REPAIR AND MAINTENANCE OF UNSERVICEABLE EARTHINGS, LIGHTNING PROTECTION SYSTEM WITH MISC CONNECTED ITEMS OF EM INSTALLATIONS AT AF STN PUNE UNDER GE AF LOHEGAON

Amount

M & L for Checking/ Testing of resistance value of any type of earth pits by disconnecting earth continuity conductor from test terminal block and reconnecting the earth continuity conductor after testing. Note: (i) Temporary earthing connection to be provided while testing. (ii) Earth tester will be provided by MES/ User Section . (iii) Contractor has to prepare sketch of earthings indicating the locations in surrounding E&M installations and and give earthing No. (iv) Earth test results shall be recorded in reference to sketch. (v) If earth test result is not satisfactory , earthing test will be carried out again after maintenance and this will be paid separately. (vi) Earth test to be signed by Rep of contractor, Rep of user section and rep of MES , Test reports to be submitted in triplicate.

M&L for maintenance of GI Plate/copper plate earthing to improve the earth resistance as following:- (a) Remove the earth pit carefully and kept at site for reuse. If existing pit is already damaged then new pit will be provided, measured & paid separately. (b) Excavation in any type of soil and rock 0.5 cum (approx 0.75m x 0.75m x 0.9m depth ) (c) On First day recharge the earth pit with common salt, Magnisium sulphate,back fill compound mixed with water.(Approx salt- 10 kg, Mg sulphate- 10 kg, Charkol - 10 kg ) (d) On the next day recharge the earth pit with water 500 ltrs on next day. (e) Excavated material to be removed from the site and deposit at the distance not exceeding 50m distance and levelled. (f) Refill the pit with M&L for black cotton soil 0.5cum. (g) Refit the earth pit in place. (h) Testing of earth ( to be measured and paid separately) Note:-(i) Common salt, Mg sulphate, Charkol will be measured and paid separately. .

M&L for maintenance of GI plate earthing to improve the earth resistance as following:- (a) Remove the earth chamber carefully and kept at site for reuse. If existing chamber is already damaged then new chamber will be provided, new chamber will be measured & paid separately. (b) Excavation in any type of soil and rock 1 Cum (approx 0.75m x 0.75m x 2 m depth ) (c) Taking out GI Earth plate , watering pipe , funnel , earth continuty GI strip, cleaning of GI earth plate and GI strip with wire brush and polish paper , cleaning of GI pipe and funnel and renistall the the same (d) GI strip shall be fitted with GI plate by GI nutbolts - 3 nos and in addition welding to be caried out , weld length between GI plate and GI strip not less than 30 CM on both side of strip (e) On First day recharge the earth pit with charcoal ,common salt, back fill compound mixed with water and black cotton soil (Approx charcoal - 25 KG, salt- 25 kg, Magnisium sulphate - 25 kg , black cotton soil 0.5 Cum (f) On the next day recharge the earth pit with water 500 ltrs on next day. (g) Excavated material to be removed from the site and deposit at the distance not exceeding 50m distance and levelled (h) Refill the pit with M&L for black cotton soil 0.5cum. (j) Refit the earth chamber in place. (k) Testing of earth ( to be measured and paid separately) Note:- charcoal , Common salt, Magnasium salphate will be measured and paid separately. .

