Fishbone Diagram for Root Cause Analysis
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The approach of “Five Whys” can be used as a tool for this part <ref name=”process">. | The approach of “Five Whys” can be used as a tool for this part <ref name=”process">. | ||
===Step 4:=== | ===Step 4:=== | ||
| − | At this stage of the Fishbone diagram all the possible causes that the team has been able to identify should be shown with the problem or effect. Then, the team can look into the causes they assume are most likely to impact, and inspect them further, e.g., by conducting a survey <ref name="mindtools" />. | + | At this stage of the Fishbone diagram all the possible causes that the team has been able to identify should be shown with the problem or effect. Then, the team can look into the causes they assume are most likely to impact, and inspect them further, e.g., by conducting a survey <ref name="mindtools"/>. |
====Risk Analysis==== | ====Risk Analysis==== | ||
Risk probability and impact assessment is a tool in the process of performing qualitive risk analysis and can be useful to the team in the last step of the Fishbone diagram. The process assesses the priority of the identified project risks and can be represented in a Probability and impact matrix [2]. | Risk probability and impact assessment is a tool in the process of performing qualitive risk analysis and can be useful to the team in the last step of the Fishbone diagram. The process assesses the priority of the identified project risks and can be represented in a Probability and impact matrix [2]. | ||
Revision as of 21:29, 21 February 2021
Abstract
The major cause of uncertainty in organizations is risk. It is crucial to be able to identify those risks and manage them before it can have an impact on the organization’s objectives. The Fishbone diagram, also known as the Ishikawa diagram or the cause-and-effect diagram. was created by Kaoru Ishikawa in the 1960s. It is a visual tool used to identify the possible causes to a problem or effect with the practice of brainstorming. The shape of the diagram resamples the side view of a fish skeleton, hence the name Fishbone diagram [8]. The Fishbone diagram sorts ideas into useful categories and can be helpful in identifying areas for improvement and possible causes that might not be considered using other tools. This article will examine the use of the Fishbone diagram in Risk Management, an overview of the tool and a step-by-step guide to develop a Fishbone diagram, including models and other tools that can be combined in the process.
Contents |
The Big Idea: Fishbone Diagram
Application: Fishbone Diagram
Step 1: Identify the problem
The first step for the team is to define a problem or effect that the team wants to analyze. For a successful Fishbone diagram, it is critical to define the problem correctly. Have the team think consider and identify who is involved, what the problem is, and when and where it occurs. When the problem has been identified it is written in a box on the center right-hand side with a horizontal arrow running to it, e.g., on a large sheet of paper or whiteboard. It is also possible to write the problem statement on the center left hand side, whichever you prefer. Resembling a head and spine of a fish, this layout, will give you space to develop ideas in the next steps [1].
Step 2:
In the next step the team identifies the factors involved in the problem or effect using brainstorming techniques. An example of these factors is Site, Task, People, Equipment and Control. To achieve the best outcome, try to identify as many of these factors as possible. Then, they are written down as branches off the spine of the diagram and resemble the bones [2].
Useful models
To help in this step of the diagram, teams often use common models of root causes/factors:
5M used in the Fishbone diagram - mainly for Manufacturing [3].
- Method (Assembly line)
- Mother Nature (Ambient humidity problems)
- Man (Teaching a single employee to find the defect)
- Machine (Age)
- Materials (Hard materials)
This method is also known as the 6 M method with the addition of Measurement.
8Ps used in the Fishbone diagram - mainly for Product Marketing Cite error: Closing </ref> missing for <ref> tag
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