Lean Management Dictionary - Work organisation and flow in Lean: 5S, Kanban and SMED in practice

Why does tidiness in the workplace matter?

5S is a method of workplace organisation that includes: Selection, Systematics, Cleaning, Standardisation and Self-Discipline. It ensures that every tool and material has its place, increasing efficiency and reducing waste (Muda).

Example: shadow board - the missing tool can be seen immediately.

How does Poka-Yoke work?

Poka-Yoke is a system for preventing errors by designing a process or tool in such a way that a mistake is impossible to make or becomes immediately apparent.
Example: the SIM card only fits in one place in the phone.

What is Andon?

Andon is a visual system for signalling problems, usually in the form of lights or screens above the workstation. It allows you to quickly spot a disturbance and call for support.
Example: A green light means normal operation, a red light means stoppage and the need for intervention.

What is Obeya used for?

Obeya (Japanese for „big room”) is a space for project and strategy management. Objectives, indicators and status of activities are presented in one place, which promotes teamwork and transparency.
Example: project room with KPI boards and sprint plans.

How does Kanban work?

Kanban o a method of managing the flow of work and material with the aim of producing exactly what is needed - when it is needed - in the quantity that is needed.

Example: On the production line, emptying a container of components automatically triggers a Kanban signal for refilling it. Material is delivered exactly when and in the quantity needed - without creating stockpiles.

Kanban is not synonymous with a pull system - it is a practical tool that helps to introduce and maintain the work of pull logic in day-to-day operations....

What is the Pull System?

Pull The system is an approach where work only starts when there is a specific demand from the next stage of the process. It is the opposite of „pushing” products into a warehouse.
Example: a new batch is created only after the previous one has been used up.

What is Heijunka about?

Heijunka is a Lean method of aligning (levelling) production so that different products are produced in a stable, repeatable rhythm over time, instead of producing them in batches. Its aim is to reduce fluctuations, overloads and downtime, leading to smoother flow, less inventory and greater process predictability.

Example: production of 200 units per day instead of 1,000 on Monday and 0 on Tuesday.

Why is SMED so important?

SMED methodology (Single Minute Exchange of Die) is a method of rapid machine changeover - reducing set-up times to less than 10 minutes. It allows you to produce smaller batches and respond more quickly to changes in demand.
Example: mould changeover time reduced from 60 to 8 minutes.

Summary - Lean organisation and flow

  • 5S and Poka-Yokeensure order and quality.
  • Andon and Obeyasupport communication and rapid response to problems.
  • Kanban, Pull, Heijunka and SMEDenable a smooth, flexible workflow.

FAQ - Lean in practice

What is the 5S method?

5S is the five steps of workplace organisation: Selection, Systematics, Cleaning, Standardisation and Self-discipline. It makes the workplace tidier and more efficient.

What is Poka-Yoke used for?

Poka-Yoke is a safety system that prevents errors right from the work stage. This makes the process more reliable and safer.

What is the Kanban system all about?

Kanban is a method of visually managing tasks and workflow. Boards or cards show what is to be done, what is in progress and what has already been completed.

Why is SMED important for companies?

SMED reduces machine changeover times, enabling production of smaller batches and a faster response to market demands. This increases the company's flexibility and competitiveness.

Author:

Ireneusz Ochman

Lean Management expert with extensive practice in industry and services. For years he has been helping companies to increase efficiency, organise processes, make better use of available resources and implement modern management systems. Managing Partner at BE Partners.