M&L for maintenance of copper plate earthing to improve the earth resistance as following:- (a) Remove the earth chamber carefully and kept at site for reuse. If existing chamber is already damaged then new chmber will be provided,new chamber will be measured & paid separately. (b) Excavation in any type of soil and rock 1 Cum (approx 0.75m x 0.75m x 2 m depth ) (c) Taking out Copper Earth plate , watering pipe , funnel , earth continuty copper strip, cleaning of copper earth plate and Copper strip with wire brush and polish paper , cleaning of GI pipe and funnel and renistall the the same (d) copper strip shall be fitted with copper plate by brass nutbolts - 3 nos and in addition brazing to be caried out , brazing length between copper plate and copper strip not less than 30 CM on both side of strip (e) On First day recharge the earth pit with charcoal ,common salt, back fill compound mixed with water and black cotton soil (Approx charcoal - 25 KG, salt- 25 kg, Magnasium sulphate - 25 kg , black cotton soil 0.5 Cum (f) On the next day recharge the earth pit with water 500 ltrs on next day. (g) Excavated material to be removed from the site and deposited at the distance not exceeding 50m distance and levelled . (h) Refill the pit with M&L for black cotton soil 0.5cum. (j) Refit the earth chamber in place. (k) Testing of earth ( to be measured and paid separately) Note:- charcoal , Common salt, Magnesium sulphate will be measured and paid separately. .

M&L for fixing earth indicators made out of 3 mm thick MS sheet of size 200 mm x 300 mm duly fixed in MS angle iron 25 mm x 25mm of 600 mm long fixed to ground by means and including necessary cement concrete foundation and painting with one coat of synthetic enamel paint over a coat of red oxide primer complete for writing earth reading and connected plant/ panel etc. and excavation and earth work complete all as specified and as directed.

S&F in repair of test point made out of gun metal or phosphorous bronze of size 75x50x5mm duly mounted on epoxy insulator 02 Nos.Drilling of upper & lower portion of test point for incoming & outgoing connections with brass nut bolt to be fitted in and including terminal blockmade out of M.S sheet 2mm thick as per the sample duly painted with two coat of enamel paint over a coat of red oxide primer.

Material and labour for supply, installation, testing and commissioning of copper pipe electrode earthing maintenance free earthing based on 6 mtr long copper pipe 76 mm dia(ID) with wall thickness of 2 mm, copper strip in pipe and filled with MFC for improvement of conductivity of electrode duly fixed with connector at top connection of copper strip 32X6 mm riveted /nut bolt after 12 mm boring and further earth continuity conductor made of copper strip 32x6 mm upto 7.5 meter , 120 KGS BFC shall be filled around the copper pipe elecrode ,including providing earth pit chamber size 450x450x300 mm depth outside & 250x250x300 mm depth of PCC (1:3:6) type C1 complete all as specified and directed by Engr-in-Charge. Note:- (i) Rate included for testing,commisioning including checking of earth continuity and earth result complete all as specified and directed. (ii) Vendors are bound to get earthing result less than1 Ohm with grid of three earthings and 2 Ohm with grid of two earthing, 3 ohm with single earthing, Any additional work and material required to achive the required result is included in the cost (iii) Earth strip beyond 7.5m shall be measured and paid separately. (iv) Rate is included for boring of earthing in any type of soil/rock,minimum dia of bore 150mm. (v) Continuity of good earth resistance shall maintained upto 1 year and testing will be carried out monthly by MES authority. Make of Earthing electrode and BFC. (a) KP TRODES sangli or equivalent with prior approval of Accepting Officer.

Material and labour for supply, installation, testing and commissioning of GI pipe electrode earthing maintenance free earthing based on 6 mtr long GI pipe 76 mm dia(ID) medium grade, GI strip in pipe and filled with MFC for improvement of conductivity of electrode duly fixed with connector at top connection of GI strip 32X6 mm riveted /nut bolt after 12 mm boring and further earth continuity conductor made of GI strip 32x6 mm upto 7.5 meter , 60 KGS BFC shall be filled around the GI pipe electrode including providing earth pit chamber size 450x450x300 mm depth outside & 250x250x300 mm depth of PCC (1:3:6) type C1 complete all as specified and directed by Engr-in-Charge. Note:- (i) Rate included for testing,commisioning including checking of earth continuity and earth result complete all as specified and directed. (i) Venders are bound to get earthing result upto 5 Ohm for single earthings and 3 Ohm with the grid of two earthing.Any additional work and material required to achive the required result is included in the cost quoted by the tenderer. (iii) Earth strip beyond 7.5m shall be measured and paid separately. (iv) Rate is included for boring of earthing in any type of soil/rock,minimum dia of bore 150mm. (v) Continuity of good earth resistance shall maintained upto 1 year and testing will be carried out monthly by MES authority. Make of Earthing electrode and BFC. (a) KP TRODES sangli or equivalent with prior approval of accepting officer.

