When it comes to the Japanese terms Muri, Muda, and Mura, more often than not people will put Muda first, because it refers directly to the waste being avoided within the system, and although it is of vital importance, the order should be: Mura -> Muri -> Muda

Before we can do anything else, we must first plan and develop a system that involves no Mura. There must be no inconsistences and unevenness. If there is, it must be smoothed out to avoid creating Muda, the useless waste. This will ensure that when all other processes are set up, they will be following a consistent standard. All the processes together must first gain a reasonable level of unevenness by capacity.

When Mura is in place, and the inconsistences are still not yet reduced ideally, Muri will quickly surface. There are areas where Muri occurs beyond the consideration of Mura; such as having a high defect ratio, or the occurrence of bottle necking due to difficult operation.

Once the Mura and Muri had been sorted out, then it will be time to identify the waste, or Muda, in all the operations. There are 7 types of wastes altogether. These wastes can be reduced which will positively affect the process of Heijunka, or production leveling.

Space is a valuable resource in manufacturing, and any space that is not used for productive purposes can be considered wasted. This includes storage areas, unused machinery, and any other area that does not contribute to the production process. By reducing the amount of wasted space, manufacturers can improve their overall efficiency and profitability.

Transportation waste is a major issue in lean manufacturing. It occurs when goods are moved unnecessarily between processes, resulting in increased costs and decreased efficiency. This can be caused by poor planning, lack of communication between departments, or inefficient routing. To reduce transportation waste, manufacturers should focus on streamlining their processes and improving communication between departments to ensure that goods are only moved when necessary.

Waiting is a major source of waste in lean manufacturing. It can lead to delays in production, increased costs, and decreased customer satisfaction. Waiting can also cause inventory to pile up, resulting in higher storage costs and the need for additional space. Additionally, waiting can lead to quality issues due to lack of oversight or attention to detail. Finally, waiting can cause a decrease in morale among employees as they become frustrated with the lack of progress.

Rework and scrap are two of the most common forms of waste in lean manufacturing. Rework occurs when a product is not produced correctly and must be reworked to meet quality standards, while scrap is material that is discarded due to defects or other issues. Both of these wastes can lead to increased costs, decreased efficiency, and reduced customer satisfaction. By reducing rework and scrap, manufacturers can improve their overall productivity and profitability.

Lean manufacturing is a system of production that seeks to reduce waste in all forms, including the waste of movement. This type of waste occurs when workers move unnecessarily between tasks or locations, resulting in a decrease in efficiency and productivity. By streamlining processes and eliminating unnecessary steps, lean manufacturing can help to reduce the amount of time and energy spent on non-value-adding activities.

Excess stock is a form of waste that occurs when more inventory is produced than necessary. This can lead to higher costs, as well as increased storage and handling requirements. Additionally, excess stock can lead to decreased customer satisfaction due to longer lead times and out-of-stock items. By reducing the amount of excess stock, companies can reduce their costs and improve customer service.

Over-production in lean manufacturing is a major waste of resources, as it involves producing more than what is needed or desired. This can lead to increased costs, storage issues, and delays in production. Over-production also reduces the efficiency of the production process, as resources are used to produce items that may not be sold or used. To reduce this waste, manufacturers should focus on producing only what is necessary and strive for just-in-time production.

Unused human resources and skills represent a significant source of waste, when they are not being utilized to their fullest potential. This can lead to higher costs, lower productivity, and decreased customer satisfaction. By recognizing and addressing this issue, organizations can ensure that their employees are working at their highest capacity and that resources are being used effectively.