works contract for day to day preventive and breakdown maintenance including emergency breakdown at night hours of 765 kv, 400 kv, 230 kv and 110 kv eht lines in s.p.koil operation division in sriperumbudur / operation / circle and the work inside the switchyard of the substation during annual maintenance or for attending to other sub-station related works or other works as per requirement of and as directed by the engineer / officer in-charge for a period of 3 years from the date of utilization. , regular day to day works , fitter i class , mazdoor category ii , reliever fitter i class , reliever mazdoor category ii , emergency at nights , fitter i class , mazdoor category ii , total eht line maintenance , mazdoor category ii ,