bids are invited for repair, maintenance, and installation of plant/ systems/equipments (version 2) - bsnl nitno 14 providing electrical maintenance works for restoration of power supply to e1 e2 e3 and e5 quarters block in kaval byrasandra bengaluru; electrical system .. - laying of one number pvc insulated and pvc sheathed xlpe power cable of 1.1 kv grade of size 25sqmm to 120sqmm in the following manner etc as required a) in existing rcc/hume/ metal /dwc hdpe pipe , laying of one number pvc insulated and pvc sheathed xlpe power cable of 1.1 kv grade of size 25sqmm to 120sqmm in the following manner including cl ing etc as required. a) on surface of wall , supplying and laying of 40mm inner dia size double wall corrugated (dwc) hdpe pipe isi marked along with all accessories like socket, bend, couplers etc. conforming to is 14930, part ii complete with fitting and cutting, jointing etc. direct in ground (75 cm below ground level) including excavation and refilling the trench but excluding sand cushioning and protective covering etc., complete as required. , providing, laying and fixing following dia b class gi pipe (medium class) in ground complete with gi fittings including trenching (75 cm deep)and re-filling etc as required a) 40 mm dia , cutting the existing cement concrete by mechanical/ manual digging, clearing the debris etc., and making good the damages with 1:3:6 cement concrete approximate width 150mm finishing and making good the damages etc as reqd. , supplying and making end termination with brass compression gland and aluminium lugs for 4core 25 sqmm size pvc insulated and pvc sheathed / xlpe aluminium conductor cable of 1.1 kv grade as required. , painting and servicing of meter board including opening of door covers removing and clearing of rusted surface tightening of busbar and wiring cable terminals blocking of rat or squirrel entry to the meter board painting with two coat of synthetic enamel paint of approved color replacing and making good and greasing of door hinges restoring of power supply to the qtr block etc as required. , providing arrangement for extending supply to quarters block with 2x10 sqmm weather proof al conductor overhead wire including connections, arranging shutdown from bescom authorities etc as required , providing missing doors for meters/bus bar chambers in existing meter board fabricated with 16swg ms sheet including cutting bending to the required size and shape, drilling, painting, providing missing hardware, gaskets etc as required