|
| 1 | M&L dismantling the existing earthing pit chamber made of PCC 1:2:4 type B-I (using 20 mm graded crushed stone aggregate) and cleaning the area including removal of broken PCC/excavated material 50 mtr away from site for recharging of earth pits complete all as specified and as directed |
| 2 | Repairing to existing defective galvanised iron 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 GI earth wire or GI / 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.Note (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/GIearth plate shall be measured and paid seperately. |
| 3 | All as per item No 2 hereinbefore but Repairing to existing defective copper earthing comprising conventional copper earth plate electrode 600 x 600 x 6 mm by taking out carefully earth plate |
| 4 | Supply only following parts required for recharging of earthing strip complete all as specified and directed. |
| 5 | Supply only Copper Earth plate of size 60 cm x 60 cm x3.15 mm including nut, bolt, washers made of copper alloy complete all as specified and directed by Engr-in-Charge |
| 6 | Supply only Galvanised iron Earth plate of size 60 cm x 60 cm x 6.30 mm including nut, bolt, washers made of copper alloy complete all as specified and directed by Engr-in-Charge |
| 7 | Supply only salt commercial for the earth pit all as specified and directed |
| 8 | Supply only charcoal dust for the earth pit all as specified and directed. |
| 9 | M&L in repair cement concrete earth pit chamber in PCC 1:3:6, type C-1, 450 X 450 X 50 mm thick in cement concrete 1:2:4, type B-1, duly reinforced with 8 mm dia mild steel TMT bars with fair finished concrete surfaces including necessary formwork and earth work as required/ordered at site, complete all as specified and as directed. |
| 10 | M&L in repair Pre-cast RCC Cover with Handle 2 Nos and hole of dia 40mm in Cement Concrete 1:2:4 (20mm graded stone aggregate) of size 540x540x60mm, reinforced with and including 10mm dia TMT Bars @ 250mm Centre to Centre in both ways, complete all as specified and as directed. |
| 11 | Supply only in repair CI funnel made as specified in SSR Part -I electrical plate No 3 fixed with GI pipe of watering by welding or threading etc including taking down old unserviceable complete all as specified and as diirected. |
| 12 | M&L Cutting grass, removing of surplus of Soil from old existing serviceable earthing chamber pit and aligning in the centre line of earthing strip including taking old and properly filled of soil around chamber and repair of chamber is required at site with PCC 1:3:6, type C-1 complete all as specified and directed |
| 13 | M&L for Painting of old existing cement concerete earth pit chamber in colour code as white for convintional, yellow for copper conventional and red for chemical including preparation of surface , removal of dust etc and applying two coat of suitable paint complete all as directed by Engr-in-Charge. |
| 14 | M & L for replacement of copper earthing comprising of galvanised iron earth plate electrode 600 mm X 600 mm X 6 mm thick buried directly in ground (earth pit not less than 2.25 m below ground level) with top edge of earth plate not less than 1.50 m below normal ground level, connected to GI wire of dia 4 sqmm 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 2020, Part–I (Specifications) and connected to main switch board / main DB’s / earthing test point including all necessary excavation and earth work in any type of soil, adequate quantity of charcoal dust and common salt all around the earth plate in alternate layers minimum 150 mm (compacted thickness) in all directions with and including watering pipe 20 mm dia GI medium grade, GI funnel made out of 0.63 mm thick GI sheet, wire gauge, GI protection pipe light grade 40 mm bore including testing on completion of job complete all as specified and directed. |
