Lean Process Glossary

The Lean process glossary contains terms used in Lean Manufacturing and Service. The Lean process philosophy of continuous improvement can be applied to both transactional / administrative and manufacturing / operational processes. 


  • Andon is a visual production-control device (usually a lighted overhead display) that continuously shows changing status of the production line and sounds alerts if a problem is imminent

5 (Five) S                                          

  • 5S is a methodology for organizing, cleaning, developing, and sustaining a productive work environment. Improved safety, ownership of workspace, improved productivity and improved maintenance are some of the benefits of 5S program

ERROR PROOFING                

  • Error proofing is a structured approach to ensure quality and error free manufacturing environment. Error proofing assures that defects will never be passed to next operation


  • Inventorory Turnover Rate is the number of times an inventory cycles or turns over during the year. A frequently used method to compute inventory turnover is to divide average inventory level into annual cost of sales


  • Heijunka or “level production” is a technique of achieving even output flow by coordinated sequencing of very small production batches throughout the manufacturing line in a lean production or just in time (JIT) system


  • Jidoka or “Automation with a human touch” being able to stop production lines, either manually by human intervention or mechanically, if there is a problem like an equipment malfunction, or quality issues, or work that is delayed for whatever reason

JUST IN TIME (JIT)                 

  • JIT is a philosophy of manufacturing based on planned elimination of all waste and continuous improvement of productivity. It encompasses the successful execution of all manufacturing activities required to produce a final product

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  • Kaizen is the Japanese term for improvement; continuing improvement involving everyone - managers and workers. In manufacturing kaizen relates to finding and eliminating waste in machinery, labor or production methods


  • Kanban is a simple parts-movement system that depends on cards and boxes/containers to take parts from one workstation to another on a production line. The essence of the Kanban concept is that a supplier or the warehouse should only deliver components to the production line as and when they are needed, so that there is no storage in the production area

LEAN METRICS                      

  • Lean Metrics allow companies to measure, evaluate and respond to their performance in a balanced way, without sacrificing the quality to meet quantity objectives, or increasing inventory levels to achieve machine efficiencies. The type of the lean metric depends on the organization and can be of following categories; Financial performance, behavioral performance and core process performance


  • LPI is a consistent method to measure lean implementation effectiveness. INDICATORS.  Real Time Performance, Continuous Improvement Implementation, Lean Sustain, Waste Elimination and Profitability


  • Layout Design is the organization of a production or service facility so that items having similar processing requirements are grouped together


  • Poka Yoka is an approach to 'mistake proofing' in all aspects of manufacturing, customer service, procurement, etc. It employs visual signals that make mistakes clearly stand out from the rest, or devices that stop an assembly line or process if a part or step is missed. Its older name is poka yoke (fool proofing)


  • MUDA is a Japanese terms for waste


  • MURA is a Japanese terms for Unevenness


  • MURI is a Japanese terms for Overburden

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ONE-PIECE FLOW                  

  • One piece Flow or continuous flow processing is a concept means that items are processed and moved directly from one processing step to the next, one piece at a time. One-piece flow helps to maximum utilization of resources, shorten lead times, identify problems and communication between operations


  • OEE measures the availability, performance efficiency, and quality rate of equipment - it is especially important to calculate OEE for the constrained operations


  • Prerequisite tree Is a logical structure designed to identify all obstacles and the responses needed to overcome them in realizing an objective. It identifies minimum necessary conditions without which the objective cannot be met


  • Process Route Table shows what machines and equipment are needed for processing a component or assembly. These tables aid in creating ordinary lines and grouping work pieces into work cells


  • Quick Changeover or SMED is a technique to analyze and reduce resources needed for equipment setup, including exchange of tools and dies. Single Minute Exchange of Dies (SMED) is an approach to reduce output and quality losses due to change overs

STANDARD WORK               

  • Standard work is the length of time that should be required to set up a given machine or operation and run one part, assembly, batch, or end product through that operation. This time is used in determining machine requirements and labor requirements


  • A Speghetti Diagram Shows the movement of material, identifying areas of waste. Aids teams to plan future improvements, such as one piece flow and work cells

TAKT TIME                               

  • Takt Time is the time required between completion of successive units of end product. Tact time is used to pace lines in the production environments

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  • TPM is a maintenance program concept, which brings maintenance into focus in order to minimize downtimes and maximize equipment usage. The goal of TPM is to avoid emergency repairs and keep unscheduled maintenance to a minimum


  • TPS is a technology of comprehensive production management. The basic idea of this system is to maintain a continuous flow of products in factories in order to flexibly adapt to demand changes. The realization of such production flow is called Just-in-time production, which means producing only necessary units in a necessary quantity at a necessary time. As a result, the excess inventories and the excess work force will be naturally diminished, thereby achieving the purposes of increased productivity and cost reduction

TRANSITION TREE                 

  • Transition Tree Is a cause and effect logic tree designed to provide step-by-step progress from initiation to completion of a course of action or change. It is an implementation tool


  • VA & NVA Lead time ratio Provides insight on how many value added activities are performed compared to non value added activities, using time as a unit of measure


  • VSM is a graphical tool that helps you to see and understand the flow of the material and information as a product makes its way through the value stream. It ties together lean concepts and techniques


  • Visual Management is a set of techniques that makes operation standards visible so that workers can follow them more easily. These techniques expose waste so that it can be prevented and eliminated

8 (Eight) WASTES:                            

  • Eight Wastes are Transport; Inventory; Motion; Waiting; Overproduction; Over-processing; Defects; Human Intellect. Additional wastes are: Energy; Pollution; Space

The Lean process glossary.

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