Question: how to do a pfmea?
Answer: Step 1 | Review the process. ...  Step 2 | Brainstorm potential failure modes. ...  Step 3 | List potential effects of failure. ...  Step 4 | Assign Severity rankings. ...  Step 5 | Assign Occurrence rankings. ...  Step 6 | Assign Detection rankings. ...  Step 7 | Calculate the RPN. ...  Step 8 | Develop the action plan.