REPAIR MAINTAINANCE OF HT EXTERNAL ELECTRIC INSTALLATION AT BORARUPAK I and II AND ALONG MIL STN

Amount

Dismantling / Taking out old existing HT Poles complete all as specified and directed.

Dismantling / Taking out old existing unsv HT Stay Assembly complete all as specified and directed.

Dismantling of HT Insulators of any type from Poles of any size complete all as specified and directed.

Dismantling / Taking out old existing unsv ACSR conductor complete all as specified and directed.

Dismantling / Taking out old existing unsv cross arms complete all as specified and directed.

Disconnecting / Taking out unsv HT UG Cables of any size complete all as specified and directed.

Excavation in trenches not exc 1.5 mtr width and not exc 1.5 mtr in depth and getting out in hard/dense soil for laying of UG cable complete all as specified and directed.

Excavating in trenches, not exceeding 1.5 mtr wide and exceeding 1.5 mtr deep and not exceeding 3 mtr deep for excavation of poles and getting out in any type of soil complete all as specified and directed.

Returning , filling in incl spreading, leveling , watering and well ramming in layers not exc 25 cm thick coplete all as specified and as directed.

Removal of surplus soil/excavated materials to a distance not exc 50 mtr away and depositing where directed as a level not exc 1.5 mtr above the starting point complete all as directed.

M&L for sand cushioning using dry and clean river sand in two layers, first layers of 80 mm thick before laying of cable and second layer of 150 mm thick after laying of cable in trenches/ducts including consolidation upto 180mm thick complete all as specified and directed. Note :- Punned thickness only will be measured and paid.

Supply and laying un-reinforced precast concrete cable cover class HVP, Type 2, flat, size 450 mm x 180mm x 40mm thick, concrete grade grade M-20 minimum, all as specified and as directed.

M&L for ACSR conductor, steel reinforced for LT over head lines on poles including streching tightining of poles insulator with binding wire of suitable size with insulator/streching of ACSR conductor complete all as specified and directed.

M&L of Cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one coat of red oxide primer, one under coat and one finishing coat of synthetic paint complete all as specified and directed.

S&F Pin type, porcelain, vitreous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 150mm height, 150mm dia for 11000 volts grade complete all as specified and as directed.

S&F Disc type insulator, porcelain, vitreous 145mm high and 255mm dia ball and socket type, white, brown or green single disc assembly for tension with tension clamps for conductors, working pressure 11000 volts complete all as specified and as directed.

Supplying, errecting and fixing steel tubular swaged poles with cast iron base plate of size 300mm x 300mm x 6mm, finial taper plug, bolts, nuts & screws for type 410 SP-55 (11.0 metres long) including painting with two coats of aluminium paint over one coat of red oxide primer on all exposed surfaces and tarring with black bituminous paints to embedded portion in PCC and providing 3 Nos of 30cm wide circular bands with black & yellow paint starting from plinth level at a gap of 30 cm in between 2 bands and numbering of poles, in yellow paint over black painted back ground at a height of 2m from bottom of pole with 5 cm large bold letters 2" (inch) wide complete all as specified and directed. (Note :- Excavation, earth work, PCC in foundation and coping shall be measured and paid separately under relevant item of this sch)

Material and labour for PCC 1:4:8 type D2 using 40mm stone aggregate as in foundation and mass concrete complete all as specified and directed.

Material and labour for PCC 1:3:6 type C2 using 40mm stone aggregate as in foundation mass concrete complete all as specified and directed.

Material and labour for PCC 1:2:4 type B1 using 20mm stone aggregate in coping to pole including necessary form work complete all as specified and directed.

S&F ir repair GOD, Triple pole, mechanically operated, mounted on insulator and steel frame, with operating mechanism worked from ground level, for current rating upto 200 amps suitable for 11000 volts (11 KV) complete all as specified and directed.

S&F in repair Expulsion fuse (Drop out fuse) for current rating upto 200 amps suitable for 11000 volts (11 KV) complete all as specified and directed.

S&F in repair Lightning arresters expulsion type complete with all fittings, transmission class, discharge capacity 65 kilo amp suitable for 11000 volts (11 KV) complete all as specified and directed.

