QUESTION: What does the "Process Function Requirements" and "Class" field refer to in PFMEA?
ANSWER:
Process Function Requirements describes the specific functions and performance requirements of a process step. It outlines what the process is intended to do, including measurable outputs, quality standards, and operational criteria. For a welding process, the process function requirements might include ensuring a secure bond between two metal components, with specified tensile strength and weld size. The "Class" field is used to categorize the severity or criticality of a failure mode based on its impact on safety, regulations, or customer satisfaction. Typically, classifications such as Critical (C), Significant (S), or High Priority (H) are used to highlight issues that. must be closely monitored and controlled. For example, a failure that compromises product safety might be classified as Critical (C), requiring immediate corrective action.