ABSTRACT

Over the past twenty years maintenance has changed, perhaps more so than any other management disciplines Moubray (1997:1). The changes in the oil plants are huger due to using high technology equipments. These equipments which enjoy complex design need new maintenance technique and skillful persons.

Meanwhile Oil and Petrochemical plants are those industry that their maintenance cost are extremly huge.

New maintenance techniques such as condition based maintenance and relaiability centered maintenance are intoduced to reduced maintenance cost by managing required maintenance tasks and resources as well as reducing cost of unplanned downtime. Where is the start point? where is the bundry of each techniques in practical?  And finallly what is the benefit of condition based maintenance.

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