Value Stream

The Value Stream comprises all activities and processes being carried out to manufacture a product or provide a service. This includes the flow of all material and information and can also exceed the boundaries of the company. The Value Stream can be further analyzed...

Push System

Pull and Push are two different ways to trigger the start of a process step. In a Push system, the action is triggered only when the required input is available: Products are pushed through the manufacturing system. Once everything is available for the process step,...

Pull System

Pull and Push are two different ways to trigger the start of a process step. In a Lean Pull system, the action is triggered when an item of the next process step is withdrawn: the consuming process withdraws the required quantity from the preceding process. Put more...

Skills, not used (Type of Waste)

While the other Types of Waste all belong to the process, the waste “Skills, not used” means not using all the intellectual power available within the organization for solving problems, improving processes and avoiding mistakes. Lean means especially...

Defects (Type of Waste)

Defects are items that are not conforming to expectations or customer specifications. They are waste, as they lead to scrapping, extra efforts for rework and/or re-inspection, and to additional documentation, thus meaning a loss of time and money. Examples: A burnt...