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Failure Mode and Effects Analysis (FMEA): ExamplesThe Quality Toolbook > Failure Mode and Effects Analysis (FMEA) > Examples When to use it | How to understand it | Example | How to use it | Practical variations
ExampleA developer of a wordprocessor package received a number of complaints from its customer base about some specific features. On further investigation, it found that there were a limited number of effects that particularly annoyed customers. Working with their customers, they allocated severity ratings to these, as in the table below.
An FMEA table was used to record the results of failures found in user trace logs. Only modes that resulted in the target effects were recorded. Criticality calculations were weighted with the severity ratings to take account of the customer priorities. A part of one table is shown in the illustration. The analysis found that the mode with the highest weighted criticality score was when the disk became full. Further investigation found the actual cause was an uncurbed temporary file. The simple measure of putting limitations on the size of this file significantly reduced the defect rate.
Fig. 1. FMEA table Other examples
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