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| 1 | SCHEDULE OF WORKS |
| 2 | Material and labour for maintenance of the copper earthing of any type and size at scattared area as and when demanded by MES within 48 hours by pouring water, adding salt solution to maintain earth resistance within permissible limit, including carrying out earth test resistance of individual earth along with E-N values of connected equipment, submitting individual earth resistance & E-N values of connected equipment, and to rectify the defects in all respects to obtain permissible values; all as specified and as directed by Engineer-in-Charge. |
| 3 | All as per Item No 1 here-in-above, for GI earthing lead/strip of any type and size all as specified and as directed by Engineer-in-Charge. |
| 4 | All as per Item No above here-in-before but Chemical earthing of any type and size all as specified and as directed by Engineer-in-Charge. |
| 5 | NOTES for Sl Item Nos 1 to 3:(i) Testing of earthing shall be done by 3 Pole Fall of potential method.(ii) Cost of tools and materials required to perform the test is deemed to be included in the quoted rate.(iii)Water shall be issued by MES form Pump House/local water point.Contractor shall arrange tapping requirements to draw water for filling in earth pits.(iv)Test results shall be submitted duly obtaining signature of User\"s on demand as specified (v) Funnel, bucket for pouring of water shall be arranged by the contractor on his own,(vi)Cost of Common salt shall be included in quoted rate of this item.(vii) Contractor shall submit user certificate duly signed by JE, Engineer-in-Charge and User for payment purpose,(viii) Chemical required will be measured and paid separately for chemical earthing |
| 6 | Material and labour for, Tripod Earthing 50 mm dia - 3 numbers of Chemical earthing (maintenance free) corrosion resistant earth electrode copper cladded, copper coating thickness of 250 microns,high tensile low carbon COPPER BONDED ROD ELECTRODES WITH 99.9% with 25KA current discharge test as CPRI, of length 3.0m as per UL 467, with suitable compressive coupler planted at depth not less than 3.0m of bore 100mm below gorund level and duly covered with low resistant superior conductive powdered non corrosive, highly hydrous earth enhancing material, including connecting upto common bus bar grid of size 25 x 3 mm to achieve optimum low earth resistance on inspection/ testing complete all as specified and as directed. |
| 7 | Notefor Item No. 4 :-(a) The make shall be of manufactures as listed in particuler specification here-in-after.(b) The earthing shall comply to IS-3043 and the earth resistance shall be less than 1 ohm(c) The electrode shall carry UL marking and manufacturer\"s name(d) The quoted rate shall also deemed to be included the following:-(i) Survey of earth resistance if required for testing of the earth in presence of departmentrepresentative.(ii)The electordes shall be interconnected through 25 mm x 3 mm copper strip as required and Grid point/ testing point shall be connected with 25 x 3mm copper strip mounted on porcelain insulators and enclosed in suitable enclosure of mild steel 2mm thick duly painted with two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer.(iii)The carbon based earth enhancement compound shall have very minimum resistance value (normally less than 0.12 Ohm) to keep the earth resistance at the lower level. The back fill compound shall be filled with highly conductive and eco friendly ground enhancing compound as per IEC 62561-7 shall not be less that 90KG per pit.(iv)Testing of earth shall be carried out alongwith the departmental representive and report shall be submitted.(v) Earthwork such as auguring and making good the surrounding area shall carried out in any type of soil. The bore hole shall be not less than 80mm dia and 3.0m deep from ground level.(vii)Earth termination clamps shall be provided to facilitate connection to equipment. |
| 8 | Supply, installation, testing & commissioning of Digital Grounding Device 120 kA Single phase 3 wire portable type with resistance sensor built in low impedance equipment grounding and bonding system, provides 100% protection against Lightning surges, static charge, noises,ESD,EPR and eliminates abnormal electrical disturbances which enter from power and other service lines and ensuring clear bonding potential (earth to neutral voltage) less than 1.0 V having a digital 6 digit lightening surge counter, self-health visual status indicator with facility to monitor online input voltages & earth to neutral voltages pre-wired pulverulent body painted metal enclosure to be connected in parallel to the powersupply circuit, tested and certified from CPRI, MIL STD810G, IEC61000-6-1,IEC 61000-6-3, IEC 61643-11-2011 & confirming to ISO 9000 & ISO 14001-2015 & CE complete all as specified and as directed.Make : - Model: DSE-MII 1P3 120 of make DSS Digital Equipement protection Co.or equivalent model specified here-in-after. |
