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Home Business Balanced Score Card Total Productive Maintenance Overall Equipment Effectiveness OEE 5S workplace organisation and standardisation Single Minute Exchange of Dies Just in Time Design of Experiments (Dorian Shainin, Keki Bhote) Order Form |
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OEE : Overall Equipment EffectivenessThe OEE index has been developed by the JIPM (Japan Institute for Plant Maintenance). It is one of the pillars within the TPM method. The method distinguishes 6 loss types, and 3 categories: availability, speed losses and quality rate. The method's strength is that it makes the losses more transparent, and from experience we know that a good analysis provides a very good "picture" of the actual situation, which helps to determine both short and longer term improvement activities, including quantified benefits from each of the improvements.Gross Available hours Gross Available hours (#days/year: 365, 24 hours/day, 7 days/week) Planned Downtime For example: vacation, holidays, not 168 hours/week, not enough load. 1. Breakdowns/Machine failures Downtime because of machine failures 2. Setup and adjustment For example between product types, including "warmup time" after the actual changeover. Changeover time should be included here, and should not be included in the planned downtime. Changeover time can be reduced by applying the SMED System. 3. Small stops When these have not been causes by logistics. Small stops are typically shorter than 5-10 minutes. Small stops are typically minor adjustments, for example cleaning etc. This in contrast with machinefailures, where you will usually need maintenance personnel to solve it. 4. Speed losses Speed losses are caused when a machine runs more slowly than its optimal/maximum speed. 5. Rejects during production This includes all rejects and repairs during normal production, so after running in/warmup phenomena. 6. Rejects during running in/ warmup This includes all rejects and repair during startup/running in/ warmup. Schematically it can be represented as follows:  The calculation of the OEE index is as follows: Availability = (Planned production time - Unscheduled Downtime)/Planned production time The Production time = Planned production time - Dwontime The Performance = Cycle time x number of products processed/ Production time Now remains the Net Production time (= time products are produced) The Yield (Quality Rate) = (# processed products - # rejected products)/(# processed products) The OEE-index = Availability x Performance x Yield Click here to go to the list of recommended books. Tour Japan's Leading Manufacturing Companies! • Get exclusive access to Japanese Lean executives • All of the necessary arrangements are carefully made to ensure comfort and security • Experience world-class Lean practices as well as both modern and traditional Japanese culture • Group discounts are available "Excellent well-organized trip. Exceeded all expectations. Definitely an experience of a lifetime. I highly recommend every Lean learner to take advantage of this tour!" Jonathon Hutchinson, CEO Gormick Corporation Topics covered are: TPS, Employee Empowerment, SMED, TPM, Lean Accounting, Flow, 5S Office, 5S Shop floor, Waste Identification, Mistake-Proofing, Just-In-Time, Value Stream Mapping (VSM).
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