SPECIAL REPAIR/RAPLACEMENT TO JUNCTION BOXES, HT/LT CABLES/TRANSFORMERS AND RELATED WORK AT AIR FORCE STATION BARWALA AND AIR FORCE STATION CHANDIGARH

Amount

Excavation in trenches in soft/loose soil not exceeding 1.5 metre wide and not exceeding 1.5 metre deep for laying/taking out of cables and foundation of poles etc. and getting out, complete all as specified and directed.

Excavation in trenches in hard/dense soil not exceeding 1.50 metre wide and exceeding 1.5 metre but not exceeding 3.0 meter in depth ; for foundations of poles etc and getting out complete all as specified.

Returning, filling in trenches (soil), including spreading, leveling and well ramming in layers not exceeding 25 cm thick, complete all as specified and directed.

Removal of surplus excavated soil to a distance not exceeding 50 metre and depositing where directed at a level not exceeding 1.5 metre above the starting point, complete all as specified and directed.

Material and labour for sand cushioning with a layer of dry river sand, 80mm thick before laying of cable and 150mm thick (punned down to 100mm thick) after laying of cables, in trenches/ducts, complete all as specified and directed. Note : Punned down thickness (overall 18cm), shall be considered for measurement and payment.

Supplying and laying factory made unreinforced precast concrete cable cover HV type-1, flat, of size 300mm x180mm x40mm, laid flat and dry in trenches over the cable for protection, length perpendicular to the direction of cable adjacent to each other, complete all as specified and directed.

Supply and laying / fixing , GI pipe light grade 80mm bore for cable protection fixed to pole/wall or laid under floor/road/pavement with nuts, bolts, clamps etc as required, including taking out old pipe & removal, complete all as specified and directed.

Taking out / down old existing HT 11000 volt grade cables, size 120 Sqmm aluminium conductor, 3 core, XLPE, armoured, laid in trenches, including PCC / Brick Covers for protection, and stacking, removal to store for re-use or for credit, complete all as specified and directed.

Supply, laying, jointing, testing and commissioning of High Tension (HT), 11000 Volts (earthed) grade, XLPE insulated, screened, PVC bedded, galvanized steel strip armoured, electric power cable (heavy duty) with stranded aluminum conductor, cross sectional area 120 Sqmm, 3 core under ground cable including both side connection with cable lugs etc, laid in trenches, along poles or passing through pipes or laid under floor or through walls etc, complete all as specified and directed. Note : Excavation and earth work, sand cushioning and precast concrete cable cover/bricks for protection of cable shall be measured and paid separately.

Supply, jointing & testing, indoor end termination jointing kit (Heat shrinkable) complete with jointing material and accessories suitable for 3 wire, 11KV (Earthed) grade, HT, underground XLPE insulated armoured aluminium conductor, 3core, 120 to 185 Sqmm size cable, including taking out old joint kit and removal, complete all as specified and directed.

Supply, jointing & testing, outdoor end termination jointing kit (heat shrinkable) complete with jointing material and accessories suitable for 3 wire, 11KV (Earthed) grade, HT, underground XLPE insulated armoured aluminium conductor, 3core, 120 to 185 Sqmm size cable, including taking out old joint kit and removal, complete all as specified and directed.

Supply, jointing & testing, straight through jointing kit (heat shrinkable) complete with jointing material and accessories suitable for 3 wire, 11KV (Earthed) grade, HT, underground XLPE insulated armoured aluminium conductor, 3 core, 120 to 185 Sqmm size cable, including taking out old joint kit and removal, complete all as specified and directed.

Supply and fixing switch air break, triple pole, gang operated (GOD), complete with 12 insulators, drop out fuse unit mechanically operated, mounted on insulators and steel frame, non-ferrous knife and spring loaded contacts, arcing horns of adequate sections to break magnitising current of the transformer, with operating mechanism worked from ground level, for current rating upto 400 Amps, suitable for 11000 volts grade AC supply, including taking down old unserviceable GOD switch and removal, complete all as specified and directed. Note: All ferrous parts shall be hot dipped galvanised and non-ferrous parts shall be heavily dipped to withstand weather.

Supply and fixing Lightning arresters expulsion type complete with all fittings, distribution class, discharge capacity 65 Kilo Amps, long duration current impulse to withstand 250AP/2000 Seconds & energy dissipation capacity 2KJ/KV, suitable for 11000 volts grade system, fixed in position & tested, including taking down old u/s lightning arrester complete all as specified and directed. Make: OBLUM, SCHNEIDER, CROMPTON, ALSTOM LEMCOS CO

