REPAIR/REPLACEMENT OF LT OH LINES,TWO/FOUR POLE STRUCTURES ,REPLACEMENT OF MCCB/MAIN SWITCHES, LT PANEL BOARD AND OTHER MISCELLANEOUS E/M WORKS IN TECHNICAL AREAS AND VARIOUS SUB STATION INSIDE CAMP AT AF STATION TAMBARAM

Amount

Excavation in trenches not exceeding 1.5 metre deep and not exceeding 1.5 metre wide and getting out in hard/dense soil for laying cable, foundation for pole etc complete

All as per item No. 1 here-in-before but depth exceeding 1.5 metre and not exceeding 3.0 metre deep.

Returning filling in soil including leveling watering and well ramming in layers not exceeding 25cm thick all as directed.

Removing of surplus soil to a distance not exceeding 50 metre and depositing where directed at a level not exceeding 1.5 metre above the starting point.

M&L for sand filling in trenches above and below the cable as in cable protection. NOTE:- Punned thickness shall be measured and paid.

M & L for brick protection to cable using old size sub class 'B' bricks, laid flat, dry butt jointed, laid lengthwise perpendicular to the axis of cable all as specified & directed.

Relaying of old serviceable bricks of any size removed from old cable trenches laid across trenches for cable protection.

M&L for plain cement concrete 1:4:8, type D2, using 40 mm graded stone aggregate for foundation, filling and mass concrete all as specified and as directed

M&L for plain cement concrete 1:3:6, type C1, using 20 mm graded stone aggregate as in foundation/ coping of poles including necessary form work and finishing the exposed concrete surfaces even and fair all as specified and as directed

M&L for Straight through joints suitable for 3.5/4 core PVC insulated and PVC sheathed armoured LT underground cable with aluminium conductors including joint kits complete for making joints all as specified and as directed for the following : - Make :- Raychems / Densons / M-Seal /Birla-3M / CCI / Siemen

3.5/4 core cable 25 to 50 Sq mm.

3.5/4 core cable 70-120 Sq mm

3.5/4 core cable 150-185 Sq mm

3.5/4 core cable 240-300 Sq mm

M&L for End termination indoor/out door heat shrinkable joint kits suitable for 3.5/4 core PVC insulated and PVC sheathed armoured LT underground cable with aluminium conductors including joint kits complete for making joints all as specified and as directed for the following : - Make :- Raychems / Densons / M-Seal /Birla-3M / CCI / Siemen

3.5/4 core cable 25 to 50 Sq mm.

3.5/4 core cable 70-120 Sq mm

3.5/4 core cable 150-185 Sq mm

3.5/4 core cable 240-300 Sq mm

M&L for Sepatating pick and stacking stone aggregate spread in the installation yard of transformer/two/four pole structure aside for re use cleaning surface free from vegetation, grass etc.., all as directed by Engineer -in-Charge.

Supply and spread 20/40mm graded stone aggregate as approved quality for installation yard all as directed.

M&L for cutting, removing the vegetation growth and surface dressing all around the installation yard including 4/2 pole structure area to keep the installation area (external only) clean and tidy. Note :- All the sub station yards shall be kept clean through out the contract period by repeatedly removing the grass/ however weeds as and when ordered by Engineer-in-charge depending on the growth of the grass, however this item shall be measured and paid only once during entire contract period.

M&L for cutting chases on concrete surfaces for concealed GI tubing/HDPE pipe, girth exceeding 10 cm but not exceeding 20 cm ,making good to facing and disturbed surface in cement morter 1:3 and finished as per existing all as directed.

Taking out the existing LT UG cable of any description of following size to find out the fault and re-laying the serviceable LT UG cable 1100 Volts grade PVC insulated PVC sheathed amoured, heavy duty, in trenches/walls/poles/passing through pipes with multistranded aluminium conductor including necessary lugs/thimble/ferules connection, testing and commissioning complete all as specified. Note: [a] Earth work, excavation sand cusioning, bricks for protection, GI pipe, LT UG Cable Joints etc shall be measured separately under relevant items of this schedule . [b] Defective portion of cable shall be removed, serviceable cable shall be re-laid and balance with new LT U/G cable .(C) New LT UG cable shall be measured and paid as Supply only LT UG cable under schedule /BOQ item No 17 of this schedule.

