SPECIAL REPAIR TO CERTAIN EARTH PITS , PROV OF MAINTENANCE FREE CHEMICAL EARTH PITS AND CERTAIN MINOR WORK AT AIR FORCE STATION KALAIKUNDA UNDER GE (AF) KALAIKUNDA

Amount

Taking down old unserviceable GI/Copper earth plate from soft and hard soil at any location as directed by Engineer -in- charge.

M&L earthing complete with copper earth plate electrode 600mm x 600mm x 3 mm thick burried directly in ground (Earth pit not less than 3 m deep below ground level) with top edge of the plate not less than 2.2 m below ground level connected to copper strip 20 x 3 mm as earth lead by brass nut bolts washer including brazing the copper strip with copper plate as shown in electrical plate No 3 connected to earth test point including necessary excavation any type of soil, filling charcoal and salt around the plate in layers , filling the pit with agriculture soil free from stones, to be bring from out side defence land, construction of PCC earth pit chamber, RCC chamber cover plate, wire mess, funnel, test point, 40 mm dia GI protection pipe light grade and 32 mm GI peforated pipe for watering etc complete and testing on completion. The electrode and lead shall be of copper all as specified and directed by Engr-in-charge (Copper strip upto 7.5 RM will be included in the item rate and copper strip beyond 7.5 RM will be measured seperately. (NOTE: 1. The unit rate includes for protection GI pipe and watering pipe of 40 mm bore including excavation for earth pit in any type of soil/ disintegrate rock. 2. Contractor has to bring agriculture soil from outside of defence land and fill in earth pit to achieve desired result as the soil resistiviy is very high are deemed to be included in the unit rate.. 3.The cost of Copper strip of size 20X3 mm from top of earth plate upto 7.5 meter above ground level is deemed to be included in the unit rate of above item.and copper strip beyond 7.5 RM will be measured seperately. 4. All the joints in copper strip and connection with Earth Plate to be welded through brazing and in addition by proving brass nut bolt and washer are deemed to be included in the unit rate. 5. Cost of brazing/ welding and brass nut bolts and washer are deemed to be included in the unit rate.6. Cost includes disposal of excavated soil from site and clear the site before completion of work at that location

Taking out old unserviceable or serviceable GI/ Aluminum/ Copper earth strip of any size and keeping the serviceable strip in safe condition for relaying/refixing the same strip in existing or new location by providing procline insulators in any height and any location and old unserviceable strip for giving credit to contractor as directed by Engineer In charge. .

Supply and fixing copper strip of size 20 x3.15 mm as earth continuity conductor or main earthing lead fixed on "V" type porcelain insulator ( ceramic bus bar support insulator off white colour of min size of 36 mm width x 60 mm length with 36 mm width bus bar mounting base) saddle to wall, buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required including copper strip brazing to each joints and connected with by providing brass nut bolts and washers all as specified and directed by Engr in Charge

Supply and fixing in repair copper strip of size 20 x3 mm as earth continuity conductor or main earthing lead fixed on "V" type porcelain insulator ( ceramic bus bar support insulator off white colour of min size of 36 mm width x 60 mm length with 36 mm width bus bar mounting base) saddle to wall, buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required 20 x 3 mm copper strip brazing to each joints and connected with by providing brass nut bolts and washer all as specified and directed by Engr in Charge.

Supply and fixing in repair copper strip of size 32 x 6 mm as earth continuity conductor or main earthing lead fixed on "V" type porcelain insulator ( ceramic bus bar support insulator off white colour of min size of 36 mm width x 60 mm length with 36 mm width bus bar mounting base) saddle to wall, buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required 20 x 3 mm copper strip brazing to each joints and connected with by providing brass nut bolts and washer all as specified and directed by Engr in Charge.

Supply and fixing in repair copper strip of size 50 x 6 mm as earth continuity conductor or main earthing lead fixed on "V" type porcelain insulators ( ceramic bus bar support insulator off white colour of min size of ( size of 50 mm width x 70 mm length with 50 mm width bus bar mounting base)) saddle to wall, buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required 50 x 6 mm copper strip brazing to each joints and connected with by providing brass nut boltsand washer all as specified and directed by Engr in Charge.