| 15 | M & L for replacement of copper earthing comprising of copper earth plate electrode 600 mm X 600 mm X 3.15 mm thick buried directly in ground (earth pit not less than 2.25 m below ground level) with top edge of earth plate not less than 1.50 m below normal ground level, connected to copper earth strip of size 20 X 3 mm 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 2020, Part–I (Specifications) and connected to main switch board / main DB’s / earthing test point including all necessary excavation and earth work in any type of soil, adequate quantity of charcoal dust and common salt all around the earth plate in alternate layers minimum 150 mm (compacted thickness) in all directions with and including watering pipe 20 mm dia GI medium grade, GI funnel made out of 0.63 mm thick GI sheet, wire gauge, GI protection pipe light grade 40 mm bore including testing on completion of job complete all as specified and directed. |
| 16 | S&F in repair as new test point terminal block made of gun metal or phosphorus bronze size (75x75x25)mm drilled and screwed including 3 nos. 8mm dia 25mm long hex head screws for holding the bronze plate including fastening/ bolting the roof down conductor and earth electrode over the bronze plate with copper bolts & nuts of suitable size, providing 10mm thick fibre sheet of size (15x15)cm below the test point to avoid direct contact with wall including enclosing the test point with 1.6mm thick MS sheet front openable box duly painted complete all as specified and as directed. |
| 17 | M&L for supply and pouring of Earth Enhancement Compound after mixing with water tested by NABL accredited lab in compliance to IEC 62561-7 with a resistivity < 0.12 ohm-m. It shall be free from bentonite and other hazardous substances. It shall be a permanent, non-corrosive material and will not leach any chemicals into the ground. It shall retain moisture even in high soil resistivity areas. complete all as specified and as directed.Note: Measurement of Chemical will be done in Powder form. |
| 18 | Material and Labour for earth continuity conductor or main galvanised iron Earth strip of size 24 x 4 mm burried in ground, fixed to wall, any other indicated situation for loop earthing and the like upto test point on necesarry insulators and fastning screws, rawl plugs complete all as specified and directed. |
| 19 | All as per item No. 9.00 hereinbefore but GI wire of dia 4 Sqmm |
| 20 | All as per item No. 9.00 hereinbefore but copper stip of size 20 x 3mm |
| 21 | All as per item No. 9.00 hereinbefore but copper stip of size 32 x 6 mm |
| 22 | S & F of 25 mm dia of GI tubing, light grade with all fittings including fixing arrangement with screws, reducer and clamps fasnig as protection of wire on wall/ roof with suitable type of clamp and proper fixing of insulator up to 15mtr building height etc complete all as specified and directed. |
| 23 | S & F of 40 mm dia of GI tubing, light grade with all fittings including fixing arrangement with screws, reducer and clamps fasnig as protection of wire on wall/ roof with suitable type of clamp and proper fixing of insulator up to 15mtr building height etc complete all as specified and directed. |
| 24 | S & F of 50 mm dia of GI tubing, light grade with all fittings including fixing arrangement with screws, reducer and clamps fasnig as protection of wire on wall/ roof with suitable type of clamp and proper fixing of insulator up to 15mtr building height etc complete all as specified and directed. |
| 25 | S & F High density polyethylene pipes (HDPE)of dia 32 mm as earthing contunuity protection laid in trenches/wall/floor complete all as specified and directed |
| 26 | M&L for Checking of Earth Resistance test of existing Galvanised iron/copper conventional/Chemical Earthing for getting suitable resistant test complete all as specified and directed by Engr-in-Charge.Note :- (a) Contractor will Check Earth Resistance of test points and will be recorded in Register, same will be put up to the Engineer-in-Charge through concern JE E/M. (b) Necessary T&P will be provided by the Contractor. (Tester should be caliberated from NABL accredited labs). (c) Contractor will be responsible for pouring of water in the Earth Pits Weekly at his own arrangement with Water Tanker, etc. (d) Checking of Earth Pits existing and improve it by watering, adding of chemical etc. (Chemical will be measured and paid separately) (e) Contractor will be responsible for marking of Earth Check date and due date on existing Plate with paint as specified by Engineer-in-Charge. (f) Contractor will be responsible for cleaning of bushes, grass, sand etc inside and all around upto 1.50 Metre Area of existing Earth Pit with tightening of Strip. (g) Cost of register for noting earthing results, location wise shall deemed to be included with the unit rate. Proforma of detail column will be printed as per the direction of Engineer-in-charge. (j) The contractor is responsible for mainting the value of chemical earthing as per station norms as directred by Engr-in-Charge. (k) Grid if any nos of earth pits having one test point shall be considered as one point for measurement. |
