Trimming, Bush cutting near HT OHLs and other maintenance works of all HT OHLs during Monsoon-2025 in Amlohri Mines.

Amount

Part-A

Supply of MS Nut bolt and washer(5/8'' x4'' - 5/8'' x 8'')

Supply of 11 KV Gr Stay Porcelin insualator

Supply of 30/36 KV,10 kA Lightning Arrester

Supply of 6.0/7.2 KV Gr,05 kA Lightning/Surge Arrester

Supply of HDPE Tarpaulin for covering of field switchs,isolators & starters etc during monsoon (Size-12 ftx15 ft)

Part-B:

Excavation .of pole pit size 0.8 x 0.8 x 1.8 mtr in soft/hard rock /soil.(1.152x 30 nos)

Erection of 13 to 16 Mtr Long Tubuler Pole

Grouting of Pole with Mine Boulder and 1/2 bag Cement

Installation of Lightning Spike/Air Terminal System/Trishuls on Pole /Structures with supported insulated braket/clamp (suitable for isolating with pole/structures )including welding,cutting with all other accessories (if required)

Installation of Lightning/surge Arrester (6.0/7.2 KV Gr)on Poles with supported insulated braket/clamp ( suitable for isolating with poles including welding,cutting with all other accessories (if required) (at the end of OHL , 1set =03 Nos))

Painting of Tubular Poles 13 to 16 Mtr Long with RED colour double coat (Paint and all other tools/accessories to be provided by Contractor)

Numbering of Poles with yellow colour after painting (Paint and all other accessories to be provided by Contractor)

Supply and fitting of HT post Insulators on poles/structures for 25 mm x5 mm strip laying without touching pole and structures (including welding,cutting with all other accessories requied at site for fitting)

Installation ,Testing & commissioning of 11 KV Gr,1250 Amp Isolator (GOAB switch) on Poles in mine (on DP/TP/FP) including all other accessories work required at site (like cutting,welding etc)

(5.9) Supplying and laying 25 mmX5 mm G.I strip at 0.50 meter below ground as strip earth electrode, including connection/ terminating with G.l. nut, bolt, spring, washer etc. as required. (Jointing shall be done by overlapping and with 2 sets of G.I. nut bolt & spring washer spaced at 50mm)

Earth pit as per IS 3043 including supply of materials with connection

Erection of Stay set with stay Insulator including tensioning as per requirement

Fabrication of MS Channel,angle,flat in shape of bracket,clamps,trishul and supports etc as per requirement for guarding and other miscellaneous works

Erection of fabricated bracket ,clamps,trishul ,supports, M S channel,Angle etc on SP/DP/TP/FP as per requirement for guarding and other miscellaneous works

Erection/Laying & stringing of AAA conducters for tightning of loose Spans of OHL

Laying & stringing/tightning of Earth wire

Installation ,Testing & commissioning of lightning arrester 30/36 kV grade including connection with earthpit including all other accessories work required at site (like cutting,welding etc)

Supply & Erection of Danger Bord with Back clamps

Supply & Erection of barbed wire on pole 1 mtr long

Tree Trimming and Gross/bush cutting near and surrounding OHLs

Total impact of GST for the purpose of CTC