A problem is a matter or a situation regarded as unwelcome or harmful and it needs to be dealt to overcome. Root cause analysis is a method of detection of the problem and solving it to the maximum extent possible.

Getting into the roots of the problem and knowing where the problem arrived will make it more to find out its main cause and to find an appropriate solution.

Root cause analysis is the building block in the organisations continuous  improvement efforts which gives a simple solution to the problem

We can know the primary cause of the problem

i)Determine what happened

ii)determine why it happened

iii)figure out what to do to reduce the likelihood for it to happen again

the major goals of the root cause analysis

i)first goal of the root cause analysis is to discover the root cause of the event

ii)the second goal is to fully understand how to fix, compensate, or learn from the underlying issues within the root cause

iii)the third goal is to apply what we learn from this analysis to systematically prevent future issues.


The 5 whys serve as a way to avoid assumptions and finding detailed response to incremental questions, answers become clearer and more consise each and everytime.


A football player is suffering from headache

1st why- why do you have a bad headache?

Ans- because  I cant see staright

2nd why-why cant you see straight?

Ans-because my head hit the ground

3rd why- why did your head hit the ground?

Ans- I got hit tackled to the ground and  hit my head hard

4th why- why did the ground hit so much?

Ans- because I wasn’t wearing a helmet

5th why- why weren’t you wearing the helmet?

Ans- because we didn’t have enough helmets in our locker room.


The tendency of the investigator to stop at symtoms  rather than going on to lower level root causes

Lacking of the knowledge of the people included in finding the root cause.

Lack of support from concern team to find the answers to the questions formed.


It is a process to prepare a checklist or table of actions related to the the current running processes in any organisation. In case of failure, the master checklist is reffered to find deviation .


This process is limited for simple and direct actions.


It is also known as ISHIKAWA diagram. This helps to track down the reason for imperfections, variations defects or failures.

The diagram looks like a fish’s skeleton with the problem atits head and causes for the problem feeding into the spine.

Ishikawa identified 5 key areas which occur repeatedly in either type of analysis

  1. People
  2. Processes
  • Machines
  1. Materials
  2. Environment


  1. Being a visual tool, it is easy to understand and analyse
  2. It helps to find ways to improve problem



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