M/L for providing earthing complete with 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 Mtr deep below ground level with top edge of the plate not less than 1.5 Mtr below normal ground level connected to copper earth strip 20 x 3 mm by means of bolts, nuts, checknuts & washers of copper and connecting to test point , providing charcoal and common salt ,all as shown in electrical plate No. 5 of SSR Part I of 2009 & as specified or indicated and testing on completion including excavation/earth work 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 B1 (reinforced with welded steel wire fabric (XPM) weight not less than 4 Kg / Sqm), funnel with wire mesh, watering pipe of 20 mm bore medium grade and lugs, including copper earth strip 20 x 3 mm with GI protection pipe of 25 mm medium grade 7.5 meter long, etc complete all as specified. Note-- (i) Vendors are bound to get earthing result upto1 Ohm with grid of three earthings and 2 Ohm with grid of two earthing, 3 ohm with single earthing, Any additional work and material required to achive the required result is included in the cost. (ii) Excavated material to be removed from the site and deposit at the distance not exceeding 50m distance and levelled. (iii) Refill the pit with M&L for black cotton soil 1 cum.

M&L for providing earthing complete with galvanised iron earth plate electrode 600 mm x 600 mm x 6mm as earthing lead buried directly in ground vertically to a depth 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 connected to and including galvanised iron strip 32x6 mm as earthing lead by means of bolts, nuts, check nuts & washers etc made of GI and connected to earthing test point, providing charcoal and common salt all as shown in electrical plate No. 5 of SSR Part I of 2009 & as specified or indicated and testing on completion including exaction/earth work 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 B1 (reinforced with welded steel wire fabric (XPM) weight not less than 4 Kg/sqm), funnel with wire mesh, watering pipe of 20 mm bore medium grade and lugs, including galvanised iron strip 32x6 mm with GI protection pipe of 40 mm medium grade 7.5 meter long, etc complete all as specified. Note:- (i) Venders are bound to get earthing result upto 5 Ohm for single earthings and 3 Ohm with the grid of two earthing.Any additional work and material required to achive the required result is included in the cost quoted by the tenderer.(ii) Excavated material to be removed from the site and deposit at the distance not exceeding 50m distance and levelled. (iii) Refill the pit with M&L for black cotton soil 1 cum.

S & F GI earth continuity conductor or main earthing lead of size 32x6 mm fixed to wall on batten or recess or chases or buried in ground or drawn in conduit / pipe or fixed to poles or any other indicated situation for earthing etc. as required complete all as directed.

S & F GI earth continuity conductor or main earthing lead of size 25x4 mm fixed to wall on batten or recess or chases or buried in ground or drawn in conduit / pipe or fixed to poles or any other indicated situation for earthing etc. as required complete all as directed.

S & F copper earth continuity conductor or main earthing lead of size 25x3 mm fixed to wall on batten or recess or chases or buried in ground or drawn in conduit / pipe or fixed to poles or any other indicated situation for earthing etc. as required complete all as directed.

S & F copper earth continuity conductor or main earthing lead of size 20x3 mm fixed to wall on batten or recess or chases or buried in ground or drawn in conduit / pipe or fixed to poles or any other indicated situation for earthing etc. as required complete all as directed.

S & F GI wire 4mm dia fixed to wall on batten or recess or chases or buried in ground or drawn in conduit / pipe or fixed to poles or any other indicated situation for earthing etc. as required complete all as directed.

S&F in repair of PVC insulated single core unsheathed multistranded cable FR, green colour with copper conductor size 6 sqmm for voltage grade upto 1100 volts.