10 sqmm to 16 sqmm 2/4 core

25 sqmm to 35 sqmm 3.5 core

50 sqmm to 120 sqmm 3.50 core

150 sqmm to 240 sqmm 3.50 core

Supply only LT UG cable 1100 Volts grade XLPE insulated PVC sheathed amoured, heavy duty, in trenches/walls/poles/passing through pipes with multistranded aluminium conductor including lugs/thimble/ferules connection, testing and commissioning complete for the following sizes.

10 sqmm 2 core

16 sqmm 2 core

25 sqmm 3.5 core

50 sqmm 3.50 core

70 sqmm 3.50 core

95 sqmm 3.50 core

120 sqmm 3.5 core

150 sqmm 3.50 core

185 sqmm 3.50 core

240 sqmm 3.50 core

M&L for GI tubing 'Light' grade with all fittings for cable protection fixed on poles/walls/laid under roads crossing etc and made good the disturbed surfaces/area for following sizes of pipes :-

For 40 mm Bore

For 50 mm Bore

For 80 mm bore

For 100 mm bore

M&L for MCCB 4 pole, 415 volts fixed overload & fixed short circuit setting including disconnecting the incoming/outgoing cable connections and re-connecting with suitable aluminum lugs/ferruls etc. including taking out the existing unserviceable MCCB and making good the disturbed surface for following capacity. Make : L&T, Indo-Asian, Bajaj, Legrand, Siemens, GE-Lighting

160 Amps with breaking capacity 25 KA

200 Amps with breaking capacity 35 KA

250 Amps with breaking capacity 35 KA

320 Amps with breaking capacity 35 KA

400 Amps with breaking capacity 35 KA

100 Amps with breaking capacity 25 KA

125 Amps with breaking capacity 25 KA

63 Amps with breaking capacity 25 KA

M&L for painting the existing steel tubular LT poles, 9m long including cross arms, channels, angle iron support, bracings, clamps etc. with two coats of aluminum paint superior quality of approved make on surfaces exposed to view and making 30cm wide strips (Total 5 Nos) with white and black paint alternately on external surface above PCC benching including preparation of old painted surfaces by scraping etc complete all as specified & directed.

M&L for Steel tubular swaged poles complete with base plate 8mm thick welded with pole, finial taper plug, bolt, nut and screws as specified type 410 SP-31 (9m long) including one coat of red-oxide zinc chrome primer and two coats of aluminium paint on surfaces exposed to view and making 30cm wide strips (total 5 Nos) with white and black paint alternately on external surface above PCC benching including numbering with black paint and painting with bituminous paint internally complete and externally for portion embedded in PCC including dismantling of old type of poles any length , complete all as specified and directed. Note : Excavation & earth work and PCC shall be measrued and paid separately under relevant item. Make : India Tube and Co, Kalinga tubes, The National tubing company, India Electric Poles Mfg Co

M&L for cutting, trimming and prunning of trees/tree branches of any girth upto 4m all around existing LT/HT over head lines including cleaning the disturbed area beneath the LT/HT overhead lines and removing the tree/ tree branches and debris from at site and depositing where directed at site. Note: (a) This item shall be measured and paid only once during entire contract period , however each span of LT over head line shall be clear from tree branch growth through out the contract period seperately. (b) Cutting trimming, prunning of tree / branches shall be carried out as and when ordered by Engineer-in-chrage depending on growth of tree (c) Approximate span between poles shall be 45m to 60m.

Taking down old serviceable conductors any description and re-stringing/ tightening of ACSR conductor (size- squirrel/ weasel/ ferret) / GI earth continuity conductor/ cradle up to the permissible sag limit between any span length and binding the with new binding wire of the same materiel to insulators all as specified and as directed. Note :Approximate span between poles shall be 45m to 60m.

Dismantling old and unserviceable ACSR conductor of any size / including disconnecting from the poles and depositing where directed.

Supply & fixing ACSR conductor of any size including binding on existing LT/ HT poles or new poles with 2mm dia aluminium binding wire including jumper all as specified & directed by the Engineer-in-charge Make of ACSR : ICC/ NICCO/ BHARAT CONDUCTORS / Indian Aluminium Co.