| 27 | Taking down old unserviceable of any type of earthing marker and Supply and fixing of Earthing identifier marker of size 25x25 mm flat iron and 5 mm thick length of flat iron 75 cm long which is 60 cm FI above the Ground level and 15 cm length FI below the Ground level and fixed with PCC 1:2:4 (12.5 mm graded aggregate) in post holes and the TOP of the flat iron arabolic/ semicirculer/ traingular/rectangular shape MS plate 1.6 mm thick of size 30 cm width and 20 cm height to welded/fixing to the flat iron including two coat of synthetic enamel paint over a coat of primer on steel surface cutting for Equipment Earthing/Lighting Earthing/L2 Earthing etc complete all including Earth Plate No/Description of Earthing/Type of Earthing on Plate with white paint including earth plate no and earthing resistance with earthing check date and earthing check due date complete all specified and directed by Engineer in charge. |
| 28 | M&L heavy duty porcelain/poly carbonate insulators of size 32 x 32mm to be fixed on wall/roof/pipe for laying of copper strip as roof/down conductor on building of height between upto 25 metres including nuts & bolts of brass of appropriate size including taking down old unserviceable one. all as specified and as directed by Engr-in-Charge |
| 29 | M&L for down conductor using 10 sqmm single core copper cable both ends thimbled properly with copper Lugs including taking down complete all as specified and directed. |
| 30 | M&L for down conductor using 16 sqmm single core copper cable both ends thimbled properly with copper Lugs including taking down complete all as specified and directed. |
| 31 | M & L for brazing work with copper brazing alloy rod with help of oxygen and LPG cylinder using required copper strip of size 20 mm x 3mm upto 30 cm length along with cleaning work of strip with descaling solution/emery paper which are laid as roof/down conductor complete all as specified and directed. |
| 32 | M & L for brazing work with copper brazing alloy rod with help of oxygen and LPG cylinder using required copper strip of size 25 mm x 3mm upto 30 cm length along with cleaning work of strip with descaling solution/emery paper which are laid as roof/down conductor complete all as specified and directed. |
| 33 | M & L for brazing work with copper brazing alloy rod with help of oxygen and LPG cylinder using required copper strip of size 32 mm x 6 mm upto 30 cm length along with cleaning work of strip with descaling solution/emery paper which are laid as roof/down conductor complete all as specified and directed |
| 34 | M & L for brazing work with GI brazing alloy rod with help of oxygen and LPG cylinder using required galvanised strip of size 20 mm x 3 mm upto 30 cm length along with cleaning work of strip with descaling solution/emery paper which are laid as roof/down conductor complete all as specified and directed. |
| 35 | Excavation in trenches in any type of soil not exceeding 1.5 mtr deep and not exceeding 1.5 mtr wide for laying of cables, RCC poles/stays and struts etc or /getting out cable cover and stacking for reuse/ credit , trimming sides and forming bottom surface all as specified and directed at site. |
| 36 | Returning, filling in including spreading, levelling, watering and well ramming in layers not exc 25 cm in soft/loose soil complete all as specified and directed. |
| 37 | Removing surplus excavated soil nexc 50 mtr and depositing where directed at a level n-exc 1.5 mtr above the starting point complete all as specified and directed. |
| 38 | Material and labour for soft/loose natural soil low resitivity suitable for Earthing along with filling,spreading at site all as specified as and as directed by Engr-in-Charge. |
| 39 | M&L for Construction of copper bus bar not less than 0.50 m x 25 mm x 4 mm duly fabricated including drilling of holes with fastern in wall/roof complete all as specified and directed. Please Enable Macros to View BoQ information |