Supply and fixing aluminium strip of size 25 x 3 mm as earth continuity conductor or main earthing lead fixed on "V" type porcelain insulators ( ceramic bus bar support insulator off white colour of min size of ( ceramic bus bar support insulator off white colour of min size of 50 mm width x 70 mm length with 50 mm width bus bar mounting base)) saddle to wall, buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required strip to be connected with by providing brass nut bolts and washers all as specified and directed by Engr in Charge.

M & L for Refixing of existing serviceable copper / aluminium / GI strip retrieved under item No. 3 above, on top of "V" type procelain insulator ( ceramic bus bar support insulator off white colour of min size of 36 mm width x 60 mm length with 36 mm width bus bar mounting base for fixing strip of width up to 32 mm and suitable size , brass nuts and bolt ,screws, aluminium cleats etc.( Procelain insulator if replaced shall be measured separetly) duly straightened properly and fixing in neat dressed manner as directed by Engineer in charge. Note: (i) Proclelain insulator to be measured and paid seperately under relevant item

M& L for porcelin insulater 10 BM heavy duty (ceramic bus bar support insulator off white colour of min size of 50 mm width x 70 mm length with 50 mm width bus bar mounting base for fixing strip of width above 32 mm to 50 mm fixing on wall for supporting the copper strip/Aluminium strip/GI strip including suitable size brass, nuts and bolts, washers, drilling hole on wall to fix porcelain insulator , fixing insulator by providing steel screws etc complete all as specified and directed by Engineer-in-charge.( Note : Cost of brass nut bolt and washer deemed to be included in unit rate of item).

M& L for porcelin insulater 4 BM heavy duty (ceramic bus bar support insulator off white colour of min size of 36 mm width x 60 mm length with 36 mm width bus bar mounting base for fixing strip of width up to 32 mm fixing on wall for supporting the copper strip/Aluminium strip/GI strip of size 20 x 3 mm and up to 32 mm width including suitable size brass nuts and bolts, washers, drilling hole on wall to fix porcelain insulator , fixing insulator by providing steel screws etc complete all as specified and directed by Engineer-in-charge. ( Note : Cost of brass nut bolt and washer deemed to be included in unit rate of item).

M&L for in repair carrying out brazing to earthing strip joint between earthpit and test point after removing the nut bolt ,scraping the strip,preparing the surface all as specified by Engr-in-charge

M&L for carrying out brazing to earthing strip joint between earthpit and test point after removing the nut bolt ,scraping the strip,preparing the surface all as specified by Engr-in-charge

S&F in repair thermoplastic(polycarbonate) junction box for test point without terminal block of dimension 130 x 180 x 77 mm IP 66 halogen free and weather proof including four hexagonal anticorrosive screws for out door installation including taking down unserviceable one. Make : Hensel- Cat part No. KF 0600 H

S&F for thermoplastic(polycarbonate) junction box for test point without terminal block of dimension 130 x 180 x 77 mm IP 66 halogen free and weather proof including four hexagonal anticorrosive screws for out door installation Make : Hensel- Cat part No. KF 0600 H

M&L in repair for Test point terminal block made of gun metal or phosphorus bronze size 75 x 75 x 25 mm drilled and screwed incl 3 Nos 8mm dia 25mm long hexagonal head screws for fixing strips to test point including necessary fixing arrangement to fix test point terminal block in junction box all as specified and directed.

M&L for Test point terminal block made of gun metal or phosphorus bronze size 75 x 75 x 25 mm drilled and screwed incl 3 Nos 8mm dia 25mm long hexagonal head screws for fixing strips to test point including necessary fixing arrangement to fix test point terminal block in junction box all as specified and directed.

Supply & Fixing hexagonal head brass nut bolt and washer (Bolt size not less than 30 mm long from under side of head to end and not less than 6 mm dia) as specified and directed by Engr-in -charge.

