works contract for day to day preventive and breakdown maintenance including emergency breakdowns at night in 400kv, 230kv and 110kvehvlines in vinnamangalam sectionunder the control of vinnamangalam operation divisionin thiruvalam operation circle for a period of 3 ( three ) years from the date of commencement ; 1 regular day to day works 2 fitter i class 3 mazdoor category ii 4 reliever fitter i class 5 reliever mazdoor category ii 6 emergency at nights 7 fitter i class 8 mazdoor category ii 9 additional manhours for every 60kms 10 mazdoor category ii 11 total eht line maintenance 12 mazdoor category ii 13 inr zero only