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The work process associated with Continuous Improvement in use divided Root Cause Analysis into 3 categories based upon potential consequences starting at level C (least consequences) up to Level A (very significant).  By the process guidelines each level of RCF had associated with it an allowable amount  of resources which could be committed to its resolution.  It was the Big nail, big hammer, little nail, little hammer approach to resource allocation. Unlike some similar systems the procedure did not define the required RCFA tool to use at each level, but rather the allowable resources in order to ensure a good return on investment for the resources committed. The choice of the RCA tool to is based upon the nature of the problem to be solved, as certain RCA tools are more effective for certain types of problem solving. To continue the hammer analogy:  No matter how big the hammer is that you chose, if the problem requires a wrench, it is not going to be an effective analysis.

Hi Samuel. Thanks for this very interesting document. I downloaded it recently and it has been very usefull to develop our Maintenance Engineer training path. The tasks and responsibilities there are a practical way to perform a JTA to do a skills gap assesment.

I wasn wondering. In the document you mention Level A/B/C Root Cause Analysis. I haven't been able to find any literature that references these levels which I believe refer to the scope or the level of investigation required on the process. Could you share any references for this?

Thanks!
Rosana Reyes.