S&F in repair of PVC insulated single core unsheathed multistranded cable FR, green colour with copper conductor size 10 sqmm for voltage grade upto 1100 volts.

S&F rigid PVC conduit of 20mm size along with all accessories as required complete all as directed.

S&F in repair for 25 mm bore galvanised steel water tubing 'medium grade' complete all as specified and as directed ( verticle pipe in earth pit for fiiling of water.)

S&F GI Sheet funnel with wire mesh

S&F in repair of GI tubing 20 mm bore 'medium grade' including all necessaory fittings i.e. socket, elbow etc.laid on floor or fixed to wall complete all as specified and directed by Engr-in-charge.

S&F in repair of GI tubing 15 mm bore 'medium grade' including all necessaory fittings i.e. socket, elbow etc.laid in trenches complete all as specified and directed by Engr-in-charge.

S&F Stop valve of 15mm dia complete as directed.

S&F GI elbow & GI plug 15mm dia with 1 mm hole for watering to each pit complete as directed. Note - above four items are for watering arrangment to earthings.

Excavation in trenches not exc 1.5 m wide and not exc 1.5 m in depth and getting it out for laying of cable / pole etc. (a) Soft/loose soil

(b) Hard/dense soil

(c) Soft/ disintegrated

Returning/ Refilling of excavated soil including spreading levelling and well ramming in layers for any type of soil.

Removing the surplus soil to a distance not exceeding 50 mtrs from the starting point and depositing at a height not exceeding 1.5 m above ground level.

M&L for Cutting the existing GI pipe upto 80mm for tapping of 25 to 15 mm branch including required fittings complete all as specified and as directed.

S&F epoxy insulators suitable of aluminium strip of 25x3mm size with nut bolts/ screws for fixing of copper/ aluminium / GI strips on stone / PCC block walls etc .

M&L for earthing chamber of size 450x450x300 mm depth outside & 250x250x300 mm depth of PCC (1:3:6) type C1 complete as specified and directed by Engr-in-Charge .

S&F in repair of earthing pit cover 50 mm thick precast slab of RCC 1:2:4 type B1, reinforced with welded steel wire fabric (XPM) weight not less than 4 Kg/sqm incl 6 mm dia bar handle complete all as specified and directed by Engineer-in-charge.

Supply only Common salt for earthing complete all as specified and directed

Supply only charcoal for earthing complete all as specified and directed

Supply only magnasium sulphate for earthing complete all as specified and directed

Taking down carefully from roof / wall of the building loose / hanging / deshaped / GI strip/ aluminium strip / copper strips of any size & type including unserviceable insulators etc all as directed by Engr - in - Charge .

Taking down termination rod complete all as specified and directed

Supply & fix aluminium strips 25x3 mm on porceline insulator 'T' type not more than 50 cm apart all as directed by Engr - in - Charge . Note: M&L Porcelain insulators with nuts bolts and screws will measured and paid separately

Refixing serviceable aluminium strips of any size and fixing on porecelin insulators 'T' type placed not more than 50 cm apart & fixed with srews & nut bolts . Note : M&L Porcelain insulators with nuts bolts and screws will measured and paid separately

Supply and fix air termination single pointed aluminium 12 mm dia & 300 mm long including nuts & bolts for fixing air termination rod to pole/ pipe duly insulated by providing appropriate insulator all as required at site.

Refixing air termination rod complete all as specified and directed by Engr-in-charge.

Refixing of GI supporting pipe 40/50mm (for termination rod) complete all as specified and directed by Engr-in-charge.

M&L for PCC 1:4:8 type D2 using 40 mm graded stone aggregate as mass concrete for foundation of GI tubing /Air termination rod or as required on site on Electrical installation complete all as specified and directed by Engr-in-charge.

M&L for cement concrete (1:2:4) type B1 in foundation filling and mass concrete and coping of poles incl necessary form work using 20 mm graded stone aggregate etc or as required on site etc complete all as directed by Eng-in-Charge

S&F porcelian insulators with nut bolts / screws for fixing of copper / aluminium strips / GI strips on walls etc .

