Preventive maintenance of 11 kV OH Electric Line between Gandhinagar Sub-Station to the 33 kV MRSS Main Substation, under Bokaro Colliery, BnK Area.

Amount

Erection of ACSR conductor of 7/3.35 mm to 7/4.00 diameter and above including binding etc. as required (50 m x 3 phase x 5 span x 0.394 kg = 295.5 kg) (for DOG Conductor)

Supply and erection of 6 S.W.G. G.I. wire for earth continuity and cradling work. (50 m x 3) x 4 span + (50 m x 8) span = 1000 m x 0.116 kg = 116 kg

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

Supplying & erection of 11 KV disc insulator for 11 KV over head lines with galvanised insulator fittings, ball and socket type and complete with galvanised strain clamps, bolts, nuts, washers etc. as required.

Supplying and erection of 11 KV pin insulator complete with large steel head G.I. pin, nuts, washers etc. as required

Supplying of channel iron 75 mm X 40 mm X 6 mm (7.14 kg per metre) cross arm for two 11 KV over head line conductors complete with 50 mm x 50 mm x 6 mm angle iron bracket welded to the channel iron and complete with 50 mm X 6mm M.S. flat iron clamps, bolts and nuts including drilling holes for insulator pins, bolts, nuts and washers etc (as per drawing) and painting with primer and finish paint as required.

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/ 33 KV as required (1 no. pole top & 1 no. straight two wire)

Supplying of two lengths of channel iron 75 mm X 40 mm X 6 mm (7.14 kg per metre) double pole cross arm for three wire 11KV over head line conductors complete with through bolts and nuts for clamping to the poles, 50 mm X 6 mm 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.

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

Dismantling of over head lines comprising of copper/ aluminium over head conductor, G.I. wire, cross arms, insulators etc. as required. ((50 m x 3 phase x 6 span x 0.394 kg = 354.6 kg)

Cleaning Jungle including uprooting of rank vegitation grass, bush wood, trees sand saplings of girth upto 30 cm measured at a height of 1 m above the ground level and removal of rubbish up to a distance of 50 m outside the periphery of the area cleared.

Total impact of GST for the purpose of CTC

NATIONAL ELECTRICAL WORKS

SANTOSH KUMAR SINGH