| 9 | Dismantling the earth chamber, Excavation and removing unserviceable earthing materials along with earth electrodes from the existing earth pits pertaining to installations/ buildings and providing material and labour for maintenance free earthing using corrosion resistant earth electrode copper cladded, copper coating thickness of 250 microns, 17.20 mm dia, high tensile low carbon COPPER BONDED RODS WITH 99.9% with 25KA current discharge testfrom CPRI of length 3.0m as per UL 467, with suitable compressive coupler planted at depth not less than 4.6m of bore 100mm below gorund level, covered with low resistant superior conductive powdered non corrosive, highly hydrous earth enhancing material all as directed including connecting upto common bus bar grid of size 25 x 3 mm to achieve optimum low earth resistance on inspection/ testing complete all as specified and as directed. |
| 10 | Note for Item No 6:-(a) The make shall be of manufactures as listed in particuler specification here-in-after.(b) The earthing shall comply to IS-3043 and the earth resistance to be obtained shall be less than 1 ohm(c) The electrode shall carry UL marking and amanufacturer\"s name(d) The quoted rate shall deemed to be include for following:-(i) Survey of earth resistance when required for testing of the earth shall be carried out in presence of department representative.(ii)The Grid point/ testing point shall be of 25 x 3 mm copper bus bar of length 150mm mounted on porcelain insulators and enclosed in suitable enclosure of mild steel 2mm thick duly painted with two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer.(iii)The carbon based earth enhancement compound shall have very minimum resistance value (normally less than 0.12 Ohm) to keep the earth resistance at the lower level. The compound shall be filled with highly conductive and eco-friendly ground enhancing compound as per IEC 62561-7 shall not be less that 75KG per pit.(iv)Testing of earth shall be carried out in presence of department representive and report shall be submitted.(v) The exothermic joints with copper bus bar of size 25 mm x 3 mm upto test point shall be connected with 32 mm light grade GI protection pipe shall be included upto 7.5 m.(vi) Earthwork such as auguring and making good the surrouding area shall carried out in any type of soil. The bore hole shall be not less than 80mm dia and 4.60m deep from ground level.(vii) Earth pit chamber and cover shall be of HDPE with top dia 308mm, bottom dia not less than 308mm and of height not less than 214mm with PVC cap.(viii)Earth termination clamps shall be provided to facilitate connection to equipments. |
| 11 | Dismantling earth chamber of earth pits pertaining to installations / building after carrying out necessary excavation, removing unserviceable earthing materials, earth electrodes and providing Material and labour for earthing with GI earth plate electrode 600 x 600 x 6 mm thick burried directly in ground vertically to depth of not less than 2.25 mtr deep below normal ground level with top edge of the plate not less than 1.5 mtr below ground level connected to GI earth wire of 4mm by means of bolts, nuts, washers of GI and provision of earth lead, GI protection pipe with 15mm light grade galvanized including necessary earth work in any type of soil, PCC 1:3:6type CI (using 20mm graded stone aggregate) earth chamber and 1:2:4 type B1 RCC cover fitted with 50mm thick with 6mm dia MS bars@ 100 mm c/c both ways.. complete all as shown in SSR Pt - 1 electrical plate No 3. Note : i) Quoted rate shall deemed to include cost or excavation and earth work PCC Chamber, funnel cover etc.ii) GI earth wire of 4 mm dia and GI light grade protection pipe 15 mm dia upto 7.5 m shall deemed to be included in quoted rate under this item.iii) GI earth wire of 4 mm dia and GI light grade protection pipe beyond 7.5 m will be measured and paid under respective items. |