Refixing of porcelian insulators with nut bolts / screws for fixing of copper / aluminium strips / GI strips on walls etc .

S&F GI pipe medium grade 40 mm dia embeded in concrete all as specified and directed by Engr-in-charge (mounting arrangment for air termination) Note: M&L for PCC work will be measured and paid separately.

M & L tools and machinary required for brazing of copper strip 20/25 mm wide x 3 thick both side by using copper brazing electrode to connecting the strip joints incl taking out/findingout joints below grond and required earth work complete all as required on site and all as directed by engr-in-Charge

All as above item ser No 47 but above ground level

M & L tools and machinary required for brazing of copper strip 32 mm wide x 3 mm thick by using copper brazing electrode to connecting the strip joints incl taking out/findingout joints below grond and required earth work complete all as required on site and all as directed by engr-in-Charge

All as above item ser No 49 but above ground level

M & L tools and machinary required for welding of GI Strip any size by using GI welding electrode to connecting the strip joints incl taking out/findingout joints below grond and required earth work complete all as required on site and all as directed by engr-in-Charge

All as above item ser No 51 but above ground level

Repair to unsv spike barrier 6 meter long, including servicing/ greasing, alignment of barrier shaft with spikes, motor servicing/ greasing (Removaval and refixing at site), repair/ replacement of worn parts, checking electrical connections and testing complete in all respect for smooth functioning of spike barrier etc complete and maintain user satisfaction record all as specified and directed by Engr-In-Charge. Note: Cost of T&P and Spare parts is included in quoted rates.

Repair to unsv spike barrier6 meter long, including servicing/ greasing, motor servicing/ greasing (Removaval and refixing at site), repair/ replacement of worn parts checking electrical connectionsand testing complete in all respect for smooth functioning of spike barrier etc complete and maintain user satisfaction record all as specified and directed by Engr-In-Charge. Note: Cost of T&P and Spare parts is included in quoted rates.

Comprehensive/ preventive maintanance of spike barrier 6 meter long, on quarterly basis including servicing and greasing all components, repair/ replacement of worn parts checking all electrical connections and testing complete in all respect for smooth functioning of spike barrier etc complete and maintain user satisfaction record all as specified and directed by Engr-In-Charge. Note: Cost of T&P and Spare parts is included in quoted rates.

Supply and laying in trench/ on wall/ along pole/pipe etc in replacement of Copper control cable 12 core 2.5 sqmm stranded armoured suitable for 650/1100V grade XLPE insulated, PVC inter sheathed including necessary thimbling and tagging of each core of cable at both ends as per site requiment and necessary connections carefully as existing system of 22/11 KV power transformer and VCBs and other connected equipments and testing complete for smooth functioning as required at site and as directed by Engineer in charge complete. Note: Nacessary T&P and electric testing instruments to be arranged by contractor.

Suuply and fixing in replacement of 22 KV metal oxide Gapless Surge/Lightning arrestor station/ Switchyard Type suitable for switch yard pedastal type conforming to IEC 60099-4 and IS 3070 Part 3 , outdoor type, single column single phase, with current rating 65 KA peak, class 2 complete all as specified and directed by Engr-In-Charge.

Supply and fix Rotational moulded water storage tank ( cylinderical / vertical/ or flat type with closed top) hoisted and fixed in position with all connection such as in let,out let,air vent pipe overflow etc all as specified and directed of cap 500 ltr complete all as specified and directed by Engineer-in-charge.

Supply and fixing framed work such as grills, gratings,chequered plate etc with ends of bars shouldered and or riveted or forged into spikes, framed guard bars, barred iron doors, ladders, framed balusters, wzalk ways, railings, frame work of water tanks and similar work conforming to Fe.290.Gde-E-165PVC.

M & L for Painting and marking of Earth pit chambers and Earth test points as per direction of user section as required on site complete as directed by Engr-in-Charrge

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