Related Topics and Links:

RPNs and Related Metrics

Quantitative Criticality Analysis

MIL-1629A Criticality Analysis

Qualitative Criticality Analysis

For qualitative criticality analysis, analysts use predefined rating scales to rate the likelihood of occurrence for each failure mode and the severity of the potential effects of failure. A matrix with severity on the horizontal axis and occurrence on the vertical axis can be used to compare failure modes.

Steps to Perform Qualitative Analysis

  1. Make sure that the applicable criticality analysis fields have been enabled for the project (on the FMEA > Criticality page of the interface style).

  2. Define the item(s) that will be included in the analysis.

  3. For each item, create an FMEA and define the functions, failure modes, effects and causes.

  4. Define the following for each failure mode. These factors can be specified via the Failure Properties window, FMEA worksheet, FMRA or MIL-1629A Criticality Analysis window (if it is enabled on your computer).

  1. To generate a report, choose Home > Reporting > Reports to open the Reports window and select all of the items you wish to include in the analysis. Then select the desired criticality reports, which are located under the Criticality heading, as shown next.

The following reports are applicable for qualitative criticality analysis:

(These reports can also be generated from the MIL-1629A Criticality Analysis window if it is enabled on your computer.)

 

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