Related Topics and Links:

Failure Modes and Reliability Analysis

Using Mirror Groups in an FMRA

In both XFMEA/RCM++/RBI and BlockSim, you can use the Mirrors commands in the FMRA tab of the ribbon to place the exact same cause record in more than one location in the FMRA.

This is useful when you need to consider common cause failures (i.e., single faults that result in the failure of multiple components). Typical examples of common cause failures include impact, vibration, temperature, contaminants, miscalibration, improper maintenance, and so forth.

All cause records in a mirror group (i.e., "mirrored causes") represent the very same cause for the purpose of FMRA calculations/simulations. To accommodate this, the use of mirror groups will change the properties of cause records in the following ways. Note that there is no undo for changed cause properties.

Also note that, because mirror groups are resources, clearing or removing the causes will not delete the mirror group resource from the project. To delete a resource, use the Resource Manager.)

 

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