Supply & Fixing hexagonal head brass nut bolt and washer (Bolt size not less than 50 mm long from under side of head to end and not less than 7 mm dia) as specified and directed by Engr-in -charge.

Taking down old broken and damaged earth pit chamber and M & L for construction of new earth pit chamber with RCC cover and handle of as per electrical plate No 3 of SSR Part Iand PCC 1:2:4 Type B-1 including GI funnel and wire mesh , and synthetic enammeled paint 2 coat as per colour code all as specified and directed by Engineer-in-charge.

M & L GI tubing medium grade 40mm bore as in supports to air termination rods embedded in PCC bed blocks all as directed. Note:- PCC bed blocks shall be measured and paid saperately under relevant item of this schedule.

M&L for PCC (1:3:6), type C-2 (using 40 mm graded stone aggregate) for foundation for pole mass concrete etc including demolition of existing complete all as specified and directed.

M&L for PCC (1:2:4), type B-1 (using 20 mm graded stone aggregate) for foundation for pole mass concrete coping etc including demolition complete all as specified and directed.

M&L for "V" porcelain insulator of suitabe size for fixing copper strip including brass nuts and bolts complete all as specified and directed.

M & L in repair Air termination, single pointed, aluminium rod 12mm dia and 300mm long complete fixed on wall/roof including fixing arrangement all as specified and directed..

M & L in repair Air termination, single pointed, copper rod 12mm dia and 300 mm long complete fixed on wall/roof including fixing arrangement all as specified and directed..

Supply and fixing stainless steel wire rope of minimum thickness 6 mm for holding GI pipe of 50/ 40 mm dia to stand straight vertical mounted with lightening arrester spike complete all specified and directed by Engineer -in-charge

Supply and fixing stainless steel wire rope clamp grip for rope clamping 'U' with nut bolts washer etc all as specified and directed by Engineer -in-charge

Supply and fixing stainless steel wire rope sling of minimm thickness of 6mm complete all as specified and directed by Engineer -in-charge

Supply & laying of UPVC pipe of size 25 mm dia for incorporating of earthing copper strips complete all as specified and directed by Engineer -in-charge

S&F in repairs PVC insulated, Single core armoured sheathed copper conductor cable, 1100 Volt, Conf to IS 7098, ISI marked of size 70 Sqmm including fixing it on wall or laying on floor by providing saddles, including connecting terminals by providing copper lugs, brass nut and bolt with washer of suitable size as per site requirement to connect the cable including taking down u/s deterioted aluminium/ copper cable complete all as specified and directed by Engineer in Charge. Make : Havells / Polycab/ Finolex.

S&F in repairs PVC insulated, Single core armoured sheathed copper conductor cable, 1100 Volt, Conf to IS 7098, ISI marked of size 185 Sqmm including fixing it on wall or laying on floor by providing saddles, including connecting terminals by providing copper lugs, brass nut and bolt with washer of suitable size as per site requirement to connect the cable to ESS LA by taking down LA pipe and connecting the cable and refixing the LA pipe as existing at SRE tower of min 25 mtr height and connecting the second end to earthing pit including taking down u/s deterioted aluminium/ copper cable complete all as specified and directed by Engineer in Charge. Make : Havells / Polycab/ Finolex.

S & F in repair Brass Copper lightening arrester 9.2 mm diameter and 915 mm in length with 5 spikes and base plate 8.5 x 8.5 cm for building protection coverage of 45 degress from the top point 1.85 m all as specified and directed by Engineer in Charge.