S&F HT stay assembly comprising of 7/10 SWG galvanized MS stranded stay wire of required length, minimum tensile strength 70 Kg/mm (grade-2 quality) fixed to pole with and including FI clamps,bolts, nuts, washers, galvanized steel stay rod 16mm dia 180 cm long bow 400 x 14 mm nuts/bolts, washers all galvanized and two nos thimble, loop insulator of size 65 x 90 mm vitreous, clearance dia of hole 16mm, stay plate of size 230 x 230 x 6 mm including necessary excavation and earth work PCC 1:3:6 type C-2 using 40mm graded crushed stone aggregate in foundation and disposal of surplus soil, upto 50 M complete all as specified and shwon in plate No-1 of MES SSR Pt-I, complete all as specified and as directed.

Supply and lay XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 11000 volts (11 KV) Earthed, grade cross sectional area of size 120 Sqmm x 3 Core complete all as specified and directed.

All as per item No-25 here in after but of size 95 Sqmm x 3 Core.

S&F Cable jointing kit for 11 KV (Earthed) grade cable for Straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size up to 95 Sqmm complete all as specified and directed .

S&F Cable jointing kit for 11 KV (Earthed) grade cable for Straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 Sqmm complete all as specified and directed .

S&F Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete all as specified and directed.

S&F Cable jointing kit for 11 KV (Earthed) grade cable for Indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete all as specified and directed.

S&F Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm complete all as specified and directed.

Cutting the existing road straight by manual for insurting 50/80 mm dia pipe, depth not less than 1 Mtr below ground level for passing of underground cable and filling back with excavated soil up to 75 % road portion and balance 25 % shall be filled with plain cement concrete 1:2:4 (using 20 mm graded aggregate stone complete all as specified and directed.

Supply and laying of 80mm dia GI tubing light grade in protection of cable at road crossing /hard standing/pole protection fixed with clamps as per site requirement etc including taking down old unserviceable pipe all as specified and directed

S&F of earth continuity conductor or main earthing lead fixed to wall on battern or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required Copper Strip of 32x6 mm complete including taking down old unserviceable stirp all as specified and directed.

S&F of earth continuity conductor or main earthing lead fixed to wall on battern or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required GI Strip of 32x6 mm complete including taking down old unserviceable stirp all as specified and directed.

S&F Breather assembly Heavy Duty of capacity 0.5 kg with silica gel cristal complete.

S&F Oil tempreture gauge with max temp rise record handle 0 - 150 C (as per sample) including necessary wiring to the sensor and testing complete all as directed.

S&F Copper Bushing HT Side of existing size and rating including all packing materials.

S&F Copper Bushing LT Side of existing size and rating including all packing materials.

S&F Sealed drum transformer oil EHV grade as per IS 335 of 1993 Part II filling/top up of transformer complete all as specified and directed.

S&F On line/off line Dehydration of HV/EHV grade transformer oil minimum three cycles to achieve dielectric strength up to 60KV for EHV grade and upto 40 KV for HV grade all as directed. (Note :- (i) Centrifuging Machine with all T&P & testing eqpt required for dehydration to be arranged by contractor. (ii) Oil required for topping up the transformer will be measured & paid seperately)

Disconnecting HV, LV and earth connections from defective transformers out door/ indoor type, pole mounted/ plinth mounted 11/0.433 KV, capacity ranging from 63 KVA to 200 KVA, lifting the transformer by using hydraullic crane and load the same in a suitable truck to transport to the manufacturer's workshop. Un loading the same by using hydraullic crane, drain out insulating oil complete to take out the core assy, replace the damaged HV/LV leg coils with proper gauge copper wire, re-insulation complete core/windings with proper insulation materials, complete servicing and ovening of transformer as specified, filter the insulation oil minimum three cycles upto 400 Ltrs quantity to receive the proper value of dielectric strength, testing the oil for not less than 40 KV BDV, refilling the same to the transformer, topping up with new transformer oil upto the marked level, re assembling complete accessories including testing of transformer at work shop as specified and directed by Engr in charge. Loading the transformer and transporting back to the substation, installation on the existing foundation/ structure including HV, LV and earthing connections, carry out magnetic test and other specified tests after transportation of the transformer and commissioning in all respect to the satisfaction of Engr in charge. Note :- (i) The copper wire/ copper strip of suitable gauge for rewinding of damaged portion will be measured and paid under respective items of this schedule. (ii) The oil used for topping up of transformer oil and dehydration of existing oil will be measured and paid under respective item of this schedule. (iii) Transportation of transformer if required ( To & From) is deemed to be included)

All as per item No-43 here in before but of capacity ranging from 250 KVA to 400 KVA complete all as specified and directed.

Supply only Copper wire of superior quality of suitable gauge as per sample for rewinding HV/LV damaged coils of transformer all as specified and directed.

