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Chapter 4: Lean Concepts - Coggle Diagram
Chapter 4: Lean Concepts
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Waste (muda): costs money because it is unnecessary time, labor, or material in the process
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Overproduction: a product, part, or service was produced too fast, at the wrong time, or in too much quantity
Think of the restaurant example with burgers and fries, you want to master the perfect system where enough burgers are being made within a time where burgers aren't being overproduced and wasted (understanding traffic trends)
Creating reports no one reads—or creating highly detailed reports when an overview would be enough is overproduction
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Correction: Also known as muda of rework, Organizations nstitute in-process quality checks that route work with defects back for correction
When rework occurs, it increases overall process time and uses additional labor and materials to create a smaller amount of products
Correction, or rework, can occur in any type of process
To eliminate rework or correction, organizations must use a twofold approach
1) look at the root cause
2) create quality steps that reduce rework waste
Inventory: occurs when materials or inputs stack up before a step in the process (also called bottleneck)
Inventory waste can occur when items are purchased or created before they are needed in a manufacturing or service process
Inventory can also occur in work queues, digital data queues, and email inboxes but especially common in processes that operate in batches
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Conveyance: involves the movement of outputs, products, or resources (muda of transportation)
Spaghetti diagram process map, or value stream map can help you identify areas where muda of conveyance might exist. Spaghetti map is good for physical conveyance and process maps help in digital settings
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Overprocessing: occurs when an employee or process inputs more resources into a product or service than is valued by the customer
goal of any process should be to do just enough useful and necessary work to ensure that customer or end-user expectations are met
Waiting: efers to any idle time in a process, whether that idle time is for machinery or people
Other forms of waste: talent, ideas, capital/cash
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5S: sort, straighten, shine, standardize, sustain
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