Supply, fabricating and fixing mild steel cross arms (any type) supports, bracing stiffner etc made out of MS channel, angle iron , flat iron of any size including drilling of holes, making clamps, eye hooks, nuts, bolts and washers etc, welding if required including painting with two coats of aluminium paint over a coat of red oxide paint and taking down the existing all as directed by Engineer-in-charge.

Supply and fix Galvanised steel wire, 4mm dia, as in earth continuity conductors/ guarding cradles for LT OH line including taking out old unserviceable and making good the disturbed surfaces all as specified and directed.

Supply and fix, shackle type porcelain vitreous white, green or brown insulators for working pressure 1100 volts, 90mm dia 75mm height including removal of existing insulators. Make :- MYSORE/ BHEL/ PORCELAIN / JAIPURIA BROS / Jayshree / WS Insulators

M&L for stay assembly complete with all accessories as shown in Electrical plate No. 1 of SSR Part-I all as specified and as directed including GI stay rod 20 mm dia 2150 mm long, MS stay plate of size 300 x 300 mm, 6mm thick GI stay bow including necessary bolts & nuts etc complete. Note : Excavation, foundation concrete, stay wire, clamps and loop insulator shall be measured and paid separately.

M&L for galvanised stay strand 7/ 3.15mm all as specified

M&L for pin type insulator, porcelain, vitreous, white, brown or green insulator of size 100 mm height, 65 mm dia for 1100 volts grade, including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron bolt including taking out the old unserviceable insulator and making good the all as specified and as directed. Make :- MYSORE/ BHEL/ PORCELAIN / JAIPURIA BROS / Jayshree / WS Insulators

M&L for M&L for loop type insulator, porcelain vitreous white or brown, with overall dimensions of 65mm x 90mm, clearance of hole 16mm all as specified and as directed including taking out old unserviceable insulator. Make :- MYSORE/ BHEL/ PORCELAIN / JAIPURIA BROS / Jayshree / WS Insulators

M&L for removing old/burnt out jumper connection in binding with HT/LT lines from position including re-binding the same with new binding wire of size 3.25mm aluminium wire all directed by Engineer- in- charge

Material and labour for earthing complete with GI plate electrode 600x600x6mm thick, buried directly in ground (earth pit not less than 2.25m deep below ground level) with top edge of plate not less than 1.5m below ground level connected to earth lead of 32mm x6 mm GI strip means of bolts, nuts, washers of galvanized all as shown in electrical plate No.3 of SSR Part-I including necessary excavation and earth work. PCC 1:3:6 type C1 chamber, RCC cover, 50mm thick in cement concrete 1:2:4 type B1 with 6mm CTD 140mm centre to centre with suitable handle, watering pipe 20mm dia light grade pipe with funnel, charcoal salt, GI pipe 40mm dia for protest GI strip connected to earthing test point all as specified including testing and commissioning on completion

M&L for earthing for pole complete with galvanized steel earth plate electrode 600X600X6mm thick buried directly in ground (earth pit not less than 2.25m deep below normal ground level) with top edge of the plate not less than 1.5M below normal ground level connected to GI earth lead wire 4.0 mm dia by means of nuts, bolts, check nuts and washer of GI steel and connecting to testing point including provision of test point and all as shown in electrical plate No. 5 of SSR Pt I (2009). The quoted rate shall be inclusive of necessary earth work and PCC chamber with cement concrete 1:3:6 type C1 complete all as specified and directed Note:- The rate shall deemed to be inclusive of the cost of earth work, excavation on any type soil and removal of surplus soil to a distance of 50 Mtrs, RCC 1:2:4 type B1 earth pit cover including 6 Nos of 6 mm dia CTD bar on both direction, earth lead protection GI pipe medium grade with suitable size from earth plate electrode to main switch board complete.

Supply and fix off load change over switch with enclosure execution rated voltage 415V AC 50 HZ type TPN all as specified and directed by the Engineer-in-charge including taking down existing main switches for following capacity Make : Havells, Siemens, Larsen & Turbo, Control & Switch gear, Crompton Greaves

Supply and fix Euroload for pole changeover with advance neutral on load change over switch open execution rated voltage 415V AC 50 HZ type FP 400 Amps all as specified and directed by the Engineer-in-charge including taking down existing main switches Make : Havells, Siemens, Larsen & Turbo, Control & Switch gear, Crompton Greaves

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