A fishbone diagram, also known as an Ishikawa diagram or a cause-and-effect diagram, was developed by Kaoru Ishikawa in the 1960s. It is a visual representation of the causes of a problem or failure. The diagram is structured as a fish skeleton, with the problem or event being represented by the head of the fish, and the causes of the problem branching off the bones of the fish.
Fishbone diagrams are used in maintenance to identify the root cause of a problem. They can also be used to identify patterns and trends, which can help prevent similar problems from occurring in the future. In this article, we will define what a fishbone diagram is and share a use-case example of how a fishbone diagram can be used.
What is a fishbone diagram?
Fishbone diagrams are a visual tool that shows all the possible reasons a problem or event may have occurred, as well as their source. It can be useful if the maintenance team is coming up short when troubleshooting an issue. Every possible cause is categorized by its source. Causes are then reduced again and again until you can isolate the root cause of a problem or outcome.