The Process FMEA is a subsection of the FMEA. This FMEA focuses on investigating a specific process. The trigger for a Process FMEA could be new designs, technology or processes, a change to an existing process or a process being applied in a new area, for example. Specifically, a process FMEA focuses on the manufacturing, assembly and testing areas. The process FMEA is executed in the production planning phase and aims to ensure that the process runs smoothly.
To ensure this, all factors that would prevent or obstruct a glitch-free process are determined. The entire chain of action, along with all influencing elements, is taken into consideration in the Process FMEA. The manufacturing procedure, along with the suitability and safety factors, is considered, as are quality capability and process stability, along with determination of process control features.
In the Process FMEA, the entire process is first split into individual parts and process steps. Next, the process content and the specific product characteristics are described in detail for each individual process step. Now, potential failures from the processes can be pinpointed and the causes of these failures can be determined. The risk can be established by looking at the failure effect and a risk ranking list can be produced.
Optimization actions and the desired end status can be established from these findings. Finally, a process flow chart and a control plan can be created for verification purposes.