| 12 | Dismantling earth chamber of earth pits pertaining to installations/ buildings, after carrying out necessary excavation and removing unserviceable earthing materials, earth electrodes providing Material and labour for earthing with GI earth plate electrode 600 x 600 x 6 mm thick burried directly in ground vertically to depth of not less than 2.25 mtr deep below normal ground level with top edge of the plate not less than 1.5 mtr below ground level connected to GI earth strip of 25x4mm by means of bolts, nuts, washers of GI and provision of earth lead, GI protection pipe with 15mm light grade galvanized including necessary earth work in any type of soil, PCC 1:3:6type CI (using 20mm graded stone aggregate) earth chamber and 1:2:4 type B1 RCC cover fitted with50mm thick with 6mm dia MS bars complete all as shown in SSR Pt - 1 electrical plate No 3. Note : i) Quoted rate shall deemed to include cost or excavation and earth work PCC Chamber, funnel cover etc.ii) GI earth strip of size 20 mm x 3 mm. and GI light grade protection pipe 15 mm dia upto 7.5 m shall deemed to be included in quoted rate under this item.iii) GI earth strip and protection pipe beyond 7.5 m will be measured and paid under respective items. |
| 13 | Dismantling earth chamber of earth pits pertaining to installations/ buildings, after carrying out necessary excavation and removing unserviceable earthing materials, earth electrodes providing Material and labour for earthing complete with Copper earth plate electrode 600 mm x 600 mm x 3 mm thick burried directly in ground earth pit not less than 2.25 Mtr deep below ground level with top edge of the plate not less than 1.5 Mtr below normal ground level, filling with alternate layers of charcoal& common salt Crystal, in and including back filling compund in layers and filling up with black cotton soil upto the top edge/ ground level andconnecting to copper earth strip of size 20 mm x 3 mmby means of bolts, nuts, check nuts & washers of copper and connecting to earth dolly, equipment all as shown in electrical plateNo. 5 of SSR Part I of 2009 & testing complete including 40mm dialight grade GI pipe upto 7.5 mtr long, excavation in any type of strata, PCC ( 1:3:6 ) type C1 earthing chamber, pre cast slab 50 mm thick in cement concrete ( 1: 2 : 4 ) type B 1 ( reinforced with welded steel wire fabric (XPM) weight not less than 4 Kg / Sqm with frame,including 20 mm bore water pipe medium gradeGI Tubing includingGI Funnel , wire mesh etc. NOTE :- i) Copper earth continuity conductor of size 20 mm x 3 mm. and GI light grade protection pipe 40mm dia upto 7.5 m shall deemed to be included in quoted rate under this item.ii) Copper strip and protection pipe beyond 7.5 m will be measured and paid under respective items.iii) Quoted rate shall deemed to include cost or excavation and earth work PCC Chamber, funnel cover etc. |
| 14 | Dismantling earth chamber of earth pits pertaining to installations/ buildings, after carrying out necessary excavation and removing unserviceable earthing materials, earth electrodes providing Material and labour for Chemical Earthing Complete with copper earth plate electrode 90cm x 60cm x 5mm thick burried directly in ground earth pit not less than 5.0 M deep below normal ground level for earth pit of size 1.6 m X1.6 m X 5.0 m earth plate, connecting to copper strip of size 50 x 6 mm by brazing only, earth strip protected with light grade GI Pipe 80 mm diamm bore from copper earth plate electrode and upto and including the earth test point made of gunmetal Phosporous bronzeof size 75x75x25 mm, providing 25 mm bore water pipemedium grade, GI Funnel, wire mesh, five alternative layers of charcoal (250 KG ) & salt crystal (200 KG) with top two inch layers filled with BFC(100 KG) refilling with black cottonsoil above theBack filling compound and removal of surplus excavatedsoiland depositing at place wheredirected, PCC Pit in PCC ( 1:3:6 ) type C1 using 20 mm gradedstoneaggregate, 40 mm thick RCC ( 1:2:4 ) type B 1 using 20 mm grade aggregate cover reinforced with 8mm dia TMTbars @ 75 mm c/cboth waysincluding MSangle iron frame of 40 X40X 3 mm etc, watering the earth pitto acheive earth resistance not more than01 OHMincltestingall as directed andspecified.Notes :i) Quoted rate shall deemed to include cost or excavation and earth work PCC Chamber, funnel cover etc.ii) Copper earth strip and GI light grade protection pipe 80 mm dia upto 7.5 m shall deemed to be included in quoted rate under this item.iii) Copper earth strip and GI light grade protection pipe beyond 7.5 m will be measured and paid under respective items. |
| 15 | Material and labour for, earth continuity conductor or main earthing lead of 4mm dia galvanised iron fixed to wall on batten or recess or chases or buried in ground or draw in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc complete all as specified and as directed. |
