To define a new Failure Mode, select the appropriate options from the drop-downs for Function and Functional Failure. Either select a Failure Mode from the existing data or add a new one. If adding a new Failure Mode, also provide a Failure Mode Description.
Note: When selecting a Failure Mode from the existing basic data, the Failure Mode Description field cannot be edited.
Next, select the Symptom and Failing Component from the respective drop-downs. The Failing Component options are filtered based on the Item Class and Object Type. Components connected to a specific Item Class and Object Type, as well as those not linked to a particular Object Type, appear in the drop-down. Complete the process by specifying the Effects of the failure.
The Max RPN field displays the highest Risk Priority Number (RPN) across different risk categories for each Failure Mode, as defined in the Criticality Matrix Basic Data. This allows for the comparison of RPN values between various Failure Modes, helping to identify the most critical modes that require immediate action.
The Failure Mode details for a crane, for example, can be movement failure of trolley motor. Choose "Movement of a load by a crane" for the Function and "Crane fails to move at the required speed" for the Functional Failure. Select "Reduced trolley speed" from the drop-down field for Failure Mode and "The trolley moves the load horizontally at a reduced speed of 1 meter per second instead of the specified 2 meters per second at 30 meters" will be fetched as Failure Mode Description. From the drop-down, select "Trolley motor" as the Failing Component. "Audible differences in motor operation, such as unusual noises or changes in pitch" can be listed as the Symptom, with "Potential increased wear on the motor and mechanical components due to prolonged operation under load" as the Effect.
It is possible to modify or delete the added Failure Mode. Further detailing of the Failure Mode can be done by adding a Failure Mode Description and Effects.
Note: A new Failure Mode cannot be defined if it already exists under the same FMECA Function and Functional Failure.
As a result of this activity, a new Failure Mode is created.