Henry Ford’s CANDO philosophy – the origin of 5S?
The idea behind 5S isn’t all that new. These days, most lean experts agree that Toyota drew inspiration from the CANDO method developed by Henry Ford (1863-1947), which is believed to have been in use at Ford plants even before 1920. The acronym CANDO stands for Cleaning up, Arranging, Neatness, Discipline and Ongoing improvement. It doesn’t take much to spot similarities between the two methods. In fact, Ford was visited by a team from Toyota in 1950, and then by Taiichi Ohno – a founding father of the Toyota Production System – six years later. In other words, the impact CANDO has had on the 5S methodology is not something to be ignored.
Targeted error prevention with Poka-Yoke
Poka-Yoke translates as “prevention of carelessness”. If production systems are planned in line with Poka-Yoke methodology, staff are less likely to make inadvertent mistakes or random errors. By proactively implementing preventive measures, processes can be designed in a way that ensures errors are anticipated at the early planning stage and thus avoided as far as possible. There are actually two different types of Poka-Yoke – hard and soft. The latter focuses on highlighting a potential error, whilst the former prevents mistakes from being made in the first place.
Poka-Yoke usually, but not always, takes the form of visual signals, making it a standard tool for putting visual management into practice. Examples of Poka-Yoke based on visual elements include:
- Same material
- Mechanically locked connections
Ultimately, using Poka-Yoke specifically helps staff to concentrate more on their work and avoid mistakes when operating equipment, thereby reducing the risk of disruptions.