How do I determine the reasons for downtime?.Do I track individual pieces of equipment, a production or the entire plant?.In this issue, we answer the following questions: You will find this called the Overall Equipment Effectiveness in the literature. So, we also go beyond just uptime and include the rate at which the line is running, the planned "not scheduled" time, and the rate of quality product to determine an overall efficiency. If you are simply reworking product, you are not adding to the income of the company. You can be up 100% of the time one day, but if you are running at half of what the equipment can do, you are really not performing very well. Uptime by itself does not tell the full story. This newsletter describes how to track downtim e (and overall equipment efficiency) using control charts and Pareto diagrams. Equipment downtime in a plant is almost always an issue, particularly if the downtime occurs at the bottleneck in the plant. We close this year's newsletters with one on how to use SPC in tracking uptime and efficiency. We hope you have enjoyed the newsletters over the years and that the information in them has been helpful to you. This marks the end of our 8th year of monthly newsletters for us - this is number 96. And, we wish you a Happy New Year and the best of luck in 2012. As 2011 draws to end, we hope that you had a wonderful year both in your personal life and your work life.
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