AVAILABILITY AND RELIABILITY INDICES: A PRACTICAL APPROACH FOR AFAM THERMAL PLANT ASSESSMENT AND IMPROVEMENT

Abstract

Mechanical integrity and risk analysis for power stations are often based on few failure data. The risk issue is to reduce and forecast future failure and corrective actions taken to mitigate down time. The power station has been acquiring equipment failure data for many years. Seldom is the data analyzed in a scientific manner, and rarely the acquired data used to solve their maintenance problem. The objective of this paper is to mine piles of existing data and how age to failure data can be in a thoughtful manner and used for reliability and availability purposes. Weibulll graph is used for the failure data.