Material and labour for earthing complete with GI earth plate electrode of size 600mm x 600mm x 6mm thick burried directly in ground vertically (depth of pit not less than 2.25 m below normal ground level), with top edge of earth plate not less than 1.5 m below normal ground level, earth plate surrounded from all sides by 15 cm thick packed alternate layers of charcoal dust and common salt, electrode connections using galvanized iron strip of size 25mmx4mm thick (upto body of equipment) by means of nuts, bolts, check nuts & GI washers, connected to main switch board or main control board or test point, protected by galvanized iron pipe light grade 40 mm dia bore, and watering pipe 20 mm bore GI light grade pipe with funnel & wire mesh, including all necessary excavation & earth work, PCC chamber in PCC (1:2:4) type B-1 & RCC cover, all as shown in electrical plate No 3 of MES Schedule Part-I (2009), testing on completion, including taking out old earthing materials and removal complete all as specified and directed. Note(s) :- (i) RCC pit cover shall be pre-cast of RCC (1:2:4) type B-1, 80mm thick reinforced with XPM not less than 4Kg/Sqm. (ii) PCC chamber shall be constructed 500 mm away from the edge of earth pit. (iii) Rate shall include GI strip and protection pipe of length 7.5m, GI pipe beyond 7.5m length required at site shall be measured and paid separately. (iv) Earth resistance should be less than 3 Ohm. In case the test results are not found below 3 Ohm, complete earthing will be redone without any extra cost to Govt.

Material and labour in replacement for earth continuity conductor or main earthing lead 25mmx4mm GI strip 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 loop earthing etc. as required complete all as specified and directed.

Supply and fixing in replacement danger notice plate of 1.6 mm thick mild steel sheet vitreous enamelled white with letters figures and conventional skull and bones in signal red colour and fixed with MS clamps bolts and nuts of approved size for HT 250 x 200 mm size complete all as specified and directed.

Supply and fixing factory made (CPRI approved), HT bus bar Panel, size 1500mmx1000mmx500mm, cubical, outdoor type (Kiosk), weather proof, dust proof and vermin proof, IP-65 protection, fabricated out of 3.15mm thick MS CRCA sheet mounted on frame of appropriate size angle iron, welded on 50mmx50mmx6mm size angle iron frame & having four Nos legs made out of 50mmx50mmx6mm size of angle iron - 75 cm long each welded below frame, front & back openable with front double door having locking arrangements, bottom space for cable entry, provision of glands, with copper bus bars 630 Amps rating - 01 set (set of three) mounted on 6 Nos HT epoxy type insulators, 11000 volts grade of suitable size (not less than 130mmx70mm), duly sleeved with relevant colour code insulation & provision for 01No incoming & 02 Nos outgoing cables, including spray painting with two coats of synthetic enamel paint in dark grey shade over a coat of red oxide primer, duly provided with danger notice board 11000 volts, legs embedded in ground in PCC (1:2:4) bed blocks of size 30cmx30cmx60cm, including dismantling of foundation, taking out old & removal, complete all as specified and directed.

Horizontal Boring of Holes under road, Pavement, hard standing by trenchless technology using ultra sounding techique and necessary machine including provision of HDPE pipe of size 150 mm dia suitable for 0.4 mpa working pressure complete all as specified and directed by the Engineer in Charge.

Supply and fixing cable route indicator/ joint marker, of size 10cmx10cmx120cm precast RCC with reinforcement bar 8mm dia 4 Nos, 8mm stirrurps @ 100 mm C/C, including formwork for fair finish, including painting in red colour to route marker and white paint in letters, route marker to be grouted in PCC 1:2:4 type B1 bed block of size 300mmx300mm x200mm, complete all as specified and directed.

Supply and fixing/erecting in true vertical position, steel tubular pole, swaged, type 410-SP-55 (11.00 metres long), complete with cast iron base plate of size 300mmx300mm, finial taper plug, bolts, nuts, washer and screws including painting with two coats of aluminium paint over one coat of red oxide primer on all exposed surfaces and tarring with black bituminous paint to portion embedded in PCC including painting the pole with alternate black and yellow paint strip band 30cm long 5 Nos with synthetic enameled paint and numbering of poles with paint, complete all as specified and directed. Note : Earth work and PCC shall be measured and paid separately.

Material and labour for Cross arms, bracing, supports, clamps and back plates, fabricated from structural steel section Fe-290 grade E-165 quality including nuts, bolts, washers, and welding, bending cold or hot, drilling holes for bolts, in any shape or size as directed including two coats of alminium paint over a coat of primer and taking down old, complete all as specified and directed.

Material and labour for plain cement concrete 1:4:8 type D-2 using 40mm graded crushed stone aggregate as in foundation filling and mass concrete, complete all as specified and directed.

Material and labour for PCC (1:3:6) type C-1 using 20mm graded stone aggregate as in coping of pole etc including form work complete all as specified and as directed.

Supply and fixing pin type, porcelain, vitreous, brown insulator including one galvinised mild steel spindle, two galvainsed iron washers and one galvanised iron nut, 150mm height , 150mm dia for 11000 volt grade complete all as specified and as directed.

Material and Labour for replacement of Anti-climbing device; spikes type fabricated out of M.S. bars (round, square and flat) including nuts, bolts, washers and welding in two halves made to shape to suit the cross section of the pole complete all as specifed and directed .

Supply and fixing Compression/crimping type sleeve joints for jointing conductors/ jumper connections in HT poles, upto 10mm dia of conductor wire overall, including treatment with conducting jelly complete all as specified and directed.

Hardcore of gauge not exceeding 63 mm of broken stone or boulders, deposited, spread, levelled in layers not exceeding 15 cm thick, watered and rammed to a true surface, complete all as specified and directed. .

Note: The Total amount shall subject to adjustment of credit of Rs.1,31,966.00 for old Materials as per Schedule of Credit.

R D Bansal