M & L for Fabrication of display board for earth pit nos, lacation and periodical test results for power circuit earthing, machinary earthing ,lightening conductor earthing, made of MS sheet 4.0 mm thick sheet, rectangular welding on 12 mm dia rod of height from ground level 30 cm including fixing in PCC 1:2:4 with 20 cm X 20 cm X 20 cm (below ground level) grade aggregate foundation to be carried out at location as directed . Dimention of board shall be 30 cm X 25 cm. or any other dimention not more than 0.075 sq mtr of MS Board The instruction shall be written black painted board in white letters not less than 2 " size for all type of boards complete all as specified and dierected by the Engineer -in-charge including taking down unserviceable one complete all as directed. Note : (a) All necessary MS sheet, aluminium screws and PCC works etc are deemed to the rate quoted by the contractor (b) The fabrication of condents on the screen printing shall be collected before printing the board from Engineer-in-charge. The matter to be write on board to be collected from Engineer incharge (c) Contractor shall fabricate display board of different shape (Specified for signal /PS/PL/EQ earthing) according to earth pit which it displayed

M & L for Fabrication of display board for earth pit nos, lacation and periodical test results for power circuit earthing, machinary earthing ,lightening conductor earthing, made of MS sheet 4.0 mm thick sheet, rectangular welding on 12 mm dia rod of height from ground level 30 cm including fixing in PCC 1:2:4 with 20 cm X 20 cm X 20 cm (below ground level) grade aggregate foundation to be carried out at different location technical area/domestic area . Dimention of board shall be 30 cm X 25 cm. or any other dimention not more than 0.075 sq mtr of MS Board The instruction shall be written black painted board in white letters not less than 2 " size for all type of boards complete all as specified and dierected by the Engineer -in-charge. Note : a) All necessary MS sheet, aluminium screws and PCC works etc are deemed to the rate quoted by the contractor (b) The fabrication of condents on the screen printing shall be collected before printing the board from Engineer-in-charge. The matter to be write on board to be collected from Engineer incharge (c) Contractor shall fabricate display board of different shape (Specified for signal /PS/PL/EQ earthing) according to earth pit which it displayed

Taking down old unserviceable chemical earthing/ pipe earth electrode from soft and hard soil at any location as directed by Engineer -in- charge.

M&L for Advance encapsulated compound based Chemical earthing CPRI tesed maintenance free , pipein -pipe technology upgraded (Zinc & Alloy coated). , Zinc & Alloy coated (80 -100) microns with pure zinc (99.9%) & Alloy coating (200-250) microns. Earthing system conforming IS 3034. The outer and inner pipe should be 76.2 mm and 41.9 mm dia respectively of 3 mtrs long zinc coated with with additional special alloy coating 300mm on top side for additional protection of the terminal . The annular space between the pipes to be filled up with Compact fill (CF) (Crystalline Conductive) mixture which should be machine pressed in the pipes not disintegrate or collapse when outer pipe corrodes . The inner pipe should be extended with terminals for connectivity.The job includes boring of 200 mm dia bore up to 3.5 mtr depth in any type of strata/ soil for placing/ lowering the pipe in pipe electrode , filling of pure conductolite back filling compound (BFC Conductolite ) having excellent moisture retaining capacity in 200 mm bore all around the electrode min 3 bags of 25 KG per pit per unit.The earth pit should be provided with a FRP earth pit cover for protection and safe guard of terminals. The material of earth electrode should have good electrical conductivity & anti corrosion property in wide range of soil conditions. The job also include M & L for in PCC(1:3:6) type C-1 around the FRP cover for support including TMT bar as per manufacturer,s instruction and foundation and colouring the PCC work with desired colour complete all as specified and directed. Make : ASHLOK ( Model ASEEL-39 AC 3 mtr length 76.3 mm dia Note :- (i) Design of earth electrode should be of pipein-pipe technology .(ii) Contractor have to submit literature of earth electrode and get the make approved of GE before rocurement. (iii) The earth electrode shall be CPRI tested to withstand short current test for 60kA rms for 1.0 second and 150kA for peak current. (iv) Contarctor has to fill pure back fill compound all around the earth electrode in 200 mm bore up to full depth of bore. (v) Copper strip will be laid below 20 cm from ground level and connecting the test point through plinth protection using HDPE pipe for protection, necessary cost of repair to plinth protection and brazing and welding deemed to be included in the item. (vi) Contarctor shall submit the test report of earthing after satisfactorily completion. (vii) Contractor shall remove and disposed off the soil excavated from boring and clear the site before completion of work.