Supply and installation CPRI approved LT Electric control panel, cubical type, for outdoor use, double door dust & vermin proof floor mounted made out of CRCA steel sheet of 3.15 mm thick and 2.00 mm thick other parts and angle iron legs of size 50mmx50mmx6mm having front and rear hinged doors with front openable shutters for each MCCB/Change Over with spreader & extended rotary handle having hinges on one side and locating arrangements with screws type on other sides completely with fully enclosed bus bar chamber, having electrolytic high conductivity insulated bas bar made but of aluminium strips of rating 800 amps for 3 phase, 415 volts, 50 C/S 4 wire system, with cable entry provision, with suitable lugs gland, voltmeter, Ammeter and phase indicator complete, duly painted with two coats of stove enameled powder coated paint over as coat of red oxide primer complete all as including necessary PCC work of height 45 cm from the ground level all as specified and directed. INCOMMING : (i) MCCB 4 Pole, 415 V, Adjustable type, 315 Amps with breaking capacity 25 kA - 01 No (ii) Basic Multifunction Meter Cl 0.5 with RS485 - 01 No. (iii) LED Indicator lamp in three colour RYB - 01 Set of 3. OUTGOING : (i) MCCB 4 Pole, 415 V, Adjustable type, 200 Amps with breaking capacity 16 kA - 01 No (ii) MCCB 4 Pole, 415 V, Adjustable type, 160 Amps with breaking capacity 16 kA - 01 No (iii) MCCB 4 Pole, 415 V, Adjustable type, 63 Amps with breaking capacity 16 kA - 02 No

M & L for Earthing complete with copper earth plate electrode 600x600x3.15 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 deep below normal ground level, connected to machinery/equipment etc and incl copper strip 20×3 mm as earthing lead by means of bolts, nuts, check nuts and washers, protected with and incl 50 mm dia light grade GI pipe, 20 mm dia GI pipe (Medium grade) for watering, necessary earth work. PCC 1:3:6 type C1 concrete pit, RCC (1:1.5:3) type A1 pre-cast cover (54X54X5 cm) duly reinforced with and incl 8 mm dia TMT bar @ 150 mm c/c both ways, one lifting handle made of 8 mm dia TMT bar, embedded in pre-cast cover slab all as specified and shown in electrical plate No-3 of SSR Part-I incl testing on completion complete including taking down old unserviceable one all as specified and directed.

M & L for Earthing complete with galvanised mild steel earth plate electrode 600X600X6 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 deep below normal ground level, connected to machinery/equipment etc and incl GI strip 32×6 mm as earthing lead by means of bolts, nuts, check nuts and washers, protected with and incl 50 mm dia light grade GI pipe, 20 mm dia GI pipe (Medium grade) for watering, necessary earth work. PCC 1:3:6 type C1 concrete pit, RCC (1:1.5:3) type A1 pre-cast cover (54X54X5 cm) duly reinforced with and incl 8 mm dia TMT bar @ 150 mm c/c both ways, one lifting handle made of 8 mm dia TMT bar, embedded in pre-cast cover slab all as specified and shown in electrical plate No-3 of SSR Part-I incl testing on completion complete including taking down old unserviceable one all as specified and directed.

Restreching/restraining, tightening and repair to overhead line ACSR conductor of any size on HT poles including necessary Aluminium binding wire connectors PVC sleeves for jumper, fixing of insulators and prunning of tree branches of concerned spans properly at site etc complete all as specified and directed. (Note :- (i) The distance between pole to pole (contains 3 runs of ACSR conductor) will only be considered for payment purpose as one span. (ii) No Extra amount will be paid for binding wire etc. required for binding to insulators / jumpering etc.)

M & L for painting the existing HT Steel Poles 11 m long including cross arms, clamps etc with 2 coats of aluminium paint over a coat of red oxide primer including complete removing of existing paint & throughly cleaning the existing surface, writing of pole numbers in yellow circle 15 cm dia with black paint on poles. Painting the poles up to 1.5 Mtr height with alternate bands 30 cm height (3 Nos black and 2 Nos Yellow) from ground level, complete all as specified and directed.

All as per item No-51 above but HT 2 Pole structure, 11 mtr long.

All as per item No-51 above but 3/4 Pole structure, 11 mtr long.

M/S A D ASSOCIATES (BID ID -3507720)

M/s PRABIR ENTERPRISE (BID ID -3507958)

MANASEE (BID ID -3507545)

M/s Mrinal Dowarah (BID ID -3507783)