Root cause analysis (RCA) derives its benefit from observable evidence, credible data, and established practices. Ideally, a diverse team of knowledge experts assembles to investigate failure data, assess probable causes, and ultimately determine the underlining root cause of the failure event. By following a standardized process, RCA teams efficiently establish corrective action(s).
While teams often conduct RCAs to determine root causes and propose corrective solutions, frequently there is little follow-up to measure if the corrective action(s) results in measurable improvements – or if they have even been implemented at all. It is this final stage of root cause analysis, “closing the loop”, which determines the overall effectiveness of an investigation and prevents the failure from repeating.