M&L for Advance encapsulated compound based Chemical earthing CPRI tesed maintenance free , pipein -pipe technology upgraded (Zinc & Alloy coated). , Zinc & Alloy coated (80 -100) microns with pure zinc (99.9%) & Alloy coating (200-250)microns.Earthing system conforming IS 3034. The outer and inner pipe should be 76.2mm and 41.9mm dia respectively of 3 mtrs long zinc coated with with additional special alloy coating 300mm on top side for additional protection of the terminal . The annular space between the pipes to be filled up with Compactfill (CF) (Crystalline Conductive) mixture which should be machine pressed in the pipes not disintegrate or collapse when outer pipe corrodes. The inner pipe should be extended with terminals for connectivity.The job includes digging the pits in any type of soil of min size 1000 X 1000 X 3050mm depth taking out excavated soil,lowering the pipe in pipe earth electrode,filling of pure conductolite back filling compound (BFC Conductolite ) having excellent moisture retaining capacityminimum 4 bags of 25 KG per pit per unit in 300 mm around the electrode . Refiiling the pit with agriculture soil free from stones, to be bring from out side defence land as to get less resistance value. The BFC should be eco friendly it should not contain envernmently hazardous material/metal having ROHS certification from NABL accredited lab.The earth pit should be provided with a FRP earth pit cover for protection and safe guard of terminals. The material of earth electrode should have good electrical conductivity & anti corrosion property in wide range of soil conditions. The job also include M & L for in PCC(1:3:6) type C-1 around the FRP cover for support and foundation and colouring the PCC work with desired colourcomplete all as specified and directed. Make : ASHLOK ( Model ASEEL-39 AC 3 mtr length 76.3 mm dia Note :- (i) Design of earth electrode should be of pipein-pipe technology . (ii) Contractor have to submit literature of earth electrode and get the make approved of GE before procurement.(iii) The earth electrode shall be CPRI tested to withstand short current test for 60kA rms for 1.0 second and 150kA for peak current. (iv) Contractor has to fill/ pure back fill compound 300 mm all around the earth electrode up to full depth of pit.(v) Copper strip will be laid below 20 cm from ground level and connecting the test point through plinth protection using HDPE pipe for protection, necessary cost of repair to plinth protection and brazing and welding deemed to be included in the item. (vi) Contarctor shall submit the test report of earthing after satisfactorily completion. (vii) Cost includes disposal of excavated soil from site and clear the site before completion of work at that location.(viii) Contractor has to bring agriculture soil from outside defence land and refill the earth pit. Cost of soil is deemed to be included in the item rate

M & L point wiring for for 3 pin 5 amp switch socket combination on independent board point with 1.5 Sqmm single core, multi stranded copper conductor 1100 V grade, ISI marked , PVC insulated unsheathed cable (with approved colour code) FRLSH cable drawn in & including PVC casing caping of 25 mm wide, with double locking type, ISI marked including all accessories casing caping as approved by EIC, with PVC 1.5 mm multi stranded insulated unsheathed FRLSH copper wire, ISI marked of green colour for continous earth, including sunken box made out of 1.20 mm thick and not less than 60 mm in depth GI/MS/ pressed steel terminal box to be concealed in wall, duly painted with two coated of aluminium paint on internal surface and two coat of anti corrosive paint over external surface, including laminated hylum sheet cover, ISI marked of Make" Hylam" for mounting of fittings like switches, sockets, fan regulators etc. fixed with galvanised/ brass screw and cup washer complete all as specified and directed. Note : (i) Circuit wire from DB to switch board is included in unit rate of point wiring. (ii) Distance of point from switch baord up to 15 mtr to be considred as one point. (iii) Wiring to be done with FRLSH wire single core, mutistranded copper conductor and as per approved colour code in IE rule.

All as per item No. 35 here-in-before but for 3 pin socket outlet, 5 Amp on the same board with other switches, complete all as specified and directed.

