Shewhart首先使用six sigma来衡量产品质量。 6 sigma : 每百万样本只有3.4个错误 (正确率99.99966%) 5 sigma: 每百万样本有233个错误 (正确率 99.7%). 上下两者相差68倍。 Sigma等级计算,即“正确率”。到达99.99966%就是6 Sigma。 如果做一件事的正确率是99.5%,也只能达到可怜的Sigma 4 - 4.1水平 正确率(...
Lean Six Sigma (LSS)Failure factorsTOPSIS SIMOS approachPurpose - Many projects focus on the reliable operation of the activities in the project. Any failure in the process activities leads to major problems resulting in waste, defects, equipment damage, which has a direct impact on the consumers...
Repairs.Lean Six Sigma can reduce the number of repairs during construction projects. For example, in the construction and connection of pipeline sections, welded connections can deteriorate, causing connection failures. By implementing Lean Six Sigma training, welders can learn how to avoid connection ...
A review of Lean Six Sigma (LSS) literature highlights two main issues: first, failures are extensively reported in LSS implementation; second, LSS, which is a knowledge-intensive performance improvement methodology building upon the use of data and scientific methods, is itself disconnected from ...
If your company experiences frequent equipment breakdowns, Lean Six Sigma can be used to analyze and improve the maintenance process. By applying the DMAIC methodology, you can identify root causes of failures, such as inadequate maintenance schedules or the use of substandard parts, and implement ...
In a similar way, Lean and Six Sigma are like two sides to the same coin where both sides should be used in balance with each other to improve the chance of finding the "hidden treasure" in the business - OK, maybe not the ark of the covenant, but it could still lead to the disco...
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What is Six Sigma:Six Sigma focuses on reducing variability, thereby improving product/process quality. Variability stems from failures, setups, long infrequent disruptions, synchronization requirements, and many others. Variability causes congestion (i.e., WIP/cycle time inflation), propagates through...
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Six Sigma is the on-going effort to continually reduce process and product variation through a defined project approach. Combined, the two approaches drive continual improvement, building a philosophy that is the foundation of all effective management systems and any business that wants to grow and ...