applies where reliability benefits outweigh the cost of implementing the preventive maintenance measures. This type of maintenance is costly, inefficient and may not even extend component lifetime. Many modern utilities have now replaced their routine maintenance that is based on rigid schedules with a more flexible program using periodic or even continuous condition monitoring (predictive maintenance). The predictive maintenance routines include group of programs such as Failure Modes and Effects Analysis, Evaluation of Needs and Priorities and Flow Charts for Decision Making.