| 16 | Material and labour, for 25x4mm galvanised iron earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or draw in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc complete all as specified and as directed. |
| 17 | Disconnection and removing unserviceable test block from walls of buildings and providing material and labour for Test point terminal box made out of gunmetal or phosphorous bronze of size 75x75x25mm drilled and screwed including 3 nos 8mm dia 25mm long hexaognal srews along with fixing arrangements complete all as specified and as directed. |
| 18 | Disconnection and removing unserviceable / broken / bentAluminiumstrip from the roof/ down conductors of the buildings and providing material and labour for Aluminium strip of size 25 mm x 3.15 mm complete including cut to length and size to match the existing system and fixing the same to the wall / roof on suitable porcelin insulators along with fixing materials complete all as specified and directed. Note :i)Porcelain insulators will be measured and paid separately under the respective of the scheduleii) Safety measures and materials required for removing unserviceable earth strips from any height of technical buildings (Apprx Upto 10 mtrs height) shall deemed to be included in the quoted rate |
| 19 | All as per item No 14 here in above, but for Copper strip of size 20 mm x 3.15 mm |
| 20 | All as per item No 14 here in above, but for Copper strip of size 32 mm x 6 mm |
| 21 | All as per item No 14 here in above, but for Copper strip of size 50 MM x 6 mm |
| 22 | Taking down copper strip from walls and refixing copper strip of size 32 mm x 6 mm strip in as grid conductor / strip, including providing necessary insulators all as directed by Engineer-in-Charge. |
| 23 | Taking down copper strip from walls and refixing copper strip of size 20 mm x 3 mm strip in as grid conductor / strip, including providing necessary insulators all as directed by Engineer-in-Charge. |
| 24 | Taking down aluminium strip from walls and refixing aluminium strip of size 25 mm x 3.15 mm strip in as grid conductor / strip, including providing necessary insulators all as directed by Engineer-in-Charge. |
| 25 | Disconnection and removing Brass nut and bolt connected to the copper earth conductors and S&F copper nut bolts and washers of size 5/6\"to the copper earth conductors including making required size of the holes to fix the bolts complete |
| 26 | Material and labour for brazing of copper strips with necessary brazing material/ gas cylinders/ brazing rods and in situation like on walls, floors, roofs, bends etcall as directed and spfd for copper strip of 20 x 3 / 32 x 6 / 50 x 6mm |
| 27 | Cutting existing road of width0.25 m x 0.25 m depth x 3.0 m lengthfor layingthe 40 mm dia GI pipe light grade with all fittings such as bends, sockets, reducers union etc, excavation in any type of soil, returning, refilling and removal, and filling the trench with PCC 1:4:8 type D2, and making the the road cut portion good all as directed by Engineer-in-Charge. Note : GI pipe light grade shall bemeasured and paid under the respective item |
| 28 | Disconnection and removing old unserviceable pipes galvanised iron \"Medium grade\" Supply, jointing, testing and laying in trenches/floor/wall etc pipes galvanised iron \"Medium grade\" ISI marked with all running fittings of size 15 mm bore complete all as specified and as directed. |
| 29 | All as per item No 24 ere-in-before but, GI pipe Medium grade with all fittings such as bends, sockets, reducers union etc, completeof size20 mm diacomplete all as specified and directed. |
| 30 | Disconnecting and removing unserviceable, bib taps, Supply and fix bib taps, cast copper alloy with crutch or butterfly handle, screwed down for iron pipe of size 15 mm bore complete all as specified & as directed. |
| 31 | Supply and fix in repairs, Stop / Gate valve 20 mm dia,cast copper alloy,screwed down, high pressure,with crutch or butterfly handle, screwed both ends for iron pipe. |
| 32 | Supply and fix in repairs, Rotational moulded polyethylene water storage tank of Capacity 750 Ltrs (cylindrical vertical with closed top) hoisted and fixed in position all as specified in SSR Part I. |
| 33 | Material and labour, for Cutting existing 25/40/20 mm steel tubing for making alterations or additions. |
| 34 | Supply and fix in repairs, Ball brass valve of size 20mm,high pressure, with polythene float and flynut complete, screwed for iron pipe. |
| 35 | Excavation in trenches not exceeding 1.5 mtr wideand not exceeding 1.5 m in depth for taking out /for layingunder ground cables/pipes etc and getting out in soft/loose soil. |
