repairing of smps power plant modules , racks and cards under bongaigaon ssa , repairing of smps module on call basis , repairing of smps module 200amps 48vdc including replacement of faulty spares of all makes available in ssa , repairing of smps module 100amps 48vdc including replacement of faulty spares of all makes available in ssa , repairing of smps module 50 amps 48vdc , including replacement of faulty spares of all makes available in kamrup ssa , repairing of smps module 25amps 48vdc , including replacement of faulty spares of all makes available in ssa , rack with cards & accessories repair of 200 amps/48 volts p . p . , repairing of smps rack with cards & accessories repair of 100 amps/48 volts p . p . , repairing of smps rack with cards & accessories repair of 50 amps/48 volts p . p . , repairing of smps rack with cards & accessories repair of 25a mps/48 volts p . p . , battery load testing ( 400ah , 600ah , 1000ah , 2000ah , 3000ah ) , construction of chamber for 100mm sluice plates , construction of chamber for 100mm sluices valve , laying and jointing pvc pipe . heading , plain cement concrete 1:4:8 ( one cement four fine aggregates and eight coarse aggregates ) using , brick work in c . m 1:5 mix using 2nd class ground moulded chamber burnt bricks with including cost , construction of chamber for 100mm sluices valve , construction of chamber for 100mm sluices valve