipe diameter 48mm , the pipes are properly galvanized for 80-120 micron and wall thickness of inner pipe 3mm and 2mm of outer pipe . there should be terminal for connection of 32x6mm gi strips with two holes of 14 mm diameter . fast electrode is duly fitted with the highly conductive material with sealing at both ends with lead terminals of 50x6 mm gi strips at top . alongwith 2 bags of 2 kgs each of earth enhancing compound . the chemical should be tested and certified by any international accredited laboratory . the earthhencing compound should be tested referring to protocol is 1350/&/ec62321/111/54/cdv . the ph value of compound should be between 7 to 8 . the content of mercury ( hg ) & hexacromium should be below detection level . the electrode should be tested for salt spray test as per bis117-09 for corrosion for minimum 500hrs . the fast electrode shall be dully tested & certified by cpri ( central power reserch institution ) , govt of india for a suitable minimum short circuit current for 1 second with initial pick of suitable ka . the fast electrode shall be approved by cpri , erda/nabl lab complete all as specified and directed . , supply and instalation & testing of fast earth electrode maintenance free chemical earthing of 3 mtr long copper pipe of diameter 76 mm . there should be terminal for connection of 20x3 mm of copper strip with two holes of 14 mm diameter . fast electrode is duly fitted with the highly conductive material with sealing at both ends with lead terminals of 20x3 mm copper strip at top , alongwith 2 bags of 2 kgs each of earth enhancing compound . the chemical should be tested and certified by any international accredited laboratory . the earthhencing compound should be tested referring to protocol is 1350/&/ec62321/111/54/cdv . the ph value of compound should be between 7 to 8 . the content of mercury ( hg ) & hexacromium should be below detection level . the electrode should be tested for salt spray test as per bis117-09 for corrosion for minimum 500hrs . the fast electrode shall be dully tested & certified by cpri ( central power reserch institution ) , govt of india for a suitable minimum short circuit current for 1 second with initial pick of suitable ka . the fast electrode shall be approved by cpri , erda/nabl lab complete all as specified and directed . , m & l for pvc board of size 300x250mm having printed the format of earthing details such as date of measurment , resistance in ohms , next due date and other details near all the earthing in the station complete including fixing arrangement by means of pcc work and pvc board on angle iron structure by means of bolts complete all as specified and directed by engr-in-charge . , supply only salt suitable for earthing pit complete all as specified and directed . , supply only coal suitable for earthing pit complete all as specified and directed . , labour for cutting grass/herbs near installaion complete including cleaning of installation near earthing pits complete all as specified and as directed . , m&l for fibre- reinforced plastic ( frp ) earthing chamber cover for earthing pit 420mm ( top ) , 340mm ( base ) , 210mm ( height ) complete all as specified and directed including dismantaling old unservicable existing co