Repair, maintenance and upkeepment of 11KV Charhi Feeder during the FY 2024-25 under GM Unit, Hazaribagh Area

Amount

Erection of steel tubular or rail pole strut in cement concrete 1:3:6 (1 cement : 3 coarse sand : 6 graded stone aggregate 40 mm nominal size ) foundation including excavation and refilling and secured with holding clamps, bolts, nuts, etc. as required. (5% of total number of poles in 11KV Charhi Feeder = 308 *.05=15.4~ 15 nos.)

Supplying and erection of galvanised stay set for 11 KV over head lines complete with 19/ 20 mm dia X 1.8 metres long stay rod, anchor plate of size 45 cm X 45 cm X 7.5 mm thick, thimble, stay clamps, turn buckle ( 20 mm X 600 mm ), 7/ 4.00 mm dia G.I. stay wire and 11 KV strain insulator etc in cement concrete 1:3:6 (1 cement : 3 coarse sand : 6 graded stone aggregate 40 mm nominal size ) foundation including excavation and refilling etc. as required (10% of total number of poles in 11KV Charhi Feeder = 308 *.1=30.8~ 30 nos.)

Supplying of channel iron 75mm X 40mm X 6mm (7.14 kg per metre) pole top bracket/cross arm for single 11KV overhead line conductor complete with 50mmX6mm flat iron clamp, bolts, nuts and washers including drilling holes for insulator pins, bolts and nuts etc and painting with primer and finish paint as required. (5% of total number of channel iron 75mm X 40mm X 6mm (7.14 kg per metre) pole top bracket/cross arm arm for single 11KV overhead line conductor in 11KV Charhi Feeder = 129 *.05=6.45~ 6 nos.)

Supplying of channel iron 75mmX40mmX6mm (7.14kg per metre)V shape cross arm for two 11KV overhead line conductors complete with 50mmX6mm M.S. flat iron clamps,bolts and nuts including drilling holes for insulator pins,bolts,nuts and washers etc(asperdrawing) and painting with primer and finish paint as required. (5% of total number of channel iron 75mm X 40mm X 6mm (7.14 kg per metre) pole top bracket/cross arm for two 11KV overhead line conductors in 11KV Charhi Feeder = 129 *.05=6.45~ 6 nos.)

Erection of pole top/ straight two wire/ V shape two wire, angle iron/ channel iron, cross arm on steel tubular/ rail/ PCC pole for 11/22/ 33KV as required

Supplying of two lengths of channel iron 75mm X40mm X6mm (7.14 kg per metre) double pole cross arm for three wire 11KV over headline conductors complete with through bolts and nuts for clamping to the poles, 50mmX 6mm M.S.flats welded on one side to the channel iron and with bolts and nuts on the other side for tying the cross arms together, including drilling holes for insulator pins/fittings, bolts,nuts and washers etc (as per drawing) and painting with primer and finish paint as required. (10 % of total number of two lengths of channel iron 75mm X40mm X6mm (7.14 kg per metre) double pole cross arm= 76 *.10= 7.6~ 7 nos.)

Erection of double pole 3 wire cross arm for 11KV/22KV/33 KV overhead lines as required

Supplying and erection of 11 KV pin insulator complete with large steel head G.I. pin, nuts, washers etc. as required. (20% of total number 11 KV pin insulator in Charhi Feeder = 20% of 387 nos.= 77.4 ~ 77 nos.)

Supplying and erection of 11KV disc insulator for 11 KV overhead lines with galvanised insulator fittings, ball and socket type and complete with galvanised strain clamps, bolts, nuts, washers etc. as required. (20% of total number 11KV disc insulator in Charhi Feeder = 10% of 537 nos.= 53.7 ~ 53 nos.)

Erection of ACSR conductor of 7/3.35mm to 7/4 .00 dia and above including binding etc. as required. (20% of total spans of 11KV Overheadline of Charhi Feeder = 0.20* 201 spans = 40.2 ~ 40 spans)

Making of cradle guard by supplying 6SWG GI wire

Erection of cradle guard as required

Providing and making steel pole collor with cement concrete ( 1 Cement : 3 Coarse sand : 6 stone aggregate 20 mm) of sepecified size and shape including from work. Plastering if required curing etc as required. ( volume of pole/pipe not to be deducted (40X0.5X0.5=10)

Painting of pole above 10.00 metre and up to 12.00 metre by applying single coat Red oxide and two coat Aluminium paint and Accessories (Channel , Angle, Clamps etc)

lettering on panel and pole numbering (cost of lettering 1 cm leter = 5.05, cost of 8cm lettering 5.05 x 8 = Rs. 40.4)

Tree triming of charhi colony and charhi feeder from parej sub station to charhi distance more than 14KM (7 km X 2 times)

Dismantling of O.H. lines comprising of copper/ alluminium O.H. conductor, G.I wire, cross arms, insulators etc as req. (20% of total spans of 11KV Overheadline of Charhi Feeder = 0.20* 201 spans = 40.2 ~ 40 spans)

Dismantling of pole/street light standard/strut embeded in cement concrete etc as req. (5% of total number of poles in 11KV Charhi Feeder = 308 *.05=15.4~ 15 nos.)

Deployment of 1 skilled + 2 semi skilled man power (required for day to day maintenance during monsoon for improvement of power availability to feeder breaker)

Total impact of GST for the purpose of CTC

Nehru Electricals

Rajneesh Electricals

Maa Enterprises