Measuring Improvement without Data

When faced with a process that cycles infrequently it is often deemed impossible to measure the improvement from the current state to the future state. It doesn’t have to be.

FMEA (failure mode effects analysis) can be used to show before and after improvements based upon the difference in RPN (risk priority number) Score. The question then becomes, “What does an RPN reduction of 500 points actually mean from an improvement standpoint?”

We have developed a table that links the RPN Score to Process Yield which in turn links to Process Sigma. By using the table we can calculate the improvement in Process Sigma from the current state to the future state.

To see how this concept works take our Free Nano Course. Complete topics in 5 minutes or less. (this course is actually about 8 minutes, oops)

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This Nano sized course introduces FMEA, RPN, and converting RPN to Process Sigma Level.

FMEA (Failure Mode and Effects Analysis) is a powerful tool for identifying, defining, and quantifying root causes to operations issues.

The RPN (Risk Priority Number) is calculated by multiplying the severity score times the occurrence score times the detection score.

The RPN quantifies the impact of a potential root cause providing the means to rank the root causes.

This is how we separate the vital few from the trivial many.

Converting the RPN into a Process Sigma Level is shown in a handy table.

When processes cycle infrequently the FMEA, RPN, and conversion to Process Sigma level provide the means to quantify the improvement.

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