Mura &Muri 介绍,对我非常有帮助,共享给大家

Mura (Irregularity) 不平衡
The variation in work content or unevenness in
flow resulting in needs to generate waste to
manage it
工作内容的变化或者流程的不平衡，导致了管理浪费产生的需求

Examples
• Fluctuation in cycle time to complete a task
完成任务的周期时间的起伏
• Work content varies greatly by product model
工作内容随着产品型号变化巨大
• Unleveled production schedules
生产计划不平衡
• Disruptions to operations: Set ups/breakdowns
生产中断：设置/停线
Consequences 后果
• WIP and capacity are necessary to buffer out
variability
WIP和产量对减少变化至关重要
• Conformance to pace is very difficult
步调难以一致
• WIP decouples processes and hides problems
WIP减少流程震荡、隐藏问题
• Difficult to achieve throughput
产量难以完成


Muri (Burden) 负担
The strenuous condition for both worker and
machine as well as for the work processes
工人、机器和工作流程的紧张状况
Examples
• Fatigue issues, excessive lifting 疲劳作业、过多的抬举
• Ergonomic issues 人类环境改造
• Operator must think to do it right
操作人员必须思考如何做对做好
• Uncertainty of work content 工作内容的不确定
• Reliance on human or stress on performance
对于人的信任
• Excessive overtime 加班
• Continuing to operate a machine with problems
持续运作故障机器
Consequences 后果
• Defects and rework 缺陷和反工
• Buffer with inventories 减少库存
• Employee injuries 工伤
• Morale and people discontent 士气和员工不满
• Late delivery of products/information 产品/信息延迟发送