SPECIAL REPAIRS TO EARTHING OF E/M INSTALLATIONS AT NORTH OF RAILWAY LINE UNDER GE MISSAMARI

Amount

Excavation in trenches, not exceeding 1.5m wide and not exceeding 1.5m in depth for column & wall foundation, UG Cable and getting out in soft/loose soil complete all as specified and directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers n exc 25 cm layers in soft/loose soil complete all as specified and directed.

Removing excavated material (Soil) not exceeding 50 metre and depositing where directed at a level not exceeding 1.50 metre above the starting point complete all as specified and directed.

S&F Porcelain insulator 75mm suitable for fixing of eathing strip/GI earth wire complete all as specified and directed.

M&L maintance free chemical Earthing system complete with 3 Nos pure copper earth rods 17mm dia, 3000mm long electrode dipped fully in earthing Ennob chemical Backfill compound (EBFC) with minimum 3 Nos of 30Kg bag buried in ground to bore holes 200mm dia vertically to a depth not less than 3.5 mtr deep below the ground level with top edge of earth electrode at a depth not less than 3000mm below normal ground level, interconnected each other parallely in traingle shape horizontaly with provision of copper bus bar of size 32mm x 6mm for interconnection with copper earth lead strip 32mmx6mm for further connected to test point block NABL lab certified back fill eath enhancing compound for filling 3 x bore holes with soil mixed so as to achieve eath resistance below 1 Ohms including necessary Excavation in Soft/Loose Soil, Returning, Filling in and removal of Surplus Spoil upto a distance of 50.00 METRE and provision of Poly Plastic Pit cover for each eathing and testing on completion including taking dismantling/taking unserviceable Earthing complete all as specified and as directed NOTES : (i) The unit rate includes for protection pipe and copper strip from top of earth plate up to 7.00 meter above ground level. (ii) MOU With Manufacturer’s of Chemical Earthing shall be submitted during Technical bid documents and financial bids of only those tenderers shall be admitted whosoever MOUs are found to be satisfying contract conditions. MOU shall also cover the aspect towards Guarantee and defect rectification during guarantee period

S&F in repair of earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit /pipe or fixed to poles duly fixed over insulators or any other indicated situation for loop earthing etc as required with 32 x 6mm copper strip duly brazed complete all as specified and directed.

S&F in repair of earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit /pipe or fixed to poles duly fixed over insulators or any other indicated situation for loop earthing etc as required with 20 x 3mm copper strip duly brazed complete all as specified and directed.

S&F in repair Test point terminal block made of gun metal or Phosphorus bronze size 75 x 75 x 25 mm, drilled and screwed including 3 Nos 8 mm dia 25 mm long hex head screw in a test point box complete all as specified and as directed.

M&L 40mm bore GI pipe light grade with all necessary fittings (ISI marked) as in earthing strip protection laid in trenches/road/floor complete all as specified and as directed.

M&L making of PCC Chamber cover in PCC (1.3:6) type C1 (using 20 mm graded stone aggregate) with Cover Slab 350x350 x50mm, reinforced with and including 8.0 mm dia TMT Bars @ 100 mm centre to centre both provision of handle with 10 mm MS bar and GI wire mesh and Funnel for water pipe complete all as shown in Electrical Plate No. 3 of MES Schedule Part-I and as directed

P&B Infrastructure (BID ID -3056272)