

How to write the problem? → Do not write problem by the assumption

→ People tend to include the cause in the same sentence which indicates the problem. ➨ Point 1: Write the facts clearly - This is ok ⇢ Example 1: FG marking was not available on the tire.

⇢ In the above example, no assumption found. The issue is clearly mentioned so that is the proper method for the writing. ➨ Point 2: Statement with Assuming - That is not ok ⇢ Example 2: The inspector forgets to mark on tire.

⇢ In the above example, there is the only assumption with the cause is mention so it may be right or wrong so that is not a proper method.

→ There are too many methods and tools are available for RCA.→ Some tools are generally used for problem_solving such as (1)(2)(3) A3 Methodology [very famous in Toyota motors], etc.→ While other tools are dedicated to only RCA activities. such as (1) Why Why analysis or 5 Why analysis and (2)(Fishbone diagram or Ishikawa diagram), etc.→ Root cause analysis is the most important part of the TQM [Total Quality Management].→ It is a heart of problem_solving process and in addition, sometimes it is used as a part of continuous improvement activity.→ It is important to note that RCA is not able to generate a result but it is used as a part of a larger problem_solving project in the organization.⇢ A factor is considered the root cause of a failure or issue if after removing that factor, we will not find any repeated failure.⇢ It is a proactive approach.⇢ A factor is considered as a cause(s that is responsible for the failure but it is not a root cause(s) because by eliminating this casual factor we can improve the result of our process but the issue may repeat it will not prevent the recurrence of the problem with certainty.⇢ Sometimes it is referred to as the probable or potential_cause of failure but not the root_cause.⇢ The action is taken against the root_cause or casual factor so that the same problem for the same cause will not repeat again.⇢ In other words, we can say that countermeasure is the opposite of root_cause.