| 36 | Returning filling in incl spreading levelling,watering and well ramming in layers n-exc 25 cms in soft/loose soil. |
| 37 | Removing excavated soil to a distance n-exc 50 mtr and depositing where directed at a leveln-exc 1.5 mtr above the starting point. |
| 38 | Supply and lay black cotton soil in layers not exceeding 15cm spread levelled and rammed including watering around earth pits as directed by Engineer-in-Charge. |
| 39 | M&L for porcelain vitreous insulator to accommodate earth continuity conductor of size 25 to 32mm along with fixing materials complete all as directed.Make:- Jaipuria / Southern Electricals / |
| 40 | Supply onlycopper sulphate |
| 41 | Supply only Magnesium Sulphate |
| 42 | M&L for laying commercial/ sea salt in layers for strengthening of existing earthings all as specified and directed. |
| 43 | Supply and Lay in trenches GI pipe light grade 50 mm dia including all fittings including taking down corrodedone complete all as specified and as directed |
| 44 | Supply and laid in trenches fixed on walls / on roofGI pipe light grade with all fittings such as bends, sockets, reducers union etc, completeof 40 mm diaall as directed and spfd. |
| 45 | Supply and Lay in trenches GI pipe light grade 80 mm dia with all fittings including taking down unserviceable pipe complete all as specified and as directed |
| 46 | Supply and fix GI pipe light grade 15 mm dia including on walls and ceilings or laid on floors with all fittings for GI Wire protection including taking down unserviceable pipes complete all as specified and as directed. |
| 47 | Material and labour, for PVC insulated single core unsheathered multi strand cable green in colour conforming to IS with flexibe bright annealed copper conductor of size 35 sqmm suitable for voltage grade upto 1100 V for earthing and including connecting of with suitable copper lugs , nuts , bolts and washer compete all as per specify and directed by Engineer in Charge . |
| 48 | All as per Sl item No 43 here-in-above but of cable of cross sectional area of 50 Sqmm |
| 49 | Dismantling unserviceable air termination rod, providing Material and labour for air termination, single pointed aluminium rod 12 mm dia and 300 mm long including fixing arrangement with porcelain saddles/insulators, fixing screws etc. complete all as specified and as directed. |
| 50 | Dismantling unserviedable air termination rod providing material and labour for air termination, single pointed copper rod 12 mm dia and 300 mm long including fixing arrangement with porcelain saddles/insulators, fixing screws etc. complete all as specified and as directed. |
| 51 | M & L for earthing pit display board made out of 3 mm thick MS sheet of size 30 x 35 cm welded to 75 cm long 25 x 25 x5 mm thick MS angle iron grouted in PCC 1:3:6 (using 20 mm graded stone aggregate ) to a depth of 20 cm below GL and including applying two coats of synthetic enamel paints of approved coloured over a coat of red oxide primer on all expoxed steel surface and writing the letters on the plate for showing the following details : a) Earthing Pit No., b) Date of Measurement, c) Next Due Dated) Standard Value |
| 52 | M&L in repairs earth pit chamber, size 300mm x 300 mm (internal dimensions) and wall thickness 120mmwith PCC 1:3:6 type C-1 using 20mm graded stone aggregates including RCC cover 50mm thick in cement concrete 1:2:4 type B-1 reinforced with 6 mm dia MS round bars @ 15 cm c/c both ways complete all as specified and directed. |
| 53 | S&F in repairs precast RCC earth pit cover, size 540mm x 540mm x 50mm in cement concrete 1:2:4 type B-1 duly reinforced with 6 mm dia MS round bars @ 15 cm c/c both ways includinghandle complete all as directed. |
| 54 | Disconnection and removing unserviceable RCC earth pit cover of size 400x400x40mm from existing earth pit and providing M&L PCC type C-1(1:3:6) with 20mm graded agreegate with necessary form work for making earth pit cover all as specified in SSR Part-I in different locations and as directed by Engineer-in-charge. |
| 55 | Dismantling and removing unserviceable earth pit chamber and providing M&L for RCC chamber of size 40cm x 40cm x 30 cm suitable for earth pit chamber made out of RCC (1:3:6) using 20mm graded aggregate complete along with necessary foundation all as spfd as per SSR Part 1 all as to match the existing earthing pit as shown at site complete. |
| 56 | M&L painting earthing chambers with two coats of synthetic enamel paint in red / yellow colour and writingln bold black colour letters 1.5cm height \"Chem Pit-1, Conventional Pit-5\"complete all as specified and directed. |
