| Definition and Formula for PM
terms
Can somebody give me definition and it's formula for
calculation of the following terms:
Vivek.K The question is too vague to give a precise answer. Uptime, Efficiency and Effectiveness will depend on how you have defined these terms, what sort of plant/process you are measuring and how you measure them in practise. Having said that, here is an attempt at answering your question 1. Uptime is the total time that a machine or process is available to perform its function. UPTIME = Total Time Available - Downtime Downtime consists of both planned and unplanned events. 2. Equipment Efficiency - What do see as the difference between 2&3? 3. Equipment Effectiveness as defined by Overall Equipment Effectiveness: OEE = Availability Rate x Performance Rate x Quality Rate Availability Rate = %Uptime of Total Time Performance Rate in most cases is related to Mean Speed as a percentage of Max. Speed. Utilisation is also a concept that fits into this category. Quality Rate is an expression of Good(conforming/saleable) products as a percentage of total products made. A, P and Q are all efficiencies in their own right. Hope this helps. Wayne
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