These concepts did not originate in Japan, but came from the United States. Visionaries including Henry Ford, pioneers such as Frederick Taylor, Frank Gilbreth, Harrington Emerson, and Charles Knoeppel began describing waste in manufacturing and identifying methods for reducing it. CANDO was Mr. Ford’s vision for supporting continuous improvement and the precursor of 5S---Clearing up, Arranging, Neatness, Discipline, and Ongoing improvement. Note the similarities between CANDO and 5S.
Mr. Henry Ford wrote in his book Today and Tomorrow (1926): "The first job was to clean up— that is always the first thing to do in order to find out what you are about…We cannot afford to have dirt around— it is too expensive. … Everything is painted and kept painted a light color, so the least bit of dirt will show. We do not paint to cover up dirt— we paint white or light gray in order that cleanliness may be the order of things and not the exception."
Visual methods introduced into our workplaces help us recognize and identify problems. Red tagging is a visual method for recognizing and removing waste, although after the waste has already been created. A visual tool that will help us reduce the amount of items that will eventually be red tagged is Kanban.
Kanban are authorizations to either produce or purchase materials needed for production. Downstream processes request additional materials only when needed from upstream processes. Pulling materials when needed avoids making/buying items that are not required, resulting in lower inventories, improved customer service, and increased quality. Kanbans are visual cards or tags used to communicate replenishments. Kanban also introduced visual signals such as signage and striping floors. For example, markings floors for designated inventory locations can quickly indicate whether there is need to replenish or not. Consequently, Kanban can be thought of as reducing waste through facilitating the Organization stage of 5S.
Painting/taping work areas, boundaries, and storage areas are examples of visual Orderliness. With these areas designated, anyone can quickly determine where things belong and when things are out of place. Color-coding tools, fixtures, and devices such as air or water lines helps us identify what type or category the items are and what machine uses them.
We may introduce checklists as visual Cleanliness tools to help manage inventory, equipment, and physical spaces. Posting daily equipment inspection checklists, for example, reminds operators of the specific tasks they must perform each shift.
If you enjoyed this blog post, you might also be interested in "Why Business Process Improvement is Still Important."
This post was co-authored by Charles Keberdle:
Charles is a Senior Manager in Meaden & Moore's Business Solutions Group. He has over 30 years of experience within operations management and supply chain optimization and has led or participated in over twenty enterprise software selection projects and multiple ERP implementations during his career.