Step 6 of the standardized FMEA method description:
Optimization, which is the 6th step of the FMEA according to the standardized FMEA method description, builds on the results of the risk analysis. If unacceptably high risks have been identified as input variables for the optimization in the risk analysis, optimization is the next logical step in the FMEA. As in the risk analysis, there are two options for minimizing the risk:
- Option 1: additional preventive actions
- Option 2: and/or additional detection actions
These are formulated in the optimization of the FMEA. There is a new value for the likelihood of occurrence (O value) and a new value for the likelihood of detection (D value). Of course, the O value and D value must be changed in the optimization of the FMEA to achieve the objectives.
Important: Strictly speaking, optimization of the FMEA does not come to an end. As long as the product is in use and being produced (P-FMEA) or as long as there is design availability (D-FMEA), the 6th step in the standardized FMEA method description according to the handbook (AIAG & VDA) must be repeated at regular intervals.
Detailed knowledge: Optimization in the FMEA method description
In the optimization of the FMEA, actions to reduce risk are defined on the basis of the risk analysis and they are assessed. The main objectives of the 6th step in the standardized FMEA method description according to the FMEA handbook (AIAG & VDA) are:
- Definition of further actions to reduce risk
- Scheduling of and specification of responsibilities for the actions
- Implementation of the actions including confirmation of their effectiveness and reconsideration of the risks
- Coordination between suppliers, customers, FMEA team and management
- Optimization of the starting point for improvement of the product requirements and process requirements
Optimization in the FMEA method description:
Continuous improvement and actions
With these actions, the optimization of the FMEA aims to minimize risk and increase customer satisfaction. In the 6th step of the standardized FMEA method description, the FMEA team reviews its results from the risk analysis and develops actions to minimize further the likelihood of occurrence of causes of failure. Actions can also be defined in the optimization of the FMEA, which improve the design without directly affecting the risk assessment.
The FMEA documents the progress. The original assessments of severity, occurrence and detection are not changed. In the optimization of the FMEA, additional actions are taken to reduce the risk further. The analysis thus becomes a fount of knowledge in which progress in the design decisions, improvements and process optimizations are stored.
The actions described in the optimization of the FMEA are designated as follows in the analysis, depending on their implementation status:
- open – no actions have been defined
- pending decision – actions have been defined, but no decision has yet been taken on them
- pending implementation – actions have been agreed but not yet implemented
- completed – measures have been implemented, their effectiveness verified, documented and then assessed
- rejected – actions were initially agreed but it was then decided not to implement them