S&F Switch socket combination 2 in 1, flush type 5/6 Amps complete all as specified and directed : Make : Anchor / L& T/ Havells

S&F DB Box, in sheet metal enclosure VT DB TPN, MCB DB TPN 4 way, double door, with MCB as incomer, enclosure made up of CRCA sheet steel, RAL 9003 powder coated, IP 54, IK 09, As Per IEC 61439-3, with 100 Amp copper bus bar for each phase, with 2 Neutralbar, 2 Earth bar and cable ties for cable management, with fully insulated busbar and shrouded neutral bar, reversible door provision, with colour coded interconnecting wire set, with provision for FP MCB as incomer and SP/TP MCB`s as out going, including flushing and fixing DB box in neaty in wall complete all as specified and directed by Engr-in-charge. : Make- Legrand Cat Part No. 507725 or equivalent in Seimens/ Schinder. Note : (i) MCB and DB box shall be of same make.

S & F MCB SP 6-32 Amp , AC , 220 Volt , 10 kA , C-curve , ISI marked, as per IEC 60898-1 2002 complete all as specified & directed.

S & F MCB, 4 Pole, 40-63 Amp , AC , 415 Volt , 10 kA , C-curve , ISI marked, as per IEC 60898-1 2002 complete all as specified & directed.

M&L for Sub main wiring with four single core PVC insulated unsheathed cable 1100 volts grade, 6 Sqmm size with multistranded copper conductor, FRLSH cable drawn in but including PVC casing capping not less than 32 mm ISI marked including all accessories of casing caping as approved by EIC including two run of PVC insulated unsheathed 6.0 Sqmm cable with multistranded copper conductor green PVC insulated as contineous earth conductor cable connected to earth dolly complete ( 4 x 6.0 sqmm + 2 x 6.0 Sqmm earth wire) . Make of wire : L&T / Polycab/ Havells

M & L for flameproof point wiring, surface with necessary fixing arrangements with stranded PVC-FRLSH insulated and unsheathed copper stranded conductor of size 1.5 Sqmm, 1100 volts grade drawn in and including 16 gauge stove enameled ERW rigid steel conduit (metallic) not less than 19 mm dia with all MS conduit accessories/ fittings such as junction boxes, bends, tee, elbow etc including PVC-FRLSH insulated and unsheathed copper stranded conductor of size 1.5 Sqmm, 1100 volts grade for continuous earthing all as specified and directed by Engineer-in-Charge for one light, fan point controlled by one switch Note : Junction boxes shall be deemed to be included in unit rate of point wiring.

S & F Brass Copper lightening arrester 9.2 mm diameter and 915 mm in length with 5 spikes and base plate 8.5 x 8.5 cm for building protection coverage of 45 degress from the top point 1.85 m all as specified and directed by Engineer in Charge.

S&F PVC insulated, Single core,sheathed armoured copper conductor cable, 1100 Volt, Conf to IS 694, ISI marked of size 70 Sqmm including copper lugs, brass nut and bolt with washer of suitable size as per site requirement to connect the cable complete all as specified and directed by Engineer in Charge. Make : Havells / Polycab/ Finolex.

M & L for XLPE insulated, PVC sheathed, armoured, heavy duty electric under ground cable, with stranded aluminium conductor, 1100 Volts grade of size 10 sqmm 2 core laid in trenches /floor or fixed on wall/pole including brass compression cable glands, terminal lugs etc, complete all as specified and as directed.

S&F flame proof weather proof threaded type junction box LM 6 aluminium alloy 2 way complete all as specified and as directed.

Supply and fixing copper strip of size 50 x 6 mm as earth continuity conductor or main earthing lead fixed on "V" type porcelain insulators ( ceramic bus bar support insulator off white colour of min size of min size of 50 mm width x 70 mm length with 50 mm width bus bar mounting base) saddle to wall, buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required including copper strip brazing to each joints and connected with by providing brass nut boltsand washers all as specified and directed by Engr in Charge

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